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1. 3 Photosensor The photosensor mounted on this power sensor board supervises the paper running state during printing Figure 2 3 shows the sensor layout diagram Peper runn irg d rection a LU Outlet sensor za Tafer roller Paper sensor LU To ner Sensor F Registration roller LU Inlet sensor 1 LU LU Paper end sensor Inet Sensor Z Ho pping no ler Figure 2 3 Inlet sensor 1 Detects the leading part of ON Paper exists the paper and gives the OFF No paper exists supervision timing for switching from hopping operation to feeding operation Supervises the paper running state and the paper size according to the paper reach time and running time Inlet sensor 2 Detects the form width ON A4 or larger OFF Smaller than A4 Paper sensor Detects the leading part of ON Paper exists the paper Supervises the OFF No paper exists paper running state Outlet sensor Supervises the paper feed ON Paper exists and size according to the OFF No paper exists time of arrival to the sensor and the time of passage of paper Paper end sensor Detect the end of the paper ON Paper exists OFF No paper exists Toner low sensor Detects the lack of toner ON long Toner low exists OFF short No Toner low exists Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http b
2. Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 100 OKIDATA Service Guide OL1200 B Chapter 6 Troubleshooting Procedures 6 5 2 LCD message troubleshooting If problems are not correctable from the LCD message trouble list follow the troubleshooting flowcharts given here to deal with them The printer does not work normally after being turned on Jam alarm Paper input jam 1st Tray Paper input jam Front feeder Paper feed jam Paper exit jam 5 SSIO Synchronous Serial I O error Error No 7 excepting I F time out between the printer and an optional tray I F time out between the printer and the operator panel I F time out no response between the printer and an optional tray High Capacity Second Paper Feeder Power envelope feeder etc Messages cannot be received through the parallel interface Messages cannot be received through the serial interface Data cannot be received through the OKI HSP interface Note When replacing the Control board install the EEPROM from the old Control board onto the new control board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 101 wt Service Guide OL1200
3. After the end of processing Writing imo the EEPROM is performed when the Enter key is pressed Writing into the EEPROM is performed 0 25 mm intervals Writing into the EEPROM is performed when the Enter key is pressed 0 25 mm intervals Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 76 ONDATA oe 4 1 2 System maintenance mode The system maintenance mode is set when the power is turned ON while pressing the Recover key This mode adopts the menu for function selection The system maintenance mode is provided with the following functions 1 Page count display The total number of pages counted at the engine is displayed on the LCD 2 Page count printing enable disable This function selects whether to include enable or exclude disable the total number of printed pages counted at the engine at the time of menu printing 3 Rolling ASCII continuous printing The rolling ASCII pattern is printed continuously for various engine tests Press the ON LINE key to cancel this mode 4 Loop test The loop test is for testing the serial I F functions without connecting the printer to a host The data is sent and received by loop back in the loop test The loop test is performed even when any other interface is selected in Menu level 2 Installation
4. Page 22 Ww Service Guide OL1200 OKIDATA Chapter 2 Operation Description 9 Cleaning of rollers The charge roller transfer roller and cleaning roller are cleaned in the following cases In warming up at power on time In warming up after the cover is opened and closed When the number of accumulated sheets is 10 or more and the printout operation ends Changes in bias voltage applied to each roller move adhesive toner from the roller to the image drum and return it to the developer Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 23 OKID AT iN Service Guide OL1200 By Chapter 2 Operation Description 2 5 Paper Jam Detection The paper jam detection function supervises the paper state at power on time and during printing In the event that a jam occurs this function interrupts the printing process If any of the following errors is presented recovery printing will be performed by removing the jammed paper by opening the upper cover removing the jammed paper and closing the upper cover Paper input jam At power on time the paper is placed at the inlet sensor After hopping operation is attempted three times the leading part of the paper does not reach the inlet sensor Paper feed jam At power on time the paper is placed at the paper sensor The leading
5. YES END YES END Yes Clean the inlet sensor paper width sensor and outlet sensor See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board YES END Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 107 wt Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 4 Fuser unit error ERROR 71 ERROR 72 ERROR 73 Turn the power OFF ON Does a fuser unit error occur immediately Yes Is the thermistor open or shorted Measure the resistance between thermistor contacts About 220 kW at room temperature 25 C See chapter 7 3 for the measuring points Yes Replace the fuser unit A No Does the thermistor contact touch the contact assembly properly when the fuser unit is mounted in the printer See Fig 6 5 No Adjust the thermistor contact so as to touch the contact assembly properly Yes Does appear the heat on signal at pin 31 HEAT ON signal 0 V in normal state of the Control board No Replace the Control board Yes Replace the Power sensor board No Does a fuser unit error occur after more than 90 seconds from the power on No Goto Yes Turn the power OFF ON Is the heater of the fuser unit turned on When the heater is turned on heat is radiated B Yes Does the thermistor contact touch the contact
6. see 3 3 6 1 to 5 4 6 Remove the stacker cover Assy see 3 3 7 44 7 Remove the front feeder roller Assy see 3 3 12 1 to 3 ij At this time it is not required to remove the manual feed hopper Assy 8 Remove the earth plate HP 9 Lift gear TR 1 to unlock it Remove gear TR 1 and transfer roller 2 At this time two bearings TR 3 and two transfer springs 4 are also removed NOTE Do not lose bearings or springs 10 Remove connector cover 5 in direction of arrow and then remove two connectors 6 and 7 11 Remove the DC Fan motor 12 Remove eight screws 10 and then remove main chassis unit A Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 53 OKIDATA anar y Pa Sadaba 3 3 18 Registration roller 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the front feeder roller Assy see 3 3 12 1 to 3 Ay 3 Remove four screws 1 Lift and remove the registration roller Assy 2 left side first then right side 4 Release the latch and remove registration roller gear 3 and pressure roller gear 4 5 Remove left and right side registration roller bearing Assys 5 and then remove resist roller 6 and pressure roller 7 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Busines
7. 1 Hopping roller assy 4PA4076 5333G 1 3 1 Front feeder unit 1YX4076 5300G 1 i 1 Stacker cover 4PB4076 5015P 1 1 damper 1 Anti static film 3PB4083 6089P 1 4 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 127 OKIDATA A chapter 8 Parte st Front Feeder Unit a Nl ll a U0 inl cl A Affix Eat aid ll Sd dl ll a eee A a a aa ee p p pee IN sd ll lll pss ie ll OI ll ell cc ll le goa dega 1 Jo la fe si Hopping motor eee pope 56511701 Square shaped 220A1866P0221 10 56730621 connector 22P 14 Square shaped 220A1866P0140 10 56730640 connector 14P 17 Spring Separator 4LB 190500 5 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 128 N T 4 J 2 l Op Oa 5 Os o 2 os SO om v OKIDATA Base Unit Q ty 100 0 a Name Rating J 2 4 N O1 ee NO 10 J Ss 4 s O 17 Guide rail L Assy 2PP4076 5753G 1 Pull block 4PP4122 1217P 1 Link support 4PP4076 5358P 1 Cassette lock 4PP4076 5417P spring 1 Pressure coil 4PP4043 4526P spring 1 Guide rail R assy 2PP4076 5754G 1 AOLS PCB 4YA4046 1621G 11 Square
8. 4 Remove the AOLE PCB see 3 3 2 23 5 Remove the motor bracket assy see 3 3 5 3 6 Remove the gear 1 7 Shift the roller B 2 to the right lift it by holding on its left side and pull it out to the left side The bearing 3 also comes off at the same time so be careful not to lose it Pay special attention to make sure that you do not damage the sensor lever 4 while going through this procedure Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 166 OKIDATA Service Guide OL1200 a a Chapter D Power Envelope Feeder 3 3 7 Roller A Remove the motor bracket assy see 3 3 5 3 Remove two gears 1 and then another gear 2 Disengage the plate 3 and the frame 4 Remove four screws 5 and remove the frame 4 see 3 3 6 lt Move the belt to the right and remove it from the one way pulley 6 Move the carrier roller assembly to the right and remove it from the shaft 7 Move the roller A 8 to the right lift its left side and then pull it off to the left Be careful not to lose the shaft 7 being removed together Carrier roll Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 167 6 Service Guide OL1200 OKIDATA Chapter D Powe
9. 7 and two resist idle gears 8 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 56 Service Guide OL1200 Chapter 3 Parts Replacement OKIDATA 3 3 21 Fusing Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the side cover L Assy see 3 3 1 1 to 3 3 3 Unplug connector 1 4 Remove four screws 2 and then remove fusing Assy 3 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 57 OKIDATA anar y Pa Sadaba 3 3 22 Fuser Pressure Roller 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Remove the fusing Assy see 3 3 21 4 Remove the fuser pressure roller release lever see 3 3 19 5 eel 5 Remove two screws 2 and release three locks on the fusing guide Remove the fusing guide 1 by pushing it upward from the lower side 6 Release the engagement with earth plate L BK 3 Lift and remove backup roller 4 At this time two backup roller bearings 5 and two bias springs 6 are also removed Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Part
10. All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 134 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 2 MECHANISM DESCRIPTION 2 1 General Mechanicism The sheet at the very top of the stack in the paper cassette is fed into the printer one at a time when the High Capacity Second Paper Feeder receives the signal from the printer 1 First the hopping motor rotates in the direction of arrow A The hopping gear is turned by the idle gear and roller C on the same shaft is turned At the same time planet gear D moves in the direction of the arrow E and roller G turns the paper is fed for a predesignated distance until its leading edge reaches roller G 2 Next the hopping motor rotates in the direction of arrow B while the hopping gear also turns Because of the one way bearing being engaged at the hopping gear roller C does not turn The planet gear D moves in the direction of the arrow F drives the Roller G and feeds the paper into the printer until it reaches the registration roller of the printer Roller G Roller C f ba Hopping roller gear wA rd Planet gear D Idle gear Hopping motor Once the delivered into the printer the paper is then controlled and fed through by registration motor of the printer Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA
11. Bias spring Fusing guide Idle gear HF Fusing assy 120Volt Fusing assy 230Volt Exit roller assy Stacker cover assy Washer 4PP4076 5086G 3PP4076 5085P J 220A1866P0220 3PA4076 5759G 4PA4076 5756G pi 3PP4076 5032P J 3PB4076 5030P 2 4PP4043 4529P 4PP4043 4530P 2PB4076 5112P 2 4PP4076 5051P 4PP4043 4388P 2PP4076 5021P J 4PP4043 4535P 1YX4076 5100G 1YX4076 5100G Exit roller assy 4PP4076 5191G 2YX4128 1080G 4PP4076 5009P 3 J 2 J J J J NO NO J Ss J Ss J J 50807701 22P fixed side 56730620 51015901 O1 1608501 Ql 0408101 CO 0408201 O1 1234401 O1 1234501 Ql 0408302 O1 1608601 0928501 O1 1016001 O1 0234601 Ql 0219901 50219902 50408401 53073101 53073201 50516701 44 Fuser pressure 3PP4076 5347P 1 3 50808101 roller release lever 1 45 LED head 4YA4116 1200G 1 2 10 20 56111401 600 A4 18mm 2 Head cable assy 3YX4076 5760G 1 10 pC 1 2PP4128 1096P g 53073401 Cable guide B 3PB4128 1110P 1 51016501 1 I D unit ODA 4YA4076 5500G 1 a 2 50 Toner cartridge 4YA4076 5600G 1 ODA 2 Anti static strip 4PB4076 5014P 1 3 52 Stacker full sensor 4YB4128 1101P 1 2 assy 2 Head spring 4PP4128 1164P 2 1 Earth plate 4PP4043 4688P 1 a 1 DC fan motor 3PB4076 5290P 1 1 FG film 3PB4128 1181P 1
12. Disassembly must be carried out according to the prescribed procedures Parts may be damaged if such procedures are not followed 6 Small parts such as screws and collars can easily be lost therefore these parts should be temporarily fixed in the original location 7 When handling printed circuit boards do not use any glove which may generate static electricity 8 Do not place the printed circuit boards directly on the equipment or floor NOTE Always practice good anti static precautions Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 137 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 3 2 Parts Layout This section describes the layout of the main components T Control board AOLT PCB Front panel Hopping gear One way Ba Peed gear One way Second side frame L m Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 138 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 3 3 Parts Replacement Methods This section describes the parts replacement methods for the components listed in the disassembly order diagram below AOLT PCB 3 3 2 Hopping motor 3
13. OKIDATA Chapter 6 Troubleshooting Procedures The printer does not work normally after being turned on Ig EA message shown in the LCD display for less than 1 second No Is the AC cable connected properly No Connect the cable properly No Is the message 16 columns display only on the top row shown in the LCD display Yes Replace the Control board Yes Are the following voltages applied to the corresponding pins of the POWER connector on the Control board For the measuring points see Fig 6 1 Pin 15 8V Pin 16 8V Pins 19 20 30V Pins 21 22 26 29 OV Pins 23 25 5V No Remove the AC cable Set the POW switch to the ON position Measure the resistance between L and N pins of the AC inlet using a multimeter Is there continuity between L and N pins normal resistance 554 ky For measuring points see Fig 6 2 No Replace the fuse F1 or the Power sensor board Yes Are POWER connector and FRONT connector white 9 pin connector for CN3 on the Power sensor board CN8 on the Driver board and the Control board made properly No Connect the connectors properly Yes Are the following voltages applied to CN3 connector of the Power sensor board For measuring points see Fig 6 3 Pins 16 17 30V Pins 8 10 14 15 OV Pin 20 8V Pins 11 13 5V Pin 21V 8V No Replace the Power sensor board Yes Replace the Driver board Is the printer recovered No Replace the Main board YES END
14. OKIDATA Chapter D Power Envelope Feeder 3 PARTS REPLACEMENT This section covers the procedures for the disassembly reassembly and installation in the field This section describes the disassembly procedures For reassembly procedures reverse the disassembly steps 3 1 Precautions Concerning Parts Replacement 8 Parts replacements must be carried out by first turning the printer power switch off O and removing the Power Envelope Feeder from the printer Do not disassemble the Power Envelope Feeder if it is operating normally Establish the extent of disassembly suitable for the purpose of the procedure and do not disassemble any more than necessary Only specified service tools may be used Disassembly must be carried out according to the prescribed procedures Parts may be damaged if such procedures are not followed Small parts such as screws and collars can easily be lost therefore these parts should be temporarily fixed in the original location When handling printed circuit boards do not use any glove which may generate static electricity Do not place the printed circuit boards directly on the equipment or floor NOTE Always practice good antistatic procedures Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 158 i Service Guide OL1200 OKIDATA Chapter D Pow
15. Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 72 OKIDATA pa et rte 4 ADJUSTMENT This chapter explains the adjustment necessary when replacing a part Adjustment is made by changing a parameter value set in EEPROM on the controller PCB A parameter is set with the use of the keys on the operator panel This printer has three kinds of maintenance mode You will utilize one of the maintenance modes when replacing key parts Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 73 ran eat 4 1 Maintenance Modes And Functions User maintenance mode To enter the user maintenance mode turn on the POWER switch while pressing the MENU key Function There are six functions as follows Menu reset Hex dump Drum counter reset Operator panel menu disable X adjust Y adjust System maintenance mode Note This mode is used only by service persons and it should not be released to the end users To enter the system maintenance mode turn on the POWER switch while pressing the RECOVER key Function There are five functions as follows Page count display Loop test Page count printing enable disable EEPROM reset Rolling ASCII continuous p
16. The desired destination can be set by turning the power on while depressing two keys corresponding to the destination according to the following table Destination Keys to be depressed ODA MENU gt OEL MENU lt Non Europe 1 MENU PAPER SIZE Australia etc Non Europe 2 MENU TRAY TYPE Singapore etc Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 85 8 Service Guide OL1200 OKIDATA Chapter 5 Periodic Maintenance 5 1 Periodic Parts Replacement The parts are to be replaced periodically as specified below Part name Condition for Cleaning replacement Toner cartridge 5 000 LED head Consumables Image drum 30 000 LED head Consumables cartridge Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 86 te Service Guide OL1200 OKIDATA Chapter 5 Periodic Maintenance 5 2 Cleaning Remove any toner and dust Clean inside and around the printer with a piece of cloth when necessary Use the handy cleaner VACUUM for cleaning the printers interior Note Do not touch image drum LED lens array and LED head connector block Do not use any solvents Copyright 1997 Okidata Division of OKI America Inc All rights reserve
