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Service Manual: HS2P series (G407/G408/G410/G411), IS450S

1. eese 5 3 52 AD AND UPPER SIDE ak vee ee te as ee EG Eit be ee ee be coe in fe 5 4 5 2 1 DOCUMENT SENSOR currar 5 4 5 2 2 SEPARATION DINI imac ttf ate an read 5 4 5 2 3 DOCUMENT TABLE ASSEMBLY eene 5 5 5 24 EL IS o DT D Aa ene A eich 5 5 5 2 5 SCANNING GUIDE PLATE sat esse drid 5 6 5 2 6 FEED SENSOR oce teet Ee oe a ee ke Ge ge bees 5 6 5 2 7 READ SENSOR sesse es se ed ee ee ke ee ee ee ie ee ee Ge a 5 7 5 2 8 FEED OU SENSO Asael 5 7 5 2 9 PAPER TRANSPORT BRUM aetate otn trata setae 5 8 5 3 ADF AND BRIGHT SIDE sara n Pera ted ona n eat ena a 5 9 5 3 1 PAPER FEED MOTO Resinas 5 9 5 9 2 A oleo addita ides 5 9 5 3 3 ENDORSER SOLENOID sei see dr tent taire a Spleen EE rsen paper 5 10 538 4 RELAY SENSOR ede Eed ri E e RA EXE acid 5 10 5 4 ADF AND LEFT SIDE iecore os 5 11 5 4 1 ADU PAPER TRANSPORT MOTOR eee 5 11 5 4 2 DOCUMENT TABLE POSITION SENSOR eese 5 11 5 4 3 PICK UP CLUTCH DOCUMENT TABLE LIFT CLUTCH 5 12 5 5 SOANNERL ie eed sa eel tla REY dalla 5 13 5 0 EXPOSURE GEASS aia 5 13 5 5 2 EXPOSURE LAMP as ei esse De dee iii 5 14 5 5 3 SBU LAMP STABILIZER SCANNER MOTOR PSU 5 15 504 OB PEDRO 5 16 Dg O NO oa 5 17 5 5 6 HOME POSITION SENSOR corras ds 5 17 5 5 7 ADF INTERLOCK SWITGH sonia 5 18 5 5 8 SCANNER WIRE tni tk o ad V T RR RUE VUA AS BUD be ea 5 19 5 0 c c st EE EE ET EE 5 22 59 1 SUICIDA GR n 5 22 IROUBLESHOOTINQ
2. 22 December 1998 PAPER MISFEED DETECTION J1 J2 J3 J4 J5 J6 The leading edge of the original does not reach the feed sensor within the time required for feeding the distance between the pick up roller and the feed sensor 150 mm after the pick up clutch turned on N i sede oz gg S uo aq o a The leading edge of the original does not reach the read sensor within the time required for feeding the distance between the feed sensor and the read sensor 150 mm after the feed sensor was activated The leading edge of the original does not reach the feed out sensor within the time required for feeding the distance between the read sensor and the feed out sensor 30 mm after the read sensor was activated The trailing edge of the original does not pass through the feed sensor within the time required for feeding the maximum original length 2 m 60 mm after the feed sensor was activated The trailing edge of the original does not pass through the read sensor within the time required for feeding the original 75 mm after the read was activated The trailing edge of the original does not pass through the feed out sensor within the time required for feeding the original length 75 mm after the feed out sensor was activated If an original jam or an original non feed is detected the paper transport motor paper feed motor and the exposure lamp turn off Then the appropriate LEDs inform the user of
3. 5 Remove the registration guide plate A 1 connector 2 screws 6 Remove the rear cover see Scanner Exterior Operation Panel 7 Remove the stopper brackets B 1 screw each 8 Remove the pins C 9 Open the ADF cover 1 0 Remove the paper transport drum D 2 E rings 2 bearings 22 December 1998 ADF AND RIGHT SIDE 5 3 ADF AND RIGHT SIDE 5 3 1 PAPER FEED MOTOR A G411R516 WMF 1 Remove the ADF upper and ADF right cover see ADF Exterior 2 Remove the paper feed motor A 1 connector 3 screws 5 3 2 EDU p St o EE o on CA az og co A G411R517 WMF 1 Remove the ADF upper and ADF right cover see ADF Exterior 2 Remove the EDU A 3 connectors 2 screws 5 9 ADF AND RIGHT SIDE 22 December 1998 5 3 3 ENDORSER SOLENOID A G411R518 WMF 1 Remove the ADF upper and ADF right cover see ADF Exterior 2 Remove the endorser solenoid A 1 connector 3 screws 5 3 4 RELAY SENSOR A G411R519 WMF 1 Remove the ADF upper and ADF right cover see ADF Exterior 2 Remove the relay sensor A 1 connector 1 screw 5 10 22 December 1998 ADF AND LEFT SIDE 5 4 ADF AND LEFT SIDE 5 4 1 ADU PAPER TRANSPORT MOTOR G411R520 WMF 1 Remove the ADF upper and ADF left cover see ADF Exterior 2 Remove the ADU A 10 connectors 3 screws 3 Remove the paper transport motor B 1 connector 3 screws p St o EE o on CA az og
4. Scanner Motor Drives the scanners 6 SOP This contains the scanner indicator lamps 7 PSU Provides dc voltages to the system 8 IOB Controls the mechanical parts of the scanner 9 IPU Board Option Performs automatic text image separation dynamic threshold section area and document size detection 10 RCU Outputs a video signal of the reverse side of the original Duplex Model only to the SCU Exposure lamp Illuminates the original for exposure 1 8 22 December 1998 1 4 2 ADF 23 ELECTRICAL COMPONENT LAYOUT c o LI o Iz 16 17 G411V505 WMF No Name Function 12 ADF interlock switch Detects whether the ADF cover and platen cover are open or closed cuts the power supply to the machine 13 Paper transport motor Drives the paper transport drum 14 Feed sensor Detects when a document is just before the feeding position 15 Read sensor Synchronizes the original exposure timing 16 Paper feed motor This drives the pick up and feed rollers 17 CIS Duplex model only Contains the CCDs and LEDs that scan the reverse side of the original 18 EDU Option Controls the mechanical parts of the endorser 19 Endorser solenoid Moves the paper holding plate to hold the original at the Option endorser s printing position 20 Relay sensor Checks for original misfeeds 21 Feed out sensor Detects when a document is at
5. co 5 4 2 DOCUMENT TABLE POSITION SENSOR G411R521 WMF 1 Remove the ADF upper and ADF left cover see ADF Exterior 2 Remove the document table position sensor A 1 connector 1 screw 5 11 ADF AND LEFT SIDE 22 December 1998 5 4 3 PICK UP CLUTCH DOCUMENT TABLE LIFT CLUTCH A G411R522 WMF Remove the ADF upper and ADF left cover see ADF Exterior Remove the stopper bracket A 2 screws Remove the pick up clutch B 1 connector Remove the document table lift clutch C 1 connector 1 E ring Te 0 Soest 5 12 22 December 1998 SCANNER 5 5 SCANNER 5 5 1 EXPOSURE GLASS G411R514 WMF E St o EE os on CA ES 2 Z a ad G411R523 WMF Remove the rear cover See Scanner Exterior Operation Panel Remove the stopper brackets A 2 screws Remove the pins B Open the platen cover vertically Remove the lamp cover C 2 screws Remove the scale D 3 screws pb PARES AO E Remove the exposure glass E 5 13 SCANNER 22 December 1998 5 5 2 EXPOSURE LAMP B A G411R524 WMF 1 Remove the exposure glass see Exposure Glass 2 Slide the 1st scanner to the cutout A in the right frame 3 Remove the exposure lamp B 1 connector 1 screw 5 14 22 December 1998 SCANNER 5 5 3 SBU LAMP STABILIZER SCANNER MOTOR PSU D E rS St o EE o on CA o cm og ao G411R527 WMF G411R528 WMF Remove the exposure glass s
6. o lt m lt o E o o G o o rc G411R534 WMF 1 2 3 4 Remove the exposure glass see Exposure Glass Remove the stopper brackets A 1 screw each Remove the ADF B 4 connectors 4 screws Remove the operation panel front cover right cover and left cover see Scanner Exterior Operation Panel 5 Remove the left frame C 11 screws 6 Remove the right frame D 11 screws 5 19 SCANNER 22 December 1998 10 11 12 13 14 15 16 17 G411R536 WMF Remove the right and left scanner wire brackets A 1 screw each Then remove the 1st scanner Remove the tension spring B Loosen the screw C securing the wire tension bracket D Remove the scanner wire E Secure the 2nd scanner with the scanner positioning tools P N A0069104 F Wind the new scanner wire around the scanner drive pulley in the correct direction as shown Wind the end of the new wire with the ball as shown O Wind the end of the new wire with the ring as shown and Wind the new scanner wire for the other side as well Install the tension spring B on the wire tension bracket D Tighten the wire tension bracket D 22 December 1998 SCANNER H G411R535 WMF 18 Install the 1st scanner and adjust its position with the scanner positioning tools P N A0069104 G 19 Secure the 1st scanner with the scanner wire bracket H 1 screw each 20 Remove the posit
7. 39 39 91 2 39 XAWKD 0 XSMREF2 a 441 417 Da ME 83 2 42 XAWKD G Been 2 48 45 XAWLSYNC ond 96 lg 45 45 97 46 46 98 a HB XOPBSYNC 4 20 mx as oe ear SND 105 52 a XARKDOD ADO 4 04 z 225 XARKD 6 ADE7 fq 104 Pu umm iu we Abs 4 106 55 55 o ADES 107 If 56 56 Ao GND 108 57 57 AD AUD Tos A ADES M 6 ADO1 60 50 A ADE kis 62 62 D XEON a r4 E S m Se a 65 es Did AE La D 14 5VE 66 66 E 118 XC3VDTCT 5 w Qu 5VE 67 677 GND Ena BZ anaron E y 9 ggzuzv2 Ze GND 18 68 68 GND ES 52588 9595558 56 GND 120 GND Sabes 9329 yoooooVobSSwuwwBB9939YESESISS VVVVLVUUAABWUWWAYS CN101 22625888222999999 82266066662636 4888822299999998622600666 L AEREE re p pens pe pu p pon p pr pope p pa pr pos po posu pe o pa pr po p s pes pn pase pu pr pon po p po pa pony e p pr po p pon an pen pn pn scsiuF exsexeezesessaSSRESSSSSSSSSSSSSSSS95993 3 55 5 9 FG E 1 2 CN310 CN303 1 FU101 GND A5 Relay Sensor 5VS 24VADU 24VADU W24 ASOUT W24 XASOUT W24 BSOUT V24 XBSOUT 24VADU 24VADU W24 ASOUT W24 XASOUT W24 BSOUT V24 XBSOUT 15VLED CN204 CN302 XTMREF1 XTMREF2 TWMODE2 XTMRST XFMREF1 Signal Table IOB AC Line DC Line Puls Signal Direction Signal Direction XENOINST ADU XJMSN XOPBSYNC GND GND CLKSBU GND GND GND XCLK GND GND GND ADE7 ADO7 ADE6 ADO6 GND GND ADES ADO5 ADE4 ADO4 GND GND ADE3
8. A the lift shaft B the document table position sensor C and the sensor actuator on the gear D In standby mode the bend in the lift shaft H is pointing downwards and the actuator is just inside the sensor When an original is placed on the document table the document sensor E is activated Then the paper feed motor G turns on At the same time the document table lift clutch A turns on to rotate the lift shaft At this time the actuator starts to turn anticlockwise and the flat part of the spring I that is loosely attached to the bend in the lift shaft pushes up the document table see the next page for a diagram When the top of the document stack is pushed up against the pick up roller it can rise no more However the mechanism continues to push up against the tray until a half turn of the shaft has been completed i e until the actuator leaves the document table position sensor At that time the document table lift clutch and the paper feed motor turn off If the actuator does not leave the sensor within a certain time a document table error will occur The feed motor turns on again at a motor speed which depends on the scanning resolution and the pick up clutch F turns on to feed the top sheet of the original see Original Feed and Separation 2 9 SCANNER MECHANISMS 22 December 1998 G411D519 WMF When the first original is being fed the bend in the lift shaft i
