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DIGITAL Laser Printer LN15 Service Manual & Parts Catalog

1. 6589709 T IST omar 101390 pierog uapa peog 18207 101390 peog 228058 10133uuo07j 95698870 050 ZHIOP 404 91991 ANINO 5 14 5 3 3 Engine controller Block Diagram Figure 5 10 shows a block diagram of the engine controller of the laser printer LN15 The engine controller controls the engine mechanism The engine controller uses an 8 bit CPU This CPU has a RAM and a timer unit The timer has seven channels It also has several I O lines and communication functions The CPU also has 32K bytes of built in ROM memory There is no external memory in the engine control circuit An EEPROM of 2K bits is used to store printer status number of printed pages adjustment information replace parts information etc The LSI 3 has three functions That is a I O expander a bus controller and laser unit controller This controller can control two stepping motors The engine controller is controlled by a video interface from the main controller urge 32018 Joyjonuog 1 11814 i 7 1 SUSNO 63 s eudis mdu 105495 mdu speustg 4 mdau 108095 syeuasts 1013400 oseo i i NAZ of id l E i
2. 3 5 Printer Mecha Unit 2 2 3 10 3 5 Printer Mecha Unit 2 2 4 CO W N Composition amp Quantity Specification 02758 6261 02758 6112 CA02758 0195 02758 6825 CA02758 Y847 02758 6172 F6 SN2TP3 08 CA02758 Y164 CA02758 Y727 02758 728 CA02758 6G849 CA02758 Y849 04040 825 6 5 2 3 08 CA02758 2823 CA02758 0196 02758 251 02758 0251 CA02758 Y291 CA02758 G251 CA02758 0195 02758 256 02758 257 02758 255 CA02758 0195 CA02758 0129 CA02758 G115 CA02758 Y115 CA02758 2115 CA02758 Y116 3 11 Parts name Description GEAR BOX ASY FRAME R SUB ASY TAPPING SCREW COVER R ASY LOWER COVER R PSS BOARD TAPPING SCREW PSS CABLE PT LOCK LEVER PT LOCK SPRING PLATE R ASY LOWER PLATE R RUBBER FOOT TAPPING SCREM PTGR DUMPER TAPPING SCREW M MOTOR ASY MAIN MOTOR DUMPER MM MM BRACKET ASY TAPPING SCREW GEAR MA GEAR MB MM CABLE TAPPING SCREW FAN PR GUIDE R ASY PR GUIDE R PRGR LABEL DRFG EE OOOOOOOOO OOOOODOOOOOO Remarks 4 DIGITAL Laser Printer LN15 Parts CATALOG PART 2 OF 2 EK LN15X SV A01 This document is used for maintenance purpose only The illustration of the part does not guarantee its availability 3 6 Base Frame
3. lt CLEAR WARNING gt PRINT UNIT POWER ONLINE DATA ERROR um READY Important 4 Press the ENTER button to select this function The message changes to lt CLEAR WARNING gt PRINT UNIT The asterisk means that the print unit is expired 5 Press the ENTER button again to execute the function The asterisk disappears indicating the counter is reset 6 Press the READY button to return the printer online The ONLINE indicator lights up without the REPLACE PARTS message After the reset operation check the status report or the PPMENU s main menu to make sure that the Warning Message is cleared 3 5 OTHERS The printer performs the following controls not under commands from the computer 1 Fan control The fan stops after three minute has elapsed since the last printing The fan 2 stops after ten minutes has elapsed since the last printing 2 Initial control of motor At initialization the motor rotates when the temperature of the heater reaches 100 C and stops when the temperature reaches 170 C then the printer goes ready to print 3 Heat roller temperature control The heat roller temperature is reduced to 100 C from 170 C when printing does not occur for one minute Power supply to the heat roller is stopped after additional one minute has elapsed without printing CHAPTER 4 MAINTENANCE This chapter covers the maintenance cleaning lubrication insp
4. terit tpi te th hr e RERO pee ipai 2 1 2 3 UNPACKING Rep Omen AR 2 2 24 INSPECTION AFTER etii 2 3 CHAPTER 3 TROUBEESHOOTING a RO Ete re i Ree erdt 3 1 3 1 WHEN THE POWER INDICATOR DOES NOT 3 3 3 2 WHEN PRINTING QUALITY IS ABNORMAL cette nennen eere entente tenente 3 4 Ly e eem e ec eee edes 3 5 2 Whern deep iei RESET ERR ERR RE EE Ee 3 6 3 Black vertical eee eee eerte eie eel ides hte deg apre 3 7 White vertical REED uH 3 8 5 Lacking space at the top and bottom 3 9 6 Black point white point eite tet eet hee 3 10 7 Second printing ghost printing 4242 1 2 0000200000000 00000000 rer en rennen nennen nen 3 11 8 Dirty back edge 2 b eee IU am AI RO Pete 3 12 9 Black zi see Deut qe e e e rr ERU Redi 3 13 10 White oer e e eae eee E Al 3 14 GUL Blur 3nd ten cttm e amp t bct tete ete e edi Ask ditte te e taie ett 3 15 a PANEG GU 3 16 3 3 ERROR AND STATUS MESSAGES tt e neo ee Ete Ot e 3 17 3 341 Error Message s t ephmp elim eum RI RIL heehee chee ER 3 17 3 3 2 Status MesSdgess un HR ER NEE AE EEG REI DR EUR 3 18 34 RESETTIN
5. 04040 721 04040 6722 04040 727 CA04040 2714 CA04040 Y714 CA04040 Y715 CA04040 Y717 CA04040 Y719 CA04040 Y713 CA04040 G711 CA04040 Y723 CA02417 Y708 CA04040 6730 CA02758 Y719 CA02417 Y720 02417 724 Parts name Description PAPER TRAY PAPER TRAY PAPER TRAY PINION RACK PAPER GUIDE L GUIDE R ASY COVER UG SPRING HOLDER L HOLDER R LOWER GUIDE PLATE SPRING PLATE ASY PAPER GUIDE E HOLDER SEPARATOR P SIZE LEVER SIZE LABEL SIZE LABEL 000 000000000 8 3 O OO OOOOOOOOO O OO Remarks 3 11 Print Unit 22 Yee 3 11 Print Unit Index Compos tion amp Quantity gt QN amp Specification CA02758 E400 CA02758 F300 CA02758 F400 CA02758 G371 02758 00 Parts name Description PRINT UNIT DEV UNIT DRUM UNIT P LOCK ASY TONER BOTTLE RB gt Q 5 5 3 12 Cleaner ark eem 3 12 Cleaner Composition amp Quantity Specification 04040 6521 04040 6522 CA04040 G523 CA04040 Y150 04040 151 04040 524 Parts name Description CLEANER CL PAD ASY CL HOLDER ASY CL HOLDER CL P PLATE CL SPRING 000000
6. AC V 00000000 000000 0000000000000 E we 3 5 Printer Mecha Unit 2 1 Composition amp Quantity CA04040 F113 CA02758 6G111 02758 201 02758 0201 F6 SW2N3 08111 CA02758 G202 CA02758 0198 CA02758 Y204 CA02758 G211 CA02758 Y212 02758 213 02758 214 02758 215 02758 209 CA02758 G846 CA02758 Y846 CA02758 2216 CA02758 G848 CA02758 Y848 CA07 159 Y825 F6 ERA S F6 SN2TP3 08 CA02758 2821 CA02758 0196 CA02758 Y105 F6 SBD3 06121 02758 106 6 5 03 06121 02758 104 02758 0195 CA02758 G114 02758 114 02758 2114 02758 6127 02758 606 02758 0195 Parts name Description FRAME L ASY FRAME L SUB ASY P MOTER ASY PICK MOTOR SCREW PM BRACKET ASY TAPPING SCREW GEAR P MFF GEAR A ASY GEAR GEAR MFF GEAR D MFF GEAR E MFF GEAR BRACKET COVER L ASY LOWER COVER L MFF RUBBER PLATE L ASY LOWER PLATE L RUBBER FOOT SNAP RING TAPPING SCREW PTGL DUMPER TAPPING SCREW L TYPE STAY BINDING HEAD SCREW LOWER STAY BINDING HEAD SCREW FRONT STAY TAPPING SCREW PR GUIDE L ASY PR GUIDE L PRGL LABEL COVER OPEN SW FG PLATE P TAPPING SCREW O O O O O O O O O O O
7. 2 era e aaa gece evs sea ce ae oven Pe Yee ee Ee ep roS ER 4 45 3 TE ser unit ian ai et E tti eth e rt eet e et stes 4 46 4 Mam miotor unit eere 4 47 5 Brame 2 assembly ctr E ette eror ERR SERE ERA R EE acd 4 48 6 Guide assembly 5 ener reine o eet ee Ve D epe e ede 4 49 7T Heed 2 assembly 2 55 notet RE 4 50 8 Gear box assembly eere 4 5 9 Gear box leyerassembly a t PR 4 52 10 Developing unt Ite rae a tienes ie dedit 4 53 11 Magnet roller bracket assembly sees enne eee 4 55 12 Heat roller s b nit eee ed tee 4 56 13 roller htt e te re e atr nie rer des 4 57 4 10 DIAGNOSTICS trece e ertet peer dg 4 58 4 10 1 Printing the Status Report teret pi re parie See D PER PE Erro EGRE 4 58 4 10 2 MarkVision Printer Management Utility Program by Lexmark 4 61 1 Installine ERR HERES us SE er ERE RP ER EE RE ERE REESE REUS 4 61 2 Men bar fUnCti Ons cer rr RR RU e a e tiet tei aedi 4 62 4 10 3 PPMENU Program 5 oit eee ERR EE ER ET EQ t Rr 4 63 Dy Installing PPMBENU ee XE ERE DEP ERES a eee PERPE Eds 4 63 2 Menu functions and items nas aeter fue d i ede cs 4 64 4 10 4 Special Fu
8. 3 6 Base Frame Parts name Description Composition amp Quantity Specification SO chon P CO m B e 1 1 1 2 Imo PN lt mmt d CCPAE mmu CA04040 F470 CA04040 471 CA02758 6G611 CA02758 Y513 CA02758 Y605 CA02758 Y614 02758 7621 CA02758 G627 CA02758 Y623 CA02758 Y625 CA02758 2011 CA02758 2012 CA02758 Y458 CA04040 F450 CA02758 Y103 02258 0195 CA02758 2806 CA04040 F221 CA04040 0201 CA02758 G222 F6 SW2N3 08111 CA02758 Y224 CA02758 G604 CA02758 0603 02758 6500 02258 605 02758 642 CA02758 Y643 CA02758 Y644 02758 641 F6 WM3 111 F6 SN2TP3 06 C A02758 Y654 CA02758 Y729 02758 7152 02758 153 02758 154 CA02758 Y155 CA04040 Y466 CA02758 Y43 CA02758 2805 CA02758 Y193 A02758 194 CA02758 Y Oty CA02758 0195 04040 460 04040 461 CA04040 Y462 CA04040 467 CA04040 Y468 3 13 BASE FRAME ASY BASE FRAME FEED ROLLER ASY GEAR F BEARING PF FG PLATE FR RESIST ROLLER LEVER ASY BEARING R SPRING R SHEET REl SHEET RE2 FG PLATE T TRCG UNIT PAPER GUIDE F TAPPING SCREW DUMPER F R MOTOR ASY REGIST MOTOR RM BRACKET ASY SCREW GEAR R SHAFT P ASY PICK GEAR ROLLER P ASY BEARING PF RACK GUIDE FL GUIDE FR PINION
9. The bit map data is generated by the CPU All data to be transferred to the FEIT LSI is stored in the bit map memory The bit map memory uses parts of the resident RAM and expansion RAM The controller LSI has many auxiliary circuits to process data such as rotate expand shrink and mirror The CPU generates bit map data by itself or by the auxiliary circuits The generated bit map data remains until it is transferred to the FEIT LSI 3 Video data transfer 4 5 When the engine controller starts the motor and paper moves along the paper path The engine controller checks sensors on the paper path When the paper reaches the position from which video data must be prepared the main controller starts the video data transfer from LSI 1 The LSI starts transferring bit map data from the bit map memory to the buffer memory in the LSI 1 under control of the DMA in the LSI 1 The stored data is transferred to the FEIT LSI in synchronization with the clock signals CLD which is generated by the FEIT LSI This controller generates other signals for the laser unit LD unit such as latch pulses and strobe pulses The timer circuit prepares the original times signal every raster from which the video timing controller generates the above three signals The FEIT circuit in the LSI receives the image data from the video buffer inside he LSI 1 and it calculates the image data for enhancing the image The calculated result is sent as video da
10. WASHER TAPPING SCREM SENSOR LEVER 4 TRIDENT LEVER SPRING SPRING HV2 SPRING SPRING H 4 SPRING HVS TRCG STOPPER SOUND PROOF P GUIDE FG L P GUIDE FG R STOPPER TAPPING SCREW DCH GUIDE ASY DCH GUIDE PLATE A DCH PLATE DCH PLATE OOOOO OOOOOOOOOOOOO OOOOOO 0000 OOOOO 00000000000000000 2H OOOOO 0000000000000 OOOOOO OOOO 3 7 Laser Diode Stay 3 7 Laser Diode Stay EX mA 04040 6525 CA02758 Y121 TK CA02758 0120 02758 063 F6 SW2N3 08111 02758 6123 02758 0123 02758 124 02758 680 02758 680 02758 6682 02758 682 02758 673 CA02758 F690 CA02758 Y690 CA02758 G692 CA02758 Y684 02758 6685 CA98001 5552 02758 688 02758 592 02758 591 DCH LED UNIT PAPER FRAME 2 FEED SPRING 2 PINCH ROLLER ROLLER GUIDE O O O O O amp 04040 154 3 8 Power Unit 3 8 Power Unit Composition amp Quantity QO b B Specification CA04040 F544 CA04040 F545 CA02758 G135 CA02951 4260 02951 4265 02758 0197 F6 SW2N3 06121 CA02758 Y137 CA02758 Y655 CA04040 F590 CA02758 Y680 CA02
11. 1 Screwdriver Phillips 1 For M3 and M4 2 Screwdriver standard 1 For M3 3 Screwdriver standard 1 For M4 4 Long nose pliers 1 5 Diagonal cutting pliers 1 4 4 MAINTENANCE LEVELS Maintenance for the LN15 page printer is divided into two levels Level 1 Level 1 maintenance can be done by the printer user It includes cleaning and consumables replacement only Level 2 Level 2 maintenance includes level 1 items cleaning plus replacement of PC boards electrical units and mechanical subassemblies 4 5 PREVENTIVE MAINTENANCE No scheduled maintenance is required However a clean printer has a longer service life and MTBF Note Clean the corona wire of the transfer charger unit and the precharger wire of the print unit whenever the toner bottle or the print unit is replaced 4 6 PARTS DRAWINGS This section shows the locations of the basic components Shade cover cleaner assembly inside Top cover Paper stacker Upper door Paper guides for manual feeding Multi function feeder MFF Front cover opened Stacker full sensor Control panel Slide cover Font emulation card slot and RAM card slots inside Paper guides for stack feeding Multi function feeder cable Paper tray Front and right side view Interface board Rear stacker slot cover M3 Pel toe Centronics parallel interface connector Power switch Power cord connector Rear
12. 220 240 VAC Secondary power 24 VDC Secondary signal 5 VDC High voltage CNxx Connection via connector Figure 5 7 Connection Diagram 5 7 5 3 2 Main Controller Figure 5 8 shows a block diagram of the main controller of the laser printer LN15 This controller provides the HP LaserJet emulation and the PostScript level 2 emulation The main controller uses a Fujitsu MB86936 processor The standard amount of RAM is 3M bytes The program ROM is 4M bytes The font ROM is 6M bytes Up to 64M bytes of memory can be added by installing optional memory cards There are three SIMM sockets for option cards The upper two are for optional memory cards DRAM modules and the bottom one is for an optional emulation card or font card of the future Each DRAM module is up to 32M bytes The parallel interface is a Centronics type The printer supports Compatible mode and Nibble mode bi direc tional mode An EEPROM of 4K bits is used to store user settings The control panel driver receiver controls or reads the LCD four LEDs and eight switches on the control panel The LCD displays messages 16 characters x two lines The LEDs include POWER ONLINE DATA and ERROR The switches execute many functions like self test reset and menu mode The laser printer LN15 has an expansion interface slot in which one of the three types of interface board can be installed Ethernet interface boards RS 232C interface boards and Loc
13. Is transfer corona Clean transfer corona wire dirty wire See page 4 8 precharger Yes electrode apart from high Attach electrode gt voltage electrode cleaner dirty Replace cleaner See page 4 9 back up roller in the fuser unit dirty Improved by cleaning back up roller Does LCD display REPLACE PARTS Replace back up roller No Replace print unit Replace print unit Unit is defective Unit is at the end of life See pages 2 3 and 3 20 to 21 Y lt Ca 8 Dirty back edge Is paper guide dirty transfer corona unit dirty Is precharger wire dirty Does LCD display REPLACE PARTS No Is cleaner dirty mee No Is heat roller Yes dirty No Is Yes backup roller dirty No Note Clean paper guide See pages 4 7 to 8 Clean transfer corona unit gt See page 4 8 Clean precharger wire See page 4 9 Replace print unit See pages 2 3 and 3 20 to 21 Replace cleaner gt See page 4 9 Clean heart roller in the gt fuser unit Clean backup roller in the fuser unit Replace printer mechanism assembly lt If a large amount of toner is spilled or collected in the p