17. display Simplify page data formatting Interface error Card removal error Jam errors ERROR HOST I F SN READY Pe orem Fee ATTENTION B cara An error occurred in the serial I F This message Is displayed when a parity error a framing error or an overrun error is detected The card containing print data was removed Paper of improper size was fed from the tray tttttt MANUAL TRAY 1 TRAY 2 or ENVLOP A jam occurred during paper feeding from the tray tttttt MANUAL TRAY 1 TRAY 2 or ENVLOP A jam occurred during paper feeding from the tray tttttt MANUAL TRAY 1 TRAY 2 or ENVLOP Press the RECOVER key on the operator panel to release the error display Check the settings of RS232C I F in the menu Replace the interface cable or Control board Note When replacing the Control board install the EEPROM mounted in the replaced Control board Install the card again Check the paper in the tray or check to see if more than one sheet of copy were fed simultaneously Open the cover then close it to perform recovery printing and the error display is released If this error occurs frequently see chapter 6 5 2 4 Check the paper in the cassette Open the cover then close it to perform recovery printing and the error display is released If this error occurs frequently see chapter 6 5 2 4 Check the paper in the cassette Open the cover then clo
18. http bpx okidata com Page 60 OKIDATA anar y Pa Sadaba 3 3 25 Outlet sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Press the clamp part of outlet sensor lever 1 Remove the outlet sensor lever 1 by pushing it upward from the lower side Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 61 OKIDATA anar y Pa Sadaba 3 3 26 Toner sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Squeeze the clamp part of toner sensor lever 1 and remove the toner sensor lever 1 by pushing it upward from the lower side Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 62 OKIDATA anar y Pa Sadaba 3 3 27 Paper sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Squeeze the clamp part of the paper sensor lever 1 Remove the paper sensor lever 1 by pushing it upward from the lower side Lire t B Squeeze Squeeze Copyright 1997 Okidata Division of OKI Ame
19. microswitch causes the motor to stop Hop ping Roller Front Feeder Hopping Fo ller 1st Try Orewa Clutch Gear 4 2 After turning on the inlet sensor the paper advances further by a predetermined length until it hits the registration roller The skew of the paper can thus be corrected Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 15 8 Service Guide OL1200 OKIDATA Chapter 2 Operation Description 2 Feeding After the end of hopping the pulse motor drives the registration roller The registration roller advances the paper until it comes out of the registration roller When leading edge of the paper causes the paper sensor to turn on the printing is started synchronously OFC Orum ie Tranter Roller Hopping Roller Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 16 OKIDATA Service Guide OL1200 Chapter 2 Operation Description 3 Charging Charging is effected by applying a DC minus voltage to the charge roller that is in contact with the image drum surface Charge roller Image drum Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Part
20. 122 OKIDATA Chanter Wing D 7 2 PCB Layout 1 Control board AOLM 2 Power Sensor board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 123 OKIDATA Chanter Wing DU 7 3 Resistance Check Hebween pins land 6 702 Behaeen pins 3 ami 4 6 702 Between pins 1 and 2 4 30 Between pirs 3 and 4 4 301 Between pls 1 and 2 220k al 25 C Between ping 3 and 4 2 30 1204 B Sc1 240 Between pins lamd 670 Between ping and 2 4 981 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 124 OKIDATA Chanter Wing N 7 4 Short Plug Setting 1 Control board AOLM ar Lei oe la 5 V is supplied to pin 18 of Centronics parallel I F connector 5 V is not supplied to pin 18 of Centronics parallel I F connector CE signals of ROM 05D and 07C are effective CE signals of ROM 05D and 07C are ineffective Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 125 OKIDATA A chapter 8 Parte st 8 PARTS LIST Figure 8 1 Printer Unit Name Ratin
21. 14 is displayed Press ENTER key LED HEAD Parameter 14 is Mo 14 es is displayed on I Len Press MENU key OST AIST Wo 0 Press MENU key HEAD WID Change this setting i MARROW on the LED head type used Ad 600 FULL T 120062 NARAW Press MENU key OPT AIST Change this setting depending ONE DRY pat eh aes Ad 600 BOTH 120062 ONE DAV Press the ON LINE key After initializing process is completed pl ar Bsn dalled ler e and the setting operation is finished Do not turn the power off until the Printer enters into the on line state Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 83 OKIDATA pa et rte 4 2 2 Resetting the fuser counter 1 The fuser counter can be reset in the engine maintenance mode 2 Resetting method Opera tion LCO display With the ENTER and FORM ENG MNT FEED keys pressed tum the printer power on V Press the MENU key 12 times FUSER COUNT RESET Press the ENTER key to reset the fuser count After the initializing process is completed the printer enters int the operation mode Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 84 OKJDATA gi 4 2 3 Destination setting
22. Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 135 DATA Service Guide OL1200 OKI l Chapter C High Capacity Second Paper Feeder 2 2 Hopper Mechanism The hopper automatically feeds the printer with the paper being set single sheet at a time When the paper is loaded in the paper cassette it is then transported by the hopping motor carrying forward only a single sheet caught by the brake shoe at a time Printer Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 136 ai DATA Service Guide OL1200 OKI TERI Chapter C High Capacity Second Paper Feeder 3 PARTS REPLACEMENT This section covers the procedures for the disassembly reassembly and installations in the field This section describes the disassembly procedures For reassembly procedures reverse the disassembly instructions 3 1 Precautions Concerning Parts Replacement 1 Parts replacements must be carried out by first turning the printer power switch off O and removing the High Capacity Second Paper Feeder from the printer 2 Do not disassemble the Second Paper Feeder if it is operating normally 3 Establish the extent of disassembly suitable for the purpose of the procedure and do not disassemble any more than necessary 4 Only specified service tools may be used 5
23. Chapter 4 2 1 5 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 82 OKIDATA E 4 2 1 Setting of LED head drive time Note When the luminous intensity marking of the replaced LED head new part is same as that of the used LED head old part do not set the LED head drive time Luminous intensity marking label Last 3 digits indicate the LED head marking number Luminous intensity marking O70 Setting of LED head drive time Drive time of the LED head is to set parameter of drive time setting values corresponding to the lumious intensity displays marked on the LED head to EEPROM a Corresponding table of lumious energy display and drive time parameter Luminous intensity Drive time display on LED parameter head 0 27 0 28 0 29 0 30 0 31 0 32 0 33 0 35 0 36 0 37 0 38 0 40 0 41 0 43 0 44 0 46 0 47 0 49 0 50 0 52 0 53 0 57 0 58 0 60 0 61 0 64 0 65 0 69 0 70 0 73 0 74 0 79 0 80 0 84 0 85 0 90 0 91 0 96 0 97 1 03 1 04 1 10 TT e118 1 19 1 26 LLS I9 b Setting Example Setting method the parameter to 14 in case of privous parameter is 17 Operation LCD display after operation Tum on the POWER switch while FORM FEED and ENTER isy Display privious 7a _ IZS eii z Pressad or te key antil
24. Does the inlet sensor lever operate smoothly No Replace the inlet sensor lever Yes Clean the inlet sensor on the Power sensor board or replace the Power sensor board See Fig 2 3 Sensor Layout Diagram No Replace the hopping roller assembly or paper cassette assembly No Is the hopping roller rotating Yes Set the paper cassette properly No Is the hopping motor rotating Yes Replace the hopping roller gear one way or idle gear HF A No Are the cable and connector between the hopping motor and the Control board connected properly see chapter 7 1 No Connect each connector properly or replace the nylon connector cord white 9 pins Yes Is the coil resistance normal resistance about 6 7 W of the hopping motor normal No Replace the hopping motor Yes Replace the Control board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 103 AW DATA Service Guide OL1200 OKI TER Chapter 6 Troubleshooting Procedures 2 2 Paper input jam front feeder Does jam error occur when the power is turned on Yes Is the paper at the inlet sensor lever Yes Remove the paper No Does the inlet sensor lever operate smoothly No Replace the inlet sensor lever Yes Clean the inlet sensor on the Power sensor board or replace the Power sensor board See Fig 2 3 Sensor Layout Diagram No Does a
25. OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 34 OKIDATA CADRU E ton neal Parts Layout 4 4 Relay Drive board a ADLC PCB PowaerSensor board Insulator AOLS PCB Guide rail iL assy Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 35 OKIDATA CADRU E ton neal 3 3 How to Change Parts This section explains how to change parts and assemblies appearing in the disassembly diagram below Pante Uni Fear coved ae Bsa Hain D fan motor RAEN Marval lead hopper may 3 3 4 Side cower Pi a Barshai 2 2 6 Slacker cover ay 217 Carper EELJ Slacker ull senser 245 iC card cover 3338 Cable cover FESD LED head EEEL Eject rolls aati Separator asty 13335 Paper supply geide D 3 3 12 Separaloe F 133 1 Transtar rolar 3 4 6 Front feeder rote assy EERC Hepai g mater EERE Foon header papar arad gasii 1 3 16 Manchas anii 2 3 17 Flepistialian rallar 3 3 08 Crum meter EERE ie piii 1124 Fusing andy faa Backup roller EEFE EP jeck shati eral Happing miiir agr dea Galei sersar lever 1s Tanar season fever AE a Papii pardon lever AE Ea niel bandni avat uam Ireeultont EEE Papereedinar 03 10 Golde iad iL ae C91 Goide ral My aa
26. OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 51 OKIDATA anar y Pa Sadaba 3 3 16 Front feeder paper end sensor 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the manual feed hopper Assy see 3 3 4 i 3 Remove the side cover R see 3 3 5 5 4 Remove the front feeder roller Assy see 3 3 12 1 to 3 i 5 Remove the side plate R Assy see 3 3 15 1 to 9 A 6 Remove the connecior of front feeder paper end sensor 1 from the square shaped connector 7 Remove two screws 2 and then remove paper supply guide C 3 8 Remove paper supply guide B 4 9 Remove four claws and then remove front feeder paper end sensor 1 10 Remove two screws 5 and then remove square shaped connector 6 from paper supply guide C 8 f SN Note Use great care when removing the sensor Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 52 OKIDATA anar y Pa Sadaba 3 3 17 Main chassis unit 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the rear cover see 3 3 1 43 3 Remove the contact Assy see 3 3 2 4 4 Remove the side cover R see 3 3 5 4A 5 Remove the side plate R
27. OL1200 L a l Chapter 2 Operation Description 2 6 Cover Open When the stacker cover is opened the cover open microswitch on the power sensor board is turned off to cut the supply of 30V to the high voltage power supply circuit As a result all high voltage outputs are interrupted At the same time the CVOPN signal is sent to the control board to notify it of the off state of the microswitch and the control board performs the cover open processing Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 25 OKID AT iN Service Guide OL1200 aif Chapter 2 Operation Description 2 7 Toner Low Detection Composition The device consists of the stirring gear which rotates at a constant rate the stirring bar and the magnet on the stirring bar The stirring bar rotates through the link on the protrusion in the stirring gear Magnet Pro trusion stirring Bar Strring Gear Toner Low is detected by monitoring the time interval of the encounter of the magnet set on the sensor lever and the magnet on the stirring bar Operation during toner full state The stirring bar rotates due to the interlocking with the stirring gear Even when the magnet on the stirring bar reaches the maximum height since the other side is being dipped in the toner the stirring bar is pushed by the stirring gear
28. OLCW or power sensor board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 119 C Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 7 Poor fusing Is paper of the specified grade used No Use paper of the specified grade Yes Is the spring of the back up roller normal No Replace the spring Yes Is the contact of the fusing unit assy contacted with the contact assy properly See Figure 6 5 G No Adjust the contact of the fusing unit assy to contact the contact assembly properly Yes Replace the fusing unit assy Has the trouble been removed Yes End No Replace the control board or power sensor board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 120 OKID AT iN Service Guide OL1200 i Es Chapter 6 Troubleshooting Procedures White belts or streaks in the vertical direction Are the LED lens dirty Yes Clean the LED lens No Is the contact plate of the transfer roller contacted with the power sensor board properly See Figure 6 6 No Make the contact plate contact with the power sensor board properly Yes Replace the transfer roller See 3 3 36 lt Has the trouble been removed Yes End No Is th
29. Partner Exchange BPX for any updates to this material http bpx okidata com Page 170 OKIDATA Service Guide OL1200 Chapter D Power Envelope Feeder 5 CONNECTION DIAGRAM 5 1 Interconnection Diagram AOLE PCE AOLE PCB To the Printer Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 171 OKIDATA Service Guide OL1200 3 Chapter D Power Envelope Feeder 5 2 PCB Layout AOLE PCB Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com OKIDATA 6 PARTS LIST Table 6 1 Power Envelope Feeder No Description Part No Qty Separator 4PP4083 5544G1 1 53344201 Roller A 3PB4083 5514P1 1 53343801 gear 4PP4083 5520P1 1 51229601 Hopping motor 4PB4083 6075P1 1 Roller C 3PB4083 5524P1 1 53343901 One way pulley 4PB4043 4614P1 Mini pitch belt 4LP 1313 338 Roller B 4PB4043 4743P1 1 AOLE PCB 4YA4046 1647G11 1 10 Square shaped 220A1866P0141 1 connector 11 Nylon connector cord4YS4011 4448P4 12 Stirrer roller gear 4PP4083 2394P1 J Service Guide OL1200 Chapter D Power Envelope Feeder Remarks 2 3 4 56510701 6 51235701 51304901 9 56730641 3 Page 172 J Planet CO N Copyright 1997 Okidata Division
30. Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the side cover R see 3 3 5 4 3 Remove four screws 1 Lift up and remove front feeder roller Assy 2 4 Lift up and remove paper supply guide D 3 At this time two bias rollers 4 are also removed Be careful not to lose them 5 Remove bias spring 5 from the paper supply guide D 3 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 48 OKIDATA anar y Pa Sadaba 3 3 13 Separator F 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the manual feed hopper Assy see 3 3 4 43 3 Remove the side cover R see 3 3 5 4 4 Remove the front feeder Assy see 3 3 12 5 steps 1 to 3 Make a diagram of wire locations and routing 5 Remove two screws 1 and then remove the inner cover 2 At this time the cover lock lever 3 and the torsion spring 4 are also removed Note position of torsion spring 6 Remove two screws 5 and then remove square shaped connector 6 7 Using great care remove the connector of switch Assy 7 from square shaped connector 6 8 Turn idle gear 8 in the direction of arrow A until front feeder plate 9 is elevated 9 Remove front feeder gear 10 and then remove two springs A Be careful not to lose the springs 10 Rem
31. gears 4 the connecting lever 5 as well as the wave washer 6 all come off at the same time so be careful not to lose them 4 Remove two screws 7 and remove the hopping motor 8 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 142 _ DATA Service Guide OL1200 OKI B Chapter C High Capacity Second Paper Feeder 3 3 4 Feed roller 1 Remove the front panel assy see 3 3 1 step1 A 2 Remove the AOLT PCB see 3 3 2 4A 3 Remove the hopping motor assy see 3 3 3 A 4 Remove the latch on the feed roller gear 1 and remove the feed roller gear 1 5 Remove the latch on the feed roller bearing 2 and remove the feed roller bearing 2 6 Shift the feed roller 3 to the right side and lift it out holding it on the left side ai we l li hi Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 143 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 3 3 5 Hopping roller rubber 1 Remove the feed roller see 3 3 4 i 2 Remove the latch on the hopping roller gear 1 and remove the hopping roller gear 1 The bearing F 2 comes off at the same time so be careful not to lose it 3 Remove th
32. is requested requested paper in the feeder and press the Form Feed button Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 97 OKIDATA Service Guide OL1200 Chapter 6 Troubleshooting Procedures LCD Status Messages 2 4 General Categor LCD Status Message Trouble of Status y Paper Loading of paper indicated by Load the requested request the first line message is paper in the tray requested Mg REx The tray has run out of Load a paper ora PAFER our tttttt B aire paper paper cassette to the C aT Tey Tron tttttt Tray being selected tray TRAY1 TRAY2 FRONT MANUAL ENVLOP Buffer The memory was overflowed Press the RECOVER overflow due to the following causes key on the operator panel Data to be printed in one to release the error page is too much display Macro data is too much Install an expansion DLL data is too much optional RAM or reduce the amount of print data Buffer The receive buffer was Press the RECOVER overflow overflowed key on the operator panel to release the error display Change the setting of the host side so that the host can detect the busy state of the printer Resend the data from the host side to the printer Buffer The printer overrun Press the RECOVER overflow key on the operator panel to release the error
33. jam error occur after paper feeding Yes Is the paper fed on the inlet sensor lever Yes Goto No Goto No Does the front feeder paper sensor lever operate smoothly No Replace the lever of the front feeder paper sensor Yes Clean the front feeder paper sensor Is the printer recovered YES END No Replace the front feeder paper sensor assembly No Is the hopping roller rotating Yes Set the paper properly No Is the hopping motor rotating Yes Replace the front feeder gear or idle gear Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 104 OKIDATA Service Guide OL1200 fi OR i Chapter 6 Troubleshooting Procedures 2 3 Paper feed jam Does a paper feed jam occur when the power is turned on Yes Is the paper on the paper sensor lever Yes Remove the paper No Does the paper sensor lever operate smoothly No Replace the paper sensor lever Yes Clean the paper sensor See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board YES END No Has the paper reached the paper sensor lever No Is the registration motor rotating No Is there any defective gear in the motor bracket assembly Yes Replace the defective gear No Are the connections for CN3 connector on the Power sensor board between CN8 and CN7 connectors on the Control board and regis