9. ADO3 ADE2 ADO2 GND GND ADE1 ADO1 ADEO ADOO GND GND 24VSC GND W24 Exposure Lamp GND V5 H P Sensor 5VS GND V5 Start V5 Clear Mode W5 Power LED 5 Busy LED V 5 Original Detect LED 5 Error LED 5VE 24VSC 24VSC V24 ASOU 24 XASOU V24 BSOU V24 XBSOU GND OPRXD OPTXD GND OPCLK 12V BEEP 5VE 5VE 12V GND GND GND GND 12V 24VSC GND 24VADU 24VADU GND GND GND GND 5VS 5VS 5VE 5VE Active High Active Low Voltage XDFOPN XFNEB XPWDWN GND GND GND RADU GND A5 Feed out Sensor 5VS GND V5 Document Table Position Sensor 5VS GND 45 Document Sensor 5VE GND 45 Feed Sensor 5VS GND 45 Read Sensor 5VS W24 Document Table Lift Clutch 24VADU 24 Pick up Clutch 1 eo 11 CN305 1 L2 T8 El HH 2 S Feed out Sensor H 8 6 lg 5 s2 Document Table Position jee Bye Sis Sensor AR g 318 t s 212 s Document Sensor CN306 1 DTS le 2 133 g HE a s Feed Sensor 4 EJES g t s 88 85 Read Sensor CN307 1 Scanner Motor 3 24VADU A e eee lol elo le 3 i GND 2 z 9er eese 3 FG O gt ZZ00F200 8882228986 CN202 CNS 21 SFs2 53 5 46 6 245 Pais E R W24 Endorser Solenoid 2 B 24ADU 2 13 38 315 367 16 35 3T 34 ig 33 19 32 EDU 2229 CN402 23 28 A TMDN O 387 SBU SEND Em ae 337 EIE 282
10. Processing This process generates up to 256 image density levels for each pixel Dithering Dither processing produces good quality grayscale images of photo originals Error Diffusion The error diffusion process reduces the difference in contrast between light and dark areas of a halftone image Each pixel is corrected using the difference between it and the surrounding pixels The corrected pixels are then compared with a matrix table Binary Picture Processing Each video signal level is converted from 8 bit to 1 bit black and white image data in accordance with a threshold value White Black Conversion Inverts the image converts from white to black and vice versa After video processing the data goes to the host computer through the memory and SCSI controllers 2 20 22 December 1998 REVERSE SIDE SCANNING 2 5 REVERSE SIDE SCANNING 2 5 1 OVERVIEW N i sede oS 2 Su uo a o a B G411D516 WMF The CIS Contact Image Sensor unit A which is in the document exit area scans the reverse side of the document The front side of the document is scanned first Then the document goes to the reverse side scanning area The white roller B pushes the document against the CIS unit for scanning and feeds the document to the exit area The position of the CIS unit is fixed in the scanner and cannot be adjusted in the field REVERSE SIDE SCANNING 22 December 1998 2 5 2 CIS CONTACT IMAGE
11. SENSOR UNIT CE a a S iet Y y Ni D Di G411D513 WMF E Eg G411D528 WMF The CIS unit consists of the LED array 68 chips line x 2 lines A rod lens array B five CCDs C and the CIS drive board D this contains the CCD drive circuit analog processing circuit A D converter shading correction IC and LED drive circuit The CIS unit scans 4800 pixels in the main scan direction at a resolution of 400 dpi 15 7 lines mm There is a row of LEDs on each side of the CCD so that the light is of almost equal intensity in all directions This reduces shadows at the edges of documents The five CCDs are arranged as shown above viewed from directly above the original feed path The CCDs have dummy pixels at the ends so to get a continuous scan across the page the CCDs have to overlap However as a result a continuous line cannot be scanned across the page at the same time Data is held in memory and combined later In book mode when scanning the front side the scanner may stop if the buffer fills up This may happen if the data is complex Scanning may not start again in exactly the same place due to mechanical inaccuracies This is not a big problem when scanning the front side However for the reverse side because a complete scan line is not scanned at the same time it could mean loss of data Because of this reverse side scanning is only enabled at 6 reproduction ra
12. Scanner Drive A D E G411D522 WMF The scanner drive motor A a stepper motor drives the 1st and 2nd scanners B C through the timing belt D scanner drive pulley E scanner drive shaft F and two scanner wires G The IOB board drives the scanner drive motor The scanning speed depends on the scanning resolution The returning speed depends on the distance from the home position sensor 22 December 1998 SCANNER MECHANISMS Basic Scanning Procedure When the scan command is received from the host computer the scanner starts scanning as explained in the following steps Detailed Descriptions D G411D524 WMF Initialization The scanner checks the home position scanner cover and memory If an error is detected the scanner motor will stop The scanner scans the white plate A on the underside of the ADF exposure cover to perform the shading function Image Scanning The scanner starts to scan the image area at the designated position B The scanner stops after scanning the designated image area C The arrows indicate that the scan start position and image area depend on the settings input by the user Scanner Reversing After the image has been scanned the scanners return to the home position D The scanners are stopped when the first scanner activates the home position sensor E If the scanner home position sensor is not activated within a certain time a home position sens
13. assembly A 3 screws 5 24 CIS s B 23 G411R508 WMF 1 Remove the document table assembly See Document Table Assembly 2 Remove the stopper bracket A 1 screw 3 Remove the ADU See ADU Paper Transport Motor 4 Remove the CIS B 2 connectors 1 screw 5 5 ADF AND UPPER SIDE 22 December 1998 5 2 5 SCANNING GUIDE PLATE G411R509 WMF 1 Remove the ADF upper ADF left and ADF right cover See ADF Exterior 2 Remove the scanning guide plate A 2 screws 5 2 6 FEED SENSOR C B G411R510 WMF 1 Open the ADF cover A 2 Remove the feed cover B 2 screws 3 Remove the feed sensor C 1 connector 1 screw 5 6 22 December 1998 ADF AND UPPER SIDE 5 2 7 READ SENSOR G411R511 WMF 1 Remove the rear cover See Scanner Exterior Operation Panel 2 Remove the read sensor A 1 connector 1 screw 5 2 8 FEED OUT SENSOR p St 7 EE o on CA a gt og ao A G411R512 WMF 1 Remove the feed out cover A 2 screws 2 Remove the feed out sensor B 1 connector 1 screw 5 7 ADF AND UPPER SIDE 22 December 1998 5 2 9 PAPER TRANSPORT DRUM B G411R513 WMF D G411R514 WMF G411R515 WMF Remove the separation unit see Separation Unit Remove the paper feed motor see Paper Feed Motor Remove the ADU see ADU Paper Transport Motor Remove the paper transport motor see ADU Paper Transport Motor 1 2 3 4
14. in duplex mode 400 dpi scan in duplex mode ADF free run 1 2 3 4 5 6 7 8 9 Not used The scanner drives the ADF without any documents NOTE During the demonstration the LEDs indicate the machine status as usual But if an error occurs during the demonstration e g mis feed jam etc the scanner stops and the LEDs indicate the error condition 4 2 22 December 1998 DIP SWITCH SETTINGS Table B Component Test Mode SCSI ID Rotary Switch No Contents All components off Exposure lamp on off Document table lift clutch on off Pick up clutch on off CIS LEDs on off Endorser solenoid Cooling fan motor on off Not used Not used Not used o 1 2 3 4 5 6 7 8 9 When the Start button is pressed to start the test the component turns on and off repeatedly Table C Sensor Test Mode SCSI ID Rotary Switch No Contents 0 Home position sensor Read sensor Document table position sensor Document sensor ADF cover interlock switch Feed sensor Feed out sensor Relay sensor Not used Not used OO N OO KO PO If the selected sensor is on all LEDs turn on If the selected sensor is off all LEDs turn off 4 3 DIP SWITCH SETTINGS 22 December 1998 Table D Self Diagnostic Mode During the self diagnostic mode the scanner performs the following tests 1 Home po
15. lt 7 6 3 TROUBLESHOOTING PROCEDURES 22 December 1998 Document Jam Symptom The problem cannot be solved with the procedures in the user s manual Possible Causes e Damaged separation unit e Damaged paper transport drum assy e Damaged paper feed out unit e Defective paper transport motor or paper feed motor e Defective read sensor or feed out sensor e Defective SCU IOB or ADU Procedure First of all check the sensors with demonstration and sensor check mode See Service Level Functions Dip Switch Settings Are all the sensors OK Yes No Is the cable damaged Yes No Replace the sensor Replace the cable Does the jam always happen at the same position Yes No Are the 24 volt lines from the PSU to the IOB 24VADU or from the IOB to the ADF OK Yes No Is the cable damaged Yes No Replace the PSU Replace the cable Is the 24 volt line from the ADU to the paper transport motor OK Yes No Is the cable damaged Yes No Replace the ADU Replace the cable Replace the paper transport motor NOTE If the feed motor is defective a Document Table Error is generated Did the jam occur at the paper transport drum assy Yes No Replace the paper feed out assy Replace the paper transport drum assy 6 4 22 December 1998 TROUBLESHOOTING PROCEDURES Paper Misfeed Symptom The problem cannot be solved with the procedures in the user s manual Possible Causes e Damaged separation uni