14. PW STOP signale te RO e ete eere eU 5 26 CHAPTER 6 REPLACEMENT PARTS enne enne tree etre trennen teen tentent nennen 6 1 ILLUSTRATIONS AND TABLES Figure 1 1 Digital Laser Printer 15 1 3 Figure 122 Steu ture esr rn dock e ve ei E d en epe Pet 1 5 Figure 1 3 Unit Rent ode deter te E RR I Pre Et ate ee e veta EES 1 7 Figure 1 4 Printer Mechanism eet tec eere ee eese eere eel eine 1 8 Figure 1 5 Power Supply Unit nee eee PRU SER ERN 1 10 Figure 1 6 Control Board iiiter ettet tee 1 11 Figure 2 1 Shipping Carton and Printer and its Accessories 2 2 Figure 2 2 Status Report FPS 2 6 Figure 3 1 Printer Elements and Connections 3 2 Figure 3 2 Abnormal Print Quality 3 4 Figure 4 1 Basic Components eee terere t Te e ee vases 4 4 Figure 4 1 Basic Components Continued esses eee nennen nennen 4 5 Figure 4 2 Cleaning the Paper 4 8 Figure 4 3 Cleaning the Corona Wire iore ee E eri petit etri e re iei 4 8 Figure 4 4 Cleaning the Precharger 4 0 Figure 4 5 Status Report FPS Emulation sees ne
15. Replace print unit Unit is defective Adjust density dial See page 4 5 See pages 2 3 to 4 Clean transfer corona gt wire See page 4 8 Replace print unit Unit is at the end of life See pages 2 3 and 3 20 to 21 See pages 2 3 and 3 20 to 21 Replace toner bottle End 2 When deep C Is density dial No proper Adjust density dial See page 4 5 Yes See pages 2 3 Replace print unit 3 Black vertical line C Is precharger wire dirty Does LCD display REPLACE PARTS No Unit is defective Clean precharger wire See page 4 9 Replace print unit Unit is at the end of life See pages 2 3 and 3 20 to 21 Replace print unit See pages 2 3 and 3 20 to 21 4 White vertical line Co Is window of laser unit dirty transfer corona wire dirty Does LCD display REPLACE PARTS No Clean the window glass of laser unit See page 4 18 Clean transfer corona wire Replace print unit Unit is defective See pages 2 3 and 3 20 to 21 Cm See page 4 8 Replace print unit Unit is at the end of life See pages 2 3 and 3 20
16. Shade cover cleaner assembly inside Top cover Paper stacker Upper door Paper guides for manual feeding Multi function feeder MFF Front cover opened Paper guides for stack feeding Front and right side view Interface board slot cover 7 T Centronics parallel interface connector Stacker full sensor Control panel Slide cover Font emulation card slot and RAM card slots inside Multi function feeder cable Rear stacker Power switch Power cord connector Rear and left side view Figure 1 1 LN15 Laser Page Printer 1 2 3 Structure The standard printer without options has the following structure LN15 Laser printer Covers Laser unit Printer mechanism Print unit OPC drum unit Developing unit Toner bottle Cleaner assembly Cleaner Cleaner holder Power supply unit Main power supply Power switch AC inlet Fuser unit Cover Paper guide assembly 1 Paper eject sensor Paper guide Guide open switch Fan 2 Shield plate Control board Sensor board assembly Sensor boards High voltage power supply board Paper empty sensor Paper tray Friction pad holder Multi function feeder MFF Upper cover assembly Ozone filter Control panel Shade cover Side cover L Side cover R Front frame Toner empty sensor Front cover Back cover Rear stacker Metal frame Fan 1 Proces
17. TAH SPW T amp Quantity eo OOMOO 069 Specification CA04040 C500 CA04040 C531 04040 550 04040 500 02758 12 02758 14 F6 SBD3 06121 CA02758 G815 CA02758 Y815 02758 816 02758 818 02758 811 02758 813 04040 854 04040 859 04040 701 04040 702 04040 544 CA04040 F545 CA04040 F470 CA04040 6G525 CA02758 0195 CA02758 0126 CA04040 G521 Parts name Description PRINTER PRINTER PRINTER MECH UNIT SIDE COVER R BACK COVER BINDING HEAD SCREW STACKER ASY STACKER REAR LABEL S LABEL SIDE COVER L FRONT COVER LOGO LABEL LOGO LABEL PAPER TRAY PAPER TRAY POWER UNIT POWER UNIT BASE FRAME ASY LD STAY ASY TAPPING SCREW OZONE FILTER CLEANER 000000000 E OO Oo OO 00 O FE LETTER 120V A4 220 240 4 11 4 LETTER 100 120V 220 240V 3 4 Printer Mecha Unit 1 7 OP Us 9 VE JER iN 4 SRY ub Uu f NN STA VAN SG a N _ 7 Li 34 Printer Mecha Unit 1 Parts name Description Index No Composition Specification amp Quantity 1 9 CA02758 y 149 HV UNIT 1 02758 6150 BOARD COVER
18. b Remove the toner bottle from its envelope c Fully shake the toner bottle d Remove the plastic seal from the toner bottle Pull off the seal as gently as possible to avoid spilling toner Be careful not to stain yourself with toner which is stuck to the seal e Install the toner bottle Slide in both projecting guides of the toner bottle along the grooves of the print unit f Lock the toner bottle Press the toner bottle backward until it clicks into place The bottle stands nearly upright when installed correctly Never rotate the toner bottle from an upright position except when empty or you will cause toner leak and print quality issue could occur g Close the printer s upper door Press down firmly on the front portion of the upper door and make sure the upper door is locked completely ACA UTION Be sure to hold the toner bottle while removing the seal to avoid spilling toner If you have installed the toner bottle never remove it from the print unit until it has no toner to avoid spilling toner inside the printer Load paper in the paper tray If the front of the pressure plate is raised push it down until the plate clicks into place Fan a paper stack both ways to prevent sheets from sticking together Place the paper stack on the paper tray while sliding it forwards Connect the power cord Be sure the voltage stated on the manufacturer s plate on th
19. FIFO system is selected When the host computer requires special communications with the printer the FIFO system is switched off Host data is then stored in the data latch register and the return signals BUSY and ACK are controlled by a processor in the controller According to the FCC Class B rule the parallel interface cable should be 3 meters 10 feet long or less e Serial interface The serial interface is an RS 232C 422A version using a male D SUB 25 pin connector Itis control led by the LSI The baud rate is selected by the control panel The communication speed is from 1200 to 57 600 bits second According to the FCC Class B rule the serial interface cable should be 15 meters 50 feet long or less 5 11 5 12 EEPROM Nonvolatile RAM control The controller has a non volatile RAM X24C04 or equivalent with a capacity of 4K bits The processor communicates with the non volatile RAM via the LSI 1 serially One bit is read or written at a time to the EEPROM by the I O port and firmware The read write speed is thus slower in comparison with the RAM connected to the bus Data processor The LSI 1 has the following data processing circuits Data rotate The data size of rotation is 32 x 32 bits Data is set by the CPU and the rotated data can be soon read by the CPU Data expand shrink The expand shrink circuit expands 16 bit data to 32 bit data or shrinks 64 bit data to 32 bit data Data is set by the CPU and the
20. IA D U WU NI Hook Frame 2 assembly Laser unit Installation Reverse the removal procedure 20 Multi function feeder board MFF board replacement Removal 1 Remove side cover R See Item 1 Upper cover replacement 2 Remove the cable from the MFF board 3 Remove the screw at the top side of the board Installation Reverse the removal procedure 4 40 21 Separator assembly friction pad holder replacement Removal 1 Remove the paper tray from the printer 2 Place the paper tray upside down and push in the four points of the lower paper guide to release and remove it 3 Push in the two hooks of the separator assembly friction pad holder to release and remove it Remember to keep the spring Installation Reverse the removal procedure 22 Print unit disassembly Disassembly The print unit consists of two main parts developing unit and OPC drum unit They can be easily separated from each other 1 Open the upper door and remove the print unit from the printer 2 Remove the two clamps at both ends of the print unit 3 Slide off the OPC drum unit along the grooves on the developing unit Developing unit OPC drum unit Assembly Connect the OPC drum unit to the developer unit by reversing the procedures for removal 4 0 2 Lubrication and Precautions This section describes the lubrication procedures
21. SG SG 25 READY R ONLINE Button 56 SG RV board Print density dial signal Variable resistor SG Figure 5 16 Control Panel Block Diagram 5 25 5 26 5 3 7 Power Supply There CA02451 4265 power supply is used for 220 to 240 VAC The power supply outputs 5 V for the logic circuits and 24 V for the printer mechanism drivers and the high voltage power supply It also controls the AC input voltage for the fuser unit s heater Figure 5 17 shows the block diagram of the power supply AC input to this power supply via a power switch is converted to DC by rectifier and filter circuits The amount of inrush current is limited by a negative tempera ture coefficient thermistor Next the DC is converted to AC in a high frequency switching circuit and its voltage is reduced by a step down transformer Then the AC is again rectified and smoothed before being converted to DC This power supply has a receiver of the input signal that turns the power supply off 1 Overcurrent protection e If 24 V overcurrent is detected all output voltages are automatically shut down by the emergency stop control 2 Overvoltage protection e Ifa 5 V overvoltage condition occurs all output voltages are shut down by the 5 V overvoltage protection circuit e Ifa 24 V overvoltage condition occurs all output voltages are shut down by the emergency stop control 3 PW STOP signal The PW STOP signal is sent from the contr
22. Tray EE 3 20 3 11 Print Unit EE 3 22 3 12 O CET EE 3 24 This document is used for maintenance purpose only The illustration of the part does not guarantee its availability 3 PARTS LIST AND PARTS DRAWING OF PRINTER MECHANISM 3 1 Visual Index of Parts 3 12 Cleaner 3 11 Print Unit 3 2 Upper Cover 3 8 Power Unit 3 3 Printer 3 10 Paper Tray 3 9 Heat Roller Unit 3 7 Laser Diode Stay 3 4 Printer Mecha Unit 1 3 6 Base Frame 3 5 Printer Mecha Unit 2 T e 4 1 HOW TO REFER TO THIS MANUAL Example 5 30 Q 6 e eo Parts name Remarks Description Composition Specification amp Quantity CA04040 G102 CA04040 G103 CA04040 G104 CA04040 G260 CA04040 G261 CA04040 0260 F6 SW2N3 06111 CA04040 Y263 04040 265 F6 SW2N3 06111 04040 267 04040 269 04040 145 CA04040 G275 04040 276 04040 277 6 5 2 3 05 CA04040 G278 BASE FRAME ASY BASE FRAME S ASY FRAME ASY M BRACKET ASY M BRACKET S ASY STEPPING MOTOR SCREM GEAR V GEAR W SCREW GEAR X GEAR Y SENSOR ive SIDE GUIDE L ASY SIDE GUIDE L RACK L TAPPING SCREM SIDE GUIDE R ASY B 9 amp 9 b This figure shows the index number of the part in the drawing These columns show the construction levels A higher level part consists of the following lower leve
23. and Left Side View Figure 4 1 Basic Components Toner bottle Print density dial Interior with the Upper Door Open Figure 4 1 Basic Components Continued 4 7 PARTS THAT MUST NOT BE DISASSEMBLED Table 4 2 lists components that are not to be disassembled Table 4 2 Parts That Must Not be Disassembled No Parts Name Specification Remarks 1 Print unit CA02758 E400 Allowed only to separate OPC drum LN15X AB Drum from developing unit 2 Toner bottle CA02758 E300 LN15X AA 2 Bottles toner cartridges 3 Heat roller unit CA04040 C941 For 120 VAC model LN15 AD Fusing Unit 4 Transfer charger unit CA04040 F450 4 8 LEVEL 1 MAINTENANCE Level 1 maintenance includes only cleaning and consumables replacement that can be performed by the operator without removing any cover 4 8 1 Cleaning First check the inside of the printer for paper particles dust and other foreign matter Remove them if any as explained in the table shown below If replacement is necessary see the procedures explained in this chapter The areas to be cleaned and the procedures for cleaning are listed in Table 4 3 Table 4 3 Cleaning No Area to be cleaned Specification Remarks Base frame Remove paper particles toner and dust Use a damp cloth 2 Pressure roller Open the upper door Then wipe the roller Be careful not to damage the with a cloth dampened with ethyl alcoho
24. frame ground cover and the laser unit There is a glass window on the bottom of this side Frame ground cover is removed from the top of the laser unit Installation Reverse the removal procedure 4 Fuser unit replacement WARNING WAIT 5 MINUTES AFTER POWER DOWN BEFORE REMOVING THE FUSER UNIT Removal 1 NAW Open the shade cover See Section 4 8 2 Consumables Replacement Remove the cleaner assembly See Section 4 8 2 Consumables Replacement Remove side cover R See Item 1 Upper cover replacement Remove the shield plate See Item 1 Upper cover replacement Disconnect the connector for FAN2 from the control board Remove the rear cover See Item 1 Upper cover replacement Remove four screws from the rear of the unit to draw out the subassembly of the power supply board and the fuser unit Notes 1 The power supply board and the fuser unit are hot immediately after printing 2 Remove the power supply board and the fuser unit carefully Remove the rear stacker 9 Disconnect the two connectors while pressing the connector lock with a standard screw driver as shown below The following illustration shows the side that faced to the front of the printer when the unit was installed 10 Remove two screws from the front of the unit to separate the fuser unit from the power supply board 11 Remove the power supply board from the subassembly See Item 5 Power supply boar
25. paper The capacity is 100 sheets for 0 09 mm thick paper or 30 envelopes CHAPTER 2 INSTALLATION 2 1 GENERAL DESCRIPTION The LN15 laser printer is well packed for shipping and can be unpacked easily After the printer is unpacked it should be checked with a test printing prior to final installation Installation procedures are simple and require a minimum of time 2 2 INSTALLATION PRECAUTIONS Observe the following points when installing the printer Install the printer on a level surface that does not have excessive vibration Place the printer in a well ventilated room free of excessive dust Do not place the printer in direct sunlight or near a heater Do not expose the printer to high temperatures or high humidity Temperature range is from 10 C to 35 C or 50 F to 95 F Humidity range is between 20 RH and 80 RH The maximum wet bulb temperature is 29 C or 84 F Do not block the ventilation at the top and left sides of the printer Use only the power cord supplied with the printer Do not use an extension cord Use a grounded AC power outlet supplying a stable voltage of the rated value marked on the nameplate at the back of the printer 85 to 110 percent for 220 to 240 VAC Avoid sharing power outlets with equipment that emits electrical noise or causes power degradation 2 3 UNPACKING If possible retain the carton and packing materials should the printer be reshipped 1 P
26. sng ETE J SS9Xppy romeo Wi 9 ssexppy S EUZIS 9AUp xotq eu es Ndo T P Die ey S EUSIS 017103 1510 33Id 324 1 3 1 me VILSONO 5180315 sali 101000 35789 D I 8 dWHNO S EUZIS SATI 10700 Ute poem pod 180816 103 EW WANO Video interface 5 16 The following are additional information on each block 1 CPU The CPU is a one chip micro processor without built in ROM Processor speed Internal memory Input ports Output ports Input output ports Registers Timer and Counter 10 MHz RAM 512 bytes 14 12 10 8 bits x 8 bits x 4 banks memory mapped 16 bit timer counter 2 channels 8 bit timer counter 1 2 channels 8 bit timer counter 2 1 channel 8 bit timer counter 3 1 channel CSI 3 wire serial I O 8 bits and 8 channels Serial interface A D converter Interrupt signals internal 12 and external 7 Package 64 pins plastic QFP 14 mm x 14 mm The external memory LSI can be accessed through the multiplexed bus ADO AD7 address bus A15 A8 and RD WR ASTB signals The A D converter in the CPU receives analog data from sensors and changes it to digital data Sensors include the temperature sensor and the toner empty sensor The motors are controlled by the CPU timer amp IRQ The firmware sets the time data and starts the timer When the timer has reached the settin