34. mMm aTe arend river No 2 200 Philips 35mm SC Tene geet aredd reer Mag netieed ee E LEO Head ckaner Clans LED head FIN GPR 2AF Dion rector Or Discon mezt Jack in co nnec r Jack in co nnec r FIN 4PPQOre S395F1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 31 OKIDATA anar y Pa Sadaba 3 2 Parts Layout 1 4 Paper Cassatie assy Operator panel IR Main Control oe tl Board AOLM PCB Manual feed hopper assy Base unit Figure 3 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 32 OKIDATA piahi Parts Layout 2 4 LED head Fusing mit Stacker cover i ee a AS Eject roller a J E a he N m j i e TF a eee ae Hain chassit Alo ry alliage a ss oe lf ae a I 4 a a nL h h s n H i 4 i DC fan moror Hopping roller assy Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 33 OKIDATA CADRU E ton neal Parts Layout 3 4 Paper supply guida B _ Copyright 1997 Okidata Division of
35. of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com
36. on the lower line MANUAL LETTER REQUEST is displayed Characters will scroll one at a time from right to left LETTER may be replaced by A4 depending on the default paper type selected in the menu While the lower line scrolls the message the upper line will stay fixed When the above message appears on the LCD the user can verify that the printer has entered the cleaning mode 3 Insert a sheet of paper into the manual feed slot or press the FORM FEED button on the printer 4 Toner attached to the image drum is transferred onto the inserted sheet and the sheet is ejected with the toner residue printed While this process is going on the LCD displays CLEANING PRINT message 5 The printer returns to off line mode Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 89 OKIDATA Service Guide OL1200 2 j Chapter 5 Periodic Maintenance 5 3 Lubrication 5 3 1 General Information Lubrication should be performed once a year or as needed Use Lithium Grease When applying the grease do not over lubricate Do NOT allow lubrication to contact the surface of any rollers or paper guides Lubricate the items listed in the table below Eject Roller Gears 3 3 11 Page 3 18 Idle Gear Front Feeder 3 3 14 Page 3 22 Stacker Cover Damper Gear 3 3 8 Page 3 15 Transfer Roller Gear 3 3
37. remove the cover frame 4 Disengage the plate and the frame Refer to 3 3 6 lt Remove two screws 5 and remove the separator assy 6 Lift the paper stay 7 and disengage it from the separator bracket 8 then remove the separator 9 The spring 0 comes off at the same time so be careful not to lose it er Pressure roller Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 161 6 Service Guide OL1200 OKIDATA Chapter D Power Envelope Feeder 3 3 2 AOLE PCB 1 Remove the upper cover see 3 1 1 1 to 3 in Chapter 3 2 Remove two screws 1 and remove the AOLE PCB 2 3 Remove the connector 3 4 Remove the connector 4 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 162 OKIDATA Service Guide OL1200 wr Chapter D Power Envelope Feeder 3 3 3 Square shaped connector 1 Remove the upper cover and remove the cover frame 5 see 3 3 1 1 to 4 in Chapter 3 2 Remove the AOLE PCB see 3 3 2 i 3 Remove the screw 1 and remove the square shaped connector 2 4 Remove the nylon cord 3 from the square shaped connector 2 Confirmation after assembly _ nn i a ol 2 The square connector 2 should be hooked on
38. rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 114 wt Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 1 Image are light or blurred a whole Is toner low Is the TONER LOW message displayed Yes Supply toner No Is paper of the specified grade used No Use paper of the specified grade Yes Is the lens surface of the LED head dirty Yes Clean the lens No Is the LED head installed properly Check connector HEAD1 14P HEAD2 12P of the control board and PC connector on the LED head for proper connection No Install the LED head properly Yes Is the contact plate of the transfer roller contacted with the contact assembly of the power sensor board properly See Figure 6 6 No Make the contact plate of the transfer roller contact with the power sensor board and Shaft of the transfer roller properly Yes Are the contact of the developing roller and the contact of the toner supply roller of the image drum cartridge contacted with the contact assembly properly See Figure 6 5 A and B No Adjust the contacts of the developing and toner supply roller to contact the contact assembly properly Yes Replace the transfer roller See 3 3 36 Has the trouble been removed Yes End No Replace the image drum cartridge Has the trouble been removed Yes End Note After replacing the image drum cartridge set the printer in
39. should develop in this printer troubleshoot in the following procedure flow Troubles Troubleshoot trom the Perform detailed indicated by LED statue message trouble shooting with LOO message list See 6 5 1 the trouble shooting lmape trouble l i chr al Perform troubleshooting are not indicated with tha troubleshooting by LED message chert See 6 5 3 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 95 te Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 6 5 1 LCD status message trouble list Table 6 1 lists the status and troubles that may be indicated by messages on the LCD LED status EE cFF CO BLINK EJ on C Undefined Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 96 Service Guide OL1200 Chapter 6 Troubleshooting Procedures OKIDATA LCD Status Messages 1 4 General LCD Status Message Trouble or Status y Daily The printer is in the on line mode Normal status operation XXX Emulation in use Daily Status Daily Status Daily Status Daily status HP4 PS HxD AUT tttttt Tray being selected TRAY 1 TRAY 2 FRONT MANUAL ENVLOP mmmmmmmmm Paper size in the tray being selec
40. software ROM Check the optional RAM for proper connection Replace the optional RAM 70 A fault occurred in the fan motor Connect the fan motor cable properly Replace the fan motor Replace the Power Supply board 71 A fault occurred in the fuser 72 Thermistor open error 73 Thermistor short error 80 I F timeout occurred between the see chapter 6 5 2 printer main unit and the operator panel 81 I F timeout occurred between the see chapter 6 5 2 printer main unit and the optional tray 2nd tray envelope feeder etc 90 A watchdog timer timeout occurred Turn the power off then on Replace the Control board Note When replacing the Control board install the EEPROM mounted on the replaced Control board Monitor error double weight Turn the power off then on Replace the Control board Note When replacing the Control board install the EEPROM mounted on the replaced Control board Monitor error argument error Turn the power off then on Replace the Control board Note When replacing the Control board install the EEPROM mounted on the replaced Control board Optional timeout error Turn the power off then on Replace the Control board Note When replacing the Control board install the EEPROM mounted on the replaced Control board Optional status error Turn the power off then on Replace the Control board Note When replacing the Control board install the EEPROM mounted on the replaced Co
41. the plastic tabs on each side of sensor Assy 3 and lifting switch from cover Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 45 OKIDATA anar y Pa Sadaba 3 3 10 Cable cover cable guides A and B 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the stacker cover Assy see 3 3 7 43 3 Remove two screws 1 release tabs at position 1A Remove cable cover 2 cable guide A 3 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 46 OKIDATA anar y Pa Sadaba 3 3 11 Eject roller Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the rear cover se 3 3 1 5 3 Remove the side cover R see 3 3 5 5 4 Remove the side plate R see 3 3 6 1 to 5 5 Remove the stacker cover Assy see 3 3 7 2 6 Release the latch on the right side of eject roller Assy 1 Lift up and remove the eject roller Assy Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 47 OKIDATA anar y Pa Sadaba 3 3 12 Paper supply guide D 1
42. 0 mm 3 Weight 15 2 kg 33 5 Ibs 4 Development method Dry electrophotography Exposure method LED stationary head 5 Paper used lt Type gt Standard paper Xerox 4200 20 Ibs Application paper manual face up feed Label Envelope OHP paper Transparency lt Size gt Standard sizes Letter Legal Executive Envelope A4 A5 B5 A6 Applicable sizes Width 3 4 to 8 5 86 to 228 mm Length 5 5 to 14 140 to 355 6 mm lt Thickness gt Automatic feed 16 to 28 Ibs 60 to 105 g m 2 Manual feed Label OHP paper transparency Envelope 6 Printing speed First print 12 sec Continuous print 12 sheets min Warm up time 90 sec at room temperature 77 F 25 C and rated voltage 120 VAC 7 Paper feed method Automatic feed or manual feed 8 Paper delivery method Face down face up 9 Resolution 600 x 600 dots inch 10 Power input 120 VAC 5 5 15 ODA 230 240 VAC 10 14 ODA OEL 11 Power consumption Peak Approx 600W Typical Operation Approx 220W Idle Approx 100W Power save mode Approx 20W 12 Temperature and humidity During operation 50 to 90 F 10 to 32 C In storage 14 to 110 F 10 to 43 C 13 Noise During operation 50 dB A or less At standby 45 dB A or less Power save mode 43 dB A or less 14 Consumables Toner cartridge kit 5 000 5 duty Image drum cartridge 30 000 at continuous printing 20 000 3 page job 15 000 1 page job Copyright 1997 Okidata Division of OK
43. 139 eee 3 3 2 AOLT PCB 140 POETAE 3 3 3 Hopping motor 141 TPT 3 3 4 Feed roller 142 eee 3 3 5 Hopping roller rubber 143 wanes 3 3 6 Side frame L assy 144 arenes 3 3 7 Side frame R assy 145 4 Troubleshooting 146 4 3 Troubleshooting Method 147 oe 4 3 1 LCD Status Message List 148 sees 4 3 2 Troubleshooting Flow 149 5 Connection Diagram 150 0 2 PCB Layout 151 6 Parts List 152 D Power Envelope Feeder 1 1 Functions 153 1 2 External View and Component Names 154 2 General Mechanism 155 Table of Contents Page 2 2 Hopper Mechanism 156 3 Parts Replacement 157 3 2 Parts Layout 158 3 3 Parts Replacement Methods 159 ere 3 3 1 Separator 160 MENES 3 3 2 AOLE PCB 161 TATER 3 3 3 Square shaped connector 162 eer 3 3 4 Hopping Motor 163 eee 3 3 5 Planet gear 164 3 3 6 Roller B 165 eos 3 3 7 Roller A 166 rere 3 3 8 Mini pitch belt amp Feed roller 167 4 Troubleshooting 168 A 4 3 2 Troubleshooting Flow 169 5 Connection Diagram 170 0 2 PCB Layout 171 6 Parts List 172 Page 2 OKIDATA aaar TONDI 1 CONFIGURATION 1 1 System Configuration OL1200 consists of control and engine blocks as the standard configuration See Figure below 1 1 In addition the following options are also available Centronics arallel intertace Bidirection RS232C a LAN ett OKI HSP fl intertace board Option j Paper feeding Singal flow produced by third v
44. 17 Page 3 25 Gear on the shaft of the Registration Motor 3 3 18 Page 3 27 Idle Gears A B C D Motor Assy 3 3 20 Pages 3 29 and 3 30 Inside of the Fusing Pressure Roller Bearings 3 3 22 Page 3 32 and Shaft Hopping Roller Assy Bearings and Gear 3 3 24 Page 3 34 Bearings and shaft of the Transfer Roller 3 3 36 Page 3 49 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 90 f te Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 6 1 Troubleshooting Tips 1 Check the basic check points covered in the users manual 2 Gather as much information on the problem from the customer as possible 3 Perform inspections in conditions close to those in which the problem had occurred Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 91 8 Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 6 2 Points to Check before Correcting Image Problems 1 Is the printer being run in proper ambient conditions 2 Have the supplies toner and the routine replacement part image drum cartridge been replaced properly 3 Is the paper normal See paper specifications section 4 Has the image drum cartridge been loaded p
45. 3 3 Faed roller 3 3 4 Hopping roller rubber aas L Side frame L assy 3 3 6 High Capacity Second Paper Feeder L kis rollers fa Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 139 DATA Service Guide OL1200 OKI l Chapter C High Capacity Second Paper Feeder 3 3 1 Idle rollers 1 Remove two screws 1 and remove the front panel assy 2 2 Remove two idle rollers 3 irs Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 140 DATA Service Guide OL1200 OKI l Chapter C High Capacity Second Paper Feeder 3 3 2 AOLT PCB 1 Remove the screw 1 and remove the PCB cover 2 2 Remove three connectors 3 and two screws 4 then remove the AOLT PCB 5 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 141 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 3 3 3 Hopping motor 1 Remove the front panel assy see 3 3 1 step1 i 2 Remove the PCB cover see 3 2 2 step1 3 Remove two connectors 1 and two screws 2 then remove the hopping motor assy 3 The three
46. 4 Remove screw 1 and then remove base plate 2 5 Remove two screws 3 and then remove guide rail R Assy 4 6 Remove cassette lock spring 5 and then remove bias link 6 and pull block 7 At this time earth plate 8 is also removed Pay attention the direction of hook of cassette lock spring 5 7 Remove spring 9 and then remove cassette stopper 10 8 Remove screw A and then remove detector spring B 9 Remove screw C and then remove AOLS PCB D 10 Remove screws E from bias link 6 and then remove link support F 11 Remove two screws G and then remove square cord from square shaped connector H 12 Using great care remove connector cord from square shaped connector H Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 68 OKIDATA anar y Pa Sadaba 3 3 33 IC card cover 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove interface cable 1 3 Open stacker cover 2 Remove two screws 3 and then remove IC card cover 4 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 69 OKIDATA anar y Pa Sadaba 3 3 34 LED head 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Open
47. Chapter 2 Operation Description 7 Fusing After the end of the transfer the unfused toner image is fused on the paper under heat and pressure as it passes between the heater roller and the back up roller The heater roller with a Teflon coating incorporates a 400W heater Halogen lamp which heats the heat roller A thermistor which is in contact with the heater roller regulates the heater roller at a predetermined temperature about 185 188 C A safety thermostat cuts off voltage supply to the heater by opening the thermostat in the event of abnormal temperature rises The back up roller is held under a pressure of 2 5 kg from the pressure spring at each side Hester Hescter Fic ller Separation Chy TT Back up Roller i a N i Y Pressure Spring Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 21 OKIDATA Service Guide OL1200 Chapter 2 Operation Description 8 Cleaning After the end of the transfer residual toner on the image drum is attracted to the cleaning roller temporarily by static electricity to clean the image drum surface Image Drum Gkaning Roller Tarter Roller Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com
48. Chapter 8 Parts List OKIDATA Main Chassis Unit 90928306 1 1 3 without shaft 50407901 4PB4083 6197P J a O 4PA4076 5755G J 2PP4076 4PP4043 4532P Spring EP lock lever L assy a Name Rating 3 Stacker cover damper Idle gear exit Hopping roller assy Bearing L Hopping oo 5345P 51608101 roller assy Bearing R 4PP4076 5308P 51608201 roller 1 assy Hopping roller gear a 5327P 51235501 One way Idle gear A 4PP4076 5061P DGA 51233701 1 Idle gear B 4PP4076 5062P PTT 51233801 1 Idle gear C 4PP4076 5063P PPr 51233901 1 Idle gear D 4PP4076 5064P FFE 51234001 1 Idle gear E 4PP4076 5065P eee 51234101 1 14 Registration idle 4PP4076 5068P 2 12 91234201 gear 1 2 1 EP lock lever 4PP4076 5044P EPPP 50807301 1 EP lock spring 4PP4076 5045P EF 50928401 19 Pressure release n 5046P 50807401 lever Spring Pressure 4LB 192500 7 50922107 release lever 5 EP lock shaft 4PP4076 5047P Daag 51113301 1 22 EP lock lever L 4PA4076 5048G 1 3 50807501 assy 1 1 1 25 26 28 29 30 31 ee 2 33 34 35 36 37 38 39 40 IN NO _ h 42 43 Toner sensor lever Exit sensor lever Square shaped connector Paper supply guide D A4 assy Registration bearing assy Pressure roller Registration roller Registration gear Pressure roller ge sad Fuser pressure roller A4 Fuser pressure roller bearing
49. Connect these connectors properly Yes Is the coil resistance normal resistance between pins 1 and 2 between pins 3 and 4 4 3 W of the drum motor normal No Replace the drum motor Yes Replace the driver board Is the printer recovered No Replace the Control board YES END Go to on the next flow From on the preceding flow Yes Is the transfer roller rotating smoothly No Is there any defective gear of the transfer roller Yes Replace the defective gear No Replace the transfer roller Yes Is the fuser unit installed properly No Install the fuser unit properly Yes Is the image drum cartridge set properly No Setthe image drum cartridge properly Yes Does the paper sensor lever operate smoothly No Replace the paper sensor lever Yes Clean the paper sensor on the Power sensor board See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board YES END Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 105 r C Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 2 4 Paper exit jam Does a paper exit jam error occur when the power is turned on YES Is the paper on the outlet sensor lever Yes Remove the paper No Does the outlet sensor lever operate smoothly No Replace the outlet sensor lever Yes Clean the out
50. I America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 6 OKIDATA aaar TONDI 1 5 Safety Standards 1 5 1 Certification label The safety certification label is affixed to the printer in the position below Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 7 OKIDATA aaar TONDI 1 5 2 Warning label The warning label is affixed to the portion which may cause an injury to human body Follow the instructions on warning labels during maintenance EAU TGH HEFT ATTERTERECHALICE WO ASCH THe Ii ATEHE TE Tilia Dea ATEHEAGWLTA TEMALAR ATURA Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 8 OKIDATA Service Guide OL1200 Er Chapter 2 Operation Description 2 OPERATION DESCRIPTION OL1200 consists of a control board a power supply sensor board a driver board an operator panel and an electro photographic process mechanism The control board receives data through a host I F decodes and edits the data and stores the edited data ina memory After completing edition of one page of data it references the font memory and generates bit data on th
