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S900

7-9

7.3.7 MAIN CONTROL BOARD ASSEMBLY

(1)

Turn the machine over to reveal the bottom. Loosen the fixing screws of the metal cover from the
bottom housing.

(2)

Raise the main board to disconnect the cables.

(3)

Loosen all flat cables.

(4)

Loosen the fixing screws of the SCSI connector with proper tool.

Metal Cover

Flat Cable

Fixing Screws

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Содержание S900

Страница 1: ...S900 Service Manual 031103A...

Страница 2: ...VIEW 3 1 3 1 2 REAR VIEW 3 2 4 THEORY OF OPERATION 4 1 INTRODUCTION 4 1 4 1 INTRODUCTION 4 1 4 2 MAIN CONTROL UNIT 4 1 4 2 1 SYSTEM DIAGRAM 4 2 4 2 2 MAIN CONTROL CIRCUIT 4 3 4 2 3 VIDEO CIRCUIT 4 4...

Страница 3: ...ES ON DISASSEMBLY 7 4 7 3 2 DOCUMENT COVER 7 4 7 3 3 CONTROL PANEL 7 5 7 3 4 UPPER HOUSING 7 6 7 3 5 DOCUMENT COVER SENSOR PCBA 7 7 7 3 6 PAPER SENSOR PCBA 7 8 7 3 7 MAIN CONTROL BOARD ASSEMBLY 7 9 7...

Страница 4: ......

Страница 5: ...sure the power supply cord of the S900 is disconnected from the power outlet Under any circumstance do not remove from or install the PWBs or connectors onto the S900 with the power switch turned ON...

Страница 6: ...nal Connection 1 IEEE 1394 to connect to printer to make copies 2 USB 2 0 to connect to PC to scan 3 RJ 45 Network connection to update printer profile and firmware 4 ADF port to connect to auto docum...

Страница 7: ...1 mm 11 19 x 16 97 Multiple Copies Up to 99 Copy Mode Speed FineText Photo Enlarge Reduce Whole Page 93 25 400 in 1 increment decrement Pre set Scales Copy Features Paper Size Auto Detection A4 Landsc...

Страница 8: ......

Страница 9: ...he document holding pad with clips or staples Do not use a wall socket on the same circuit as devices that may generate noise for example an air conditioner etc Only use the DC adapter model name ADP...

Страница 10: ...ocument Feeder optional 5 IEEE1394 cable for printer connection 2 S900 main unit 6 Power adapter 3 USB cable for computer connection 7 Cross cable 4 CD service tool 8 Power Cord US UK Europe Australia...

Страница 11: ...o unlock the scan unit Locked Unlocked Note If you need to move your S900 for repair or any other reason be sure to lock your S900 before moving To lock your S900 1 Turn off your S900 2 If the scannin...

Страница 12: ...LE 1 Connect one end of the IEEE 1394 cable included to your printer 2 Connect the other end to the printer port of your S900 2 3 3 CONNECTING THE ADF CABLE OPTIONAL Connect the ADF cable which is att...

Страница 13: ...Tray 3 Pull out the ADF Tray extension to its full length 2 3 5 CONNECTING THE POWER AND TURNING ON THE MACHINE 1 Press the power switch to the 0 position to turn off your S900 2 Connect the small en...

Страница 14: ...If you need to copy multiple pages please load your papers in the ADF The ADF can hold up to 50 pages at one time If you need to send pages from books newspaper clippings paper with wrinkles or curls...

Страница 15: ...ument s can range in size from 4 5 by 5 5 inches to 11 69 by 16 54 inches A3 Document s can range in weight from 14 to 28 lb 0 002 to 0 006 Document s should be square or rectangular and in good condi...

Страница 16: ...es to center the document s in the ADF 2 5 TRANSPORTATION To move the S900 from where it is installed for repair or any other reason make sure to observe the following conditions 1 Turn off the power...

Страница 17: ...S900 3 1 3 PARTS IDENTIFICATION 3 1 External View 3 1 EXTERNAL VIEW 3 1 1 FRONT VIEW 1 Document Cover 2 Control Panel 1 2...

Страница 18: ...S900 3 2 3 1 2 REAR VIEW 1 Printer Port 2 Service Port 3 USB Port 4 ADF Port 5 Power Jack 1 2 3 4 5...

Страница 19: ...rocessor where the signals are turned into digital signals These digital signals flow to the image processor and store into the CPU Central Processing Unit Through the commands from the Control Panel...

Страница 20: ...ck diagram Figure 5 2 System block diagram Image Processor Main Board Control Section Optical Unit Lamp Unit Inverter Power Adapter LCD Display Control Panel 24V To Printer CPU ADF IEEE 1394 Controlle...