27. the ENTER button when the desired function is shown Notes To stop or quit the maintenance mode turn power off 2 Never execute function modes 2 1 to 2 11 that are for factory use only The user s setup data or mechanism dependent adjustments will be lost VALUE 3 gt VALUE 4 VALUE 5 gt 3 Information printed in test print mode The first page of the test print in maintenance mode contains the following information in the second to eighth lines of text before a continuous print of ASCII text VALUE 1 VALUE 2 A 5 12345 a lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ WM abcdefghijkImnopqrst 00000001519 0000000002 lt gt ABCDEFGHUKLMNOPQRSTUVWXYZ WM abcdefghijkImno DIGITAL Laser P 56789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ W abcdefghijkImnopq MFG DIGITAL 3456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ V abcdefghijklmnop CMD NDAP PJL PCL PS lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _abcdefghijkImnoqr MDL Laser printer 15 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _abcdefghijkImnogr 00008741 2345678 lt gt ABCDEFGHIJALMNOPQRSTUVWXYZ WM abcdefghijkImnopqrstuvw 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklmnopqrstuvwxy 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ WV abcdefghijkImnopqrstuvwxyz 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _abcdefghijklmnopqrstuvwxyz VALUE 1 Total num
28. the duplex unit Cause Malfunction in the fuser unit Solution If the error recurs consult your dealer for service Cause Incorrect SIMM card optional emulation or font installed Solution Press the CONT button Cause FPS job timeout Solution Press the CONT button Cause Paper mismatch occurred Solution Set the specified tray to the correct paper size specified Cause Paper was not inserted into the manual feed slot in the prescribed time Solution Press the CONT button Cause Memory overflow error Solution Press the CONT button To be continued Table 3 1 Error Messages Continued Message Causes and solutions MEMORY SHORTAGE MFF NOT INSTALL MOTOR FAILURE NO PROCESS UNIT OVERRUN ERROR PAPER JAMn PS ERROR mn Source PAPER OUT STACKER FULL SYSTEM ERROR TRAYn MISS SET TONER EMPTY Cause Insufficient memory Solution Add RAM board Cause No MFF installed Solution Install the MFF Cause Malfunction in the feed motor etc Solution If the error recurs consult your dealer for service Cause No print unit is installed Solution Install the print unit Cause Incomplete in extracting compressed data Solution Press the CONT button Cause Paper jam in the specified position Solution Clear the jammed paper from the following area 0 Pick roller 1 Entry to paper path 2 Paper path 3 Ejection
29. 0 C942 4 9 1 4 For 120 V model For 220 240 V model Recommended Spares List Parts that are to be repaired will be designated on the RSL by Genicom All repairable under warranty will be returned to Genicom Americas are instructed to return defective repairable parts to SR126 Contoocook N H Europe is instructed to return defective repairable parts to SR821 Nijmegan AP operations to return defective parts to either GSO Singapore or GSO Sydney OPTION DIGITAL P N DESCRIPTION VENDOR P N SOURCE USED ON LN15 FD 81706 C1 COVER OPEN SWITCH CA02758 G127 GENICOM FUJITSU LN15 81711 UPPER COVER CA04040 G551 GENICOM FUJITSU LN15 81718 CA02758 0129 GENICOM FUJITSU LN15 FD 81724 Cl PICK MOTOR CA02758 0201 GENICOM FUJITSU LN15 81733 MAIN MOTOR CA02758 0251 GENICOM FUJITSU LN15 81735 2 55 CA02758 F680 GENICOM FUJITSU LN15 FD 81737 Cl SF SENSOR BOARD CA02758 F696 GENICOM FUJITSU LN15 FD 81738 C1 FAN CA02758 G128 GENICOM FUJITSU LN15 81741 MFF BOARD CA02758 G181 GENICOM FUJITSU LN15 81742 PSS BOARD CA02758 G182 GENICOM FUJITSU LN15 81743 ROLLER 55 CA02758 G600 GENICOM FUJITSU LN15 FD 81745 C1 FEED ROLLER ASSY CA02758 G612 GENICOM FUJITSU LN15 81747 POWER BOARD CA02951 4265 GENICOM FUJITSU LN15 81748 HV BOARD 02951 4291 GENICOM FUJITSU LN15 FD 81749 C1 OPERATOR PANEL CA04040 G574 GENICOM FUJIT
30. 5 PostScript Compatible Fonts CA04040 Page Printer Courier Courier Bold Courlier Boldobliique Cour ter Obligue Helvetica Helvetica Bold Helvetica BoldOblique Helvetica Oblique Helvetica Narrow Helvetica Narrow Bold MHelvetica Marrow BoldOblique Helvetica Narrow Obique Times Roman Times Bnld Times Boldiiatic Times Palic Symbal lalatino Roman Talatino Bold Palatino Bolditalte Palatino Halic NewCenturySchlbk Roman NewCenturySchibk Bold NewCenturySchlbk Boldltalic MewCenturySchlbk Italic AvantGarde Book AvantGarde BDemi AvaniGarde DemiQblique AvontGarde BookObique Bookman Light Bookman Demi Bookman Demiltalic Hookrnan Lightitalic ZapfChancery Mediumitate apDingbats ABCDabcdl234 ars AECDabhcd1234 1085 1234 ABCDabogis34 g45 ABCDabed1234 ABCDabed1 234 84 ABCDabcdl234 5 1234 0 3 ABCDabcd1234 94 ABCDabcd1254 G4 ABCDabcd1234H 8 8 ABCDabod 12341 Bes 1234 245 ABCDabcd1234 693 ABCDabcd1234 88 AB8CDabcd 234 23 81234 3 1234 ABCDabcd1234 84 ABCDabcd1234 8 9 ABCDabcdT234 888 1234 82 ABCDabcd1234 4 ABCDabcd1234 84 8 ABC Dabcd 1834688 ABCDabcd1234 5 ABCDabed12341 45 ABCDabcd 12341G 5 ABC Dabed 1234 ses ABCDabed 12341048 ABCDabcd12341945 ABCDabcd123479 545 ABCDabcd 1 2349485 ABC Dabed 1234 65 uh S Bem DRE Figure 4 6 Font
31. 554 Installation Reverse the removal procedure Reference The resist motor derives from the resist roller in contact with the feed roller which momentarily blocks the paper feed from the pick up roller to align the paper 14 Paper feed roller replacement Removal 1 Remove the upper cover and side covers L and R See Item 1 Upper cover replacement 2 Remove three screws disengage three hooks and disconnect the toner sensor connector to remove the front frame Front frame 3 Remove the right and left springs of the resist roller and lift the resist roller to remove it Peel off the two guide sheets Mylar films Be sure to clearly remove the remaining substance of the double sided adhesive tape 5 Disengage the bearing phase shift levers at the both ends of the paper feed roller using a standard screwdriver and raise the levers upwards to remove the paper feed roller Spring Guide sheets Bearing Resist roller 6 Cut the hook of the gear at the right end of the paper feed roller using a diagonal cutting pliers 7 Move the paper feed roller to the left and pull out the roller from the left end Paper feed roller Bearing Gear Hook Installation Reverse the removal procedure Notes 1 When installing the paper feed roller a Fit one bearing to the left end end without a D cut of the paper feed roller b Insert the right end D cut of the paper feed roller into the hole of the o
32. 758 Y679 CA04040 G591 04040 592 04040 0590 CA02758 Y676 CA02758 F670 CA02758 Y670 TK CA02758 G673 04040 672 02758 673 CA02758 2671 CA02758 Y671 CA02758 Y677 F6 SN2TP3 08 CA02758 6678 CA02758 Y661 02758 662 02758 663 02758 664 02758 665 02758 668 CA02758 6128 F6 SW2N3 20111 02758 0195 3 17 Parts name Description POWER UNIT POWER UNIT PB COVER POWER BOARD POWER BOARD TAPPING SCREW SCREW SWITCH COVER SENSOR LEVER 5 PAPER FRAME ASY PAPER FRAME SENSOR LEVER 6 EJECT ROLLER ER BEARING ONE WAY CLUTCH SIDE FRAME LP PAPER GUIDE ASY PAPER GUIDE FEED 1 ASY FEED SPRING 1 PINCH ROLLER STACK LEVER P LABEL SIDE FRAME RP TAPPING SCREW SWITCH ASY GEAR 1 GEAR 2 GEAR 3 GEAR 4 GEAR 5 FAN BRACKET FAN ASY SCREW TAPPING SCREW O O O O O 100 120V 220 240V 3 9 Heat Roller Unit es pe 3 9 Heat Roller Unit Cono Composition amp Quantity e CA04040 F501 CA04040 F502 CA04040 G501 04040 6502 04040 6510 CA02758 G519 04040 5513 02758 2531 98001 6511 CA04040 G511 CA02758 Y532 CA02758 Y533 02758 535 CA02758 2534 CA02758 Y541 CA02758 0195 CA02758 0544 CA02758 019
33. 9 CA02758 6560 CA02758 Y560 02758 561 02758 562 02758 0195 04040 155 02758 538 02758 539 02758 0511 02758 0512 02758 577 02758 0195 02758 573 02758 0195 02758 6581 CA02758 Y581 CA02758 0582 CA02758 0584 F6 SW2N3 06121 CA02758 0195 CA02758 Y579 CA98001 5557 02758 6727 CA02758 2525 CA02758 0195 CA02758 2526 CA02758 0195 3 19 Parts name Description HR UNIT HR UNIT HR SUB UNIT HR SUB UNIT HR BASE UNIT HR FRAME ASY 1 BU ROLLER ASY BEARING BR BEARING HEAT ROLLER ASY BEARING HR GEAR HR RING HR SPRING BR HR FRAME U TAPPING SCREW THERMISTOR ASY TAPPING SCREW SEPARATOR ASY PLATE SP SEPARATOR SPRING SP TAPPING SCREW HR COVER R GEAR HGI GEAR HG2 HEATER LAMP HEATER LAMP HR COVER SR TAPPING SCREW COVER SL TAPPING SCREW TH HOLDER ASY HOLDER THERMOSTAT ASY HR CABLE ASY SCREW TAPPING SCREW HR COVER F CONNECTOR PAPER GUIDE HR PLATE L TAPPING SCREW PLATE R TAPPING SCREW OOOOOOOOO OOOOOOOOO 00000 120V 220 240V 120V 220 240V 120V 220 240V 3 10 Paper Tray 3 10 Paper Tray Composition amp Quantity e e e Specification CA04040 F701 CA04040 F702 CA04040 G701 04040 725 04040 726
34. ASY 2 CA02758 2149 SHEET 3 CA02758 2651 PE LEVER 4 CA02758 2144 HV GUIDE 5 CA02951 4291 HV BOARD 6 CA02758 0195 TAPPING SCREM 7 04040 6595 MECH BOARD 8 CA02758 0195 TAPPING SCREM 9 CA04040 Y598 SHEET P1 0 F6 SW2N3 08111 SCREW D860 1173 X826 CA04040 G572 02758 0195 KNOB VOLUME BOARD TAPPING SCREW CA02758 G171 MFF BOARD F6 SBD3 06121 SCREW 04040 568 MFF CABLE CA02758 Y122 LD CABLE CA04040 Y556 METAL FITTING F6 SW2N3 06121 SCREW CA04040 2500 ROM BOARD F6 SW2N3 08121 SCREW CA04040 F569 CABLE ASY DOK OGQOADKOKOD CA02758 F695 SF SENSOR ASY CA02758 G696 SFS BOARD CA02758 Y696 SFS LEVER 02758 697 SFS COVER 02758 698 SFS CABLE F6 SN2TP3 06 TAPPING SCREW CA04040 G560 SHIELD ASY F6 SW2N3 08121 SCREW 04040 552 SHADE PLATE F6 SBD3 06121 SCREW CA04040 Y555 BACK COVER F6 SBD3 06121 SCREW F6 SW2N3 06121 SCREW CT F38H11 8 15 7 3 FELIGHT CORE CA98001 6702 CA04040 Y561 F6 SW2N3 06121 04040 580 CABLE CLUMP SIMM COVER SCREW FG SPRING PLATE 02758 6817 02758 817 02758 6360 F6 SN2TP3 06 FRONT FRAME ASY FRONT FRAME TS ASY TAPPING SCREW o0 DOOD 60000006 ee 02758 024 02758 0196 RF PLATE TAPPING SCREW 00000000 OOOOOO 0000000000018
35. DCLK 80 5CLK1 to 3 gt ADO to lt gt To each 151 internal 089 to 7 control block 05 a bit shift Dot clock WINI register 1 MONI 8bit 9 E Serial parallel video data circuit 8 bit register Address SRANI Kx 8 bit 1 7 12 for scanning RESET SRAMG 1X x 8 bit 6 12 18 for scanning Video data latch Wiados registers 2 7 register 8 bits Sub bit Video data tatch generation and registers latch circuit 8 bits Figure 5 13 Block Diagram Internal Configuration 5 21 5 22 5 3 5 Printing Method 1 Print control process The controller receives data from the host computer The CPU inside the controller fetches the program from the ROM and reads data sent from the host computer The CPU manages and processes the data according to the program The CPU converts the data to bit map data and stores it in the bit map memory When the CPU recognizes that preparations for printing are complete it starts the engine controller via the video interface If the print start is detected the engine controller checks the mechanism status such as paper position heat roller temperature etc If the engine controller recognizes that preparations for printing are complete it starts the motor and transfers print data to the laser diode unit LD unit RAM iei 7 Controller Mechanism Motors Figure 5 14 Print Process Block Diagram 2 Bit map data generate
36. DIGITAL Laser Printer LN15 SERVICE MANUAL amp PARTS CATALOG EK LN15X SV A01 CONTENTS CHAPTER 1 GENERAL DESCRIPTION tret tete tete ertet tee ttp edens 1 1 14 INTRODUCTION uite ete pee e ea Od cU V E D UR Pre terns 1 1 1 2 EQUIPMENT CONSTRUCTION tee ese a Ree P e eR 1 2 LEX Generalis eee rette ecd mt e d tne dete 1 2 1 2 2 Model Configuration n niea dioe e tp OE de Ree ERE Rho Ree 1 2 1 2 3 Sttuct tet usua cats Ree Rs eS i REIHE RE Dp 1 4 he ee et ay 1 6 2 cce ce e RE Rete PER Eee E ERE EUN 1 7 3 Printer mechanism ve ete nU cde oem Edi tuae e 1 8 4 Print unit user replaceable 1 9 Cleaner assem Dy e eI GERE Fe E ERN ESTO eet 1 9 6 Powersupply Unt erre et e eee ne neg 1 10 7 Shield plate iecit cp Reo en pb RU e ROO 1 11 8 Control board dla cei RAGA dece tide eie decet 1 11 9 Sensor board assembly ioi REMISE ee IR ei teer rete 1 12 10 Paper tray aceto ete tet eR UE ERR GE eire ER e o E 1 12 11 Multi function feeder 5 Acct eene Gene enne e oben te 1 12 CHAPTER 2 INSTALLATION ne eh e rn e tO eee en ge tette 2 1 21 GENERAL DESCRIPTION 4 tette peperere RO Ree teet omnt 2 1 2 2 INSTALLATION PRECAUTIONS
37. G THE PRINT UNIT FUSER UNIT COUNTER 3 20 3 5 OTHERS iine herren tene teen Ete ttt en eie tsi 3 22 4 MAINTENANCE three bre t t A ete te eh 4 1 4 GENERAL ten eb ete ep ee ne e e m the 4 1 4 2 GENERAL PRECAUTIONS tenni ep pe E REESE REP E POE 4 1 453 MAINTENANCE TOOLS ng Retention en pa ederet o d edt en 4 2 44 MAINTENANCE LEVEES 0s dre D E o RE ER OI ie 4 3 45 PREVENTIVE eR etn o ete Gr tree 4 3 46 PARTS DRAWINGS tentem br ear ree Ee Ero EREE TEASERS 4 4 4 7 PARTS THAT MUST NOT BE DISASSEMBLED eterne nennen 4 6 48 LEVEL 1 MAINTENANCE ehe mt e ete d e d d e treten 4 7 481 Cleaning sot RUBER enr ae 4 7 4 82 Consumables Replacement eet te ee ates aes et eee rrt 4 9 4 9 EEVBE 2 MAINTENANCE OE 4 11 491 Replacement nere ene e Et i be P PER EE RU PEE eR obs 4 11 1 Upper cover replacement esee eene nennen nennen nente enne nete rerit nennen 4 12 2 Control panel replacement eU 4 15 3 Laser unit replacement eere 4 18 4 Fuser unit replacement io eher eter UN REO ERE egt Ret 4 19 5 Power supply board replacement 4 21 6 FAN ITepl cement oso oec rettet entr
38. Report FPS Emulation 4 10 4 Special Functions for Maintenance The Laser Printer LN15 provides special functions which are started by holding the and buttons pressed when the power is turned on These functions are specially provided for service technicians only and useful for checking printer performance and changing printer internal settings during maintenance 1 Maintenance modes Eleven functions are provided see Table 4 5 The first four functions are for checking printer performance and the remainder are for changing printer internal settings The mode is indicated by the TEST PRINT message on the control panel after normal power on initialization Table 4 5 Special Maintenance Modes Mode LCD message Function Remarks 1 TEST PRINT Start continuous self test printing 2 EEPROM CLEAR Clear EEPROM for controller 2 1 EEPROM CLEAR Clear particular area of EEPROM for Factory use only Extension controller 3 EEPROM CLEAR Clear EEPROM for engine 1 Factory use only MECHA CONT 1 4 EEPROM CLEAR Clear EEPROM for engine 2 Factory use only MECHA CONT 2 5 TOP ADJUST TRAY Adjust top edge of print area of paper Factory use only PARA XX fed from paper tray 6 TOP ADJUST MANU Adjust top edge of print area of paper Factory use only PARA XX fed from manual feed slot 7 RESIST ADJUST Adjust resist motor speed Factory use only PARA XX 8 LEFT ADJUST FACE Adjust left edg