16. of these has an analog processing IC The analog processing IC performs the following operations on the signal from the CCD 1 Z C Zero Clamp Adjusts the black level reference for even pixels to mach the odd pixels 2 Signal Amplification Operational amplifiers in the AGC Auto Gain Control circuit amplify the analog signal The CPU on the SCU board controls the maximum gains of the operational amplifiers After the above processes the analog signals are converted to 8 bit digital signals by the A D converters This gives a value for each pixel on a scale of 256 grades Then these signals go to the SCU board 2 17 IMAGE PROCESSING 22 December 1998 2 4 3 IPU IMAGE PROCESSING UNIT Overview Analog IC 1 Analog Processing IC 2 Memory Selector Controller SCSI AM ero se SE EUA EA NS G411D505 WMF The image data from the SBU goes to the IPU IC on the SCU board which carries out the following processes on the image data Auto shading Magnification Mirror processing Filtering MTF and smoothing y gamma correction Binary picture processing Error diffusion 1 2 3 4 5 6 Grayscale processing 7 8 9 Dithering 1 0 White black conversion The image data then goes to the memory controller IC 2 18 22 December 1998 IMAGE PROCESSING Image processing path The following image processing is for the scanner simplex model not including the optional IPU The image pro
17. the machine s status If an original remains in the ADF the original is fed out and the paper transport motor stops 2 15 IMAGE PROCESSING 22 December 1998 2 4 IMAGE PROCESSING 2 4 4 OVERVIEW Duplex model only Memory DRAM J Control IC G411D508 WMF The CCD generates two analog video signals The SBU Sensor Board Unit converts these analog signals to 8 bit digital signals then it sends these digital signals to the SCU Scanner Control Unit board through the IOB board The IPU Image Processing Unit IC on the SCU does the image processing then the image data goes to the computer through the Memory Control IC and the SCSI controller The CIS Contact Image Sensor unit in the duplex model for reverse side scanning outputs two digital signals The IPU on the RCU Reverse Control Unit board does the image processing then the image data goes to the computer through the SCU 2 16 22 December 1998 IMAGE PROCESSING 2 4 2 SBU SBU m Seu o Analog Processing IC1 gt A D 1 8 bit data E a FE o IPU s j e E Analog E Processing IC2 gt A D 2 8 bit data G411D507 WMF The CCD converts the light reflected from the document into an analog signal The CCD line has 5 000 pixels and the resolution is 400 dpi 15 7 lines mm The CCD has two output lines for odd and even pixels Each
18. 125 V Home position error White level error Document table working error FU32 4 A 125 V SE m 9 FU33 5 A 125 V No response Exposure lamp error FU35 5 A 125 V RCU error Fuse ADU Duplex Model FU101 1 25 A 250 V CIS error EDU Endorser error FU401 3 15 A 250 V Endorser does not work Lamp Stabilizer FU1 1 A 60 V Exposure lamp error 6 16 22 December 1998 IPU IMAGE PROCESSING UNIT 7 OPTION 7 1 IPU IMAGE PROCESSING UNIT 7 1 1 OVERVIEW The IPU does the following Dynamic Threshold This function automatically determines a suitable threshold value based on the original and converts the scanned image to binary data Auto Photo Letter This function automatically identifies the text portions of an original and the photographic portions and scans each in a suitable scan mode Document Size Detection This function automatically detects the width of an original and sends the information to the host computer Section Area This function selects an area within an original and sets scanning conditions for that area IMAGE PROCESSING PATH 22 December 1998 7 2 IMAGE PROCESSING PATH The following image processing is for the scanner with the optional IPU SCU Optional IPU Size Magnification Optional mm Section White Black Detection Mirror Process IPU Area conversion SCU Memory Controller Binary Filtering Dynamic Threshold B
19. 3 9 E 188 Id 2922 Q So v 31 20 FU401 XENDINST 5 3 19 svs 9 1 33 18 34 17 35 16 36 15 37 14 38 13 39 12 40 11 4i 10 GND 42 9 43 8 44 7 45 g on 46 5 327 4 48 3 49 5 GND 50 1 FS Exposure Lamp CN205 E H S Lamp Stabilizer gt NE E NS 4 kat E CN208 CN601 1 8 lg 2 7 3 6 5 3 SOP 2 1 CN1 CN1 az Document Table Lift Clutch Pick up Clutch ou Endorser Solenoid Endorser FG ADF Interlock Switch CNA 2 24VADUO 24VADUO CN210 CN5 ele i oaa co ro ele i oaa co o CNI 25 anloj ajaja a 00 io en 43 co o CN a noe la EIS 24VADUO 24VADUO 10 11 B
20. 6 System Error is indicated and the details can be checked with the self diagnostics see section 6 3 e Even if an error is detected for item 2 scanning can start in book mode og ae EN oo 1 Hoy ERROR INDICATION 6 3 ERROR INDICATION If the self diagnostics find an error the error is displayed by a combination of the four LEDs on the scanner If the dip switches on the rear of the machine are set up for normal operation the error is indicated roughly for users When the dip switches are set to the self diagnostic mode position the system error is indicated in detail for technicians 6 3 1 USER LEVEL ERROR INDICATION Conditions Contents Originals on the table 22 December 1998 Machine Initialization Overall machine check On On Demonstration Mode On On Stand by Normal mode No On Off Off Yes On Off On mode Scan wait No On Off Blinking Yes On Off Blinking Scanning Normal mode No On On Off Yes On On On User visible ADF cover switch open On Off Off On Error Conditions Document jam On Off Blinking On Document misfeed On Off On On Document table error On Off Blinking Blinking Endorser error Blinking Blinking On Off System Error Blinking Blinking Blinking
21. AYOUT uscite dh dace oli eo 1 3 121 FRONT VIEW AN ee EIN E 1 3 Jo 2 REAR AA 1 4 ie EE E ERA ELE DUE NL acta HAE EU 1 5 Iac DRIVE LAYOUT I LEDE SG meds DLE Ae Io TE 1 6 T3 SCANNER A Sede e s ne E LIA KA Les 1 6 Dino blas 1 7 1 4 ELECTRICAL COMPONENT LAYOUT enne 1 8 DA Ip SG ANNIE Ee diede A IRR RDUM E 1 8 TAD ADE aos hun dE C IC LOEO ED E TE 1 9 2 DETAILED SECTION DESCRIPTIONS eene 2 1 2A INITIALIZATION A de ee eo tar ue ed iae sa WEE 2 1 2 2 SCANNER MECHANISMS renes 2 3 Dod BOOK MODE d stems too SRI EE AE 2 3 DDO ADE MODE co ru arbusta EG ONU LOU AL aa TRE 2 7 2 3 PAPER MISFEED DETECTION 2 14 24 IMAGE PROCESSING 2 is ee est EE iia 2 16 DC OVERVIEW EAN 2 16 Ed EE EE RUE EA AE O EE DAT 2 4 3 IPU IMAGE PROCESSING UNIT s 2 18 2 5 REVERSE SIDE SCANNING ccccssescsesccsceccececcesesseessescessecrsceecerscesesseses 2 21 254 OVERVIEW A b creber GR 2 21 2 5 2 CIS CONTACT IMAGE SENSOR UNIT 2 22 2 53 IMAGE SCANNING toa 2 23 2 6 ENDORSER UNIT ee ee ee ee ee terere 2 24 2 63 OVERVIEW Se EE EDU DIU RR AR IRR TRI HEU D RU 2 24 2 6 2 ENDORSER UNIT eene 2 25 DF LOW POWER MODE a0 ath ores atu um eno a natae ats 2 26 2 8 MAIN PCBs AND THEIR FUNCTIONS ee ee ee ee ee ee ee 2 27 2 8 14 BOARD STRUCTURE ee do ee ee pec see ke 2 27 2 82 SCU SCANNER CONTROL UNIT vaticano 2 28 2 8 3 IOB INPUT OUTPUT BOARD 2 29 2 8 4 ADU ADF DRIVE UNIT ss tic aa
22. BU e Defective IOB e Defective SCU Procedure Does the exposure lamp light during scanning Yes No Does 24 volts come to the lamp stabilizer Yes No Is the cable damaged Yes NO Replace the PSU Replace the cable Replace the exposure lamp Does the exposure lamp light Yes NO Replace the lamp stabilizer Go to the next step Are all mirrors installed properly Yes No Reseat any mirrors that are out of place Does the SBU generate the correct signals Yes No Replace the SBU Replace the SCU If that does not work try changing the IOB Document Table Error Same as for the user visible error condition See section 6 4 1 6 9 o o o lt 7 TROUBLESHOOTING PROCEDURES 22 December 1998 CIS Error duplex model only Symptom The white level of the reverse side scanning cannot be adjusted Possible Cause e Defective CIS unit e Defective ADU e Defective RCU e Defective SCU Procedure Does the LED array light YES NO Does 15 volts come to the CIS unit Yes NO Is the cable damaged Yes NO Replace the ADU Replace the cable Replace the CIS unit Does the CIS generate the correct signals Yes NO Replace the CIS unit Does the RCU generate the correct signals Yes No Replace the RCU Replace the SCU 6 10 22 December 1998 TROUBLESHOOTING PROCEDURES Shading Error Symptoms A shading error occurs when one of the following conditions occurs e The difference in black level cannot be adj
23. Blinking On LED on Blinking LED blinking Off LED off 6 3 2 TECHNICIAN LEVEL ERROR INDICATION Error Items LEDs Green Green Green Red Memory error Simplex Blinking Off Off Off Memory error Duplex Off Blinking Off Off Exposure lamp failure Blinking Blinking On On CIS error Blinking Blinking On Blinking White level error Blinking Blinking Off Off Home position error Blinking Blinking Blinking On SCU error Blinking Off Off Blinking RCU error Blinking Off On Blinking Optional IPU error Blinking On LED on On Off Blinking Blinking LED blinking Off LED off 6 2 22 December 1998 TROUBLESHOOTING PROCEDURES 6 4 TROUBLESHOOTING PROCEDURES There are two types of troubleshooting procedure e For user visible error conditions that the user could not clear up e For technician level error conditions 6 4 1 USER VISIBLE ERROR CONDITIONS ADF Interlock Switch Open Symptom The problem cannot be solved with the procedures in the user s manual Possible Causes e Defective ADF interlock switch e Damaged cable between the ADF interlock switch and the PSU Procedure Does 24 volts come to the ADF cover interlock switch Yes No Is the cable damaged Yes No Replace the PSU Replace the cable Replace the ADF interlock switch o o o
24. Blinking System error On LED on Off LED off Blinking LED blinking When the machine is switched on all LEDs should light briefly However in these tables indicates that the LED does not light up briefly at power up 6 14 22 December 1998 INDICATION WHEN A CONNECTOR IS OUT OF POSITION 6 5 2 ADF Document Sensor Pick up Clutch EI Document Table Lift C 3 Clutch Document Table Position Sensor Feed out Sensor HE i g O z G411T501 WMF Scanner LEDs Connector Green Green Red Remarks Off Off Off Off Blinking Blinking Document table error Off On Off Off Off Off Off Off Off Ei Off Blinking Blinking Document table error 2 Off Off Off Off Off Off Off Off Off 10 CN304 Off Blinking Blinking Document table error 11 Off Blinking Blinking Document table error 12 Off Off Off 13 Off On Off 14 Off Blinking Blinking Document table error 15 Off Off Off On LED on Off LED off Blinking LED blinking When the machine is switched on all LEDs should light briefly However in these tables indicates that the LED does not light up briefly at power up 6 15 BLOWN FUSE CODITIONS 22 December 1998 6 6 BLOWN FUSE CODITIONS Rating Symptom when turning on the main switch 115 V 220 240 V Power Supply Unit FU1 5 A 125 V 3 15 A 250 V No response Exposure lamp error FU31 4 A