Страница 21: ...external ROM a 128MB external RAM working area I O Address Maps ROM Area Flash Layout Loader System Firmware Scanner Firmware Printer Profile External RAM Working Area 256KB 256KB 0x1E000000 0x1E0FFF...

Страница 22: ...hift Gate 8 HMSEN Home Sensor 9 GND Digital Ground 10 PH2 Motor Phase One 11 PH1 Motor Phase One 12 GND Digital Ground 13 CLAMP CCD Clamp Gate 14 RS CCD Reset Gate 15 B W_SW CCD Color and B W Switch 1...

Страница 23: ...all the necessary circuitry to perform three channel conditioning and sampling The signal chain consists of three channel correlated double sampling CDS and programmable gain adjustment of the CCD out...

Страница 24: ...4 9 KPDATA5 Data Bus bit 5 10 D G Digital Ground 11 KPDATA6 Data Bus bit 6 12 KPDATA7 Data Bus bit 7 13 D G Digital Ground 14 VCC Digital Power Supply 15 VCC Digital Power Supply 16 VCC Digital Power...

Страница 25: ...motor is detected by photo sensor The photo transistor transmission to the photo sensor receiver circuit is shown below Figure 5 3 Home position sensor The home position is detected when the carrier...

Страница 26: ...low Figure 5 5 Paper size sensor 4 2 6 SUB POWER SUPPLY CIRCUIT The sub power supply circuit is provided for the internal analog circuit The circuit configuration is shown below The sub power supply i...

Страница 27: ...ase see Table 5 1 for details Table 5 1 Power Adapter Type Characteristic Wall mount Input voltage range 100 240V Input current max 1 4A Input frequency 50 60Hz Max in rush current 115VAC cold start 4...

Страница 28: ......

Страница 29: ...relevant units and maintenance methods are described below When a problem occurs troubleshoot the problem according to the symptoms it shows Check the following first 1 Is anything operating improperl...

Страница 30: ...ROUBLESHOOTING FLOWCHART 5 1 1 POWER ON TO S900 READY Figure 5 1 Power on to S900 ready Power on LCD shows Booting Up Message No Yes See Table 5 1 Wait for command from control panel or PC LCD shows C...

Страница 31: ...hart Copier online troubleshooting Check printer online Scanning performed Printing completed Image not clear Noises generated END No Yes Yes Yes Yes Yes No No Yes No No See Table 5 2 See Table 5 3 Se...

Страница 32: ...00 5 4 5 1 3 CONTORL PANEL OPERATION Copier online troubleshooting LCD shows message Value setting Wait for key pressing No Yes Yes END No See Table 6 7 Figure 5 3 Control panel operation See Table 5...

Страница 33: ...le 5 1 The LCD does not display Table 5 2 Printer does not react Table 5 3 Optical path or hardware problem Table 5 4 Printer does not print Table 5 5 Image not clear Table 5 6 Noise generated Table 5...

Страница 34: ...in control PCB Tester check 24V GND Remove the cause or replace the PCB LCD module main board connection failure LCD module main board Visual check Plug the connector and secure it firmly 5 2 2 PRINTE...

Страница 35: ...an Module Visual check Replace the Scan Module 5 2 4 PRINTER DOES NOT PRINT Table 5 4 Cause Relevant Unit Check Method Maintenance Method Printer select wrong Printer Visual check Make sure the printe...

Страница 36: ...r or replace the toner Printer memory not enough Printer Visual check Add printer memory 5 2 6 NOISE GENERATED Table 5 6 Cause Relevant Unit Check Method Maintenance Method Motor unit failure Motor un...

Страница 37: ...ES NOT SHOW MESSAGE AFTER COMMAND Table 5 7 Cause Maintenance method LCD module cable failure Attach the LCD module cable and secure it firmly LCD problem Replace the LCD module Push button failure Re...

Страница 38: ...Plug the connector in Network cable is damaged Replace the cable For your information the assigned IP address for S900 and your computer should be S900 s IP address Subnet mask Gateway 192 168 1 1 25...

Страница 39: ...ome sensor error Restart your S900 unit If the code still appears contact your dealer 10007 Lamp error Restart your S900 unit If the code still appears contact your dealer 10009 Paper jam ADF Open the...

Страница 40: ...try again If the code still appears contact your dealer 20031 20039 Printer Profile Error Check printer profile version and printer model name Update printer profile If the code still appears contact...

Страница 41: ...S900 5 13 5 3 CLEARING THE PAPER JAM 1 Press the push button on the ADF front cover and open the cover to the left 2 Gently pull out the jammed paper 3 Close the ADF cover ADF Push Button Document...