39. SU LNI5 81754 TRCG UNIT CA04040 F450 GENICOM FUJITSU LN15 81756 SEPARATION 55 CA04040 G128 GENICOM FUJITSU LN15 81802 VOLUME BOARD CA04040 G572 GENICOM FUJITSU LN15 FD 81803 C1 MECH BOARD CA04040 G595 GENICOM FUJITSU LN15 81804 ROM BOARD CA04040 J660 GENICOM FUJITSU 4 DIGITAL Laser Printer LN15 Parts CATALOG EK LN15X SV A01 CONTENTS 1 HOW TO REFER TO THIS MANUAL cccsscssscssssssoscsecscsscssssssessssnscssssccscccssesececesesersacesses 1 1 2 SPECIFICATIONS ccssssossssesscsorscscescecsseesesees 2 1 3 PARTS LIST AND PARTS DRAWINGS OF PRINTER MECHANISM 3 1 3 1 Visual Index of Parts ccssssssssscssssscsssssccsesessssssnceesnssssccesessessssssessesesesessessssseseasescseacesssseserenssontenss 3 1 3 2 Upper 3 2 3 3 Printer cesssesesssreresecsssesssesnssnsussosssvsssersccssncsuseenenosesssnscscoesessnsssssesessuseescaesesesssscscansussusecescssacsessesensssecsesueeses 3 4 3 4 Printer Mech Unit 1 EMNNMNMMMMMMMMMMM 3 6 3 5 Printer Mech Unit 2 ce ccscsssssssssssesecessensersnenesessesncneseessscassncassesscasssssssessensseseesseeseacssseseesesesessercesssssasssceeees 3 8 3 6 Base Frame 373 3 7 Laser Diode Stay c 3 14 3 8 Power Unit 3 16 3 9 Heat Roller Unit 3 18 3 10 Paper
40. The lubrication code is as follows 2 SG C Y Lubrication cycle every year Lubrication quantity apply oil thin and evenly Lubricant type Silicon grease Item number Item number Serial number of lubrication point on the diagram Lubricant type SG FG SSG SSG MG Silicon grease Molycoat EM30L Dow Yuning Conductive grease FLOIL GE676 Kanto Kasei Silicon grease KF 96H 10000CS Shin Etsu Silicon Silicon grease G501 Shin Etsu Silicon Grease Mobile oil Albania EP grease 1 1 mixing ratio Lubricant quantity One drop Several drops Fill wick case etc Apply oil thin and evenly One spray Lubrication cycle Every 2 months Every 4 months Every 6 months Every 8 months Every year At overhaul 4 43 4 44 1 Base frame assembly Item No Lubricant Lubricant Lubrication Part to be lubricated Remarks type quantity cycle 1 SGG C Y621 bearing sections with 8 mm Apply both bearings diameter of the paper feed roller Do not apply to roller surface and bearing sections with 10 mm diameter 2 Frame L assembly Item No L bricant L bricant Lubrication Part to be lubricated Remarks type quantity cycle 1 SGG C Y204 gear tooth surface and shaft 2 SGG C Y211 gear tooth surface and shaft 3 SGG Y212 gear tooth surface and shaft 4 SGG C Y213 gear too
41. Wait Timeout 300 POWERPAGE Figure 2 2 Status Report FPS Emulation CHAPTER 3 TROUBLESHOOTING This chapter helps you determine the causes and remedies of problems that might occur Sections 3 1 and 3 2 are troubleshooting diagrams Follow the flowchart steps to remedy the problem Section 3 3 describes the meaning of the various indicator displays on the control panel The indicators help with troubleshooting Section 3 4 describes procedures to reset a counter which is used to estimate the life time of a consumable Section 3 5 describes miscellaneous printer operations Figure 3 1 shows the printer elements and their connections ACIN ere o CNPOW Controller board Heater contact AC switch amp fuse Ore CNHT Main power supply CNHR m Thermistor Back cover open oreo epping Inotor Pick up High voltage power supply VG VD VB VT VH LI L i 4 LI Developing unit LI E 17 1 a Tener sensor cNsimi Memory Memory option CNCG Fonts or emulation fopton CNCSTA CNCSTB main rr i piis upit Eo n Magnets pss Noto Pick up CNCSTAICNCSTE resist Paper feeder D tray 2 option gt Primary power 220 240 VAC Secondary power 24 VDC Secondar
42. alTalk interface boards are available 5 8 yup ddng Jainduro7 1506 Jorg Ponu 8 14 pieog 10529 yun 419415 E 93 3 0A Bi 12013409 PUPA dNUND 527 238 aulauq CNCSTA CNCSTB puc CNOA CNOB 1115615 554 pued 02300 JAW Exe en 5 9 The following are additional block information 1 CPU The Fujitsu MB86936 CPU is a 32 bit architecture RISC processor developed by Fujitsu It uses on chip caching of codes 4K bytes which allows prefetching of blocks of instructions from memory It reduces the number of memory accesses and improves the instruction execution pipeline The controller provides the 20 MHz clock 2 RAM a Resident RAM The resident RAM is 3M bytes The devices consist of six 4M bit DARMs The data width of devices is 8 bits and a 32 bit data width is obtained by using 512K bits x 8 bits type and 256K bits x 16 bits type Since the refresh operation is performed by the dedicated DRAM controller the RISC processor operates independently of the refresh operation b Expansion RAM The controller supports up to 67M bytes including the resident RAM The expansion RAM is supplied on SIMM cards The controller accepts 1M 2M 4M 8M 16M or 32M byte cards The contr
43. aner pad to remove the cleaner pad from the cleaner Slide the cleaner pad to the right and separate it from the cleaner Put the new cleaner pad on the cleaner and slide the cleaner pad into the locked position 4 Install the cleaner in the printer as follows Grasp the handle of the cleaner and put the left end of the cleaner into the opening and then the right end Push down the top of the handle and pull it towards you to lock the cleaner Close the cover 4 9 LEVEL 2 MAINTENANCE Level 2 maintenance includes maintenance such as lubrication and parts replacement Level 1 maintenance should also be performed when level 2 maintenance is performed 4 9 1 Replacement Precautions a Keep assembly areas clean b Turn off the power to the printer and disconnect the power cord and interface cable before disassembly or assembly c Follow the procedures carefully Do not loosen any parts that are not to be disassembled d Store disassembled parts in a clean place where they will not get lost e Check parts for correct numbers and shape after replacement f Reassemble the printer in the reverse order of disassembly Be sure that all connectors are connected correctly g Donotstand the printer as shown below with the control board installed If not so the parallel interface connector may be damaged Front Parallel interface connector 1 Upper cover replacement Removal 1 Op
44. anges to SELF TEST with the DATA indicator flashing and the status report begins printing After printing the printer returns to the original state Status report printing can also be started by PPMENU See the last section in this chapter Pressing the PRINT FONT button instead of the SELF TEST button starts printing the font report that lists all available fonts See Figure 4 6 Note The status and font reports are printed for either the PCL emulation or the FPS emulation according to the emulation used for last printing FPS is selected when the printer is turned on The FPS font report does not include ESC sequences to print fonts h 2 M40 Page rider Ment ik Com fupiration Menu Copies E 5 PS Errors f 3 CHT Speed Paper eller HO Timeout 15 T Moda Manual Feed Moda Ott Jam Recovery Autacani Dalaull Paper Thickness Options BA Menn Password lala Font aching Off Printer CAND Product PS Code varslen 2003 002 Hirnwares Level 2 Manual Feed Tic 2 B Wail Timeout An HAM 5128 11 Head ition 600 dpi E28 A a a a a POWERPAGE Figure 4 5 Status Report FPS Emulation 4 59 3
45. aper path the print unit or transfer corrona unit may be defective End C 9 Black C Is precharger wire dirty Clean precharger wire See page 4 9 precharger Yes electrode apart from high Attach electrode gt voltage electrode See page 4 9 Does LCD display REPLACE Replace print unit PARTS See pages 2 3 and 3 20 to 21 4 supplied Replace high voltage from high voltage power supply See page 4 25 Improved by No replacing controller Replace laser unit board See page 4 18 a 10 White connector of laser unit connected Is transfer corona wire dirty precharger electrode apart from high voltage electrode Does LCD display REPLACE PARTS Is 4 kV supplied No Connect connector See page 4 18 Clean corona wire See page 4 8 Yes Attach electrode Replace print un Unit is at the end of life it See pages 2 3 and 3 20 to 21 from high voltage power Yes Replace print unit Unit is defective Is 24 V supplied to high voltage power Improved by replacing high voltage power Replace main power See page 4 21 Replace la
46. ber of printed pages Maximum 16 777 216 The maximum value returns to zero VALUE 2 Total time of rotation of the print unit s drum This value is 1 5120 of the actual time second Maximum 63 The maximum value remains unchanged 322 560 seconds VALUE 3 Printer name used by PJL command DIGITAL Laser P gt DIGITAL Laser Printer LN15 VALUE 4 Device ID for bi directional Centronics Device ID DIGITAL Laser P MFG DIGITAL CMD NDAP PJL PCL PS MDL Laser Printer LN15 VALUE 5 Serial number of printer 4 63 4 EEPROM CLEAR and EEPROM CLEAR Extension When EEPROM CLEAR is executed the printer settings return to the factory default valves When the EEPROM CLEAR Extension is executed the serial number of the printer is also cleared 5 Re entry of the serial number of printer If EEPROM Clear Extension is executed the serial number of the printer must be re entered To do so turn on the printer the printer displays a message prompting to enter the serial number of the printer Enter it as follows 4 64 Turn on the printer After initialization of the printer the printer displays the following message for a second and Enter Serial No then enters the serial number enter mode where the following message is displayed S M 00000000 indicates the digit where you can change the value Enter the printer serial number of lower 8 digits except the
47. blue and red cables from the lower fan 9 High voltage power supply board and sensor board replacement Removal 1 2 3 4 5 Remove the paper tray Remove side cover R and the shield plate See Item 1 Upper cover replacement Remove the control board See Item 8 Control board replacement Remove four screws from the bottom of the printer to remove Disconnect the connector cable from the power supply and pull out the mechanism board from the control board 6 Remove five screws to remove the sensor board assembly 7 Remove four screws to remove the high voltage power supply board be d High voltage power supply board Installation Reverse the removal procedure Notes 1 When installing the sensor board observe the order of fastening screws 2 When installing the mechanism board take care so that the cable does not overlap the four spring electrodes on the bottom left of the printer mechanism 3 After connecting the connector cable from the power supply board install the mechanism board while matching the four screw positions 10 Main motor replacement Removal 1 Remove the upper cover See Item 1 Upper cover replacement 2 Remove the control board See Item 8 Control board replacement 3 Remove FANI See Item 6 FAN 1 replacement 4 Remove four screws to remove the main motor unit Main motor unit 5 Remove four screws and disconnect the
48. cable to remove the main motor Installation Reverse the removal procedure 11 Pick up motor replacement Removal 1 Remove side cover L See Item 1 Upper cover replacement 2 Remove the subassembly of the sensor board and the high voltage power supply board See Item 9 High voltage power supply board and sensor board replacement 3 Remove two screws to remove the pick up motor 5 Pick up motor Installation Reverse the removal procedure 12 Pick up roller replacement Removal 1 Remove the paper tray 2 Remove side cover L See Item 1 Upper cover replacement 3 Remove the screw from the pick up roller shaft FG plate and remove the FG plate 4 Remove the bearing using a standard screw driver 5 Pull the pick up roller shaft out approximately 50 mm to remove the pick up roller Note Do not pull out the shaft completely FG plate Pick up roller Installation Reverse the removal procedure Note When putting the pick up roller on the shaft face the tapered rib of the roller toward the pick up motor The following shows the relative position of pick up roller and pick up motor viewed from the bottom Pick up motor Tapered rib Pick up roller 13 Resist motor replacement Removal 1 Remove the control board See Item 8 Control board replacement 2 Remove two screws to pull out the resist motor Resist motor
49. ce in buffer and error occurrence The MarkVision and PPMENU utility programs can also indicate these messages on the computer s monitor This section lists these messages into the following three groups Error messages Action required status messages Printer status messages 3 3 1 Error Messages Errors refer to a problem or condition which requires maintenance personnel to take an action The printer shows errors by using the ERROR indicator and the message display of the control panel Table 3 1 lists the error messages explains causes and suggests solutions However a fatal error in the controller or mechanism cannot be cleared by the user Generally other errors can be cleared by the user Table 3 1 Error Messages Message Causes and solutions BD CYCLE ERROR Cause Malfunction in the laser unit Solution If the error recurs consult your dealer for service COMM ERROR Cause Communication error COVER OPEN 1 COVER OPEN 2 COVER OPEN 3 FUSER FAILURE INVALID SIMM JOB TIMEOUT LOAD MFF size or LOAD TRAYn size MANUAL TIMEOUT MEMORY OVER FLOW Solution Press the CONT button and select the correct settings of the serial interface using the control panel setup mode Cause Incomplete closing of upper door Solution Close the upper door Cause Incomplete locking of paper guide inside the rear stacker Solution Lock the paper guide Cause Incomplete closing of duplex unit Solution Close
50. cedures for replacing parts and list of tools Chapter 5 Principles of operation mechanical and electrical operations Chapter 6 Replacement parts CHAPTER 1 GENERAL DESCRIPTION 1 1 INTRODUCTION This manual is for maintenance service engineers The DIGITAL Laser printer LN15 is based on the QMS Desklaser 1400P printer that is manufactured by Fujitsu using the PrintPartner 14ADV printer engine This manual is customized for the DIGITAL Laser Printer LN15 from the PrintPartner 14ADV Service Manual amp Part Catalog It covers maintenance and detailed information such as trouble shooting and component replace ment Information unique to the DIGITAL Laser printer LN15 are documented DIGITAL Laser Printer LN15 Service Manual and Parts Catalog EK LN15X SV There are two companion manuals for PrintPartner 14ADV maintenance service engineers PrintPartner 14ADV Page Printer Parts Catalogue Order No C145 G019 PrintPartner 14ADV Page Printer Schematic Diagrams Order No C145 F038 For the optional duplex unit the following manual is available Duplex Unit Parts Catalogue Order No C145 G020 Most information is covered in this manual The other two manuals are mostly for reference These three manuals contain all the information necessary for LN15 laser printer maintenance The LN15 laser printer is a reliable machine with a simple mechanism that requires little maintenance 1 2 EQUIPMENT CONSTRUCTION 1 2 1 General This se
51. ction outlines the construction and features of the LN15 laser printer 1 2 2 Model Configuration Model and input voltage Printer LNI15P AC 220 240 VAC for Europe 11MB No Network card central Europe power cord LNI5N AC 220 240 VAC for Europe 19MB Ethernet Card 10 BASE 2 BNC Central Europe power cord LNI5N AB 220 240 VAC for Europe 19MB Ethernet Card 10 BASE T Twisted pair Central Europe power cord Options LN15X TA Paper trays tray 1 550 sheets A4 Letter and Legal sizes LN15X TB Paper trays tray 2 500 sheets A4 A5 Letter Legal and Executive sizes 1 15 Paper feeder feeder unit paper tray 2 A4 or Letter size LNI5X DA Duplex unit two sided printing mechanism LNI15X SI Serial interface board RS 232C 422A For LN15P LN15X AT LocalTalk board AppleTalk compatible For LN15P LN15X NA Ethernet board 10 BASE 2 for LN15P LN15X NB Ethernet board 10 BASE T for LN15P LNXXM AE 8MB Memory expansion LNXXM AF 16MB Memory expansion LNXXM AG 32MB Memory expansion LN15X MF Multifunction Feeder paper tray The entry model LN15P printer has 11 MegaBytes of RAM HP LaserJet 4 5 and PostScript level 2 emulations and a Centronics parallel interface bi directional Its paper tray size is A4 for Europe Asia and Australia The network printer models LN15N AC and LN15N BC have 19 MegaBytes HP LaserJet 4 5 and PostScript level 2 emulations and a Ethernet card