25. D THEIR FUNCTIONS 2 8 3 IOB INPUT OUTPUT BOARD IOB N i GO oS 2 Su uo aq o a Scanner Scanner Motor Driver Motor H P Sensor Stabilizer Exposure Lamp Operation Panel 5V 12V Driver gt 24 ADU 24V ADU Interlock SS Switch G411D510 WMF The IOB contains the drive circuits for the scanner motor and the exposure lamp The control signals such as drive and rotation direction and drive current for the scanner motor come from the SCU Also the control signal for the exposure lamp comes from the SCU The image signals from the SBU go through this board to the SCU 2 29 MAIN PCBS AND THEIR FUNCTIONS 22 December 1998 2 8 4 ADU ADF DRIVE UNIT ADU Paper Motor Driver Transport Motor ea Motor Driver O m BV gt 24V ADU EER lutch o 12V I EDU CIS Unit G411D511 WMF The ADU drives the motors and clutches in the ADF unit Also it informs the sensor status to the SCU The SCU generates the control signals for each electrical component and the endorser then these are sent to the ADU through the IOB The drivers on the ADU convert the control signals into drive pulses for the motors 2 30 22 December 1998 ENVIRONMENT 3 INSTALLATION 3 1 ENVIRONMENT 3 1 1 PRECAUTIONS Please observe the following pr
26. HS2P Machine Code G407 G408 G410 G411 Service Manual EB Issued on 22nd December 1998 Ricoh Co Ltd ANIMPORTANT SAFETY NOTICES Before disassembling or assembling parts of the scanner and peripherals make sure that the scanner power cord is unplugged The wall outlet should be near the scanner and easily accessible The output voltage of the PSU Power Supply Unit can be either 100 120 Vac or 220 240 Vac without any adjustment Make sure that the above voltage is used The power cord should be an approved type in accordance with the regulations for the country in which the scanner is used The use of cables other than the shield I O cables or equivalent specified will invalidate the certification of this scanner and may cause interference levels which exceed the limits established for this equipment Maintenance Information The user s manual explains how to use and maintain the scanner Before performing the maintenance read the user s manual Warning concerning copyright Many documents are copyrighted Such documents may not be reproduced by scanning or in any other form without the express permission of the copyright holder Notice The contents of this manual are subject to change without notice TABLE OF CONTENTS 1 OVERALL MACHINE INFORMATION enn 1 1 SPECIFIC A MON Sut dao M LT dat 1 1 is MAIN BOD A EAA 1 1 PAD ENDORSE Rori EE od Spd Se adu 1 2 1 2 COMPONENT L
27. a 2 30 3 INSTALLATION EE 3 1 oil ENVIRONMENT SERS OE EE DE a 3 1 3 1 PRECAUTIONS nete iaa is 3 1 3 1 2 ENVIRONMENTAL CONDITIONS eee 3 1 duo MACHINE LEVEL Sas RE n o oa 3 1 3 1 4 MINIMUM SPACE REQUIREMENTS eee 3 1 3 1 5 POWER REQUIREMENTS iss sees geeis eek donna deed eN 3 2 3 2 USGANNEERINSTAEENTIDI ae pa ted ra Ee copo t as 3 2 3 3 IPU UNIT INSTALLATIGN asse ur AE trn ti 3 2 3 4 ENDORSER UNIT INSTALLATION esee 3 3 341 ACCESSORY CHEGK a cnn vetu oki ke EE aaa 3 3 3 4 2 INSTALLATION PROCEDURE see ee ese see ee eke seed ee ee ee ek nnne 3 4 3 4 8 STAMP DENSITY ADJUSTMENT PROCEDURE 3 6 3 5 RED LAMP UNIT INSTALLAT ON ees ees eek ee nemen nnnm 3 7 3 5 1 ACCESSORY CHECK muinera PER nob bsc En ER Eli tl 3 7 3 5 2 INSTALLATION PROCEDURE corner cita pit kid hn tes 3 8 4 SERVICE LEVEL FUNCTIONS se ee see ee ee ee ee eek ee 4 1 4 1 DIPSWITCH SETTIN OS acidi nti oic iaa 4 1 4 IPEDS TE LL POINTS aaa 4 6 LINER cM Cc 4 6 4 2 2 TEST POINTS ei iese ee ig in Se be ek we be kg oe eg eg ee 4 6 43 SPECIAL TOO P ITE 4 6 5 REPLACEMENT AND ADJUSTMENT eeeeeee 5 1 BH COVERS S stades dace te Rd ee De DS EG RD oe edet 5 1 Bell ADE EXTERIOR DADAS 5 1 5 1 2 ADE COVER usse e dete XL ed UNO AR RA dd N ARN Se ee AN LAE CREE 5 2 5 1 3 SCANNER EXTERIOR OPERATION PANEL
28. an 26 kg 57 3 Ib Add 1 kg 2 2 Ib when the Endorser is installed 470 x 677 x 278 mm 18 5 x 26 7 x 10 9 19 characters max 43 characters 01234567891 AB Z 1 6 W x 2 8 H mm 2 4 mm 20 1 line main scan direction Ink roll type Ink roll exchange Purple a 7 4mm b 0 5mm Document front side G411V506 WMF 22 December 1998 COMPONENT LAYOUT 1 2 COMPONENT LAYOUT UN IR WI LA Zw J LAA c o LI o Iz 4 G411V500 WMF No Name Function Platen cover Covers the document and serves as a neutral 1 background for documents placed on the main exposure glass 2 ADF exposure cover Covers the scanner and closes the ADF exposure cover interlock switch Also contains an exposure glass 3 Scale Used for positioning a document when placing it on the exposure glass Scanner indicator lamps The green and red lights indicate the condition of the E scanner 5 Power switch Turns the power on and off 6 Main exposure glass A document to be scanned in book mode is placed face down on this glass 1 3 COMPONENT LAYOUT 22 December 1998 1 2 2 REAR VIEW G411V501 WMF Name Function Reset switch If this is pressed the machine is reset DIP switches Used to select various scanning modes and test modes Interface for reverse side Interface for the video signal during reverse side scanning scanning Duplex model only SCSI co
29. asured by motor pulses When the CPU has fed the trailing edge of the original 30 mm past the feed out sensor the transport motor turns off 2 11 SCANNER MECHANISMS 22 December 1998 Optional Steps Size Detection E k Y P A GENE uo V d N B D IC G411D523 WMF If selected this is done after document table lift paper feed 1 Main Scan Direction Document Width This function will be available when the optional IPU board is installed First of all the original is fed to the scan ready position between the read sensor B and the size detection position C Then the first scanner moves to the size detection position C from the ADF scanning position D After that the original is fed to the ADF scanning position As a result of the above operation the original is fed 5 mm past the first scanner Then the CPU detects the original width The edge of the document is detected by the difference between the level of the document data and the background level which is provided by the black bracket located over the ADF exposure cover If there is a gap at the leading edge such as a tear or a black stripe extending more than 1 mm across the paper and more than 5 mm down the paper the machine cannot detect the document width past this gap In this case an error message may appear and scanning is impossible Disable this feature to allow the machine to scan this document After finishing the above oper
30. ation the first scanner returns to the ADF scanning position 2 Sub Scan Direction Document Length The length of the original is calculated by counting the motor pulses while the feed sensor A is on The length is detected during scanning 2 12 22 December 1998 SCANNER MECHANISMS Read Size Command If selected this is done after document table lift paper feed If the scanner receives a Read Size command in ADF mode it detects the document size in the main scan direction as described on the previous page The scanner sends the width data to the host computer Abort and Unload Commands N i sede oz gg Su uo aq o a These can occur at any time during the basic scanning procedure When the CPU receives the Abort or the Unload command during paper transport the scanner feeds out any original that is in the ADF 2 13 PAPER MISFEED DETECTION 22 December 1998 2 3 PAPER MISFEED DETECTION Start Paper Feed Motor Pick up Clutch Document Table Lift Clutch Document Table Position Sensor Document Sensor MAX Mem READ Paper Transport ore Motor vaD i v Feed Sensor ti YOD v Read Sensor QT wu l v l v Feed out Sensor 151 t6 bet et gt l FGATE EEN OE EE N G411D527 WMF FGATE When this signal is high scanned data is valid Unit milliseconds t6 L x 0 011 x 200 L x 0 011 x 400 L Document length mm 2 14
31. ble lift clutch Check the table lift mechanism Replace the SCU NOTE If the 5 volt line is defective the ADF LEDs will not work so the error type will not be visible Therefore it can be assumed that there is a problem with a timing signal All timing signals are generated in the SCU and the problem can be fixed by replacing the SCU 6 6 22 December 1998 TROUBLESHOOTING PROCEDURES Endorser Error Symptom The problem cannot be solved with the procedures in the user s manual Possible Causes e Defective endorser unit e Defective EDU Procedure Is the endorser unit is broken Yes No Is the cable between the EDU and the endorser unit or the ADU and the EDU OK Yes No Replace the cable Replace the EDU Replace the endorser unit o o o lt 7 6 7 TROUBLESHOOTING PROCEDURES 22 December 1998 6 4 2 SERVICE CALL ERRORS SYSTEM ERRORS If a system error occurs the following errors can be detected with the self diagnostics using the dip switches See Service Level Functions Dip Switch Settings Memory Error Symptom This error occurs in the following conditions e SRAM read write error e DRAM read write error e Memory over run error Possible Cause e Defective SCU Procedure Replace the SCU 6 8 22 December 1998 TROUBLESHOOTING PROCEDURES Lamp Error Symptom The white level cannot be adjusted Possible Cause e A mirror is out of position e Misalignment e Defective S
32. cessing for each of these units is explained in separate sections However when the optional IPU is installed the IPU IC on the SCU only does the shading 1 Without Optional IPU N i sede oS 2 Su uo a o a Memory Controller Shading Magnification Dither Binary process White black correction Mirror Process Error Diffusion yp conversion 2 With Optional IPU I I Optional I I l I l Shading correction G411D500 WMF Shading Correction The machine scans the white plate opposite the ADF exposure glass to make a white waveform Shading correction prevents uneven images caused by fluctuations in scanned data due to changes in light intensity and CCD sensitivity Magnification Reduction and enlargement in the sub scan direction are done by changing the scanner motor speed or paper transport motor speed in the ADF However reduction and enlargement in the main scan direction are done by the IPU Mirror Processing A mirror image of the original must be made for output Filtering There are two software filters the MTF filter and the smoothing filter The MTF filter emphasizes sharpness and is used with text only documents or documents that contain text and photo areas The smoothing filter is used for photo image documents 2 19 IMAGE PROCESSING 22 December 1998 Gamma y Correction The gamma curve corrects the response of the CCD to grayscales in the original Grayscale