Страница 42: ......

Страница 43: ...ed with ink toner particles or paper coatings In this case the S900 will have to be cleaned frequently to ensure the best performance Follow the cleaning procedure as below 1 Open the document cover 2...

Страница 44: ......

Страница 45: ...maintenance of this equipment No Name Description 1 Standard screwdriver Idler pulley module screw 2 Philips screwdriver magnetic Nominal No 2 M3 M4 3 Oil Shell Terrace Oil 46 4 Grease Shell Alvania...

Страница 46: ...is indicated in numbers 2 Lubricant type A Shell Alvania Grease No 2 B Shell Terrace Oil 46 3 Amount of lubricant C Coat thinly uniformly 4 Lubrication cycle Y Every year Table 8 2 below shows the pos...

Страница 47: ...S900 7 3 Positions need to be lubricated 2 Sliding Rod 1 Sliding Guide...

Страница 48: ...assembled 4 Store the disassembled parts in a clean place to avoid loss 5 After replacement check the contacts and spare part mounting 6 Assemble the parts in reverse order of disassembly procedure 7...

Страница 49: ...nit as shown below Remove the three fixing screw of the control panel 3 Lay down the main unit Loosen the Control Panel PCBA Assembly by lifting it up Disconnect the flat cable 4 Remove the fixing scr...

Страница 50: ...control panel 4 Remove the bottom housing of the control panel by detaching the hook 5 Loosen the fixing screws at the rear and lift the upper housing gently to remove it Note 1 Before reinstalling t...

Страница 51: ...section 7 3 2 2 Remove upper housing as described in preceding section 7 3 4 3 Move the optical chassis to the center as illustrated below 4 Loosen the fixing screw to remove the paper sensor PCBA Opt...

Страница 52: ...S900 7 8 7 3 6 PAPER SENSOR PCBA 1 Remove upper housing as described in preceding section 7 3 4 2 Loosen the fixing screw to remove the paper sensor PCBA Fixing Screw...

Страница 53: ...to reveal the bottom Loosen the fixing screws of the metal cover from the bottom housing 2 Raise the main board to disconnect the cables 3 Loosen all flat cables 4 Loosen the fixing screws of the SCS...

Страница 54: ...the optical chassis to the center as illustrated below 3 Loosen the fixing screw of the belt to detach the left end of the belt 4 Remove the other end of the belt from the hook Note During the reinst...

Страница 55: ...upper housing See section 7 3 4 2 Remove the main control PCBA See section 7 3 5 3 Remove the motor belt See section 7 3 6 4 Remove the fixing screws of the sliding rod then pull it out gently as ill...

Страница 56: ...Note 1 While reinstalling the optical chassis be careful not to touch the chips of the CCD board as well as the lamp in the optical chassis 2 While reinstalling the CCD flat cable be sure the text of...

Страница 57: ...1 Remove the optical chassis See preceding section 7 3 7 2 Remove the fixing screw of the cover 3 Disconnect the CCFL inverter cable and CCFL inverter PCBA cable CCFC Inverter PCBA removal Optical Cha...

Страница 58: ...1 LAMP ASSEMBLY 1 Remove the optical chassis See section 7 3 7 2 Disconnect all cables of the lamp assembly 3 Detach the lamp from the lamp holder Lamp Assembly Lamp Assembly Optical Chassis Lamp asse...

Страница 59: ...7 and 7 3 8 2 Remove the lamp assembly See preceding section 7 3 9 3 Loosen the fixing screw to remove the motor mount as shown in the figure below 4 Loosen the fixing screw and disconnect the motor...

Страница 60: ......

Страница 61: ...S900 8 1 8 PARTS 8 1 Spare Parts List 8 1 SPARE PARTS LIST Please find the following spare parts list and its illustration...

Страница 62: ...S900 8 2...

Страница 63: ...S900 8 3...

Страница 64: ...Y PAPER SENSOR 1 7 100 S PARTS POWER SWITH SOCKET W CORE PITCH2 5 L 200 1 8 50420801 200 S PARTS ASS Y SENSON BOARD SB11 V5000 SERIES 1 9 2 50229401 010 S PARTS ASS Y CONTROL PANEL 428x104x31 US A3 OK...

Страница 65: ...BLE 1 D 010 CD OKI S900 1 E 56638901 010 S PARTS CROSS CABLE INTERNET CABLE 8P 4C 1 8M 1 F 010 CARTON 710x280x680 OKI S900 1 G 010 ACCESSARY BOX 245x220x60 B F DS8000C 1 H 1 100 EPS FOAM B 690x258x150...

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