52. d replace ment 12 Remove FAN and gears 1 to 6 from the subassembly See 7 FAN2 replacement Remaining is the fuser unit Note Do not disassemble the fuser unit itself Installation Reverse the removal procedure Notes 1 Return gears 1 to 6 to the original positions and hold them by installing the FAN2 mounting plate 2 Fasten FAN2 on the plate so that the air flow arrow is in the outward direction See Item 7 FAN2 replacement Gear 4 gi Gear 6 Gear 1 Gear 2 Gear 3 5 Power supply board replacement Removal 1 Remove side cover R and the shield plate See Item 1 Upper cover replacement 2 Disconnect the connector for FAN2 See Item 4 Fuser unit replacement 3 Remove the subassembly of the fuser unit and the power supply board See Item 4 Fuser unit replacement Turn the subassembly upside down 5 Remove six screws which fasten the cover Disconnect the two connectors for the fuser unit then the connector for the sensor board and remove the power supply board Power supply board Installation Reverse the removal procedure 6 FAN 1 replacement Removal 1 Remove the upper cover See Item 1 Upper cover replacement 2 Disconnect the connector from FANI 3 remove lift it at an angle while pressing the lower mounting plate with a standard screw driver as shown below Installation Reverse the remova
53. e e Re 4 22 Ly FAN 2 replacement a eei dieere 4 23 8 Control board replacement t ere rd 4 24 9 High voltage power supply board and sensor board replacement 4 25 10 Main motor replacemient eterne 4 27 LI Pick up Motor replacement rte eee ERE RU Ue REM do caw 4 28 12 Pick up roller replacement 2 eet ettet tee e Ht Ren 4 29 13 Resist motor replaceMent 4 31 14 Paper feed roller 4 32 15 Transfer charger unit replacement 4 35 16 Cover open switch replacement 0 0 0 0 eee ciias ieissar toetas Senesi sises 4 36 17 Volume board replacement 4 37 18 Stacker full sensor board SFS board 4 38 19 Frame 2 assembly replacement 00 0 0 ce 4 39 20 Multi function feeder board board replacement esee 4 40 21 Separator assembly friction pad holder replacement sese 4 4 22 disassembly 5 tiU 4 42 49 2 Lubrication and ee eerte E RO tei Pre Ite ie ere ent 4 43 I Basetrame assembly eerte eO te e P Ov Re epp rte EC ee ert 4 44 2 BramelL assembly
54. e This plate covers the control board This plate is tightened with screws to the right side of the printer mechanism frame Control board The control board is the main controller of this printer It has four ROMs for firmware mechanism control and interface control It has connectors for the Centronics interface cable and an optional interface board an optional memory expansion cards and an emulation card of the future The resident RAM is 3 MBytes There is 1 x 8 MB SIMMS board on the LNI5P and 2 x 8 MB SIMMS board on LNI5N as standard configuration Figure 1 6 Control Board 9 Sensor board assembly a Sensor boards There are two sensor boards They detect the presence of paper the size of paper paper empty and paper ejection b High voltage power supply board HV board The high voltage power supply which supplies high voltage to the pre charger and the transfer charger unit is tightened with screws to the left side of the sensor board assembly 10 Paper tray The paper size is universal among A4 Letter and Legal The capacity of the paper tray tray 1 is 550 sheets for 0 09 mm thick paper An optional 500 sheet paper feeder tray 2 is provided Its paper size is universal among A4 5 Letter Legal and Executive 11 Multi function feeder Optional The multi function feeder feeds envelopes labels transparencies heavy paper and nonstandard size
55. e back of the printer is the voltage supplied in your area then connect the AC power cord between the printer and the AC power outlet Turn on the power switch Make sure the POWER indicator on the control panel lights printer initialization and warming up occur then the message display indicates READY with the ONLINE indicator lit Print a trial page Press the READY button to put the printer offline Then press the SELF TEST button for more than five seconds to print the status report shown on the next page The status report is printed for either the PCL emulation or the FPS emulation according to the emulation used for last printing FPS is selected when the printer is turned on See the user s manual for details Check the print quality and printer performance gt Status Report CA04040 Page Printer Printing Menu Configuration Menu Copies Personality Auto 10 Timeout 15 Inside ad Bidivection Mode Manual Feed Off NPAP Aulo Autocont Off Default Paper Thickness Options Menu 5 PS Size 11MB Jam Recovery Smoothing _ On PS Errors 600 dpi Banding Mode Auto Auto Duplex Off Printer DIGITAL Laser Printer LN15 Tumble Long Eage Product Name 04040 Option 1 0 Ethernet PS Coda Version 2003 002 Firmware Level ROALAD Job Timeout 0 Manual Feed Timeout 60
56. e of print area of paper Factory use only PARA XX face 9 LEFT ADJUST BACK Adjust left edge of print area of paper Factory use only PARA XX back 10 ENGINE MODE Send engine command and display Factory use only PARA XX return value from mechanism controller 11 ENGINE MAINTE Start maintenance mode Factory use only Note When executing an EEPROM clear mode the PrintPartner 14ADV determines the default paper size depending on the paper tray installed 4 61 4 62 2 How to execute a maintenance mode Press and hold the and buttons while turning the printer on Note Be sure to keep holding the and buttons until the TEST PRINT message appears It takes about one minute depending on warm up time Release the and buttons when the message display shows TEST PRINT after lt lt lt INITIALIZE gt gt gt and WARMING UP TEST PRINT is the first function in maintenance mode and indicates that the printer enters maintenance mode To select another function press the MENU button Each time you press the MENU button the message display shows the next function Note To select EEPROM CLEAR Extension press the or button when EEPROM CLEAR is shown To change a parameter press the or button Some functions involve a parameter which is shown as PARA XX in the bottom line of the message Each time you press the or button the value XX increases or decreases To execute a function press
57. e receive buffer or processes it immediately The IRQ is then set high The CPU may send out certain information such as XON XOFF or ACK from the serial interface output terminal if the selected protocol defines such response operations In certain protocols the CPU may change the status of output signals such as DTR Received Data Printer CD sc oo or os os ses os or e N Printer IRQ CPU RD Printer CD N CPU RTS N Printer CTS N T sc Too m es os or os 5 Note If signal lines CD RTS and CTS are open the printer ignores any controls related to these signals 5 20 Figure 5 12 RS 232C Serial Interface Signal Timing Chart 3 FEIT Fujitsu Enhanced Imaging Technology This technology improves the image quality This technology automatically recognizes and smooths the jagged outlines of text characters and line art drawings In detail the timing and pulse width of the video signal corresponding to print dots is control led FEIT accomplishes this by controlling the size of dots generated by the printer and the dot positions in the main scanning direction This achieves pseudo high resolution printing In addition 300 dpi print data can be printed with this 600 dpi printer engine In this case the circuit for the operation automatically recognizes the jagged outline and improves the image quality Figure 5 13 shows the block diagram SV
58. e subassembly of the sensor board and the high voltage power supply board See Item 9 High voltage power supply board and sensor board replacement Disconnect the connector from the cover open switch 3 Disengage the two claws of the left guide for the print unit and pull the left guide out in an upward direction to remove it 4 Remove the cover open switch Cover open switch Hooks Installation Reverse the removal procedure 17 Volume board replacement Removal 1 Remove the control board See Item 8 Control board replacement 2 Remove the screw to remove the volume board from the bottom of the frame Note Use a short Phillips screwdriver Installation Reverse the removal procedure 18 Stacker full sensor board SFS board replacement Removal 1 Remove the upper cover See Item 1 Upper cover replacement 2 Remove the cable from the stacker full sensor 3 Remove the screw at the rear of the board Installation Reverse the removal procedure 19 Frame 2 assembly replacement Removal 1 Remove the upper cover See Item 1 2 Remove the stacker full sensor board See Item 18 3 From the rear of the printer draw out the paper guide 4 Push outward the two hooks on the bottom of the frame 2 assembly to disengage them from the frame on which the laser unit is also mounted and then lift the frame 2 assembly to remove it Frame 2 assembly eee DELETE
59. ecommended spare parts Product number Section Remarks 1 Upper cover subassembly CA04040 G55 1 4 9 1 1 2 Pick up roller assembly CA02758 G600 4 9 1 12 3 Feed roller assembly CA02758 G612 4 9 14 4 Cover open switch CA02758 G127 4 9 1 16 5 Main motor 02758 0251 4 9 1 10 6 Pick up motor CA02758 0201 4 9 1 11 Same as resist motor 7 Transfer charger unit CA04040 F450 4 9 1 15 8 Fan 1 CA02758 0129 4 9 1 6 9 Fan 2 CA02758 G128 4 9 1 7 10 Power supply board 02951 4260 4 9 1 5 For 120 VAC CA02951 4265 For 220 240 VAC 11 High voltage power supply CA02951 4291 4 9 1 9 board 12 Separator assembly CA04040 G730 4 9 1 21 friction pad 13 Stacker full sensor assembly CA02758 F696 4 9 1 18 SF sensor board 14 Operator panel CA04040 0574 4 9 1 2 control panel 15 Volume board print density CA04040 G572 4 9 1 17 dial 16 Multi function feeder board CA02758 G181 4 9 1 20 MFF board 17 Sensor board CA04040 G595 4 9 1 9 18 Paper sensing switch CA02758 G182 4 9 1 9 PSS board 19 ROM board CA04040 J500 4 9 1 8 control board and ROM 20 Frame 2 assembly CA02758 F680 4 9 19 Note The section column indicates the item number of the procedure to replace the part The following must be replaced at the same time the transfer charger unit is replaced No Parts to be replaced periodically Product number Section Remarks 1 Fuser unit CA04040 C941 CA0404
60. ection and adjustment required for levels 1 and 2 defined in Section 4 4 4 1 GENERAL Using the latest in electronic technology the Laser Printer LN15 offers high reliability and ease of mainte nance The number of parts requiring lubrication and or adjustment has been reduced The LN15 printer has a self diagnostic function which briefly indicates the type of error using the indicators on the control panel if the printer malfunctions This printer has the status report function to help indicate whether an error is due to the printer or the host computer This function is useful for testing printer performance after an error recovery 4 2 GENERAL PRECAUTIONS The following precautions will help prevent damage to the LN15 page printer Do not connect or disconnect connectors or printed circuit boards while the power is turned on Use screwdrivers pliers and other tools appropriate to the parts to be replaced Do not leave screws or parts inside the printer Use only the specified type of oil grease and cleaner Power should be turned off before beginning any parts replacement Becareful not to cause damage to the print unit by touching the surface of the OPC drum with fingers metal or anything Do not set the print unit in light for extended periods of time 4 3 MAINTENANCE TOOLS Table 4 1 lists the tools required for maintenance Table 4 1 Maintenance Tools No Tool Name Q ty Remarks
61. eee output stacker Printer mechanism Seo ee eee Multifunction feeder SIMM Single inline memory module i Option Figure 5 1 Printer Block Diagram The following explanation is divided into the two parts mechanical operation and electrical operation 5 1 5 2 MECHANICAL OPERATION This printer uses three motors to feed the paper and to drive the print unit The pick up motor drives the pick up roller in the printer or in the multi function feeder The rotating direction of the motor determines which roller will be selected The resist motor drives the paper feed roller The main motor drives the print unit the heat roller and the paper eject roller The printer operations are described below Eject roller Fuser unit Heat roller OPC drum Duplex unit Pick up roller multi function feeder Pick up roller Paper feed roller Figure 5 2 Picking Printing Fusing and Ejecting Paper When the printer receives a printing command the main motor starts to rotate to initialize the print unit including photoconductive drum developer cleaning roller and toner agitator and to warm up the heat roller The pick up motor not shown in Figure 5 2 rotates clockwise to pick up paper from the paper tray To print using the multi function feeder the host sends a paper select command When receiving it the pick up motor rotates counterclockwise to drive the pick up roller of the mu
62. eel off the top tape to open the four flaps 2 Take the toner bottle package the power cord package the multi function feeder MFF package and the package of user s manual floppy disks cleaning brush and paper size labels from the carton Then take them from protective bags 3 Remove the two upper cushions and housing then remove the printer out of the carton 4 Take the printer from the protective bag 5 Setthe printer where it is to be installed Upper right Upper left cushion cushion Lower left Multi function Carton l feeder option Binder with installation guide warranty card and CD ROM includ ing user guide drivers amp NI SW size labels Figure 2 1 Shipping Carton and Printer and its Accessories 2 4 INSPECTION AFTER UNPACKING Visually check the printer exterior Then turn power on and check the print quality and printer performance See the user s manual for details of procedures 1 Peel off adhesive tapes from the printer Open the upper door and remove the two restraint cardboards Draw out the paper tray and remove the restraint cardboard and tapes securing the rear paper guide Visually check all parts for damage 2 Set up the print unit and install the toner bottle a Remove the protective materials from the print unit Remove the protective sheet q Gently pull the narrow clear tape w until its blue end is visible and remove it
63. en the upper door 2 Remove three screws 3 Remove one screw to remove the rear cover 4 Remove side cover R and side cover L 5 Remove three screws to remove the shield plate Upper door gt Upper cover CS eo aa dg y Side cover L AT LT il 0 w 9 Volume board connector Disconnect the control panel connector and the volume board connector Control panel connector Front Bottom 14 7 the upper cover in an upward direction to remove it while pressing four claws on the left and right of the upper cover using a standard screw driver as shown below Installation Reverse the removal procedure 2 Control panel replacement Removal 1 Remove the upper cover See Item 1 2 Remove the control panel while pressing the two claws on the left and right of the panel using a standard screw driver Installation Reverse the removal procedure 16 Connectors and Cable Connections of the Control Board Right Side View FAN White FANI Blue Front Bottom Cable Routes of the Pick up Motor and the Cover open Switch Left Side View Bottom 17 3 Laser unit replacement Removal 1 Remove the upper cover See Item 1 2 Disconnect the connector from the laser unit 3 Remove three screws to remove the