33. connect the L ff three cables K to the EDU board L da ife o Ni L 6 Install the core M 7 Open the platen cover Install the endorser unit N as shown 1 connector 8 Attach the decal O G5141506 WMF 9 Reinstall the endorser right and upper covers ENDORSER UNIT INSTALLATION 22 December 1998 3 4 3 STAMP DENSITY ADJUSTMENT PROCEDURE 1 Open the ADF cover A Remove the ADF upper cover B 2 screws ADF right cover C 1 screw and the endorser cover D NOTE Remove the right cover by carefully lifting it from the rear 2 Remove the solenoid assembly screw E from the hole F and replace it in hole G Do not tighten the screw yet 3 Loosen the screw H and adjust the height of the bracket I NOTE To reduce the stamp density raise the bracket To increase the density lower the bracket 4 Tighten the assembly screw E to secure the bracket in the new position G5141507 WMF 5 Reinstall the endorser right and upper H covers 22 December 1998 RED LAMP UNIT INSTALLATION 3 5 RED LAMP UNIT INSTALLATION 3 5 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty T Exposure Lamps ati at a i appe E 1 2 Installation Procedure ee ee ee ee ee ee ee n 1 c E 2 5 ni Ld D lt RED LAMP UNIT INSTALLATION 22 December 1998 3 5 2 INSTALLATION PROCEDURE 1 Remove the rear c
34. e Letter size this means that the last few inches of a Legal size original will not be scanned Read Size Command If selected this is done after the Initialization step 1 Read Size Command If the scanner receives the Read Size command in book mode it detects the size in the main scan direction as described above The scanner sends the width data to the host computer After detecting the document size the scanner scans the detected area Abort Command This can occur at any time during the basic scanning procedure If the Abort command is received during scanning the scanner motor is stopped Then the scanner returns to the home position D in the previous diagram If this command is received while the scanner is reversing or checking the home position the operation is not interrupted 2 6 22 December 1998 SCANNER MECHANISMS 2 2 2 ADF MODE Overview D A N SS e N d F E Ed N i sede oS 2 Su uo a o a K A G411D517 WMF When the originals are placed on the document table A the document sensor B detects them The pick up roller C picks up the originals and transports them to the feed roller D The separation roller E turns in the opposite direction to the feed roller As a result just one original is sent to the paper transport drum G The feed sensor F detects whether the original has reached the transport drum or not Then the original turns with the transport d
35. ecautions in order to ensure safe operation of the scanner and to realize its full performance e Ambient illumination must be less than 2 000 lux do not expose to direct sunlight e Do not use the scanner in any location that is exposed to frequent vibration e Do not expose the scanner to dusty or corrosive atmospheric conditions e Ensure that the area in which the scanner is used is well ventilated 30 m hr person e Make sure that the surface on which you place the scanner is stable and level c E T i o c 3 1 2 ENVIRONMENTAL CONDITIONS Temperature 10 C to 32 C 50 to 90 F Humidity 20 to 80 3 1 3 MACHINE LEVEL 1 Front to back Within 5 mm 0 2 of level 2 Right to left Within 5 mm 0 2 of level 3 1 4 MINIMUM SPACE REQUIREMENTS Place the scanner near a power source providing clearance as shown A 10 mm 0 2 B 30 mm 1 2 C 600 mm 23 7 eis i FA G4111500 WMF SCANNER INSTALLATION 22 December 1998 3 1 5 POWER REQUIREMENTS NCAUTION 1 Be sure to ground the scanner 2 Make sure the plug is firmly inserted in the outlet 3 Avoid multi wiring 1 Input voltage level e 102 to 138 V ac 45 to 65 Hz e 187 to 276 V ac 45 to 65 Hz 2 Permissible voltage fluctuation 10 3 2 SCANNER INSTALLATION Please refer to the scanner user s manual for details 3 3 IPU UNIT INSTALLATION P
36. ed by turning the SCSI ID rotary switch and the machine s condition is indicated by the four LEDs on the covers A P A A A A A A Note the position of the SCSI ID rotary switch before you change it To return to normal operation mode after testing switch dip switches 5 to 8 all off return the SCSI ID rotary switch to its operating position then press the reset button Demonstration mode Scanner demonstration in book and ADF modes Refer to Table A later in this section Component test Each component can be tested refer to Table B later mode in this section Sensor test mode Each sensor can be tested refer to Table C later in this section Self diagnostic mode Results of the diagnosis are indicated through a combination of the LEDs on the covers refer to Table D later in this section and Troubleshooting in section 6 DIP SWITCH SETTINGS Dip Switch Item 22 December 1998 Contents ADF counter indication The number of pages scanned in ADF mode is indicated through a combination of the SCSI ID rotary Switch position and the LEDs refer to Table E later in this section Unit 2 1 sheet Max value 2 500k sheets Book mode counter indication The number of pages scanned in book mode is indicated in the same way as described above for ADF mode refer to Table E later in this sect
37. ed vee ass de rius da Vi ek ig ex ara de ese cien 6 1 6 1 SELF DIAGNOSTICS sr EE DE DE DE Ee Ea dud 6 1 6 2 CHECK ITEMS iiti etin tn aca tn ci ane ed Ke eu ee ed eed AN a LAE CRAS 6 1 6 2 1 ITEMS CHECKED DURING INITIALIZATION ese ee ee ee ee ee ee 6 1 6 3 ERRORINDICATION ees eris ee Re Ge RE Bee ie er Ee cedida 6 2 6 3 1 USER LEVEL ERROR INDICATION enne 6 2 6 3 2 TECHNICIAN LEVEL ERROR INDICATION eene 6 2 6 4 TROUBLESHOOTING PROCEDURES 5 inna nnn tu eran hae rns 6 3 6 4 1 USER VISIBLE ERROR CONDITIONS ee eene 6 3 6 4 2 SERVICE CALL ERRORS SYSTEM ERRORS sees 6 8 6 5 INDICATION WHEN A CONNECTOR IS OUT OF POSITION 6 14 6 5 1 SCAN Pcie ese eie ee ee Oe ee ri anit actuaries 6 14 Non 6 15 6 6 BLOWN FUSE GODITIONS EERS GE Ge deen redo ees 6 16 ede EE EE OG a dad ida dla dias 7 1 7 1 IPU IMAGE PROCESSING UNIT eem 7 1 Tet OVERVIEW Saa e AA E E 7 1 7 2 IMAGE PROCESSING PATH ie trn Vee ntn urna an ee ee Ke nn ax Ai wee 7 2 22 December 1998 SPECIFICATIONS 1 OVERALL MACHINE INFORMATION 1 4 SPECIFICATIONS 1 1 1 MAIN BODY Scanning method Book scan ADF Scanning resolution Grayscales Initialization time Scanning speed Scanning throughput Interface Power Power consumption without all possible options lt o z E LI o S Flat bed with ADF Horizontal Max 298 mm 11 7 Vertical Max 432
38. ee Exposure Glass Remove the lens cover A 4 screws Disconnect the flexible cable B Remove the SBU C 4 screws Remove the lamp stabilizer D 2 connectors Remove the operation panel see Scanner Exterior Operation Panel Remove the front cover see Scanner Exterior Operation Panel Remove the scanner motor E 1 spring 1 connector 2 screws O uin PEL O I Pr Remove the PSU F 5 connectors 2 screws 5 15 SCANNER 22 December 1998 5 5 4 IOB B G411R529 WMF 1 Remove the exposure glass see Exposure Glass 2 Remove the lens cover see SBU Lamp Stabilizer Scanner Motor PSU 3 Remove the PCB cover A 6 screws 4 Remove the IOB B 5 connectors 4 screws 5 16 22 December 1998 SCANNER 5 5 5 SOP G411R538 WMF 1 Remove the operation panel and the front cover see Scanner Exterior Operation Panel 2 Remove the SOP 1 connector p St 7 EE o on CA a gt og ao 5 5 6 HOME POSITION SENSOR G411R530 WMF 1 Remove the right cover See Scanner Exterior Operation Panel 2 Remove the home position sensor A 1 connector 1 screw 5 17 SCANNER 22 December 1998 5 5 7 ADF INTERLOCK SWITCH G411R531 WMF 1 Remove the rear cover see Scanner Exterior Operation Panel 2 Remove the ADF interlock switch A 1 connector 1 screw 22 December 1998 SCANNER 5 5 8 SCANNER WIRE A G411R532 WMF G411R533 WMF o E o 5
39. ent table working properly Yes READY G411D503 WMF 2 1 INITIALIZATION 22 December 1998 During power up initialization the scanner performs the following steps refer to the flow chart on the previous page 1 Tests the ROM checksum and makes a RAM read write test If the CPU cannot test these the CPU determines that a memory error has occurred Initializes the VO port E7PROM and gate arrays IPU and memory controller Initializes the scanner motor driver Checks the home position sensor signal timing while moving the scanners If the CPU does not detect a signal change within the specified period it determines that a home position error has occurred Adjusts the difference between the even and odd black levels and total black level 6 Turns the exposure lamp on 7 Adjusts the white level and checks the peak level of the auto gain control If the 10 11 12 13 14 CPU cannot adjust them to the specified levels the CPU determines that a lamp error has occurred If the black level or the white level cannot be adjusted properly during the above initialization process the scanner retries the initialization up to three times If the CPU detects an abnormal condition at the third time step 14 the CPU stores the default values of the black and white levels into the NVRAM on the SCU Checks the ADF interlock switch signal If the CPU detects that the switch is open it determines that an ADF ope
40. er C 1 screw NOTE Remove the ADF right cover by carefully lifting it from the rear 4 Remove the ADF left cover D 1 screw 5 1 COVERS 22 December 1998 5 1 2 ADF COVER Gor m po que ER G411R501 WMF G411R502 WMF Remove the ADF upper and ADF right cover see ADF Exterior Remove the rear cover see Scanner Exterior Operation Panel Open the platen cover vertically see Exposure Glass Remove the spring A Remove the pin B 1 screw Remove the ADF cover C 1 connector 5 2 22 December 1998 COVERS 5 1 3 SCANNER EXTERIOR OPERATION PANEL C D G411R503 WMF jJ Ee iso E E EU 22 Bc 2 G411R504 WMF 1 Remove the operation panel A 1 screw 2 Remove the front cover B 3 screws 3 Remove the left cover C 2 screws 4 Remove the right cover D 2 screws 5 Remove the rear cover E 3 screws 5 3 ADF AND UPPER SIDE 22 December 1998 5 2 ADF AND UPPER SIDE 5 2 1 DOCUMENT SENSOR G411R505 WMF 1 Remove the ADF upper cover see ADF Exterior 2 Remove the document sensor A 1 connector 2 screws 5 2 2 SEPARATION UNIT G411R506 WMF 1 Remove the ADF upper ADF left and ADF right cover see ADF Exterior 2 Remove the separation unit A 3 connectors 4 screws 22 December 1998 ADF AND UPPER SIDE 5 2 3 DOCUMENT TABLE ASSEMBLY A G411R507 WMF 1 Remove the separation unit See Separation Unit 2 Remove the document table