51. Is the operator panel connected to the Control board properly No Connect the operator panel properly Yes Is the connecting cord defective Yes Replace the connecting cord No Replace the operator panel assembly Is the printer recovered No Replace the Control board YES END Yes Is message shown in the LCD display No Replace the Control board YES 44s message shown in the LCD display No Take the proper action following the message shown in the LCD display For details see the chapter 6 5 1 LCD STATUS message trouble list YES END Main control board AQLM PCB Fig 6 1 Connector and Pin Location Fig 6 2 Measurement by a Multimeter Power Senesor board Fig 6 3 Connector and Pin Location Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 102 OKIDATA Service Guide OL1200 F Chapter 6 Troubleshooting Procedures JAM error 2 1 Paper input jam 1st tray Does a jam error occur when the power is turned on Yes Is the paper at the inlet sensor lever Yes Remove the paper No Does the inlet sensor lever operate smoothly No Replace the inlet sensor lever Yes Clean the inlet sensor on the Power sensor board or replace the Power sensor board No Does jam error occur after paper feeding Yes Is the paper fed on the inlet sensor lever Yes
52. KI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 169 OKIDATA Service Guide OL1200 l ia Fi Chapter D Power Envelope Feeder 4 3 2 Troubleshooting Flow JAM error Paper Input Jam Does paper jam at the inlet when the power is turned on YES Isthe paper located above the sensor plate Inlet YES Remove the paper NO Is the sensor plate Inlet operating normally NO Replace the sensor plate Inlet YES Replace the power sensor board or inlet sensor NO When the paper is fed in does the paper input jam occur YES _ Is the paper being fed to above sensor plate Inlet YES Is the sensor plate Inlet operating normally NO Replace the sensor plate Inlet YES Clean the Inlet sensor on the power sensor board or replace the power sensor board or Inlet sensor NO Replace the feed roller roller A or roller B NO Are the feed roller roller A and roller B rotating YES Set the paper properly NO _ Is the belt torn YES Replace belt NO Is the pulse motor turning YES Replace planet gear NO Is the connector cable being connected properly NO Connect the connector cable properly YES Check the coil resistance approx 32y of the stepping motor Is it normal NO Replace the stepping motor YES Replace the AOLE PCB Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business
53. Operation Toner Sensor Operation during toner low state When the stirring bar reaches the maximum height since there is no resistance provided by the toner on the other side it falls to the minimum height due to its own weight Because of this the time interval during which it is in encounter with the magnet of the sensor lever becomes long By monitoring this time interval toner low can be detected TONER FULL state TNRSNS ti gt 5 8 4 ti 5 8 SEC TONER LOW state TNRSNS a ee ee f n ti lt 5 8 4 5 8 SEC When the toner low state is detected 2 times consecutively Toner Low is established When the toner full state is detected 2 times consecutively Toner Low is cancelled When there is no change with the toner sensor for 2 cycles 5 8 sec x 2 or more then the Toner Sensor Alarm is activated The toner sensor is not monitored while the drum motor is in halt Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 26 OKIDATA Service Guide OL1200 Chapter 2 Operation Description 2 8 Stacker full Detection The sensor lever at the paper outlet to the stacker detects a stacker full state about 250 sheets and stops printing of the ensuing pages Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Busines
54. P or equivalent 2 Cable Cable length 6 ft 1 8 m max A Shielded cable composed of twisted pair wires is recommended for noise prevention The cable should be IEEE 1284 bi directional compliant Note Cable is not supplied Pin Mo Signal name Signal direction Functions 1 DATA STROBE PR Parallel data Sampling strobe 2 DATA BIT 1 3 DATA BIT 2 4 DATA BIT 3 5 DATA BIT 4 PA Parallel input data Gi DATA BIT 5 7 DATA BIT 6 8 DATA BIT 7 9 DATA BIT f 10 ACKNOWLEDGE PR Completion of data input or end of functioning 11 EUST PR During print processing or during alarm 12 PAPER END PR End of paper E 13 SELECT PR Select slate ON LINE id Auto Feed PR Request to change Mode 15 Not used 16 cw Signal ground i7 CHASSIS Chassis ground GROUND 18 5 PR 50 mA max 19 OV Signal ground Signal ground a0 31 INPUT PRIME PR Initializing signal 32 FAULT PR End of paper or during alarm 33 ov Signal ground a4 Mot used 35 High level 3 3 ki 36 Selece In PA Request to change Mode ag q 4 Signal level LOW 0 V to 0 8 V HIGH 2 4 V to 5 0 V 5 Specifications Item Description Mode Compatibility mode Nibble mode ECP mode Data bit length 8 bits Compatibility mode 4 bits Nibble mode 9 bits ECP mode Input prime Valid Invalid Receive buffer 8K 20K 50K 100K 1M Bytes Control Handshaking control is performed in each m
55. Page 1 Service Guide OL1200 Chapter 0 About This Manual OKIDATA Service Manual OL1200 LED Page Printer Adobe Acrobat printable reference copy of the OKIDATA Service Training Manual 09 17 97 Note This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered at 300 dpi which is ideal for printing but does not view on most displays well Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Table of Contents Page Service Guide OL1200 0 About This Manual Front Cover 1 1 Configuration 1 Configuration 2 1 2 Printer Configuration 3 1 3 Optional Configuration 4 1 4 Specification 5 1 5 Safety Standards 6 1 5 2 Warning Label 7 2 Operation Description 2 Operation Description 8 2 1 Main Control Board Aolm Pcb 9 2 2 Power Sensor Board 10 2 3 Relay Driver Board Aolc Board 11 2 4 Electro Photographic Process 12 2 4 2 Electro Photographic Process 13 2 4 3 Process Operation Descriptions 14 ee 2 Feeding 15 EPEA 3 Charging 16 ARNET 4 Exposure 17 a 5 Developing 18 seins 6 Transfer 19 re 7 Fusing 20 ee 8 Cleaning 21 inet 9 Cleaning Of Rollers 22 2 5 Paper Jam Detection 23 2 6 Cover Open 24 2 Toner Low Detection 25 2 8 Stacker Full Detection 26 2 9 Page Size Detection 27 3 Parts Replacement 3 Parts Replace
56. Press the End of processing ON LINE key poor is performed by the oo power supply off End of processing is performed by the a power supply off After the end Of processing Py Press the lt orbkey EnaBLE Writing into the EEPROM is performed amar when the Enter key is pressed Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 78 ONDATA oe 4 1 3 Engine maintenance mode The engine maintenance mode is activated when the power is turned ON while pressing to the Form Feed key and Enter key This mode adopts the menu for function selection The method for exit from this mode depends on the setting The engine maintenance mode is provided with the following functions 1 Head drive time setting Sets the drive time of the LED head 2 Printing start position setting Sets the printing start position 3 Drum count total display Displays on the LCD the total number of drum revolutions in the unit counted at the engine 4 Drum count display Displays on the LCD the total number of EP drum revolutions counted at the engine 5 Setting of standard tray paper feed length This function sets the paper feed length of standard tray paper 6 Setting of front feeder paper feed length This function sets the paper feed length of the fron
57. The data received from the host is dumped in hexadecimal notation to the printer Printing is activated automatically when the received data exceeds one page If the received data is less than one page printing can be activated manually be pressing the Form Feed key after selecting the OFF LINE Automatic activation of printing even when the received data is less than one page by selecting the Auto Eject function on the menu To exit from this mode is turning the power OFF 3 Drum counter reset This function resets the drum life data when the user replaces the image drum unit The operation mode starts automatically upon completion of resetting 4 Operator panel menu disable This function is for enabling and disabling the operator panel menu functions Menu 1 Menu 2 Tray Select Copies and Paper Size 5 X ADJUST This function is used to adjust the printing start position within the range of 2 mm in 0 25 mm steps in the X direction 6 Y ADJUST This function is capable to adjust the printing start position within the range of 2 mm in 0 25 mm steps in the Y direction Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 75 OKIDATA ar User maintenance mode menu system After the end of processing End of processing is performed by the power supply OFF
58. also turns at the same time as roller A The paper is fed for a predesignated distance until the leading edge reaches roller C Y Next the hopping motor rotates in the direction of arrow E The planet gear F moves to the direction of arrow H and drives idle gear J The rotation of idle gear J is transmitted to the gears linked to it and drives pulley on the same shaft as roller A turning roller C to feed the paper into the printer until it reaches the registration roller of the printer During this process a one way bearing is engaged at pulley so that the rotation of pulley is not transmitted to roller A preventing any feeding of papers by roller A Planet gear F S gear J Hopping motor Paper a va _Q _ A Roller E Pulley I Eelt Roller A Roller C Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 156 OKIDATA service Guide OL1200 age Chapter D Power Envelope Feeder 2 2 Hopper Mechanism The hopper automatically feeds the printer with the paper being set single sheet at a time Envelope Feeder Printer Registration roller Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 157 te Service Guide OL1200
59. and User pattern are deleted Daily All fonts of the printer are being printed Normal status Ready ON Executed by command operation entry Ready flashing Executed by key operation Daily The demo page is being printed Normal status Ready ON Executed by command operation entry Ready flashing Executed by key Daily The current menu setting is being Normal status printed operation Ready ON Executed by command entry Ready flashing Executed by key operation Daily Status Daily Status Daily Status Daily status The drum is running down This message Is displayed in combination with other message indicated on the first line Normal operation can be continued The fuser is running down Normal operation can be continued When the number of copies being printed is two or more the number of copies being printed is displayed The face down stacker is full of paper Replace the image drum cartridge Note After replacing the drum cartridge reset the drum counter Refer to the Users Manual Replace the fuse unit Note After replacing the fuser unit reset the fuser counter Refer to chapter 4 2 2 Normal operation Remove paper from the stacker Repair the broker stacker sensor cable Repeat the insertion and removal of the connector Clean or replace the stacker full sensor Manual loading of paper indicated by the Load the status first line message
60. ansmits and receives 1 byte data using eight data signal leads under the semi duplex control by the host When the power is turned on the compatibility mode is automatically selected The change to another mode from the compatibility mode is made through negotiation When the BI DIRECTION is set to ENABLE in the menu this change can be performed For the electrical ohysical characteristics of this interface see APPENDIX B b RS232C serial interface The following protocol is supported for the serial interface conforming to EIA RS232C READY BUSY DTR HI or DTR LO X ON X OFF RBST X ON For the electrical ohysical characteristics of the interface see APPENDIX A c OKI HSP interface Option This interface slot is an OKI unique universal interface that provides the platform to connect various boards including those supplied by third venders such as the LAN connection expansion board Any expansion boards compatible with this interface can be mounted on the Control board without modifying the program at the printer side The conceptual diagram of the OKI HSP interface is shown in Fig 2 2 Control board LAN expansion board p r Fig 2 2 For the electrical physical characteristics of the OKI HSP interface see the OKI HSP interface technical manual This manual will not be available to the general public 8 RAM module Pin layout 1 dE a Te Basic specification Type 72 pins SIIM 32 bits buss width Ac
61. assembly properly when the fuser unit is mounted in the printer See Fig 6 5 No Adjust the thermistor contact so as to touch the contact assembly properly To on the next flow To on the next flow From on the preceding flow Yes Replace the fuser unit Is the printer recovered No Replace the Power sensor board or Control board YES END No Is the heater or thermistor open Measure the resistance between the heater contacts normal resistance 220 kW 25 C between pins 1 and 2 2 3 W 120 V and 8 5 W 240 V between pins 3 and 4 See chapter 7 3 Yes Replace the fuser unit No Is the AC voltage applied to the CN2 connector on the Power sensor board See Fig 4 No Is CN2 connector connected to the Power sensor board No Connect the CN2 connector to the Power sensor board properly Yes Is Pin 31 HEAT ON signal of the POWER connector of the Control board turned on In normal state this pin is set to 0 V No Replace the Control board Yes Replace the Power sensor board YES GotoB Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 108 r C Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 5 Synchronous serial I O error ERROR 74 or I F time out between printer and optional tray ERROR 81 Is an optional tray 2nd tray or envelope feede
62. ay 0 1 9 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 36 OKIDATA anar y Pa Sadaba 3 3 1 Rear cover side cover L Assy face up stacker Assy and I F cover Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the interface cable 1 Remove drum toner Assy 2A and store in black plastic bag shipped w printer 3 Open the face up stacker Assy 8 Disconnect the engagement at the left and right protrusions 8A Remove the face up stacker Assy 8 Flex the Assy 8 in the middle to disengage 8A from the Rear cover 0 4 Open the stacker cover 2 and the manual feed hopper Assy 3 Remove three screws 4 Remove the side cover L Assy 5 5 Remove two screws 6 Remove the I F cover Assy 7 6 Remove two screws 9 and four claws A Use a small flat blade screw driver to pop claws Remove the rear cover 10 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 37 OKIDATA anar y Pa Sadaba 3 3 2 Contact Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the side cover L Assy see 3 3 14 1 to 4 3 Remove two screws 1 Remove the contact plate cov
63. ble in the following procedure i Turn off o the power switch of the printer ii Disconnect the AC inlet plug of the AC cable from the AC receptacle iii Disconnect the AC cable and interface cable from the printer b Reconnect the printer in the following procedure i Connect the AC cable and interface cable to the printer ii Connect the AC inlet plug to the AC receptacle iii Turn on I the power switch of the printer Disconnect 2 Do not try disassembly as long as the printer is operating normally 3 Do not remove unnecessary parts try to keep disassembly to a minimum 4 Use specified service tools 5 When disassembling follow the determined sequence Otherwise parts may be damaged 6 Since screws collars and other small parts are likely to be lost they should temporarily be attached to the original positions 7 When handling ICs such as microprocessors ROM and RAM and circuit boards always practice good anti static procedures 8 Do not place printed circuit boards directly on the equipment or floor Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 30 OKIDATA anar y Pa Sadaba Service Tools Table 3 1 shows the tools required for field replacement of printed circuit boards and units 3 1 Service Tools Sain Ta Bo 1 100 Fhilips ded
64. cassette lock spring 5 5 Remove the spring 9 and remove the cassette stopper 0 6 Remove the screw A and remove the link support B 7 Remove the screw C and remove the detector spring D 8 Remove the screw E and remove the AOLD PCB F Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 146 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 4 TROUBLESHOOTING 4 1 Precautions Prior to the Troubleshooting 1 Use the basic trouble shooting steps provided in the Operator Guide 2 Obtain detailed information concerning the problem from the user 3 Try to recreate the conditions similar to that in which the problem occurred 4 2 Preparations for the Troubleshooting 1 Display on the Operator panel The status of the problem is displayed on the LCD Liquid Crystal Display on the Operator panel Go through the appropriate troubleshooting procedures according to the messages displayed on the LCD Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 147 OKID AT i Service Guide OL1200 Chapter C High Capacity Second Paper Feeder 4 3 Troubleshooting Method When a problem occurs go through the troubleshootin
65. cess time 60ns 70ns 80ns 100ns Capacity 1 2 4 8 or 16MB 16 MB RAM will not be sold by Okidata Parity None Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 10 OKIDATA Service Guide OL1200 B Chapter 2 Operation Description 2 2 Power Sensor Board The power sensor board consists of an AC filter circuit a low voltage power supply circuit a high voltage power supply circuit heater drive circuit and photosensors 1 Low voltage power supply circuit This circuit generates the following voltages 5 V Logic circuit supply voltage Motor and fan drive voltage and source voltage for 8 V high voltage supply A 2320 ine voltage RS 232C line voltage and analog circuit supply voltage 2 High voltage power supply circuit This circuit generates the following voltages necessary for electro photographic processing from 30 V according to the control sequence from the control board When cover open state is detected 30 V supply is automatically interrupted to stop the supply of all the high voltage outputs CH 1 30 KV Voltage applied to charging roller 240 V 300 V Voltage applied to developing roller SB 360 V 450 V Voltage applied to toner supply roller TR 4 KV 1 3 kV Voltage applied to Variable transfer roller CB 400 V Voltage applied to cleaning roller