64. eter EEPROM CLEAR MECHA CONT 1 MENU 4 Press the ENTER button to execute the function EEPROM CLEAR MECHA CONT 2 MENU i 5 Turn off the power switch to exit the maintenance mode TOP ADJUST TRAY PARA XX MENU TOP ADJUST MANU PARA XX MENU RESIST ADJUST 1 PARA XX MENU Use the or button to change parameter LEFT ADJUST FACE PARA XX MENU LEFT ADJUST BACK PARA XX MENU ENGINE MODE PARA XX MENU 1 ENGINE MAINTE MENU ENTER Power OFF Figure 4 10 Maintenance Mode Operation Flowchart 4 65 CHAPTER 5 DESCRIPTION OF OPERATION 51 GENERAL This chapter explains the principles of operation of the LN15 laser page printer A microprocessor controls all basic functions interface printing and paper feeding Figure 5 1 shows a block diagram of the laser printer LN15 Cover open switch i T 1 Memory Extended 1 1 Computer 1 expansion SIMM interface card connector board 1 IlLl l2cl T top amp middle 2 slots eee J T Memory MarkVision PPMENU Controller omui ics Bi directional T bern ds parallel interface Printer Driver i p reserved for font Computer jo ded 1 or emulation card Manual feed slot Print unit Paper tray tray 1 Face down
65. expanded shrunk data can be read by the CPU Data mirror The mirror circuit mirrors 32 bit data with each bit state inverted Data is set by the CPU and the mirrored data can be read by the CPU Video data The video data is the data that is sent to the FEIT LSI Video transfer DMA The video transfer DMA in the LSI 1 transfers the actual image which is created on the DRAM by firmware from the DRAM to the video buffer in the LSI 1 according to the BD signal FEIT LSI The FEIT LSI receives the image data from the video buffer enhances the image and sends the enhanced image as video data to the laser unit via the engine controller Control panel controller The control panel controller a small LSI on the control panel board controls the control panel LCD LEDs and switches The LSI on the controller board controls the interface to the above LSI Serial data is used as LCD and LED drive signals and switch read signals A separate line is provided for the READY button signal to allow an interrupt to the CPU 6 Print density converter LSI This LSI enables the 600 dpi laser unit to print horizontally 2400 dpi print quality 7 Reset circuit The reset circuit initializes the printer when power is turned on Xxoo q peog 6 6 99 ZX xut xem 9E 3 6 quapsay 515 WNVHG Jeuued s dONO reuzis
66. from paper path 4 Duplex unit Cause A PostScript error Solution If the error recurs consult your dealer for service Cause Paper out in the specified paper source Solution Supply paper Cause Paper stacker full Solution Remove paper from the paper stacker Cause A system error on the controller board Solution If the error recurs consult your dealer for service Cause Paper tray installed incorrectly Solution Install the paper tray Cause Toner runs out Solution Replace toner bottle and cleaner 3 3 2 Status Messages Status messages in this section refer to normal conditions Table 3 2 lists status messages referring to conditions that require the user to take an action It explains causes and suggests solutions Table 3 3 lists printer status messages referring to conditions which generally require no action by the user and explains their meaning These tables do not include messages in menu mode Table 3 2 Action required Status Messages Message Causes and solutions INSERT size Cause Printer is ready for paper Solution Put paper into manual feed slot READY TONER LOW amp PAD Cause Toner runs short Solution Prepare new toner bottle and cleaner READY REPLACE PARTS Cause Print unit is near end Solution Replace print unit Note Enter menu mode and select Clear Warning After replacement be sure to press ENTER to perform Clear Warning Table 3 3 Printe
67. function feeder board MFF board This board has a connector for the multi function feeder Print unit user replaceable The print unit consists of a photoconductive OPC drum unit and a developing unit It lasts about 30 000 pages printed at 5 coverage in continuous print mode at 25 C 77 F and 50 RH It can be changed easily by the user Toner bottle user replaceable The toner bottle contains new toner It lasts for about 5 000 pages printed at 5 coverage in continuous print mode However the toner bottle installed on the new print unit has a shorter life It can be changed easily by the user Cleaner assembly The cleaner assembly consists of a cleaner and a cleaner holder Cleaner user replaceable The cleaner wipes the heat roller It lasts for about 5 000 pages printed at 5 coverage in continuous print mode It must be replaced by the user when the toner bottle is empty and replaced Cleaner holder reusable The cleaner holder holds the cleaner It locks the cleaner by a simple mechanism which can be easily operated by the user 6 Power supply unit This unit consists of the following parts e power supply Power switch AC inlet e Fuser unit Cover Paper guide assembly 1 Paper eject sensor Paper guide Guide open switch Fan FAN 2 Main power supply The main power supply supplies 5 VDC and 24 VDC for the logic devices and printer mechanism There are two types of po
68. g time IRQ is activated by the timer block Then the firmware sets the phase switch data and sets the next time data Thus the motor is fully controlled by the firmware not by the hardware The CPU can control the two sets of motors at the same time The control signals of the video interface lines are connected to the CPU I O If you get more information about this interface see the Video interface specifications But the video data and the synchronize data lines are connected with the LSI The controller has a non volatile RAM X24c02 or equivalent with the capacity of 2K bits The processor communicates with the non volatile RAM via the CPU by serial data One bit is read or written at a time using EEPROM by the I O port and firmware The read write speed is thus slower in comparison with the ROM connected to the bus The controller provides the 10 MHz clock for the CPU However the CPU divides the frequency to 5 MHz for the internal clock 5 17 2 ROM 3 LSI 5 18 The ROM is 8 bit EPROM It contains engine control programs and data tables expander The output ports are provided for controlling the high voltage power supply fan rotation and eraser LD The input ports are provided for receiving signals from sensors stacker full paper presence and paper size of paper trays 1 and 2 multi function feeder status etc Laser unit controller The unit consists of two parts One is the spindle motor the o
69. l roller Be sure rollers are equivalent while rotating it by hand dry before operation Paper path Remove paper dust and fragments 4 Corona wire Remove toner from the tungsten wire and Be careful not to break the chassis using the cleaning tool supplied See wire Figure 4 3 Replace the transfer charger unit if it is very dirty 5 Precharger wire Remove toner from the tungsten wire and Be careful not to break the chassis using the cleaning tool supplied See wire Figure 4 4 Replace the print unit if it is very dirty See Chapter 5 of the User s Manual Im E Figure 4 3 Cleaning the Corona Wire Cleaning tool Figure 4 4 Cleaning the Precharger Wire 4 8 2 Consumables Replacement Consumables of this printer are the toner bottle print unit and cleaner pad The toner bottle and the print unit are easy to replace So this section explains how to replace the cleaner pad only Follow these steps 1 Open the cover as follows Push the engraved portion on the stacker to unlock and open the cover Lift the front of the cover 2 Remove the cleaner as follows Push down the handle of the cleaner and push forward it to unlock the cleaner Slide the cleaner to the left and take its right end f the opening and then the left end 3 Mount a new cleaner pad on the cleaner as follows Push the lock lever to unlock the cle
70. l parts listed until the quantity of the next part appears at the same level See example m n shows an assembly or unit consisting of more than one part These parts are at the same level and belong to the same upper level part Parts with on asterisk are recommended spare parts The Sensor Lever is the part name of the item number 10 Parts with an at can be bought Parts with no marks cannot be bought The Stepping Motor is a recommended spare part 3 2 Upper Cover 2 A 3 2 Upper Cover Index Composition S Specification Parts name E No amp Quantity P Description 0 20 1 CA04040 B500 PP14ADV 120V North America r 1 CA04040 B511 PP14ADV 120V For FCI 1 CA04040 B521 PP14ADV 120V For FCPA 1 CA04040 B531 PP14ADV 120V For Asia 1 CA04040 B550 PP14ADV 220 240V O For Europa 1 CA04040 B555 790140 For Tally EU 1 04040 556 190140 For Tally UK 1 CA04040 B561 PP14ADV 220 240V O For FAL 1 CA04040 B571 PP14ADV 220 240V For Asia f 1 CA04040 B581 PP14ADV 220 240V For Europa Country Kit 1 CA04040 B591 PP14A40V 220 240V Brand 1 CA04040 B596 PP14ADV 220 240V For Europa Drop ship 1 10 1 CA04040 F552 UPPER COVER ASY olo 1 7 1 04040 6551 U COVER SUB ASY 1 1 04040 550 UPPER COVER olo ap 2 1 04040 6562 SHADE COVER ASY olo 3 1 CA02758 Y803 UPPER DOOR olo M 4 1 402758 805 UD GUIDE L o
71. l procedure Note Install FANI so that the labelled air flow arrow is in the upward direction Air flow 7 FAN 2 replacement Removal 1 Remove the subassembly of the fuser unit and the power supply board See Item 4 Fuser unit replacement 2 Remove two screws to remove FAN2 from the side of the subassembly Power supply unit FAN 2 Installation Reverse the removal procedure Note Install the FAN2 so that the labelled air flow arrow is in the outward direction Air flow Marks lt 8 Control board replacement Removal 1 Remove the paper tray 2 Remove side cover R and the shield plate See Item 1 Upper cover replacement 3 Disconnect the following all connectors CNFANI 2 CNERS CNTN OPT CNRMP CNCSTA CNMFF CNPS1 and CNSTKF 4 Remove seven screws and disengage the lower hook to remove the control board Control board Installation Reverse the removal procedure Notes 1 Engage the control board securely with the lower hook and screws 2 There is aconnector on the back side of the control board which connects to the sensor boar connector When installing the control board lift it into place so that the control board connector faces the sensor board connector 3 To CNFANI left side connect the connector with red and black cables from the upper fan To CNFAN2 right side connect the connector with
72. leading alphabets S N 00000000 S N 90000000 que E SW e Use button to change the digit indicated by e Press the ENTER button when the digit is decided moves to right If you press the MENU button instead moves to left S N 90072920 Menu 51 4 Enter SW e Press the READY button after you have entered all digits the printer displays SELECTED for a second and saves the digits to EEPROM as the serial number s n 00070000 Turn power off for a second Note The serial number of the printer is cleared by EEPROM CLEAR Extension To reset the menu settings to the factory defaults use normal EEPROM CLEAR after entering the serial number Turn power ON while 1 Turn on the power switch while pressing and holding down olding and buttons ON the and buttons until the message display indicates ps Message display TEST PRINT It takes about one minute but depends on warming up time lt lt lt INITIALIZE gt gt gt WARMING UP TEST PRINT is the first function and means that the printer enters the maintenance mode 2 Press the MENU button to select a function TESPERINT Press the button to select EEPROM CLEAR Extension MENU as shown in flowchart EEPROM CLEAR wires EEPROM CLEAR gt Extension MENU 3 Press the or button to change the param
73. lo 8 5 2 CA02758 Y806 UD GUIDE olo 6 1 CA02758 Y807 UG GUIDE LL olo 2 1 C404040 6G539 DCH FRAME ASY 1 8 1 04040 0574 OP PANEL olo iy 9 1 CA04040 Y564 OP CABLE 10 1 CA04040 Y573 VOLUME CABLE 11 3 F6 SBD3 06121 BINDING HEAD SCREW 1 CA04040 K500 ACCESSORIES North America 1 CA04040 K511 ACCESSORIES For FCI 1 CA04040 K531 ACCESSORIES For Asia 1 CA04040 K550 ACCESSORIES For Europa 1 CA04040 K555 ACCESSORIES For 1 K556 ACCESSORIES For Tally UK 1 CA04040 K561 ACCESSORIES Q For FAL 3 1 CA04040 K571 ACCESSORIES O For Asia id 1 404040 581 ACCESSORIES For Europa e Country Kit 1 CA04040 K591 ACCESSORIES O No Brand 1 04040 596 ACCESSORIES For Europa Drop ship 12 1 CA02758 G461 CL BRUSH ASY olo 13 l C145 E172 EN USER S MANUAL olo 14 1 04040 0905 olo 1 CA04040 0906 Win3 1 DRIVER olo 1 04040 909 MARKVISION olo 15 1 CA02417 Y720 SIZE LABEL 4 1 4 02417 724 SIZE LABEL O LETTER 1 CA02417 Y725 SIZE LABEL EXECUTIVE r 16 1 CA02758 0992 AC CORD SET 100 1204 1 CA02758 0993 AC CORD SET 220 240V EU E 1 CA02758 0995 AC CORD SET O 220 240V 1 CA02758 0998 AC CORD SET O 220 240V UK 17 1 CA02758 0880 MFF olo L 3 3 3 3 Printer 4 he xa 3 3 Printer Composition m 1
74. ls All parts are tightened with screws or snap fitted to this frame The fan FAN1 is installed on this frame Process drive mechanism This mechanism consists of the mechanism that drives the print unit and fuser unit a DC motor and drive system gears etc Paper pick up mechanism This mechanism feeds paper loaded in the paper tray to the base frame of the printer mechanism sheet by sheet This mechanism consists of a stepping motor and drive system gears etc Base frame This frame is main part of the mechanism that transports paper and transfers toner to the paper e Sensor that detects the picked paper e Transfer charger unit service technicians replaceable e Paper feed mechanism A stepping motor resist roller paper feed roller and pick up roller are tightened with screws or snap fitted to this frame 4 5 Paper guide assembly 2 This guide transports printed paper to the output stacker This guide is snap fitted to the frame on which the paper eject roller is installed The stacker full sensor is installed on this assembly Print unit guide This guide is used to install the print unit in the printer The cover open switch that detects opening and closing of the upper door is installed on the left guide This guide is snap fitted to the frame Volume board The volume board has a variable resistor to control the print density The control dial is accessible when the upper door is open Multi
75. lti function feeder The pick up motor and the main motor continue to rotate the paper feed roller the print unit the heat roller and the eject roller until the paper passes through When the mechanism controller detects the bottom edge of the paper by the paper eject sensor it stops both motors The printer then waits for the next command Detailed Description 1 Paper feed drive mechanism Figure 5 3 details the paper feed drive unit The stepping motor and the gear train are mounted on the metal frame e The power of the pick up motor gear is distributed to the pick up roller of the paper tray or that of the multi function feeder Selection is determined by the rotating direction of the motor e The power of the resist motor gear is distributed to the paper feed roller Operation 1 When the pick up motor rotates counterclockwise the power is transmitted to the pick up roller of the paper tray through the center gear of the epicyclic gear train 2 When the pick up motor rotates clockwise the power is transmitted to the pick up roller of the multi function feeder through the circumferance gear of the epicyclic gear train 3 When the resist motor rotates counterclockwise the power is transmitted to the paper feed roller Epicyclic gear train Paper eject roller Paper feed roller Resist motor Figure 5 3 Structure of the Paper Feed Drive Unit 5 3 2 For pa