41. inary i Processing E Grayscale correction Filtering Y Auto Photo Letter Sparation G4110500 WMF Dynamic Threshold A suitable threshold value is determined based on the original Auto Photo Letter Separation Generally text areas have strong contrast between the image and the background In photo areas mid range gray areas are common By using these characteristics the original image is separated into text and photo areas Section Area The original image is separated into specified areas Each area is processed using the specified scanning mode Size Detection See Detailed Section Descriptions Scanner Processes 7 2 2 3 4 HS2P G407 G408 G410 G411 Point to Point Diagram ICN2 CN309 olla o o ioo lola lalo Rela Sensor Paper Transport Motor Paper Feed Motor CN105 CN501 CN101 LxueowvoaraorctzoaqsocsoouluoqaQ EoOoSg zo0 0 0no0g000 o0umgs ounxndarcorracmceore olagc cooazz9wweoooonodaa OZEOr uggSesceocgossNTOXa25rz2222 D2ED5 0 ZTELELE SALE LL ZG ZZHIS gt S gt 5 gt 1 EOSEDODEEEESVETTTTTELVOSSSOODOPEOGOBEGEG LS 55 0005S FENG CX lt lt lt ESQ ORES OBO OE E OB OO E SS 23 a Q xu 210 ro 6923 a xo coo c 2 a0gB8222 GQ uz zz id ar t zzzx KERF E zz CN103 3 g 2558 x x XE
42. ion Unit 2 1 sheet Max value 1 000k sheets Exposure lamp on time indication The total illumination time of the lamp is indicated in the same way as above Unit 2 1 hour Max value 3 000 hours CIS on time indication The total illumination time of the CIS is indicated in the same way as above ADF counter indication Reverse side The number of pages scanned in ADF mode is indicated in the same way as above Unit 2 1 sheet Max value 2500 k sheets Endorser character counter indication The number of endorser characters is indicated in the same way as above Counter reset mode After the dip switches are set to on and the Start button is held down for more than 3 seconds all LEDs are turned off all counters which are stored in the EPROM are cleared These counters are the ADF mode book mode exposure lamp CIS and endorser character counters NOTE If you change the position of the SCSI ID rotary switch during these tests be sure to put it back to the original position after you have finished Table A Demonstration Mode SCSI ID Rotary Switch No Contents 0 200 dpi scan in book mode 400 dpi scan in book mode 200 dpi scan in ADF mode 400 dpi scan in ADF mode 200 dpi scan in endorser mode 400 dpi scan in endorser mode 200 dpi scan
43. ioning tools After sliding the scanner to the front and back several times set the positioning tools to check the scanner wire bracket and tension bracket again rpm St o EE o on CA az og ao 21 Reassemble the scanner PCB 22 December 1998 5 6 PCB 5 6 1 SCU RCU IPU A G411R537 WMF 1 Remove the SCU assembly A 2 screws 2 Remove the RCU B 3 screws 3 Remove the IPU C 1 screw NOTE When replacing the SCU put the old ROM IC31 on the new SCU 5 22 22 December 1998 SELF DIAGNOSTICS 6 TROUBLESHOOTING 6 1 SELF DIAGNOSTICS The scanner automatically performs a series of self diagnostic checks each time the power is turned on If an error is detected it is displays the type of error using the four LEDs on the scanner See Detailed Section Descriptions Initialization for more details of the initialization procedure 6 2 CHECK ITEMS 6 2 1 ITEMS CHECKED DURING INITIALIZATION The self diagnostics check the following items at power up 1 The ADF or ADF cover is not closed properly 2 An original is jammed in the ADF 3 There is a problem with the operation of the document table 4 Memory error system error Does the memory in the scanner work properly 5 Home position error system error Have the scanners reached home position properly 6 Exposure lamp error system error Is the standard white level detected properly NOTE e If an error is detected for any of items 4 to
44. lease refer to the scanner user s manual for details 3 2 22 December 1998 ENDORSER UNIT INSTALLATION 3 4 ENDORSER UNIT INSTALLATION 3 4 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty 1e Endorser EID scissa taxa OE ux tes dan 1 2 Solenoid SS Lasse attends eel idus d eS atl hebr eua cdd uda 1 o EDU BOSE iioi ioo EG EO LEO LE DEO LEO ae os 1 N EE ii 1 s 5 Unk Rollet ER enan aa E E ERRE 1 E D DECANE acc Ata xta ER o Tec abia 1 E ASS MO AAA SERE Ou RE SEGE RE bu LOEO EES RE DOE De 2 B Card Spaceto S EE EE EE EE EE tud 1 9 Installation Procedure iese sesse RARR RARR AAR RARR AA RR RR RARR AR RR RR Re 1 3 3 ENDORSER UNIT INSTALLATION 22 December 1998 3 4 2 INSTALLATION PROCEDURE 1 Open the ADF cover A Remove the ADF upper cover B 2 screws ADF right cover C 1 screw and the endorser cover D NOTE Remove the right cover by carefully lifting it from the rear G5141501 WMF 2 Install the spacer E and the EDU board F 2 screws E G5141502 WMF 3 Route the cable G as shown NOTE Ensure that the end of the cable with the large connector H is toward the inside of the machine G5141503 WMF 22 December 1998 ENDORSER UNIT INSTALLATION 4 Install the solenoid assembly I as shown 3 screws G5141504 WMF Installation IK 5 Install the clamp J and
45. lue of the selected digit is indicated by a combination of the four LEDs For the LEDs ON represents a 1 and OFF represents a 0 The four LEDs are read off as a four bit number Example Rotary switch no LED condition 1 units ON OFF OFF OFF 21000 8 2 tens OFF OFF ON ON 0011 3 3 hundreds OFF ON OFF ON 0101 E 4 to 7 OFF OFF OFF OFF 0000 gt gt gt Total counter value 538 sheets 4 5 LEDS TEST POINTS 22 December 1998 4 2 LEDS TEST POINTS 4 2 1 LEDs SCU LEDs Monitored Signal 5VS 5VE CPU clock 4 2 2 TEST POINTS ADU Number Monitored Signal TP301 24 V TP302 12 V TP303 12 V TP304 COM TP305 5VE TP308 45VS TP309 COM 4 3 SPECIAL TOOLS Part Number Part Name A0069104 Scanner Positioning Pin 4 pcs set G4049003 RS 13 Chart A5 G4049005 RS 13 Chart A4 G4049004 RS 13 Chart A3 55 kg G4049006 RS 13 Chart A3 90 kg H2039114 RS 12 Chart A3 4 6 22 December 1998 COVERS 5 REPLACEMENT AND ADJUSTMENT NCAUTION Before starting disassembly be sure to turn off the main switch and disconnect the power cord and interface cable s for safety 5 1 COVERS 5 1 1 ADF EXTERIOR E SE o EE o on CA ES og ao G411R500 WMF 1 Open the ADF cover A Remove the ADF upper cover B 2 screws 3 Remove the ADF right cov
46. mm 17 0 Document size Width 69 298 mm 2 7 11 7 Length 120 2 000 mm 4 7 78 5 All pages in a document must be the same width Document weight 41 128 g m 11 34 lb ADF capacity 150 sheets 64 g m 20 lb 110 sheets 105 g m 24 Ib A4 A5 LT HLT 80 sheets 105 g m 24 Ib A3 DLT Stack height must be less than 15 mm 0 6 Simplex mode Main scan 100 800 dpi in 1 dpi steps Sub scan 100 800 dpi in 1 dpi steps Duplex mode Main scan 100 600 dpi in 100 dpi steps Sub scan 100 600 dpi in 100 dpi steps 8 bits pixel About 15 seconds 0 65 s 200 dpi A4 binary picture mode Simplex mode 55 ppm 200 dpi A4 binary picture mode Duplex mode 86 ipm 200 dpi A4 binary picture mode Counted from the second page SCSI 2 1 102 to 138 V ac 45 to 65 Hz 2 187 to 276 V ac 45 to 65 Hz Standby 50 W Max Scanning 90 W Max Low power mode 12 W Max Standby 80 W Max Scanning 120 W Max Low power mode 12 W Max Simplex model Duplex model SPECIFICATIONS Operating environment Weight Dimensions W x D x H 1 1 2 ENDORSER Number of printable characters Character set Character size Character pitch Printable lines Inking Ink refill Ink color Print position uonoeiq pee4 jueunooq 22 December 1998 Temperature 10 to 32 C 50 to 90 F Humidity 20 to 8096 RH Simplex Model Less than 25 kg 55 1 Ib Duplex Model Less th
47. mp Stabilizer Optional IPU G411D509 WMF For the main function of each PCB refer to the Electrical Component Layout section 2 27 MAIN PCBS AND THEIR FUNCTIONS 22 December 1998 2 8 2 SCU SCANNER CONTROL UNIT Optional IPU RCU SEL Memory Controller SCSI Controller 10B SCSI 1 DRAM 16 Mbit x16 SCSI Terminator SCSI 2 EPROM SRAM E PROM 4 Mbit x16 256 kbit x8 2 kbit CPU SCSI ID Reset IC OSC Rotary sw Image data Signal line G411D512 WMF This is the main board The functions of each component are as follows CPU HD6413002F e Scanner sequence control e Clock timer control e DMA control IPU Image Processing Unit e Shading correction e Image processing Mirror image reproduction ratios MTF correction binary picture processing edge extraction and so on Memory Controller e Stores the image data from the IPU in the memory DRAM 32 Mbytes x 2 e Address control when recalling the data from the memory SCSI controller SCSI interface controller SRAM Work area 32 kbytes EPROM Contains the program Enhanced VO EIO e Extension for the l O port e DIP switches mode selection rotary switches SCSI ID setting and a push switch reset button are connected E PROM Holds the book ADF and lamp counter values 2 28 22 December 1998 MAIN PCBS AN
48. n error has occurred When the endorser unit has been installed the endorser motor turns on for O 1 second Checks the signals from the feed read and feed out sensors If any of them are on the CPU determines that there is a paper jam Checks the document sensor signal If the CPU detects a document on the document table check 13 is not made until the document is removed Checks the document table position sensor signal timing while lifting and lowering the document table See step 8 2 2 22 December 1998 SCANNER MECHANISMS 2 2 SCANNER MECHANISMS 2 2 1 BOOK MODE Overview E A B N i sede oS 2 Su uo aq o a F D G411D521 WMF The exposure lamp a xenon lamp in this model A illuminates the original The image is reflected onto a CCD charge coupled device B via the 1st 2nd and 3rd mirrors and through the lens C The 1st scanner D consists of the exposure lamp a reflector E and the 1st mirror F The exposure lamp is energized by an ac supply to avoid uneven light intensity while the 1st scanner moves in the sub scan direction down the page The entire exposure lamp surface is frosted to ensure even exposure in the main scan direction across the page The light reflected by the reflector is of almost equal intensity in all directions to reduce shadows on pasted originals 2 3 SCANNER MECHANISMS 22 December 1998