66. cide with those selected at the host side FLOW CONTROL PARITY BAUD RATE MIN BUSY DATA BITS NO Ifthe selection differs between the printer and the host change the setting of the above items in menu level 2 so as to coincide with the setting at the host side Yes Is the connector of the serial interface cable connected to the printer properly No Connect the connector of the serial interface cable to the printer properly Yes Is there any defect in the serial interface cable broken or bent pin broken wire Yes Replace the serial interface cable No Perform the loop back test using the loop test function in the system maintenance mode To make this test it is necessary to form the following loop back connector Connect the loop back connector to port instead of connecting the host Is LEBER I displayed Yes Replace the serial interface cable Is the printer recovered YES END No Replace the Control board No Replace the Control board or ask the user to check the hardware and software at the host side lanp eee ed Bea 4AO 4AT sgia imema rae SETS HOT LSE 11 550 E 6 DSA 0 OTA DB 5 Connection meth od Test connector oo nme cting drasi ny Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 112 G Service Guide OL1200 OKIDATA Chapter 6 Troublesh
67. d See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 87 r 8 Service Guide OL1200 OKIDATA Chapter 5 Periodic Maintenance 5 2 1 Cleaning of LED Lens Array Clean the LED lens array or replace the toner cartridge when white lines or stripes void light printing are generated vertically down the page as shown below Note The LED lens array must be cleaned with an LED head cleaner LED Lens cleaner pads are included with replacement toner cartridges White lies or Stipes twoid light printing 1 Set the LED head cleaner to the LED lens array as shown in the figure then slide the cleaner back and forth several times to clean the head Note Gently press the LED head cleaner onto the LED lens array 2 Throw the cleaner pad away Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 88 OKIDATA Service Guide OL1200 e es Chapter 5 Periodic Maintenance 5 2 2 Cleaning Page Function There is a Charge Roller cleaning function within this printer which can be executed by the user 1 While the printer is in off line mode press both the left arrow and right arrow keys on the printer operator panel for at least 2 seconds The printer enters the cleaning mode 2 The LCD displays CLEANING on the upper line and
68. e LED head installed properly Check CN4 connector HEAD1 149 HEAD2 12p on the control board and PC connector on the LED head No Install the LED head properly Yes Replace the LED head Has the trouble been removed Yes End Note After replacing the LED head set the printer in the engine maintenance mode by turning the power on while pressing the FORM FEED and ENTER keys Set the LED head drive time Refer to Section 4 2 Yes Replace the image drum cartridge Has the trouble been removed Yes End Note After replacing the image drum cartridge set the printer in the user maintenance mode by turning the power on while pressing the MENU key Reset the drum counter Refer to Users Manual No Replace the control board or power sensor board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 121 Service Guide OL1200 Chapter 7 Wiring Diagram OKIDATA 7 WIRING DIAGRAM 7 1 Interconnect Signal Diagram RFs eae tiili fo HOSUR pag OATES T iiin aih vi Tem Mia ian ee el a a eee E CL eh AGL eth tml minal eel nthe Atij peasy Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page
69. e latch on bearing L 3 and remove the bearing L 3 4 Remove the hopping roller 4 and remove the hopping roller rubber 5 from it iin Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 144 AL DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 3 3 6 Side frame L assy 1 Remove the hopping roller see 3 3 5 2 Remove three screws 1 and remove the upper plate 2 3 Remove two screws 3 and remove the side frame L assy 4 4 Remove the cassette lock spring 5 link 6 pull block 7 note the directions of the hooks of the cassette lock spring 5 5 Remove the spring 9 and cassette stopper 0 6 Remove the screw A and remove the link support B Jy 2 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 145 AL DATA Service Guide OL1200 OKI Fr Chapter C High Capacity Second Paper Feeder 3 3 7 Side frame R assy 1 Remove the hopping roller see 3 3 5 i 2 Remove three screws 1 and remove the upper plate 2 3 Remove two screws 3 and remove the side frame R assy 4 4 Remove the cassette lock spring 5 link 6 pull block 7 and earth plate 8 note the directions of the hooks of the
70. e same memory At the same time it transfers the bit image data to an LED head in units of one dot line The electro photographic process mechanism prints data on paper The operator panel is used for operations and status display Fig 2 1 shows an OL1200 block diagram Figure 2 1 OL1200 block diagram Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 9 OKIDATA Service Guide OL1200 Chapter 2 Operation Description 2 1 Main Control Board AOLM PCB The control board consists of a one chip CPU LSIs a program font ROM a DRAM an EEPROM a host interface circuit and a mechanism driving circuit 1 One chip CPU The one chip CPU is a custom CPU 32 bit internal bus 32 bit external bus 33 MHz clock that incorporates a RISC CPU and its peripheral devices and has the following functions Chip select controller Control of ROM DRAM and I O device Bus controller DRAM controller DMA controller Transfer of image data from DRAM to OST LSI Parallel interface controller Control of Centronics parallel interface Serial interface controller Control of RS 232C serial interface Timer Generation of various control timing Monitoring of paper running and paper size Serial I O port Control of operator panel EEPROM and options I O port Inputting outputting of sensor signal and motor
71. ender Figure 1 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 3 OKIDATA Ae Configuration 1 2 Printer Configuration The printer unit consists of the following hardware components Electro photographic processor Paper feeder Controller Operator panel Power sensor board Figure 1 2 shows the printer unit configuration Operator Panel Assy Stacker Cover Assy 2 Face up Stacker Assy ee i Fusing Assy F jii i E H Ia a Rear Cover Eject Rolle 3 E RA a EE ae nea la Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 4 OKIDATA aaar TONDI 1 3 Optional Configuration The options below are available for use with OL1200 They are sold separately from the printer unit e 8MB RAM module e 16MB RAM module Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 5 OKIDATA gag ees Para 1 4 Specification 1 Type Desk top 2 External dimensions Height 10 6 270 mm excludes protruding Width 14 4 866 mm Portion Depth 16 9 48
72. er 2 and the contact Assy 3 Pull bottom of Assy 3 out first then the top of Assy Remove fan connector cables from location 4 Caution Be careful not to deform the electrodes of the contact Assy when removing the contact Assy Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 38 OKIDATA anar y Pa Sadaba 3 3 3 DC fan motor 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the side cover L Assy see 3 3 14 1 to 4 3 Unplug the connector of the DC fan motor 1 and remove the DC fan motor 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 39 OKIDATA CADRU E ton neal 3 3 4 Manual feed hopper Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Open manual feed hopper Assy 1 Disengage the lower portion of this Assy 3 Hold manual feed hopper Assy 1 vertically and remove the left and right levers 2 with a downward motion Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 40 OKIDATA anar y Pa Sadaba 3 3 5 Side c
73. er Envelope Feeder 3 2 Parts Layout This section describes the layout of the main components Happing cover Hopping motor eer Upper cover cm Sr a ey mory Control board i ise ee Roller A gt Roller B Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 159 i Service Guide OL1200 OKIDATA Chapter D Power Envelope Feeder 3 3 Parts Replacement Methods This section describes the parts replacement methods for the components listed in the disassembly order diagram below Power Envelope Feeder Separator 3 3 1 3 AOLE PCB 3 3 2 Square shaped connector 3 3 3 Hopping motor 3 3 4 3 Planet gear 3 3 5 Roller B 3 3 6 Roller A 3 3 7 Mini pitch belt amp Feed roller 3 3 8 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 160 IR i Service Guide OL1200 OKIDATA Chapter D Power Envelope Feeder 3 3 1 Separator Turn the printer power off and remove the Power Envelope Feeder Disengage the link and hopper cover Remove two screws 1 disengage two locks of the upper cover 2 using a flat head screwdriver and remove the upper cover 2 Remove two pan head screws 3 and
74. error 106 E 4 Fuser unit error ERROR 71 ERROR 72 ERROR 107 73 cents 5 Synchronous serial I O error ERROR 74 or I F time out 108 between printer and optinal tray ERROR 81 eee 6 I F time out occurs between the printer and the operator 109 panel ERROR 80 rr 7 Communications with the host cannot be performed via 110 the parallel eee 8 Data from the host not received via the serial interface 111 eee 9 Data cannot be received through the OKI HSP interface 112 6 9 3 Image troubleshooting 113 er 1 Images are light or blurred a whole 114 EN 2 Dark background density 115 sees 4 Black belts or stripes in the vertical direction 116 pees 5 Cyclic error 117 Table of Contents Page re 6 Print voids 118 sees 7 Poor fusing 119 eeu 8 White belts or streaks in the vertical direction 120 7 Wiring Diagram 7 1 Wiring Diagram 121 7 2 PCB Layout 122 7 3 Resistance Check 123 7 4 Short Plug Setting 124 8 Parts List 8 Parts List 125 Main Chassis Unit 126 Front Feeder Unit 127 Base Unit 128 A RS 232 Serial Interface Rs 232 Serial Interface 129 B Centronics Parallel Interface Centronics Parallel Interface 130 C High Capacity Second Paper Feeder 2 1 General Mechanism 131 High Capacity Second Paper Feeder 132 1 2 External View and Component Names 133 2 Mechanism Description 134 2 2 Hopper Mechanism 135 3 Parts Replacement 136 3 2 Parts Layout 137 3 3 Parts Replacement Methods 138 fae 3 3 1 Idle rollers
75. ervice Guide OL1200 X Chapter D Power Envelope Feeder 1 1 Functions This Power Envelope Feeder is installed on the front section of the printer and it supplies paper automatically through the operation of hopping motor which is driven by signals sent from the printer The main functions are the followings Paper that can be used E e be 90 gin Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 154 OKIDATA Service Guide OL1200 l Chapter D Power Envelope Feeder 1 2 External View and Component Names Link Hopper cover Paper sta Roller A P i Upper cover Roller B Paper guide L Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 155 r G Service Guide OL1200 OKIDATA Chapter D Power Envelope Feeder 2 1 General Mechanism The sheet or envelope at the very bottom of the stack is fed into the printer one at a time when the Power Envelope Feeder receives the signal from the printer 1 The hopping motor rotates in the direction of arrow D The planet gear F moves in the direction of arrow G and drives rollers A and B Roller C is linked to pulley which is on the same shaft as roller A and it
76. f When the problem occurs frequently to through the Troubleshooting Check the paper in the High Capacity Second Paper Feeder Also check to see if there was a feeding of multiple sheets Carry out the recovery printing by opening the cover removing paper and closing the cover and then turning the error display off Load the paper or paper cassette in the High Capacity Second Paper Feeder Verify connection of AOLT PCB and square shaped connector Replace the square shaped connector if necessary Replace AOLT PCB Interface Notifies of occurrence Verify connection of ERROR CONT ROLLER of interface timeout AOLT PCB and between the printer square shaped connector and the High Capacity Replace the Second Paper square shaped connector if Timeout g Feeder necessary Replace AOLT PCB Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 149 DATA Service Guide OL1200 OKI im ly Chapter C High Capacity Second Paper Feeder 4 3 2 Troubleshooting Flow JAM error Paper Input Jam Does paper jam at the inlet when the power is turned on YES Is the paper located above the sensor plate Inlet YES Remove the paper NO Is the sensor plate Inlet operating normally NO Replace the sensor plate Inlet YES Replace the power sensor board or inlet sensor NO When the pape
77. g OKI J Part Qt No y 1 Side cover L 3PP4128 1 1 1 3 53073501 Assy 118G1 2 Side cover R 1PP4128 1 1 1 3 53073601 065P1 3 IC cover 2PP4128 1 1 1 3 53073701 114P1 4 I F cover assy 2PA4128 1 1 1 3 53073801 066G1 Rear cover 1PP4128 1 1 1 3 53073901 069P1 Operator panel 2YX4128 1 1 1 3 50108101 assy ODA 070G1 7 Flexible cable 238A1071P 1 2 5 10 56627901 OP pane 0012 oO 90108201 Face up 2PA4128 1 1 1 stacker assy 074G1 Manual feed 2PA4128 1 1 1 3 hopper assy 076G1 Connector 3PP4076 5 1 3 cover 052P1 R 4PP4076 5 2 3 bearing 035P1 2 Transfer roller 4PP4076 5 1 3 spring L 036P1 Transfer roller 4PP4076 5 1 3 spring R 039P1 in g mark 55700401 Ol 3073301 91608501 50928601 90408601 14 Transfer roller 3YB4076 5 1 1 3 040P1 TR gear 4PP4076 5 1 3 042P1 Contact assy 3PA4076 5 1 1 090G1 Paper cassette 1PA4076 5 1 1 assy 430G1 Damper spring 4PA4076 5 1 3 assy 758G1 51234901 ee 96731101 ee 90108001 s h o_o h h as o_o h o N D on OO oO O1 19 Separator 3PP4083 5 1 1 3 53345601 frame assy 663G1 20 FG plate BK 4PP4076 5 1 3 53346401 R 067P1 21 AOLM PCB 4YA4046 1 1 2 5 10 55077311 634G11 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 126 Service Guide OL1200
78. g according to the following procedure Problem displayed by amy out detailed the LOD message troubleshooting acao md ing to the Trmube hooting Flow see 43 24 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com OKIDATA Page 148 Service Guide OL1200 Chapter C High Capacity Second Paper Feeder 4 3 1 LCD Status Message List The listing of the statuses and problems displayed in the form of messages on the LCD is provided in Table 4 1 Classification LCD Status Description Recovery method Message Jam error Paper size error Tray paper out Synchronous serial I O error SSIO Error PAPERINPLUT JAM CHECK TRAY ERROGRRAPER JZE CHECK TRAY PAPEROUTTRAY2 ERROR CONTROLLER rq Notifies of occurrence of jam while the paper is being fed from the High Capacity Second Paper Feeder Notifies of incorrect size paper feeding from the High Capacity Second Paper Feeder Notifies of no paper or paper cassette state of the High Capacity Second Paper Feeder Notifies of occurrence of interface error between the printer and the High Capacity Second Paper Feeder Check the paper in the High Capacity Second Paper Feeder Carry out the recovery printing by opening the cover removing jammed paper and closing the cover and then turning the error display of
79. ial http bpx okidata com Page 118 OKID AT iN Service Guide OL1200 i Es Chapter 6 Troubleshooting Procedures 6 Print voids Is the contact plate of the transfer roller contacted with the power sensor board properly See Figure 6 5 No Adjust the contact plate contact to contact the power sensor board properly and the shaft of the transfer roller Yes Replace the transfer roller See 3 3 36 2 Has the trouble been removed Yes End No Are the contacts of the toner supply roller developing roller image drum and charging roller contacted with the contact assy properly See Figure 6 5 A B C D E No Adjust the contacts to contact the contact assy properly Yes Replace the image drum cartridge Has the trouble been removed Yes End Note After replacing the image drum cartridge set the printer in the user maintenance mode by turning the power on while pressing the MENU key and reset the drum counter Refer to Users Manual No Is the LED head installed properly Check connector HEAD1 14p HEAD2 12p on the control board and PC Connector on the LED head No Install the LED head properly Yes Replace the LED head or the head cable Has the trouble been removed Yes End Note After replacing the LED head set the printer in the engine maintenance mode by turning the power on while pressing the FORM FEED and ENTER keys Set the LED head drive time Refer to Section 4 2 No Replace the control board
80. ic electricity 6 Fusing The toner image transferred to the paper is fused under heat and pressure Figure 2 6 shows an electro photographic process timing chart alas volat EH ps x iA Fa i Faa UP tiei aa Co A arkama inlet sansor meee Paper hopping i Palh of paper feading Direction of rolallon of the Image dium eS eeeeeeeeeeeeeees_ _eee___ee rrr PRDY 8 DM ON A _ mooo 7 i 4 i i l i i i j p hpg m i i l i fi I iNSHS i i i I i I ansa iA Ad i H i a i i i i i d i Fead siani IN Sensor OFF OUT Sensor OFF Fead shop Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 14 OKIDATA Service Guide OL1200 oy Chapter 2 Operation Description 2 4 3 Process operation descriptions 1 Hopping Hopping from the first tray and the front feeder are effected by a single hopping motor in the mechanism shown below Hopping Motor First Tray Turning the Hopping motor in the a direction drives the hopping roller of the first tray Turning the Hopping motor in the b direction drives the Hopping roller of the front feeder The both and hopping gears contain one way bearing so that turning each of these gears in reverse direction will not be transmitted to the corresponding roller Hopping Moir One way Clutch Gear B Hopping Rolle
81. ication LCD Status Message Recovery method Jam error Paper size error Tray paper out Synchronous serial I O error Interface Timeout Notifies of occurrence of jam while the paper is being fed from the Power Envelope Feeder Notifies of incorrect size paper feeding from the Power Envelope Feeder Notifies of no paper state of the Power Envelope Feeder Notifies of occurrence of interface error between the printer and the Power Envelope Feeder Notifies of occurrence of interface timeout between the printer and the Power Envelope Feeder Check the paper in the Power Envelope Feeder Carry out the recovery printing by opening the cover removing jammed paper and closing the cover and then turning the error display off When the problem occurs frequently to through the Troubleshooting Check the paper in the Power Envelope Feeder Also check to see if there was a feeding of multiple sheets Carry out the recovery printing by opening the cover removing paper and closing the cover and then turning the error display off Load the paper in the Power Envelope Feeder Verify connection of AOLE PCB and square shaped connector Replace the square shaped connector if necessary Replace AOLE PCB Verify connection of AOLE PCB and square shaped connector Replace the square shaped connector If necessary Replace AOLE PCB Copyright 1997 Okidata Division of O