76. nctions for Maintenance 4 67 Maintenance modes dates ene dct ei 4 67 2 How to execute a maintenance retener 4 68 3 Information printed in test print mode 4 69 4 EEPROM CLEAR and EEPROM CLEAR Extension 4 70 5 Re entry of the serial number of sess nen 4 70 CHAPTER 5 DESCRIPTION OF OPERATION rene en nennen 5 1 3 GENERA ett seen OS Deed em ede e o eed 5 1 3 2 MECHANICAL OPERATION e tee cues Aust d eite tette neve adie riu o oe etudes 5 2 2 9 CEEECTRIC AI OPERATION iio e Pete 5 6 531 System Diagram ioci ete te EO EH tre 5 6 5 32 Controller NERO eB RIP PO DS 5 8 I1 ise RI UU nq 5 10 2 5 10 3 tentur bangin b e ODE p e 5 10 4 Expansion interface 5 11 5 LST Bib neh 5 11 6 Printdensity converter LSI eS 5 13 o is OTt ien ba
77. nd by firmware Auto stand by mode When printing does not occur for one minute the heat roller temperature is reduced to 100 C normal operating temperature 170 C When the printer receives a printing command this auto stand by control is canceled and the printing can start when the temperature reaches 170 C Auto sleep mode When printing does not occur for nine minute in auto stand by mode temperature control is stopped and the heat roller is powered off When the printer receives a printing command this auto sleep mode is canceled and the printing can start when the temperature reaches 170 C Alarm detect The controller can detect dangerous conditions in the printer engine If the controller detects this condition it indicates an alarm and shuts down the power supply without firmware control Heat roller temperature The controller senses the temperature of the heat roller If the temperature exceeds 195 C the controller activates an alarm Disconnected connector The controller senses disconnected connectors Actually the connectors sensed are CNHT CNPOW and CNMC If these connectors are disconnected the controller forcibly turns power off Motor current alarm The controller senses the current flowing through the pick up motor and the resist motor If the main motor draws excessive current the controller activates an alarm immediately If the pick up motor draws exces sive current the contr
78. nnen entren nennen 4 59 Figure 4 6 Front Report FPS 4 60 Figure 4 7 MarkVision Main Screen Initial 4 62 Figure 4 8 MarkVision Status Screen Cover 4 63 Figure 4 9 PPMENU Main Menu 4 64 Figure 4 10 Maintenance Mode Operation Flowchart 4 71 Figure 5 1 Printer Block Diagram 5 1 Figure 5 2 Picking Printing Fusing and Ejecting rennen eene nre 5 2 Figure 5 3 Structure of the Paper Feed Drive Unit essent rennen 5 3 Figure 5 4 Process Drive Unit isti bec err te e B e tee 5 4 Figure 5 5 Print Unit nete NR bee uen e Utente 5 5 Figure 5 6 System i ee t et ied esters iere rte De ete eee tese Pee 5 6 Figure 5 7 Connection Diagram oiim t e e D RO RE RE 5 7 Figure 5 8 Main Controller Block 5 0 Figure 5 9 Control Board Block Diagram 5 14 Figure 5 10 Engine Controller Block Diagram 5 16 Figure 5 11 Centronics Parallel Interface Signal Timing Chart esee 5 19 Figure 5 12 RS 232C Serial Interface Signal Timing Chart 5 20 Figure 5 13 Block Diagram Internal Configuration esses eene ener netten 5 21 Figure 5 14 Prnt Process Block Diagram eae dere
79. not necessarily indicate the actual life The print quality may remain satisfactory to users for some time after this warning appears READY REPLACE PARTS When the warning message is displayed press the READY button to put the printer offline and press the MENU button to enter menu mode The Warning message appears indicating the expired unit by an asterisk When the print unit is expired the message is lt CLEAR WARNING gt PRINT UNIT When the print unit is replaced be sure to reset the counter according to Section 3 4 3 4 RESETTING THE PRINT UNIT FUSER UNIT COUNTER Perform this operation whenever the print unit is replaced to reset the print unit counter follow these steps 1 Make sure the printer is offline If necessary press the POWER ONLINE DATA ERROR ca ca READY button to put the printer offline The ONLINE indicator is off with the REPLACE PARTS message displayed READY REPLACE PARTS 2 Press the MENU button to put the printer in menu mode The message changes to SETUP MENU PAGE FORMAT POWER ONLINE DATA ERROR Ca MENU SETUP MENU PAGE FORMAT MENU 3 Press the MENU button repeatedly until the lower message changes to CLEAR WARNING POWER ONLINE DATA ERROR um ca SETUP MENU CLEAR WARNING POWER ONLINE DATA ERROR um Cc lt CLEAR WARNING gt PRINT UNIT POWER ONLINE DATA
80. o e be bas 5 13 5 33 Engine Controller Block Diagram essere ener nennen nennen nennen trennen nennen 5 15 1 CPU uiii Ie nid arie Rr RD ORE ER UR IRE 5 17 2 ROM i tee Repeated uh Ure edere es 5 18 3 edendo pepe 5 18 534 Interface Communication 4 5 19 1 Gentronics parallel interface e eet e tete REOR NO Ore 5 19 2 RS 232C interface eere th reete nene th 5 20 3 FEIT Fujitsu Enhanced Imaging Technology eene 5 21 23 335 Printing i iet metet ae tabac ei eive dete 5 22 D Print control process aire eR PE ERES NEMUS 5 22 2 generate teeth om eee ed etenim epe ete edente 5 22 3 Madeo dataitransfer anon Sea IE 5 23 5 23 5 Heatroller temperature 5 23 6 Power saving control esee rte ttes teer nae venera eee eerte oeste 5 24 7 Alarm detect eoe mts abcd An atas 5 24 2 96 Control Panel Contr looses idco eret Pepe uh e pc Bets eene etse 5 25 5 3 7 Power Supply uie en e ent e REO DE d RR Re 5 26 1 Qvercurrent protection epe Dt pete sas eee epe bep Pese ere e ne eR 5 26 2 Overvoltage protection 2o REID sane IIR re PUER 5 26 3
81. olds data The CPU reads the received data from the FIFO memory If the CPU is busy and cannot read the received data the FIFO memory can store up to 512 bytes of data When 512 bytes are stored the memory full flag is turned on as an interrupt signal to the CPU DSTB DATAI to DATAS BUSY pM ACK V DATA to FIFO memory Figure 5 11 Centronics Parallel Interface Signal Timing Chart The main controller has another method of interface communication If the host computer requires the printer to use this special communication the controller receives data without using the FIFO memory The received data through DATAS is latched to the internal LSI at the falling edge of the DSTB signal and the BUSY signal is turned on At the same timing the interrupt signal is turned on to the controller CPU Then the BUSY signal is turned off and the ACK signal is sent This process is repeated for each byte received by the printer 2 RS 232C interface option The serial data sent to the input terminal of the interface circuit is converted to TTL level by the receiver IC and is applied to the UART PC16550D LSI The PC16550D converts the serial data to parallel data and activates the IRQ signal The LSI controls the baud rate clock some interface signals and interrupt The main controller CPU recognizes that data has been received and determines what to do Based on its decision the CPU saves the information in th
82. oller also activates an alarm immediately When the optional paper feeder second paper tray or duplex unit is installed the controller senses the current flowing through the second paper tray s motor or the duplex unit s motor If the motor draws excessive current the controller also activates an alarm immediately These alarms cause the power supply to be shut down without firmware control 5 3 6 Control Panel Control The control panel has a push button switch and four LED indicators The switch and indicators are connected to the controller board Except for the POWER indicator the switch and indicators are directly controlled by the controller board The POWER indicator is directly connected to the 5 VDC line The print density dial is fastened to a variable resistor which is connected to the laser unit via the controller board The controller senses the potential of the variable resistor with an A D converter Figure 5 16 is a block diagram of the control panel circuit 5V SG1 Not used BUZZER 25 Kj R POWER sG LED 5V ERROR ER R DATA LED ONLINE LCD 1 LCD 2 LCD SG Display signals OUT SHIFT EN LOAD 151 1512 RST TEST SDIN FORM FEED MENU 25 CONT MUR TRAY SELECT Switch signals ENTER R oo i Button EN
83. oller has two connectors for expansion RAM 3 ROM The ROM subsystem consists of the resident ROM and an optional ROM card The program ROM is 4M bytes The devices typically consist of four 8M bit flash ROMs The font ROM is 6M bytes The devices consist of two 16M bit Mask ROMs 8M x 2 mask ROMs The ROM card is used for adding an alternate emulation The controller has one connector for the ROM card 4 5 Expansion interface Several interface expansion boards are available such as the serial interface board The controller has one connector for an expansion interface The interface controller communicates with the CPU through the expansion board LSI 1 Host interface The printer has the Centronics parallel interface as the standard configuration Its connector is located at the back of the printer The RS 232C 422A serial interface is one of the optional interfaces Its connector is located at the back of the printer e Parallel interface The parallel interface is an industry standard Centronics This interface controlled by the processor LSI 1 and some drivers receivers A host computer sets data and sends the STROBE pulse When the LSI 1 receives the data it auto matically turns on the BUSY signal and stores the data in FIFO memory After storing the data the LSI 1 sends the ACK signal and turns off the BUSY signal The controller has two types of data storing and signal returning systems Normally the
84. oller to the power supply to forcibly turn power off if the printer detects an alarm condition in the mechanism This power stop condition is active unless the power switch is turned off It also active for about one minute after the power switch is turned off or the power cord is disconnected AC TEN Inlet conzector SW r Inrush AVE Ac m Thermistor Rectifire input i section ee ves 72 Filter em ER FUSER ACOUT UNIT ON OFF Constant Voltage Switching Control section 2 9 section Do 5 ae PCi __ 4 245 5 feed STEP DOWN Rectifier i back Regulator ie Smoothing Smoothing 1 1 oc 2 Paper out xd i sensor i Over current Over voltage 5o detection protect circuit Emergency MM stop signal Qver voltage 4 detection jo i i Output filter ulput filter r n ee 24 HION POLT PNSTOP scl tay 5 244 24V3 ou O10 26 7 2500 243 50 Jutprt connector CNPOW Figure 5 17 Power Supply Block Diagram 5 27 No R
85. per feeding by the optional duplex unit the following functions are performed e Switching single double sided printing e Switching face up face down ejection e Reversing paper for second printing Centering paper for second printing e Keeping paper waiting in the unit to time second printing Process Drive Mechanism Figure 5 4 shows the process drive unit The DC motor and the gear train are mounted on the metal plate The power of the main motor is distributed to the print unit the heat roller and the paper eject roller The power of the motor is transmitted to the print unit through gears A B C and D and to the heat roller through gears A B C E and F Main motor Print unit OPC drum Gear E Figure 5 4 Process Drive Unit 3 4 5 Fuser Unit The fuser unit consists of the heat roller unit and the back up roller fuser pressure roller The heat roller unit has a halogen lamp a heat roller a temperature sensor a thermal fuse and supporting parts The back up roller rotates with the heat roller See Figure 5 4 Paper Ejection Unit The paper ejection unit which consists of the paper guide and the eject roller is secured to the frame Eject gears receive power from the heat roller gear See Figures 5 2 and 5 4 Print Unit The print unit consists of a photoconductive drum OPC drum a pre charger unit a developer unit a recycle screw and a toner agitator Gear A recei
86. r Status Messages Message Meaning FORM FEED The printer displays this message when you press FORM FEED with the DATA indicator off The printer is printing data remaining in buffer lt lt lt INITIALIZE gt gt gt The printer is initializing This message appears whenever you turn on the printer MENU RESET The printer displays this message when you press MENU for five or more seconds This reset returns parameter settings in the menu to their factory defaults except for interface settings as well as clears error latches buffered data and temporary soft fonts PRINT FONT The printer displays this message when you press PRINT FONT for five or more seconds The printer is printing the font report READY The printer is ready to print RESET The printer displays this message when you press RESET for five or more seconds This reset clears error latches buffered data and temporary soft fonts SELF TEST The printer displays this message when you press SELF TEST for five or more seconds The printer is printing the status report WARMING UP The printer is warming up to its operating temperature Warning Messages This printer counts the number of the printed sheets to estimate the life of the consumables print unit The printer displays the following warning message when and after the count reaches a predetermined value Note that this value does
87. s drive mechanism Main motor Gears Paper pick up mechanism Pick up motor Base frame Paper sensor Paper feed mechanism Resist motor Resist roller Paper feed roller Pick up roller Transfer charger unit Paper guide assembly 2 Paper eject roller Stack full sensor Print unit guide Cover open switch Volume board Print density dial MFF board Printer optional duplex unit optional paper feeder Print unit Laser unit Cleaner assembly T bottl LR aor OPC drum Heat roller Upper cover fuser unit assembly Resist roller Eject roller Paper feed roller Multi Function feeder Option Pick up roller Paper tray 1 Duplex unit option Paper feeder feeder unit paper tray Pap ey 2 option option Transfer charger unit Figure 1 2 Structure 1 Covers The covers consist of the following e Upper cover assembly e Side cover L Side cover R e Front frame e Front cover e Back cover e Stacker Upper cover assembly The upper cover assembly covers the top of the printer mechanism and stacks printed paper The upper cover assembly has a hinge to enable the front upper door to open The print unit and toner bottle can be replaced when the upper door is open The upper cover has a hinge to enable the shade cover to open The cleaner can be replaced when the shade cover is open The control panel is located at the top right and the ozone filter is inserted at the right rear I