49. nd the IOB OK Yes NO Replace the cable Replace the PSU Replace the sensor Is the drive wire OK Yes No Replace it Does 24 volts reach the scanner motor Yes No Is the cable between the motor and the IOB damaged Yes No Replace the IOB Replace the cable Replace the scanner motor 6 12 22 December 1998 TROUBLESHOOTING PROCEDURES SCU Error Symptom 3 3 volts generated on the SCU failed during scanning Possible Cause e Defective SCU Procedure Replace the SCU RCU Error Symptom 3 3 volts generated on the RCU failed during scanning Possible Cause e Defective RCU Procedure Replace the RCU Optional IPU Error Symptom 3 3 volts generated on the optional IPU board failed during scanning Possible Cause e Defective optional IPU board Procedure Replace the optional IPU board 6 13 o o o lt 7 INDICATION WHEN A CONNECTOR IS OUT OF POSITION 22 December 1998 6 5 INDICATION WHEN A CONNECTOR IS OUT OF POSITION 6 5 1 SCANNER G411T500 WMF Connector Scanner LEDs Remarks Green Green Green Red On Off On Off On Off Blinking Blinking Document table error Blinking Blinking Blinking Blinking System error On Off Off On ADF interlock switch open Blinking Blinking Blinking Blinking System error Not used Not used Not used Not used Blinking Blinking Blinking Blinking System error Blinking Blinking Blinking
50. nnectors For connecting the SCSI cables SCSI ID rotary switch Used to select the SCSI ID and to select diagnostic tests Note that positions 8 and 9 are interpreted as SCSI ID 7 Power plug inlet For connecting the power cord ADF cover Open this cover to clear paper jammed at the input side 1 4 22 December 1998 1 2 3 ADF COMPONENT LAYOUT c o LI o Iz G411V502 WMF No Name Function 14 ADF Automatically feeds multi page documents into the scanner 15 Document table QU to be scanned using the ADF are placed ere 16 Document guides Used to properly align the documents placed in the input tray 17 Exit table Receives documents fed by the ADF after scanning 18 Exit table extension This holds the documents output from the ADF it can be extended to support long documents 19 Endorser cover pos this cover to clean the endorser or replace the ink 20 Document support wire If long documents are placed in the input tray this helps to feed them correctly 1 5 DRIVE LAYOUT 22 December 1998 1 3 DRIVE LAYOUT 1 3 1 SCANNER 7 G411V503 WMF Name Function First scanner Moves the exposure lamp along the document and sends the light reflected from the document to the 2nd scanner by means of a mirror Second scanner Moves to keep the distance between the exposure lamp and the CCD constant and sends light reflected from the 1st scanne
51. ntrols the print timing The ink roller always contacts the character belt and always supplies ink to the belt When the ink is used up the customer replaces only the ink roller LOW POWER MODE 22 December 1998 2 7 LOW POWER MODE pid Operation Stand by mode Low power mode G411D525 WMF When the scanner has been idle for 15 minutes this interval cannot be adjusted the scanner automatically enters low power mode However the scanner cannot enter low power mode when a document jam or system error exists NOTE The scanner can enter low power mode if the ADF cover and or platen cover is open or paper remains on the document table When the scanner enters low power mode the PSU cuts the 24 V 12 V 12 V and 5 Vs supplies and continues to supply 5VE only As a result the scanner consumes less than 12 W The operation panel indicates that the machine is in low power mode with the following LEDs LED Status Power on Blinking Machine busy Off Document in place Off Error Off The scanner returns to stand by mode when the ADF cover and or platen cover is opened and closed or when the user places a document on the document table or when a Read command is received from the computer 2 26 22 December 1998 MAIN PCBS AND THEIR FUNCTIONS 2 8 MAIN PCBs AND THEIR FUNCTIONS 2 8 1 BOARD STRUCTURE Endorser Unit Clutches CIS Unit Sensors a i GO oS 2 Su uo aq o a La
52. or error will occur 2 5 SCANNER MECHANISMS 22 December 1998 Optional Steps Optional IPU Board Size Detection If selected this is done after the Initialization step 1 Main Scan Direction Document Width The first scanner moves to the book mode standard position F on the previous page Then the scanner scans 5 mm from the book mode standard position The scanner determines the document width in the main scan direction from the output signal level The edge of the document is detected by the difference between the level of the document data and the background signal which is provided by the silver plate G attached to the platen cover across the main scan If there is a gap at the leading edge such as a tear or a black stripe extending more than 1 mm across the paper and more than 5 mm down the paper the machine cannot detect the document width past this gap In this case an error message may appear and scanning is impossible Disable this feature to allow the machine to scan this document 2 Sub Scan Direction Document Length The scanner detects the document size only in the main scan direction and the scanner driver determines that the document length is the same as for a standard paper size of the same width NOTE The scanner always assumes the paper is in a lengthwise orientation i e the main scan is the short side Also in USA models if Letter width is detected the paper is always assumed to b
53. over A 3 screws A 2 Remove the stopper brackets B 3 Remove the pins C G5141510 WMF 3 8 22 December 1998 RED LAMP UNIT INSTALLATION D 4 Open the platen cover and remove the lamp cover D 2 screws G5141508 WMF c E 2 5 ni Ld o Z 5 Remove the exposure lamp E 1 screw G5141509 WMF 6 Install the red lamp 1 screw 1 connector in the place of the exposure lamp 7 Reinstall the lamp cover the pins the stopper brackets and the rear cover 22 December 1998 DIP SWITCH SETTINGS 4 SERVICE LEVEL FUNCTIONS 4 1 DIP SWITCH SETTINGS The factory default position of the dip switches is indicated in the diagram below After changing a dip switch setting either switch the power off and then on again or press the reset switch G411M500 WMF Item Contents SCAM function OFF SCAM function enabled switch ON SCAM function disabled SCSI synchronous OFF SCSI synchronous transfer enabled transfer switch ON SCSI synchronous transfer disabled Internal SCSI OFF Internal SCSI terminator on terminator switch ON Internal SCSI terminator off a EENEN y 2 3 1 zZ 456789 Do not adjust switch 4 This is for factory use only Service level test modes Various tests for the scanner are carried out using dip switches 5 to 8 Within each test mode tests are select
54. r to the CCD Scanner drive wires Transmit motor power to the 1st and 2nd scanners Wire springs Tighten the scanner drive wires Motor belt Transmits motor power to the scanner drive wires Scanner motor Drives the scanners Pulleys Hold the scanner drive wires 1 6 22 December 1998 1 3 2 ADF DRIVE LAYOUT c o LI o Iz 13 G411V507 WMF No Name Function 8 Feed roller Feeds the top page of the original into the ADF 9 Pick up roller Picks up and transports the top page of the original on the document table 10 Separation roller Stops the lower pages of the original while allowing the top one to pass 11 White roller Allows the machine to correct for variations in the white Duplex model only level of the CIS 12 Feed out rollers Feed the scanned original onto the exit table 13 Paper transport drum Transports the original to the scanning position 14 Paper transport rollers Hold the original against the paper transport drum 1 7 ELECTRICAL COMPONENT LAYOUT 22 December 1998 1 4 ELECTRICAL COMPONENT LAYOUT 1 4 1 SCANNER G411V504 WMF No Name Function 1 Home position sensor Detects whether the first scanner is at the home position 2 SCU Controls the overall scanner function 3 Lamp Stabilizer Provides ac power to the exposure lamp 4 SBU Contains the CCD and outputs a video signal to the SCU 5
55. rum through the read sensor H While the original passes over the ADF scanning position J the scanner K reads the original After reading the original goes to the exit table N The feed out sensor M detects whether the original is fed out or not The relay sensor L detects when an original is jammed in the area between the read sensor and the feed out sensor This sensor is monitored at all times except when the ADF is feeding a document 2 7 SCANNER MECHANISMS 22 December 1998 Basic Scanning Procedure When the scanner receives the ADF scanning command the scanner scans the original as described below 1 ADF Mode The scanner performs the home position check and the shading process If a home position error is detected the scanner K will stop immediately If an ADF cover open error or memory error is detected the scanner will stop after returning to the home position The first carriage moves to the ADF scanning position J from the scanner home position I Then the paper transport motor starts 2 SADF Mode The scanner waits until the designated time for the originals to be placed on the document table A When the originals have been placed on the document table the same procedure as for ADF mode is carried out 2 8 22 December 1998 SCANNER MECHANISMS Document Table Lift N i sede oz gg Su uo a o a G411D518 PCX The lift mechanism consists of the document table lift clutch