82. ion roller of the printer During this process a one way bearing is engaged at pulley so that the rotation of pulley is not transmitted to roller A preventing any feeding of papers by roller A Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 132 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 1 1 Functions The printer is mounted on top of this High Capacity Second Paper Feeder and it supplies paper automatically through the operation of hopping motor which is driven by signals sent from the printer The main functions are the followings Paper that can be used Paper Type Cut Sheet Size A4 A5 B5 Letter Executive Legal13 Legal14 Special Size Paper Width 148 to 216mm Paper length 210 to 356mm Weight 64 x 81 g m 2 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 133 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 1 2 External View and Component Names Motor assy i Second side frame FR assy Control board ADLT PCB Cassette assy l Second side trare L assy Front panel assy Copyright 1997 Okidata Division of OKI America Inc
83. let sensor on the Power sensor board See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board YES END No Is the face up stacker drawn out or pushed into the printer completely No Draw the face up stacker out the printer completely or push it into the printer completely Yes Is the eject roller assembly installed properly No Install the eject roller assembly properly Yes Replace the eject roller assembly Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 106 OKIDATA Service Guide OL1200 fi Chapter 6 Troubleshooting Procedures 3 Paper size error Is paper of the specified size used No Use paper of the specified size Yes Do the inlet sensor lever and paper width sensor lever operate smoothly No Replace the inlet sensor lever or paper width sensor lever Is the printer recovered No Clean the inlet sensor or paper width sensor on the Power sensor board See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board YES END YES END YES Does the outlet sensor lever operate smoothly No Replace the outlet sensor lever Is the printer recovered No Clean the outlet sensor on the Power sensor board See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board
84. lined below Figure 2 5 shows the electro photographic printing process Fuser Hoppang Motor LED Head Hopping Roller Registration Motor Drum Motor Image Orum Unit Figure 2 4 1 Charging The surface of the image drum is uniformly charged with negative charges by applying a negative voltage to the charge roller 2 Exposure Light emitted from the LED head irradiates the negatively charged surface of the image drum The surface potential of the irradiated part of the image drum surface is lowered so that an electrostatic latent image associated with the print image is formed 3 Developing and toner recovery When the negatively charged toner is brought into contact with the image drum it is attracted to the electrostatic latent image by static electricity making the image visible At the same time the residual toner on the image drum is attracted to the developing roller by static electricity 4 Transfer When paper is placed over the image drum surface and a positive charge opposite in polarity to the toner is applied to the reverse side of the paper from the transfer roller the toner is attracted by the positive charge and is transferred to the paper As a result the toner image formed on the image drum is transferred to the paper 5 Temporary cleaning Residual toner that remains on the image drum without being transferred is made uniform by the cleaning roller and is temporarily attracted to the cleaning roller by stat
85. ment 28 3 1 Precautions For Parts Replacement 29 ne Service Tools 30 3 2 Parts Layout 1 4 31 Parts Layout 2 4 32 Parts Layout 3 4 33 Parts Layout 4 4 34 3 3 How To Change Parts 35 3 3 1 Rear Cover Side Cover L Assy Face Up Stacker 36 Assy And I F Cover Assy 3 3 2 Contact Assy 37 Table of Contents Page 3 3 3 Dc Fan Motor 38 3 3 4 Manual Feed Hopper Assy 39 3 3 5 Side Cover R Operator Panel Assy 40 3 0 6 Earth Plate Bk R Aolm Pcb Ic Cover 41 3 3 Stacker Cover Assy Damper Arm And Washer 42 3 3 8 Damper 43 3 3 9 Stacker Full Sensor Assy 44 0 3 10 Cable Cover Cable Guides A And B 45 3 3 11 Eject Roller Assy 46 3 0 12 Paper Supply Guide D 47 3 3 13 Separator F 48 3 3 14 Front Feeder Roller Assy 49 3 3 15 Hopping Motor 50 3 3 16 Front Feeder Paper End Sensor 51 3 3 17 Main Chassis Unit 52 3 3 18 Registration Roller 53 3 0 19 Drum Motor 54 3 3 20 Idle Gear 55 3 3 21 Fusing Assy 56 3 3 22 Fuser Pressure Roller 5 3 3 23 Ep Lock Shaft 58 3 3 24 Hopping roller Assy 59 3 3 20 Outlet sensor lever 60 3 3 26 Toner sensor lever 61 3 3 2 Paper sensor lever 62 3 3 28 Inlet sensor lever 63 3 3 29 Insulator 64 3 3 30 Paper end lever 65 3 3 301 Guide rail L Assy 66 3 3 02 Guide rail R Assy 67 3 3 33 IC card cover 68 0 0 04 LED head 69 3 3 00 Separator Assy 70 3 3 06 Tran
86. nal ready 1 Protective ground fee Joo ooo 2 2 TD TO HOST Transmitted data from this unit to host host Request To Send RTS TO HOST Hi fixed Data Set Ready DSR FROM HOST Not used 11 11 Supervisory Send SSD TO HOST Not used Data e a o foros max 50 ma Data Terminal Ready TO HOST Ready Busy signal 4 Signal level MARK polarity 3V to 15V LOGIC 1 SPACE polarity 3V to 15V LOGIC 0 5 Specifications Lr o bps Data bit length 8 bits 7 bits Parity Odd even none space mark and ignore not selectable Stop bit length 1bit fixed Protocol DTR High DTR LOw XON XOFF Robust XON XOFF Serial data Time Example 8 bits with parity 0 10010101 7 TL siphit he bit HSB LSB Starthit Receive buffer 8K 20K 50K 100K 1M bytes Busy line DTR pin 20 fixed High Ready Low Ready selectable Minimum busy time 200 msec 1 sec Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 130 OKIDATA Service Guide OL1200 l F Chapter B Centronics Parallel Interface Appendix B CENTRONICS PARALLEL INTERFACE 1 Connector Printer side 36 pin receptacle Female Type 57 40360 12 D56 made by Daiichi Denshi or equivalent Cable side 36 pin plug Male Type 57 30360 made by Daiichi Denshi or equivalent Plug 552274 1 AMP 552073 1 AM
87. nal received from the CPU 6 LSI MBCE31701 040FP BND This LSI is used as a peripheral device of the CPU and performs smoothing compensation OST of print image data 300 dpi and 600 dpi In addition it transfers serially bit image data for each dot line to the LED head 7 Host interface This printer has the following interfaces to the host Centronics bidirectional parallel interface RS232C serial interface OKI HSP interface Option The single effective interface or the automatic interface select mode can be selected using the menu If the busy state of the printer continues for a long time period the buffer near full control releases the busy status at constant intervals even if the host side is busy so not to cause the interface time out at the host side a Centronics bidirectional parallel interface This is an interface conforming to IEEE 1284 and provides either unidirectional or bidirectional communications according to each of the following communication modes Compatibility mode Unidirectional communications from the host to the printer Nibble mode This mode transmits 4 bit wide data from the printer to the host In this mode each 1 byte data is transferred in the form of two nibbles using ERROR BUSY FAULT and SELECT signal leads This mode can provide the bidirectional operation in combination with the compatibility mode ECP mode his mode provides the asynchronous bidirectional interface and tr
88. ner Exchange BPX for any updates to this material http opx okidata com Page 58 OKIDATA anar y Pa Sadaba 3 3 23 EP Lock Shaft 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Remove screw 1 Turn EP lock level L Assy 2 in the direction of arrow A 4 Remove spring 3 5 Drop EP lock shaft 4 down and turn in the direction of arrows B and remove it Spring located here Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 59 OKIDATA anar y Pa Sadaba 3 3 24 Hopping roller Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Release the latch Remove hopping roller gear 1 and bearing P 2 Then remove idle gear HF 3 4 Remove the left side of hopping roller shaft 4 from the groove Pull out hopping roller shaft 4 and hopping roller Assy 5 toward the left 5 Release the latch and remove bearing L 6 6 Release the latch and remove hopping roller Assy 5 At this time knock pin 7 is also removed Be careful not to lose the knock pin Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material
89. ner Exchange BPX for any updates to this material http bpx okidata com Page 17 OKIDATA Service Guide OL1200 Chapter 2 Operation Description 4 Exposure Light emitted from the LED head irradiates the image drum surface with negative charges The surface potential of the irradiated part of the image drum drops thereby forming an electrostatic latent image associated with the image signal Imaga dry m Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 18 OKIDATA Service Guide OL1200 e es Chapter 2 Operation Description 5 Developing Toner is attracted to the electrostatic latent image on the image drum surface to convert it into a visible toner image Developing takes place at the contact between the image drum and the developing roller 1 As the toner supply roller rotates while rubbing on the developing roller a friction charge is generated between the developing roller and the toner allowing the toner to be attracted to the developing roller The developing roller surface is charged positive and the toner negative Doctor b kde Garge roller To ner sup phy roller Devek ping roller Image dru m 2 The toner attracted to the developing roller is scraped off by the doctor blade forming a thin coat of toner on the developing roller surface 3 To
90. ner is attracted to the exposed part low potential part of the image drum at the contact between the image drum and the developing roller making the electrostatic latent image visible Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 19 OKIDATA Service Guide OL1200 e es Chapter 2 Operation Description 6 Transfer The transfer roller is composed of conductive sponge material and is designed to make the image drum surface and the paper closely into contact Paper is placed over the image drum surface and a positive charge opposite in polarity to the toner is applied to the paper from its reverse side The application of a high positive voltage from the power supply to the transfer roller causes the positive charge induced to the transfer roller surface to be transferred to the paper at the contact between the transfer roller and the paper As a results toner charged negative that is attracted to the image drum surface is transferred to the upper side of the paper by the positive charge on the lower side of the paper Image drum _ D Tranter roller Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 20 OKIDATA Service Guide OL1200 wry
91. ntrol board F4 BG program error F5 System timer program error Defect in the cable for the front feeder paper sensor and the 2 pin connector of the Control board Poor connection of connectors F6 IP T2 program error Turn the power off then on Replace the Control board Note When replacing the Control board install the EEPROM mounted on the replaced Control board Turn the power off then on Repair defective front feeder paper sensor cable and 2 pin connector on the Control board or remove insert the connectors Replace the Control board Turn the power off then on Replace the Main board AOLM PCB Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 99 AW amp Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures LCD Status Messages 4 4 Processor errors E e as Pe orem MM cara Address Error Exception See Below Lead instruction instruction fetch 5 Address Error Exception Store See Below instruction Bus Error Exception Instruction Fetch Bus Error Exception See Below Load instruction store instruction Bus Error Exception See Below Load instruction store instruction Turn the power off then on Replace the Control board Note When replacing the Control board install the EEPROM mounted on the replaced Control board
92. ode Data received from the host is stored in the receive buffer Busy control is performed Signal lead control is performed 6 Timing charts Data receiving timing DATA 1 8 J Ly Le 15 miny MR ins mi DATA STROBE 18 0 PZ 500us O 05us BUSY _ hes a o MU je 25H5 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 131 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 2 1 General Mechanism The sheet or envelope at the very bottom of the stack is fed into the printer one at a time when the Power Envelope Feeder receives the signal from the printer 1 The hopping motor rotates in the direction of arrow D The planet gear F moves in the direction of arrow G and drives rollers A and B Roller C is linked to pulley which is on the same shaft as roller A and it also turns at the same time as roller A The paper is fed for a predesignated distance until the leading edge reaches roller C 2 Next the hopping motor rotates in the direction of arrow E The planet gear F moves to the direction of arrow H and drives idle gear J The rotation of idle gear J is transmitted to the gears linked to it and drives pulley on the same shaft as roller A turning roller C to feed the paper into the printer until it reaches the registrat
93. of the loop connector is necessary for the loop test The loop count is displayed in realtime on the LCD When an error occurs in the course of the test the corresponding error message Is displayed Press the ON LINE key to cancel this mode 3 To RD t Lop coneco 5 EEPROM reset All EEPROM areas including Menu level 2 to the factory default values The following items are excluded Head drive time setting Fine adjustment of printing start position Standard tray paper feed amount setting Transition to the operation mode occurs upon completion of resetting Press the Menu key to update each category The operation returns to the first category after updating the last category 6 Menu display of Hiper Window Set the display of HIPER WINDOWS in the PRINTER LANGUAGE section of Menu lt orb key Writing into the EEPROM is performed n when the Enter key is pressed is performed by the Power supply off Press the Enter key TLOOPTEST LOOP ERR i ered By ihe 3 g o Press the dort kay E Writing into the EEPROM is performed _ when the Enter key is pressed Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 77 OKIDATA aa System maintenance mode menu system Writing into the EEPROM is performed when the Enter key is pressed
94. on of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com OKIDATA Page 98 Service Guide OL1200 Chapter 6 Troubleshooting Procedures LCD Status Messages 3 5 ERROR CONTROLLER n dia oo HA HFEED Ai C AT TEMTION E cana A fault occurred in the printer Turn the power off then on to release the error display If the error display cannot be released by this procedure call a service person Code nn 10 An error was detected by program ROM check 20 An error was detected by font ROM check 30 An error was detected by resident RAM check 40 An error was detected by EEPROM check 50 An error was detected by optional software ROM 60 An error was detected by optional RAM check Replace the program ROM Location 05D 07C Replace the Main board AOLM PCB Note When replacing the Main board install the EEPROM mounted on the replaced Main board Replace the program ROM Location 06D 07D Replace the Main board AOLM PCB Note When replacing the Main board install the EEPROM mounted on the replaced Main board Replace the Main board AOLM PCB Note When replacing the Main board install the EEPROM mounted on the replaced Main board Replace the EEPROM Location 04G Replace the Main board AOLM PCB Check the optical software ROM for proper connection Replace the optional
95. ont feeder 7 shaft toward the left and then remove front feeder roller Assy 8 8 Remove knock pin 9 and then remove front feeder cam D on the left L side release lever L A and spring B At this time the bearing C on the left L side is also removed Do not mix these parts with those from the right side of Assy Note 1 Hopping roller orientation when removed from shaft 2 Be sure sensor arm swings freely after re assembly 3 Be sure that during re assembly both feeder cams 2 and D are facing the same direction Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 50 OKIDATA CADRU E ton neal 3 3 15 Hopping motor 1 Turn the AC power switch off Unplug the AC power cable from the outlet 2 Remove the manual feed hopper Assy see 3 3 4 3 Remove the side cover R see 3 3 5 4A 4 Remove the front feeder Assy see 3 3 12 1 to 3 F 5 Remove the inner cover and square shaped connector see 3 3 13 5 and 6 6 Remove hopping motor 1 from the square shaped connector 7 Remove the paper supply guide A see 3 3 13 7 to 10 3 8 Remove the lever R see 3 3 10 6 i 9 Remove two screws 2 and then remove side plate R Assy 3 10 Remove two screws 4 and then remove hopping motor 1 g Se N Copyright 1997 Okidata Division of
96. ontrol board or power sensor board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com OKIDATA Service Guide OL1200 Chapter 6 Troubleshooting Procedures Page 117 5 Cyclic error Frequency Image drum cartridge 3 7 Developing roller Toner supply roller Charging roller Cleaning roller Transfer roller Heat roller Back up roller Notes 1 1 94 2 mm 2 50 63 5 mm 2 13 54 0 mm 1 73 43 9 mm 1 48 37 6 mm 2 30 58 4 mm 3 49 88 5 mm 3 52 89 5 mm Remedy Replace or clean the image drum Replace the image drum cartridge Replace the image drum cartridge Replace the image drum cartridge Replace the image drum cartridge Replace the transfer roller Replace the fusing unit assy Replace the back up roller After replacing the image drum cartridge set the printer in the user maintenance mode by turning the power on while pressing the MENU key and reset the drum counter Users Manual Refer to After replacing the fusing unit assy set the printer in the engine maintenance mode by turning the power on while pressing the FORM FEED and ENTER keys and reset the fuser counter Refer to See 4 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this mater