88. ser unit See page 4 18 Y See pages 2 3 and 3 20 to 21 11 Blur C Start Is transfer corona wire dirty No Does LCD display REPLACE PARTS No Replace print unit Unit is defective Yes Clean corona wire See page 4 8 Yes Replace print unit Unit is at the end of life See pages 2 3 and 3 20 to 21 See pages 2 3 and 3 20 to 21 C End 12 Smudge C Is density dial proper Adjust density dial See page 4 5 Is precharger wire dirty Clean precharger wire See page 4 9 transfer corona Clean transfer corona wire wire dirty See page 4 8 Is cleaner dirty Replace cleaner Does See page 4 9 LCD display REPLACE PARTS Replace print unit Unit is at the end of life Replace print unit Unit is defective See pages 2 3 See pages 2 3 and 3 20 to 21 lt 3 20 to 21 Cm 3 3 ERROR AND STATUS MESSAGES This printer displays error and status messages on the LCD of the control panel 16 characters by 2 lines of messages indicate information on errors and statuses in detail for maintenance personnel The printer has also four indicators to display basic statuses power on online data presen
89. t ER enter EH RH teet 5 22 Figure 5 15 Video Data Transfer Block Diagram 5 23 Figure 5 16 Control Panel Block 5 25 Figure 5 17 Power Supply Block Diagram 5 27 Table 3 1 3 17 Table 3 2 Action required Status 3 18 Table 3 3 Printer Status Messages 2 1 0 nenne enne eren nennen nenne 3 19 4 LOIS irt tiene t Re i NP e e a beds 4 2 Table 4 2 Parts That Must Not be Disassembled 2 220 42 4 11000 4 6 Table4 3 Cleanmg eee eh Gh pe e D ep 4 7 Table 4 4 PPMENU Factory Defaults When Emulation is PCL 4 66 T ble 4 5 Special Mamtenance Modes i Hte eee te HO ER EE 4 67 PREFACE This manual is for maintenance engineers and discusses the operation installation and maintenance of the DIGITAL Laser Printer LN15 The topics covered are Chapter 1 Printer specifications performance and configuration Chapter 2 Installation precautions and unpacking Chapter 3 Diagnosing mechanical and electronic problems Chapter 4 Maintenance procedures cleaning lubrication inspection adjustment pro
90. t consists of four LED indicators an LCD and eight push button switches enabling communication between the user and printer Side cover L This cover covers the left side of the printer mechanism Side cover R This cover covers the right side of the printer mechanism This cover is opened to add or replace optional cards RAM card or emulation card Front frame This frame is secured to the front of the printer mechanism Front cover This cover is opened when paper is fed manually or the multi function feeder is used Back cover This cover covers the rear of the printer mechanism Rear stacker The rear stacker can be opened or closed to select the output destination of printed paper The rear stacker is usually closed to eject paper to the upper cover side When envelopes labels or transparencies are used the rear stacker must be opened to eject paper to the rear and stack it Also when a paper jam occurs the rear stacker is opened to remove the jammed paper 2 Laser unit The laser unit is provided in the upper cover Images are written on the photoconductive drum of the print unit by laser beams emitted from the laser unit Caution label Figure 1 3 Laser Unit A CAUTION Do not look at a laser beam directly This label is put on the laser unit 3 Printer mechanism Figure 1 4 Printer Mechanism Metal frame This frame is the basic frame of the printer mechanism and made of sheet meta
91. ta to the LD unit synchro nized with the BD signal The BD signal detects that the laser beam is start position and the video data transfer is requested The BD signal prepares the synchronization signal every raster from the LD unit RAM Bit map memory Controller Part of LSI density Video converter LSI timing Figure 5 15 Video Data Transfer Block Diagram LD unit The LD unit laser diode unit consists of the spindle motor control and the laser power control Heat roller temperature control The temperature of the heat roller is sensed by a thermistor The controller senses the potential with an A D converter Whenever the temperature of the heat roller is higher than 170 C printing can occur After the heat roller has been powered on for 115 seconds the heat roller alarm is detected if the temperature is lower than 170 C A high temperature check is made if the temperature exceeds 200 C The controller board also has hardware protection If the temperature signal detects an abnormal condition more than 4 95 V the power supply unit is shutdown by the protection circuit 5 23 5 24 6 Power saving control 7 The laser printer LN15 saves power which is used for the heat roller in the fuser unit It is done by stopping temperature control or reducing the temperature This control is canceled when the printer receives print data from the host or issues the release comma
92. th surface and shaft 5 SGG Y214 gear tooth surface and shaft 6 SGG C Y215 gear tooth surface and shaft 4 45 Fuser unit 3 Remarks Part to be lubricated Y651 gear tooth surface and shaft Y662 gear tooth surface and shaft Y663 gear tooth surface and shaft Y664 gear tooth surface and shaft shaft Y665 gear tooth surface and Y692 gear tooth surface and shaft Lubrication cycle 7552 lt Lubricant quantity M EE Lubricant type SGG SGG SGG SGG SGG SGG Item No 4 46 4 Main motor unit F251 1 56 0 gear circumference SCALE 1 2 All gear circumference All gear circumference Item No Lubricant Lubricant Lubrication Part to be lubricated Remarks type quantity cycle 1 SG Gear tooth surface and shaft 2 4 47 4 48 5 Frame 2 assembly 9 SGC C O 7692 2 56CsC 0 Y585 lem Y684 Item No Lubricant Lubricant Lubrication Part to be lubricated Remarks type quantity cycle 1 SGG C Y684 gear tooth surface and shaft 2 SGG Y685 gear tooth surface and shaft 3 SGG Y692 gear tooth surface and shaft 6 Guide assembly Item No Pobmeant Lubrication Part to be lubricated Remarks type quantit
93. ther bearing then the hole of a new gear until the gear is caught by the hook c Insert the bearings into guide grooves on the base frame with the bearing phase shift levers set upwards Then turn the bearing levers to the initial state positions to secure the bearings to the base frame 2 Adhere new guide sheets on the base frame longer one to the left area and shorter one to the right area Make sure that there is no clearance between the adhesive tape and the positioning edge as shown on the next page Guide sheets Guide sheets Rear 1 11 Lin HHH 4 Positioning edges Front 118 P Positioning edge 34 15 Transfer charger unit replacement Removal 1 Open the upper door 2 Remove the transfer charger unit holding block at the left side of the transfer charger unit using a screw driver 3 Open the claw on the left side of the base frame then lift the left side of the transfer charger unit using a screw driver to pull out the transfer charger unit toward the left side Note Be careful not to break the wire Transfer charger unit Installation Reverse the removal procedure Note The inside is hot immediately after printing 16 Cover open switch replacement Removal 1 Remove th
94. ther is the laser control Spindle motor The spindle motor is a DC motor So the control is very simple there are only two control lines spindle start stop and alarm detect The motor speed control is in the laser unit Laser control First the firmware turns on the laser unit If the laser unit outputs the BD L indicating the start of the print area the LSI turned on the laser beam If the laser beam is at the end of the print area the LSI turns off the laser beam The LSI controls this sequence automatically The power to the laser diode is controlled by the laser unit but the density is user adjustable with a density control dial located on the control panel 5 3 4 Interface Communication Method This section describes the operation of the interface control 1 Centronics parallel interface The received data DATA1 through DATAS is stored to the internal FIFO memory of the LSI just after the falling edge of the DSTB Data Strobe signal At the same timing the BUSY signal is turned on A little later the ACK Acknowledge signal is sent to the host computer and the BUSY signal is turned off If the host computer has more data to be sent it sends through DATAS with DSTB then the controller repeats the above operations When the received data is stored to the FIFO memory the memory control circuit changes the memory empty flag The controller CPU reads this flag and understands that the FIFO memory h
95. to 21 5 Lacking space at the top and bottom Within 5 mm from the edge of paper Move printing to area beyond 5 mm See pages 2 3 and 3 20 to 21 Is paper damp and waved Does Change to new paper See page 2 5 LCD display REPLACE Replace print unit Unit is at the end of life PARTS No Unit is defective and 3 20 See pages 2 3 and 3 20 to 21 Replace print unit See pages 2 3 to 21 6 Black point white point a Is precharger wire dirty transfer corona wire dirty No Appeared synchronously Every about 94 mm Every about 78 5 mm Does LCD display REPLACE PARTS No Clean precharger wire See page 4 9 Clean transfer corona wire See page 4 8 Replace print unit See pages 2 3 and 3 20 to 21 Replace print unit See pages 2 3 and 3 20 to 21 Is cleaner dirty No Improved by cleaning heat roller Replace print unit Unit is defective Replace print unit Unit is at the end of life See pages 2 3 and 3 20 to 21 Replace cleaner gt No See page 4 9 Replace heat roller Y See page 4 19 7 Second printing ghost printing
96. ves power from the process drive unit transmitting the power to the photoconductive drum gear the magnet roll gear B the toner agitator gear C the recycle screw and gear D Right side view Gear D Left side view Figure 5 5 Print Unit 5 5 5 3 ELECTRICAL OPERATION This section provides a brief description of various circuits and how they operate 5 3 1 System Diagram Figure 5 6 is a diagram of the system The Fujitsu MB86936 CPU SPARC Lite controls the entire printer and the data received from the interface Figure 5 7 is a diagram of the connections Printer controller Host eames Main Engine controller controller Printing Mechanism Control panel amp Density dial Sensor board Power supply High voltage power unit Figure 5 6 System Diagram 4 m ee ap Heater contact AC switch amp fuse l gt a CNHT lt i a L Print density Vanable resistor 4 P t OFT CNERS CNTN INF Controller board CNFAN2 CNSIMI CNSIM2 ___Memory option DC CNLNA CNCG motor 1 Wa Gaia H main CNMFF1 CNCA CNCB MFF Duplex unt sensors Stepping 2 2608 Pss moter CNOA CNOB Magnets T Paper size Pick up CNCSTA CNCSTB sensors resist Paper feeder tray 1 tray 2 option Primary power
97. wer supplies one for input voltage of 120 VAC not used on LN15 and the other for 220 to 240 VAC The main power supply is equipped with a power switch and an AC inlet The main power supply is attached with screws to the cover of the fuser unit Figure 1 5 Power Supply Unit Fuser unit service technicians replaceable The fuser unit has an aluminium heat roller and a pressure roller It fixes the image of toner particles on the paper using heat and pressure It has a temperature sensor and a thermal fuse for safety It lasts about for 100 000 pages printed at 5 coverage on A4 paper in continuous print mode There are two types one for input voltage of 120 VAC Not used on LN15 and the other for 220 to 240 VAC 7 8 Cover This cover classified as a component belonging under the fuser unit category covers the main power supply It is attached on the bottom of the fuser unit and the power supply is installed under inside the cover The paper guide assembly 1 is also installed at the edge of the cover Paper guide assembly 1 This assembly transports paper from the fuser unit to the eject roller When a paper jam occurs the paper guide assembly can be drawn out to remove the jammed paper A guide open switch detects normal installation of the paper guide assembly Fan FAN 2 This fan ventilates the power supply unit This fan is tightened with screws to the right side of the power supply unit Shield plat
98. wo places Part to be lubricated Y322 bore Lubrication cycle Lubricant quantity Lubricant type MG Item No 4 55 12 Heat roller subunit Y538 Lubricant Lubricant Lubrication Item No Part to be lubricated Remarks type quantity cycle 1 SGG C Y538 gear tooth surface 2 MG2 Y538 gear shaft 4 56 13 Heat roller base unit G530 Item No Lubricant Lubricant Lubrication Part to be lubricated Remarks type quantity cycle 1 SGG C G530 bearing both sides Do not apply to the rubber roller 4 57 4 10 DIAGNOSTICS 4 10 1 Printing the Status Report This function prints a page that summarizes printer option settings and lists samples of resident fonts The option settings include information on interface parameters available emulations characteristics of the selected font and firmware and font versions See Figure 4 5 The status report includes a warning message when some of consumables reach their end of life The status report printing can be used in place of the test print mode see Section 4 10 4 The method of operation and sample of results are shown below Operation 1 sure that the message display indicates READY with the ONLINE and DATA indicators off 2 Press the SELF TEST button for five or more seconds The message ch
99. y cycle 1 SGG C Y692 gear tooth surface 2 SGG Y692 shaft 4 49 7 2 assembly Item No Lubricant type Lubricant quantity Lubrication cycle Part to be lubricated Remarks SGG C Bearing and edge of CA02758 Y682 4 50 8 Gear box assembly Item No Pubreant Duoncant Part to be lubricated Remarks type quantity cycle 1 SG Gear tooth surface and shaft 2 4 51 9 Gear box lever assembly 1 SGG C O vo m Item No Lubricant type Lubricant quantity Lubrication cycle Part to be lubricated Remarks SGG C Y272 gear shaft 4 52 10 Developing unit F300 1336 Y310 X311 7807 12 5 SGG C 0 Tem No Lubricant Lubricant Lubrication Part to be lubricated Remarks type quantity cycle 1 SSG C Gear bore Y336 2 SSG C Gear bore Y310 3 SSG Gear bore 7311 4 SSG Gear bore Y312 5 SGG Gear bore 307 4 53 G303 2 Point Item No Lubricant Lubneant Lubrication Part to be lubricated Remarks type quantity cycle 6 SSG C Bearing slide 7308 Two places 4 54 11 Magnet roller bracket assembly 7322 6320 X27 Remarks T
100. y signal 5 VDC Figure 3 1 Printer Elements and Connections 3 1 WHEN THE POWER INDICATOR DOES NOT LIGHT Is the POWER lamp on for a while after power on Is the condition still the same when the motor connector is disconnected Yes Defective power mechanism or controller board Connect connector Is connector disconnected See page 4 21 or 24 No and other pages of Section 4 9 1 Yes Defective mechanism or gt controller board motor activation sound generated See page 4 24 and other pages of Section 4 9 1 Defective power Defecti t See page 4 21 controller board SD page 4 27 24 25 or 15 sensor board or controller board or 24 control panel Com 3 2 WHEN PRINTING QUALITY IS ABNORMAL 1 Faint 2 Deep 3 Clear or blurred black vertical line BRE 4 White vertical line 5 Lacking space atthe 6 Black point white 7 Second printing top and bottom point Ghost printing 1 gt T T 8 Dirty back edge 9 Black 10 White 11 Blur Transfer charger unit faulty P Print unit faulty F Fuser unit expired Figure 3 2 Abnormal Print Quality 1 When faint C Start Is density dial proper Does LCD display TONER EMPTY transfer corona wire dirty Does LCD display REPLACE PARTS

DIGITAL Laser Printer LN15 Service Manual & Parts Catalog

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DIGITAL Laser Printer LN15 Service Manual &amp; Parts Catalog

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DIGITAL Laser Printer LN15 Service Manual & Parts Catalog