56. s pointing up and the spring is at maximum compression As sheets of the document are scanned the spring pushes the document table upwards so that the top of the stack is always against the pick up roller When all pages of the original have been fed out of the ADF the document table lift clutch and paper feed motor are energized to lower the tray They turn off when the document table sensor is deactivated If the sensor is not deactivated within the designated time a document table error will occur 2 10 22 December 1998 SCANNER MECHANISMS Original Feed and Separation a i GO oz v 2 Su uo aq o a A B G411D520 WMF To feed the original the paper feed motor and the paper transport motor which drives the paper transport drum turn on The paper feed motor drives the pick up roller A through a train of gears and the pick up clutch B The pick up clutch turns on to feed the top sheet of the original If the pick up roller feeds multiple pages of the original the separation roller C and the feed roller D separate these pages the separation mechanism is friction based When the leading edge of the original activates the feed sensor E the paper feed motor and the pick up clutch turn off then the paper transport drum F feeds the original to the scanning position Image Scanning The scanner starts to scan the image when the leading edge has passed the read sensor by a certain distance me
57. sition error check 2 Exposure lamp error check White level error check Document table error check SCU error check RCU error check IPU error check CIS LEDs error check Memory error check DY ADRES IS 9 If the scanner detects errors the first error that occurred is indicated by a combination of four LEDs LEDs Error Items Power On Machine Document in Error Green Busy Green Place Green Red SCU error Blinking Blinking RCU error Blinking On Blinking IPU error Blinking On Blinking Home position error Blinking Blinking Blinking On Exposure lamp error Blinking Blinking On On White level error Blinking Blinking CIS Leds error Blinking Blinking Blinking Memory error Simplex Blinking Memory error Duplex Blinking On LED on Blinking LED blinking LED off Table E Counter Indication Mode Rotary Switch Table SCSI ID Rotary Switch No Contents 0 Not used 1 Units 2 Tens 3 Hundreds 4 Thousands 5 Ten thousands 6 Hundred thousands 7 Millions 8 Not used 9 Not used 4 4 22 December 1998 DIP SWITCH SETTINGS LED Indication Table LEDs Counter Value Power On Machine Busy Document in Green Green Place Green On On On OO CO NOOP PO On LED on LED off Use the rotary switch to select a digit of the counter The va
58. t e Defective pick up clutch e Defective ADU e Defective SCU e Defective feed sensor Procedure Does the pick up roller mechanism work Yes No Is 24 volts supplied to the pick up clutch Yes No Is the cable damaged Yes No Replace the ADU Replace the cable Is there an open circuit in the clutch Yes No Replace the SCU Replace the pick up clutch Does the jam happen at the separation unit Yes No Replace the pick up roller Replace the separation unit o o o lt 7 6 5 TROUBLESHOOTING PROCEDURES 22 December 1998 Document Table Error Symptom The problem cannot be solved with the procedures in the user s manual Possible Causes e Defective document table position sensor e Defective document table clutch e Defective paper feed motor e Defective ADU e Defective SCU e Damaged document table Procedure Is the document table itself OK Yes No Replace it Does the table work up down operation Yes No Does the separation roller mechanism work Yes No Does 24 volts come to the paper feed motor Yes No Is the cable damaged Yes No Replace the ADU If the 24 volts from the PSU is defective another error will be generated Replace the cable Replace the motor if it has a defective Does the document table lift clutch work Yes No Does 24 volts come to the document table lift clutch Yes No Is the cable damaged Yes No Replace the ADU Replace the cable Replace the document ta
59. the feed out position 22 Document sensor SHE when a document is placed on the document able 23 ADU Controls the mechanical parts of the ADF 24 Document table position Detects if the document table is at the feed position or sensor not 25 Pick up clutch Controls pick up roller rotation 26 Document table lift Switches on to lift the document table up or down clutch 1 9 22 December 1998 INITIALIZATION 2 DETAILED SECTION DESCRIPTIONS 2 1 INITIALIZATION Power on Is the memory OK No Yes Initialize the VO port E PROM IPU and memory controller Initialize the scanner motor Is the home position check OK No C ur X Yes Adjust the black level Turn on the lamp Scan the white plate UO Is the white level within specified value Were there any shading or lamp errors Are the ADF or the document feeder cover closed No Yes Endorser motor turns on for 0 1s Is any one of the feed read or feed out sensors on Yes No Is there any paper on the document table No Yes Detects document User Level System error Service Level Memory error n c GO 2s os S 88 o a Home position error Lamp error Yes initialization procedure been tried three times Use the default value of the white and black levels ADF open error B Document table error Is the docum
60. tios expressed in the driver as dpi 100 200 300 400 500 and 600 dpi This is because there is not enough memory to buffer the data and calculate the pixels for the resulting image at other resolutions without stopping the scanner 2 22 22 December 1998 REVERSE SIDE SCANNING 2 5 3 IMAGE SCANNING Shading 8 i IPU Correction Even f Memory Controller SGSI Analog HA Processing AD Circui G411D504 WMF RCU Memory Controller Shading Magnification TM Dither White black correction Mirror Process Filtering correction Error Diffusion Binary Process conversion G411D526 WMF As explained on the previous page the CIS unit contains five CCDs The analog signal from each CCD goes to an analog processing IC The function of the analog processing circuit is the same as for the SBU After this the analog signal is converted to a digital signal by the A D converter Then the data goes to the shading circuit for correction After shading the data is divided to two signals Odd and Even Then these go to the IPU on the RCU board The RCU board contains the IPU and memory controller ICs for image processing The image processing in the IPU is the same as for the IPU in the SCU except for the shading correction After image processing the data goes to the PC through the SCSI controller on the SCU 2 23 a i Do oc v 2 S
61. u uo aq o a ENDORSER UNIT 22 December 1998 2 6 ENDORSER UNIT 2 6 1 OVERVIEW A G411D516 WMF D G411D514 WMF The endorser unit A is located just before the exit roller B The endorser unit prints up to 19 characters which are input using the scanner driver at the trailing edge of the document The endorser operates as follows 1 The user inputs characters and enables the endorser function using the scanner driver 2 The scanner operates in the normal ADF mode 3 The paper transport motor stops at a certain time after the leading edge of the paper passes through the feed out sensor 4 The endorser motor turns on 5 The endorser solenoid C is energized and the paper holding plate D goes down to hold the original 6 The endorser prints the characters 7 After printing the endorser motor turns off 8 The endorser solenoid is de energized and the paper holding plate goes up to release the original 9 The paper transport motor turns on again and the original is fed to the original tray 22 December 1998 ENDORSER UNIT 2 6 2 ENDORSER UNIT N i sede oz gg Su uo a o a E G411D515 WMF The endorser unit consists of the endorser motor A clutch B character belt C hammer unit D and ink roller E The endorser motor drives the character belt and hammer unit and operates the hammer F The clutch co
62. usted e The black level cannot be adjusted e The white level cannot be adjusted Possible Causes e A mirror is out of position e Misalignment e Defective SCU e Defective SBU e Defective exposure lamp e Dirty white plate Procedure Is there any problem with the exposure lamp Yes No Is the white plate dirty Yes No Are all the mirrors installed properly Yes No Reseat the mirror Does the SBU generate the correct signals Yes No Replace the optical unit Replace the SCU Replace the ADF exposure cover Replace the exposure lamp NOTE The read signal goes to the SCU through the IOB but the IOB does not do any image processing Therefore the IOB probably does not have a problem However if the problem is not solved even after replacing the SCU try changing the IOB o o o lt 7 6 11 TROUBLESHOOTING PROCEDURES 22 December 1998 Home Position Error Symptom This error is detected when the home position sensor cannot detect the first scanner Possible Causes Defective scanner motor e Damaged cable between the scanner motor and the IOB e Defective IOB e Defective home position sensor e Damaged cable between the home position sensor and the IOB Procedure Does the home position sensor work Check it with sensor test mode See See Service Level Functions Dip Switch Settings Yes No Does 5 volts reach the sensor Yes No Is the cable between the home position sensor a
63. zoo 900 Za xz END 1 4 x x x 2 5 GND END 3 6 GND Ede 4 7 GND OND 5 8 GND NS 6 9 GND ove 7 10 GND ye 8 11 GND 9 12 NC XFESN 10 13 NC SM 11 ia NC KSIL 12 15 GND EMEN 13 16 GND id cs 14 17 GND n 15 18 GND noe 16 19 GND MTON 17 20 GND MEME 18 21 GND ene 19 a END XTMRST x w 23 GND ER 21 24 GND XIMREFS 22 25 ono TMMODE1 z 9 26 oso XLUPSN 2 a 27 DB PSUOFF 25 Fas ps2 XDSET 2 29 DB3 AO 27 30 DB4 E E SU DE XSTART 2 32 pB6 BOSE 30 33 DB7 EER 31 34 DBB SMMODET 32 35 GND ae 33 NC 36 GND 5VE XSMREF1 38 TERMPWR CND 36 39 NC ND 37 40 GND XSSCAN 38 41 XATN ru Ed 39 42 GND XRDSYNE 40 43 xBSY ND 41 44 XACK 42 45 XRST ene 43 ee css E 48 XCD apos 46 ADEG 33 vo CN102 38Pin ADO4 4 7 ADE4 GND 2 GND 30 CN701 CN104 pus 52 1 1 ADE 53 gt GND ADOO 3 2 2 co ADEO E Er WE ve 56 5VE 5VE XAOS AND 29 XAWKD 5 GND gs 8l 8 8 xawkb 7 SCU RSCU GND E 3 3 xawrer GND A 19 XALG GND 2 12 T25 XARCLK END B4 ds 13 GND 5VS 55 14 14 66 15 ARO Sve 7 an XARKDIS sisn LS E 185 XARKD 7 XPESN 5n 20 20 SESopu XEN PECL a2 al 21 XRESET TMON n 22 Zr A XPRASOL a E 23 AG FMCLK1 T5 24 24 A 76 25 A 5 FMCLK3 z 2 28 Am XFMREF1 Z E 26 A9 XFMREF2 B A ait TMMODE2 2 D 9 TMCLK 23 gt D t XTMREF1 a 9 531p piis anes as 32p XDIPUINST XJMSN E ES 33 GND XPWON ES 34 GND XBUSY ES se emo E 37 37 89 3 sve SMCLK 8 5VE SMCWB

Service Manual: HS2P series (G407/G408/G410/G411), IS450S

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