97. ooting Procedures 9 Data cannot be received through the OKI HSP interface Is the interface board option connected to the OKI HSP interface connector on the Control board properly No Connect the interface board option to the OKI HSP interface connector properly Yes Is there any broken or bent pin in the interface board option Yes Ask the user to replace the interface board option No Replace the Control board OK No A trouble may exist in the interface board option interface cable or host side Ask the user to check these items Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 113 OKIDATA Service Guide OL1200 Chapter 6 Troubleshooting Procedures 6 5 3 Image troubleshooting Procedures for troubleshooting if abnormal images have been printed out are explained below Figure 6 3 below shows typical abnormal images mws o Poor fusing images are blurred or peeled off 7 when touched by hands White streaks in the vertical direction Figure 6 4 at Light o blurred FA Dak bestground fC Blak paper image aaa whale density af Pee l f PD CT Black stipes In the E Cyelleal defect CE White belts ar verlical direct sireaks in the Ine direcion wetlcal diracdan Fig 6 4 Abnormal images Copyright 1997 Okidata Division of OKI America Inc All
98. or any updates to this material http opx okidata com Page 79 OKIDATA patria Engine maintenance mode menu system ENTER key FORM FEED Power ON LCD display Press the Menu key Press the LED HEAD 4 ort key Writing into the EEPROM is performed No 17 n when the Enter key is pressed Press the Menu key PRINTPOS omm Hoare Writing into the EEPROM is performed T_nnnnnn 0 5 mm intervals Press the Menu key DRUM CNT nnnnnn Press the Menu key Press the eon Writing into the EEPROM is performed when the Enter key is pressed Note Do not change the default value Press the 4 orb key oo ae itinn inte tt WA ic nortarm Mote Do not change the detault value dortkey e 4 Writing into the EEPROM is performed Same as 1 when the Enter kay is pressed Press the Note Do not change the default value i T koy Press th aor key No 1 Writing into the EEPROM is performed _ 2 when the Enter key is pressed No 3 Mote Do not change the default value Jdorbkey ea Writing into the EEPROM is performed ae Sme Se pe when the Enter key is pressed Press As Nate Do not change the default value Enu Press the Writing into the EEPROM is performed when the Enter key is pressed Note Do not change the default value Menu key Press the Upon completion T Enter key of processing FUSER CNT ON LINE Press the _ Menu key Pre
99. ove four screws B and then remove paper supply guide C At this time front feeder earth plates D G and H are also removed 11 Remove front feeder plate 9 by releasing the engagement at two parts 9A Switch Assy 7 may now be removed 12 Pull up separator E toward you and then release two mounting posts at 15A to remove the separator At this time two springs F are also removed Be careful not to lose the springs 13 Release two mounts on paper supply guide C and pull out switch Assy 7 upward During Re assembly use great care do not pinch crimp or cut wires to switch Assy 7 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 49 OKIDATA anar y Pa Sadaba 3 3 14 Front feeder roller Assy 1 Turn the AC power supply switch off Unplug the AC power cord from the outlet 2 Remove the manual feed hopper Assy see 3 3 4 i 3 Remove the side cover R see 3 3 5 5 4 Remove the front feeder roller Assy see 3 3 12 1 to 3 4 5 Remove the paper supply guide A see 3 3 13 1 to 10 3 6 Remove idle gear 1 and then remove the right side front feeder cam 2 release lever R 3 and spring 4 At this time Knock pin 5 and bearing F are also removed Be careful not to lose them Do not mix these parts with those from the left side of Assy 7 Pull out the fr
100. over R operator panel Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove interface cable 1 3 Open stacker cover 2 Remove two screws 3 Remove F cover Assy 4 4 Remove two screws 5 and flexible cable 6 use care to not damage flexible cable Remove operator panel Assy 7 5 Open manual feed hopper Assy 8 Remove three screws 9 and then remove side cover R 10 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 41 OKIDATA anar y Pa Sadaba 3 3 6 Earth plate BK R AOLM PCB IC cover 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove side cover R see 3 3 5 2 3 Remove five screws 1 and eight connectors 2 Remove AOLM PCB 3 4 Remove two screws 4 Remove IC card cover 5 5 Remove four screws 6 Remove side plate R 7 by pulling up and out on top part of plate 6 Remove the claws and then remove FG plate BK R 8 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 42 OKIDATA anar y Pa Sadaba 3 3 7 Stacker cover Assy damper arm and washer 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the rear cover
101. part of the paper does not reach the paper sensor within a predetermined distance after the paper has reached the inlet sensor The trailing part of the paper does not pass over the paper sensor within a predetermined distance after the leading edge of the paper has passed over the paper sensor The leading part of paper does not reach the outlet sensor within a predetermined distance after the paper has reached the paper sensor Paper exit jam At power on time the paper is placed on the outlet sensor The paper does not pass over the outlet sensor within a predetermined time after the leading part of the paper has reached the outlet sensor The paper size check with the manual feed specified considers the reference size as free size Paper size error Paper size error The size of the paper is supervised by the inlet sensor 1 It is detected that the paper does not pass over the inlet sensor 1 within predetermined range of distance The inlet sensor 2 detects that the size of the loaded paper is A4 or larger or smaller than A4 The detected paper size differs from the paper size set by command or menu The paper size check with the manual feed specified considers the reference size as free size Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 24 OKIDATA Service Guide
102. pter 6 Troubleshooting Procedures 7 Communications with the host cannot be performed via the parallel interface Is the parallel interface or auto interface selected in menu level 1 No Select the parallel interface or auto interface in menu level 1 Yes _ Is the host set to the bidirectional communication Yes Set the parallel I F to the bidirectional communication enable state DISABLE ENABLE in menu level 2 No Set the parallel I F to the bidirectional communication disable state ENABLE DISABLE in menu level 2 Is the printer recovered Yes END No Is the connector of the parallel interface cable connected to the printer properly No Connect the connector of the parallel interface cable to the printer properly Yes Is there any defect in the cable broken or bent pin broken wire Yes Replace the parallel interface cable No Replace the Control board or ask the user to check the hardware and software at the host side Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 111 OKIDATA Service Guide OL1200 Chapter 6 Troubleshooting Procedures 8 Data from the host not received via the serial interface Is message displayed Yes Select the auto interface or RS232C for the host interface in menu level 1 No Do the following items selected for RS232C SERIAL in menu level 2 coin
103. px okidata com Page 11 Ww Service Guide OL1200 OKIDATA Chapter 2 Operation Description 2 3 Relay Driver Board AOLC board This board relays signals between the Control board and the Power Sensor board and includes the registration motor and drum motor driver IC Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 12 OKIDATA Service Guide OL1200 Chapter 2 Operation Description 2 4 Electro photographic Process 2 4 1 Electro photographic process mechanism This mechanism prints image data from the control board on the paper by electro photographic process The Figure 2 4 shows the layout of the electro photographic process mechanism Fuser Hop ping Motor LED Head Hop ping Roller Drum Motor Reg tration Moir Image Dram Unit Figure 2 4 1 Image drum unit The image drum unit consists of a sensitive drum a charger and a developer The unit forms a toner image on the sensitive drum using an electrostatic latent image formed by the LED head 2 Hopping motor This motor is a pulse motor of 48 steps rotation that is two phase excited by the signal from the control board It drives the hopping roller of the first tray and the front feed roller via two one way clutches according to the direction of rotation 3 Registration motor This motor is a pulse mo
104. r Front Feeder Registration Roller Hopping Pace ller First T ray One wry Clutch Gear 4 a Hopping 1st tray 1 Rotating the pulse motor in the direction a Clock wise direction drives the hopping roller of the first tray to advance the paper until the inlet sensor turns on At the same time the one way clutch gear B also rotates However the hopping roller of the front feeder will not rotate due to the one way bearing 2 After turning on the inlet sensor the paper advances further by a predetermined length until it hits the registration roller The skew of the paper can thus be corrected Hopping Roller Front eder Registration Roller Happing Faler 1st Tray b Hopping front feeder 1 Rotating the pulse motor in the direction b Counter Clock wise direction drives the hopping roller of the front feeder to advance the paper until the inlet sensor turns on At the same time the one way clutch gear A also rotates However the hopping roller of the 1st tray will not rotate due to the one way bearing A cam to push down the front feeder plate is attached on each of the ends of the hopping roller shaft These cams push down the front feeder plate when the hopping operation is not performed so as to facilitate the setting of paper into the tray A microswitch is provided under the front feeder plate to detect that the front feeder plate is at the lower position When the front feeder plate is at the lower position this
105. r used Yes Is the connection between the Control board and the optional tray connected properly See chapter 7 1 No Connect the cable properly Yes Replace the Control board Is the printer recovered No Isolate the trouble by following the 2nd tray or envelope feeder maintenance manual See appendix C or D YES END No Replace the Control board Is the printer recovered No Replace the Power sensor board YES END Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 109 C Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 6 I F time out occurs between the printer and the operator panel ERROR 80 Is the connecting cord of the operator panel connected to the PANEL connector of the Control board properly See chapter 7 1 No Connect the connecting cord of the operating panel to the PANEL connector of the Control board properly Yes Is the connecting cord defective Yes Replace the connecting cord No Replace the operator panel assembly Is the printer recovered No Replace the Control board YES END Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 110 OKIDATA Service Guide OL1200 wry Cha
106. r Envelope Feeder 3 3 8 Mini pitch belt amp Feed roller 1 Remove the roller A see 3 3 7 3 2 Remove the bearing 1 and remove the feed roller assy 2 3 Remove two bearings 3 and remove the plate 4 4 Remove the mini pitch belt 5 and the feed roller 6 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 168 OKID AT iN Service Guide OL1200 tre Chapter D Power Envelope Feeder 4 TROUBLESHOOTING 4 1 Precautions Prior to the Troubleshooting 1 Go through the basic checking items provided in the Operator Guide 2 Obtain detailed information concerning the problem from the user 3 Go through the checking in the conditions similar to that in which the problem occurred 4 2 Preparations for the Troubleshooting 1 Display on the operator panel The status of the problem is displayed on the LCD Liquid Crystal Display on the operator panel Go through the appropriate troubleshooting procedures according to the messages displayed on the LCD 4 3 Troubleshooting Method When a problem occurs go through the troubleshooting according to the following procedure F moble mdisplared by the LOD messag Trou beshooting Camyoutdetaied according tothe LoD toubEeshootng Status hiessage List according to the isee 4 3 1 Tmube shooting Flow Table 4 1 Classif
107. r is fed in does the paper input jam occur YES _ Is the paper being fed to above sensor plate Inlet YES Is the sensor plate Inlet operating normally NO Replace the sensor plate Inlet YES Clean the inlet sensor on the power sensor board or replace the power sensor board or inlet sensor NO Replace the hopping roller shaft assy or paper cassette NO Is the hopping roller shaft rotating YES Set the paper properly NO Is the stepping motor turning YES Replace the one way clutch gear on the hopping roller shaft assembly NO Is the connector cable being connected properly NO Connect the connector cable properly YES Check the coil resistance approx 4 3y of the stepping motor Is it normal NO Replace the stepping motor YES Replace the AOLT PCB Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 150 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 5 CONNECTION DIAGRAM 5 1 Interconnection Diagram Hopping moim L 1 0FP M1A 1 P ZOP SS OF M2A 1 40P M2B AOLT PCB qeREme Baza aaa 557 S S 3 To Printer To Cassette switch board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bp
108. rica Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 63 OKIDATA anar y Pa Sadaba 3 3 28 Inlet sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Squeeze the clamp part of two inlet sensor levers 1 Remove the inlet sensor levers 1 by pushing them downward Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 64 OKIDATA anar y Pa Sadaba 3 3 29 Insulator 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Remove two screws 1 and then remove inlet holder 2 At this time remove inlet 3 from inlet holder 2 4 Remove eight screws 4 connector 5 and two screws 6 Remove Power sensor PCB 7 together with AOLC PCB 8 5 Unplug connector 9 and remove Power sensor PCB 7 6 Remove insulator B Caution Be careful not to deform the paper end lever A Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 65 OKIDATA anar y Pa Sadaba 3 3 30 Paper end lever 1 Turn the AC po
109. rinting Engine maintenance mode Note This mode is used only by service persons and it should not be released to the end users To enter the engine maintenance mode turn on the POWER switch while pressing the FORM FEED key and ENTER key Function There are 13 functions as follows Head drive time setting Printing start position setting Drum counter total display Drum count display Setting of standard paper feed length Setting of front feeder paper feed length Setting of second tray paper feed length Selection of second tray feeder download table Setting of envelope feeder paper feed length Selection of envelope feeder download table Fuser count indication Fuser count reset Engine reset Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 74 OKIDATA lance 4 1 1 User maintenance mode To enter the user maintenance mode turn the power supply ON while pressing the Menu key This mode uses the menu for function selection The user maintenance mode provides the following functions 1 Menu reset All settings for Menu level 1 are reset to the factory default values The menus for all executable emulations including options are reset to the factory default values The operation mode starts automatically upon completion of resetting 2 Hex dump
110. roperly Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 92 8 Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 6 3 Tips for Correcting Image Problems 1 Do not touch or bring foreign matter into contact with the surface of the image drum 2 Do not expose the image drum to direct sunlight 3 Keep hands off the fuser unit as it is heated during operation 4 Do not expose the image drum to light for longer than 5 minutes at room temperature Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 93 te Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 6 4 Preparation for Troubleshooting 1 Operator panel display The failure status of this printer is displayed on the liquid crystal display LCD in the operator panel Take proper corrective action as directed by messages that are displayed on the LCD Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 94 DATA Service Guide OL1200 OKI i Chapter 6 Troubleshooting Procedures 6 5 Troubleshooting Flow If troubles
111. s Partner Exchange BPX for any updates to this material http opx okidata com Page 27 ra 8 Service Guide OL1200 OKIDATA Chapter 2 Operation Description 2 9 Page Size Detection The four tab pieces are driven according to the setting position of the paper guide through the cam interlocked with the paper guide of the paper cassette When the paper cassette is inserted into the printer the state of the tab pieces is detected by the microswitch to recognize the paper size State of Microswitches Letter Executive A4 Legal 14 Legal 13 B5 A5 A6 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 28 OKIDATA anar y Pa Sadaba 3 PARTS REPLACEMENT The section explains the procedures for replacement of parts assemblies and units in the field Only the removal procedures are explained here Reverse the procedure for the installation Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 29 OKIDATA CADRU E ton neal 3 1 Precautions for Parts Replacement Always practice good Anti Static procedures when handling equipment 1 Before starting parts replacement remove the AC cable and interface cable a Remove the AC ca
112. s Partner Exchange BPX for any updates to this material http opx okidata com Page 54 OKIDATA CADRU E ton neal 3 3 19 Drum motor 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Remove the registration roller Assy see 3 3 18 1 to 3 3 4 Remove fuser Assy 5 Release the latch of fuser pressure roller release lever 1 and pull out it toward the right At this time idle gear H 2 is also removed 6 Remove spring 3 and then remove pressure release lever 4 Be careful do not lose or damage spring 7 Remove EP lock spring 5 and then remove ED lock lever 6 8 Release two latches and remove motor Assy 7 9 Remove two screws 8 and then remove drum motor 9 and heat sink 10 Remove two screws 10 and then remove registration motor A Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 55 OKIDATA anar y Pa Sadaba 3 3 20 Idle Gear 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Remove the motor Assy see 3 3 19 1 to 8 lt 4 Remove three screws 1 and then remove motor bracket B 2 5 Remove idler gear E 3 idle gear D 4 idle gear B 5 idle gear C 6 idle gear A
113. se it to perform recovery printing and the error display is released If this error occurs frequently see chapter 6 5 2 4 Jam errors Daily Status Daily Status Controlle r error Optional card error Optional card error A jam occurred during paper feeding after finishing paper hopping from the tray Menu operation The upper cover was opened An error was detected by EEPROM ID No check A checksum error occurred when a card was inserted If a card other than the cards for OL series is inserted no error is displayed to ignore the inserted card A card was inserted or removed when the printer is in the on line mode Open the cover remover the paper then close the cover When the cover is closed recovery printing is performed and the error display is released If this error occurs frequently see chapter 6 5 2 4 Normal operation in menu mode Close the cover to release the error display If the display does not change after the cover is closed check for correct operation of cover open switch and lever Replace the Power Supply board Press the RECOVER key on the operator panel to reset the EEPROM to the factory default state and to release the error display Remove the card Replace the card Normal operation cannot be ensured Turn the power off then on to release the error display Replace the card Copyright 1997 Okidata Divisi
114. see 3 3 1 i 3 Remove the side cover R see 3 3 5 4 Remove the side plate R see 3 3 6 1 to 5 5 Disconnect the backup roller release lever 1 with the protrusion on the out side surface of the right side of the stacker cover 6 Remove screw 2 and washer 3 Remove two claws Remove stacker cover Assy 4 at this time the damper arm 5 is also removed Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 43 OKIDATA anar y Pa Sadaba 3 3 8 Damper 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the damper arm see 3 3 7 i 3 Remove two screws 1 and then remove two dampers 2 This hote is elongated When replacing damper be sure elongated hole is to rear of printer F gf i This hole is round Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 44 OKIDATA anar y Pa Sadaba 3 3 9 Stacker full sensor Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the stacker cover Assy see 3 3 7 44 3 Remove four screws 1 Remove stacker mount 2 by releasing the tabs at position 2A 4 Remove stacker full sensor Assy 3 by spreading
115. sfer roller 71 4 Adjustment 4 Adjustment 72 4 1 Maintenance Modes And Functions 73 4 1 1 User maintenance mode 74 ee User maintenance mode menu system 75 4 1 2 System maintenance mode 76 ee system maintenance mode menu system 77 4 1 3 Engine maintenance mode 78 Srei Engine maintenance mode menu system 79 4 1 4 EEPROM initialization 80 Table of Contents Page 4 2 Adjustment When Replacing A Part 81 4 2 1 Setting of LED head drive time 82 4 2 2 Resetting the fuser counter 83 4 2 3 Destination setting 84 5 Periodic Maintenance 5 1 Periodic Parts Replacement 85 5 2 Cleaning 86 0 2 1 Cleaning of LED Lens Array 87 5 2 2 Cleaning Page Function 88 5 3 Lubrication General Information 89 6 Troubleshooting Procedures 6 1 Troubleshooting Tips 90 6 2 Points to Check before Correcting Image Problems 91 6 3 Tips for Correcting Image Problems 92 6 4 Preparation for Troubleshooting 93 6 5 Troubleshooting Flow 94 6 5 1 LCD status message trouble list 95 reer LCD Status Messages 1 4 General 96 eed LCD Status Messages 2 4 General 97 or LCD Status Messages 3 5 Error Controller nn 98 ena LCD Status Messages 4 4 Error Controller On xxxxx 99 6 5 2 LCD message troubleshooting 100 ee 1 The printer does not work normally after being turned 101 on TON 2 1 Paper input jam 1st tray 102 ees 2 2 Paper input jam front feeder 103 eee 2 3 Paper feed jam 104 eee 2 4 Paper exit jam 105 oe 3 Paper size
116. shaped Square shaped connector connector fixed side fixed side Paper end lever 4PP4076 5154P 1 Power sensor PCB 4YB4049 1764P 120V 2 Power sensor PCB 4YB4049 1765P 230V 2 AOLC PCB 4YA4046 1620G 11 AC cord ODA 3YS4011 1315P 120V 1 AC cord ODA 3YS4011 1266P 220V 1 Nylon connector 4YS4011 4448P cord 3 Earth plate 4PP4076 5742P 1 J 2 2 2 2 2 J J J 2 NO o_o ss _ h s _ hk NO s NO 2 oh 0 _ hk 0 hk 0 0 s 0 51016701 51500301 50516801 50927302 50607201 50928801 51016801 55077101 56730640 50928901 51711001 50808201 56413702 55077211 56609701 56730803 53346601 1 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 129 OKID AT iN Service Guide OL1200 i Chapter A RS 232 Serial Interface Appendix A RS 232C SERIAL INTERFACE 1 Connector Printer side 25 pin receptacle Female Type DB 25S or equivalent Cable side 25 pin plug Male Type DB 25P or equivalent Note Plug shall be able to be fixed with a lock screw Fin assign me rit 2 Cable Cable length 6 ft 1 8m max Cable shall be shielded Note Cable is not supplied 3 Interface signal Symbol Signal direction Data termi
117. signal Option I O interface Control of OKI HSP interface 2 Program font ROM The program font ROM stores the equipment program and various types of fonts ERROM OTP or masked ROM is used as a program font ROM 3 Memory 2 Megabyte DRAM 512K x 4 is mounted as resident memory to be used for storing the program and providing various buffers This DRAM is expandable up to 34 Mbytes by adding expansion memory SIMMs This DRAM provides the areas shown in the following table Memory capacity setting System area Working area used for the Fixed Fixed program Working area used for the program Raster buffer Stores converted bit image data Expandable Receive buffer Stores temporarily the data Enable Expandable received from the host interface Page buffer Adds print information to the Expandable analyzed receive data and stores the resulted data DLL macro Stores soft fonts and macro data Expandable buffer Font cache Stores bit map fonts generated Enable Expandable buffer by the font rasterizer based on scalable font information 4 EEPROM The EEPROM has a 4 kbit capacity and stores the following data Menu data Various counter data page counter drum counter fuser counter etc Adjustment parameters LED head drive time print start position etc 5 LSI MSM10S0050 015GS This LSI is connected to the CPU via the bus as a peripheral device of the CPU and controls the memory based on the RAS signal and address sig
118. ss the Upon completion Enter key of processing ENGINE d E ON LINE RESET RX Press the Menu key Press the ON LINE key INITIALIZING ON LINE XKX Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 80 OKIDATA ene 4 1 4 EEPROM initialization The corresponding area of the EEPROM is initialized for each event as shown Table 4 1 LED haed drive time FAW revision area Intormation lor Fuser counber Page counter Menu level 1 Engime resetting for engine maintenance Finmware revision check error display Pe Pe Engine revision error LCD display ENGINE RESET Engine ID error LED display ENGINE RESET Setting of data for destination LCD display Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 81 OKIDATA pa et rte 4 2 Adjustment When Replacing A Part Adjustment necessary when replacing one of the following parts Part Replaced Adjustment LED Head Set the LED head drive time Refer to Chapter 4 2 1 3 Image Drum Cartridge Reset the image drum counter Refer to User s manual Fuser Unit Reset the fuser counter Refer to Chapter 4 2 2 i EEPROM Set the LED head drive time Refer to
119. stacker cover 1 3 Remove PC connectors 2 and two LED cables 3 from LED head 4 4 Push the hook on the left side of stacker cover 1 in the direction of arrow and remove LED head 4 Take care not to lose head springs 5 Pull out the head spring 5 from the post Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 70 OKIDATA anar y Pa Sadaba 3 3 35 Separator Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Pull out the paper cassette Assy 1 from the printer 3 Release two locks and remove separator Assy 2 At this time leaf spring 3 and coil spring 4 are also removed Be careful not to lose these springs Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 71 OKIDATA anar y Pa Sadaba 3 3 36 Transfer roller 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Open stacker cover 1 3 Lift the left side of the gear TR 2 and release the lock Remove gear TR 2 and transfer roller 3 At this time two bearings TR 4 and two transfer roller springs 5 are also removed 4 Remove diselectrification bar 6 and diselectrification film 7 from the chassis unit Copyright 1997
120. t feeder 7 Setting of High Capacity Second Paper Feeder paper feed length This function sets the paper feed length of the High Capacity Second Paper Feeder 8 Selection of High Capacity Second Paper Feeder download table This function selects the download table for the High Capacity Second Paper Feeder 9 Setting of Power envelope feeder paper feed length This function sets the paper feed length of the Power envelope feeder 10 Selection of Power envelope feeder download table This function selects the download table for the Power envelope feeder 11 Fuser count display Displays on the LCD the total number of printed pages counted at the engine 12 Fuser count reset When the fuser unit is replaced the maintenance person uses this fuser count reset function to reset the fuser lifetime After the fuser counter is reset the engine enters into the operation mode automatically 13 Engine reset All EEPROM areas used by the engine are reset to the factory default values The following items are excluded Menu level 1 Menu level 2 Operator panel menu disable enable Page print disable enable Transition to the operation mode occurs upon completion of resetting Note Do not change the default value of 2 5 amp 9 they are the parameters for adjusting in the factory Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX f
121. ted LETTER EXECUTIVE LEGAL 14 LEGAL 13 A4 SIZE A5 SIZE A6 SIZE B5 SIZE COM 10 MONARCH DL ENV C5 ENV C4 ENV The printer is in the off line mode The data remains unprinted in the buffer Data On The printer is in the on line mode Data Flash The printer is receiving the data or performing the output processing The printer is printing The printer enters into this mode when the idle state continues for the period of time specified in the Power Save menu option Normal operation In the off line mode the data is printed by pressing the FORM FEED button Normal operation Normal operation Daily Toner is running out Replace the status This message is displayed in toner combination with other message cartridge indicated in the first line Normal operation such as stop continuation of printing can be continued If LOW TONER OFF is selected in the menu the LED ATTENTION flashes Daily A fault occurred in the toner sensor Check the status Normal operation can be continued operation of the toner sensor lever Replace the Power Senso r board hereinafter simply called the Power board Replace the Control board Note When replacing the Control board install the EEPROM mounted on the replaced Control board Daily The data that remains unprinted in the Normal status buffer is deleted and the printer is operation initialized to the user default settings The temporary DLL Macro
122. the connector spring 4 and move smoothly i Teee in Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 163 OKID AT A Service Guide OL1200 Chapter D Power Envelope Feeder 3 3 4 Hopping Motor 1 Remove the upper cover see 3 3 1 1 to 3 in Chapter 3 2 Remove the AOLE PCB see 3 3 2 3 Remove two screws 1 then remove the hopping motor 2 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 164 OKIDATA Service Guide OL1200 Chapter D Power Envelope Feeder 3 3 5 Planet gear 1 Remove the upper cover see 3 3 1 1 to 3 in Chapter 3 2 Remove the AOLE PCB see 3 3 2 lt 3 Remove two screws 1 then remove the motor bracket assy 2 and the planet gear 3 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 165 G Service Guide OL1200 OKIDATA Chapter D Power Envelope Feeder 3 3 6 Roller B 1 Remove the upper cover see 3 3 1 1 to 3 in Chapter 3 2 Disengage the plate and frame on both sides 3 Remove the separator assy see 3 3 1 4 to 5 in Chapter 3
123. the contact of the image drum cartridge contacted with the ground contact properly See Figure 6 5 Ds No Check the ground contact of the image drum cartridge Yes Check the connectors HEAD1 14P and HEAD2 12P No Replace the LED head Yes Replace the connector Has the trouble been removed Yes End Note After replacing the LED head set the printer in the engine maintenance mode by turning the power on while pressing the FORM FEED and ENTER keys Set the LED head drive time Refer to Section 4 2 No Replace the control board or Power Sensor board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 116 OKIDATA Service Guide OL1200 Chapter 6 Troubleshooting Procedures 4 Black belts or stripes in the vertical direction Replace the image drum cartridge Has the trouble been removed Yes End Note After replacing the image drum cartridge set the printer in the user maintenance mode by turning the power on while pressing the MENU key and reset the drum counter Refer to User s Manual No Replace the LED head Has the trouble been removed Yes End Note After replacing the LED head set the printer in the engine maintenance mode by burning the power on while pressing the FORM FEED and ENTER keys Set the LED head drive time Refer to Section 4 2 No Replace the c
124. the user maintenance mode by turning the power on while pressing the MENU key and reset the drum counter Refer to User s Manual No Replace the control board or Power Sensor board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 115 wt Service Guide OL1200 OKIDATA Chapter 6 Troubleshooting Procedures 2 Dark background density Has the image drum been exposed to external light Yes Mount the image drum in the printer and wait for about 30 minutes No Is the heat roller of the fusing unit dirty Yes Clean the heat roller No Is the contact of the cleaning roller of the image drum cartridge contacted with e contact assembly properly See Figure 6 5 C No Adjust the contact of the cleaning roller to contact the contact assembly properly Yes Replace the image drum cartridge Has the trouble been removed Yes End Note After replacing the image drum cartridge set the printer in the user maintenance mode by turning the power on while pressing the MENU key and reset the drum counter Refer to User s Manual No Replace the control board Power Sensor board 3 Black paper is output Is the LED head connected properly Check connector HEAD1 14P HEAD2 12p on the control board and PC connector on the LED head No Connect the LED head properly or replace the head cable Yes Is
125. tor of 48 steps rotation that is two phase excited by the signal from the control board It drives the registration roller 4 Drum motor This drum motor is a pulse motor of 48 steps rotation that is two phase excited by the signal from the control board and is the main motor of this mechanism 5 LED head Image data for each dot line from the control board is received by the shift register and latch register The 5120 LED s are driven to radiate the image data to the image drum 6 Fuser The fuser consists of a heater a heat roller a thermistor and a thermostat An AC voltage from the power supply board is applied to the heater under the control of the HEATON signal from the control board This AC voltage heats the heater The control board supervises the heat roller temperature via the thermistor and regulates the heater roller at a predetermined temperature 185 188 C by connecting or disconnecting the AC voltage supply to the heater If the heater roller temperature rises abnormally the thermostat of the heater voltage supply circuit is activated to cut the AC voltage supply forcibly Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 13 OKIDATA Service Guide OL1200 l F Chapter 2 Operation Description 2 4 2 Electro photographic process The electro photographic processing is out
126. tration motor and for POWER connector and FRONT connector white 9 pin or 7 pin connector made properly No Connect these connectors properly If a defective cable is found replace the defective cable Yes Is the coil resistance normal resistance 6 7 W of the registration motor normal No Replace the registration motor Yes Replace the Driver board Is the printer recovered No Replace the Control board YES END Go to on the next flow Go to on the next flow From on the preceding page From on the preceding page Yes Is the image drum set properly No Set the image drum properly Yes Incase of paper feed from the front feeder check the hopping roller of the front feeder assembly In case of paper feed from the tray check the hopping roller assembly and the tray Yes Has the paper reached the outlet sensor lever Yes Does the outlet sensor lever operate smoothly No Replace the outlet sensor lever Yes Clean the outlet sensor on the Power sensor board See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board YES END No Is the drum motor rotating No Is there any defective gear in the motor bracket assembly Yes Replace the defective gear No Are the connections for CN3 connector on the Power sensor board between CN8 and CN6 connectors and drum motor and for POWER connector and FRONT connector white 9 pin or 7 pin connector on the Control board made properly No
127. wer switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Release the lock and remove paper end lever 1 N U Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 66 OKIDATA CADRU E ton neal 3 3 31 Guide rail L Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Remove the insulator see 3 3 29 5 4 Remove screw 1 and then remove base plate 2 5 Remove two screws 3 and then remove guide rail L Assy 4 6 Remove cassette lock spring 5 and then remove bias link 6 and pull block 7 Pay attention the direction of hook of cassette lock spring 5 7 Remove spring 8 and then remove cassette stopper 9 8 Remove screw 10 from bias link 6 and then remove link support A Ss gt a7 pd Uh f Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 67 OKIDATA anar y Pa Sadaba 3 3 32 Guide rail R Assy 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Remove the insulator see 3 3 29 5
128. x okidata com Page 151 DATA Service Guide OL1200 OKI Chapter C High Capacity Second Paper Feeder 5 2 PCB Layout AOLT PCB Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com 6 OKIDATA Service Guide OL1200 Chapter C High Capacity Second Paper Feeder Page 152 PARTS LIST Table 6 1 High Capacity Second Paper Feeder No Description Part No Qty Remarks 1 AOLD PCB 4YA4046 1646G11 2 Feed roller 3PB4076 5707P1 1 56408701 3 Hopping motor 4PB4076 5718P1 1 56511901 4 Hopping gear 4PB4043 4486P1 1 51235001 5 Hopping roller assy 4PA4076 5755G1 1 50407901 6 Feed roller gear 4PB4043 4488P1 1 7 Feed roller bearing 4PP4043 4489P1 1 8 Feed idle gear 4PP4076 5712P1 1 51235201 9 Planet gear 4PP4043 4491P1 3 91235301 10 AOLT PCB 4YA4046 1645G11 1 55077511 11 Connector cord 4YS4011 4448P3 1 56730803 12 Square shaped connector 220A1866P0141 1 56730641 13 Earth plate 4PP4076 5717P1 1 53346701 14 Bush 4PP4076 3949P1 1 51607301 15 Shaft earth plate 4PP4076 5719P1 1 53346801 16 Paper cassette assy 1PA4076 5430G1 1 50108001 17 Separator frame assy 3PP4083 5663G1 1 53345601 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 153 OKIDATA S

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