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MODEL L1A/L1B (Machine Code: H911/H912) SERVICE MANUAL 10 October, 2002 Subject to change...
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PRECAUTIONS To avoid personal injury or damage to the machine during servicing, please read through the following manual carefully. SAFETY PRECAUTIONS 1. Safety Precautions There are some electric or machinery parts with safety related properties. Replacement parts may not operate safely if they differ from the original parts. Parts that allow higher voltages that the original should not used.
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PRECAUTIONS ON DISASSEMBLY AND REASSEMBLY Precautions should be taken when replacing parts. Before replacing any parts, please check all cables. All cables must be replaced to their original position on the machine. Please use the following procedure before disassembling or replacing parts. 1.
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ESD PRECAUTIONS Certain semiconductor devices can be easily damaged by static electricity. Such components are commonly called “Electrostatically Sensitive (ES) Devices”, or ESDs. Examples of typical ESDs are: integrated circuits, some field effect transistors, and semiconductor “chip” components. The techniques outlined below should be followed to reduce the chance that components will be damaged by static electricity.
10 October, 2002 PREVENTATIVE MAINTENANCE 2. PREVENTATIVE MAINTENANCE The outline below is a recommended guideline for maintenance. Environmental conditions and actual use will vary these factors. The cycle period given below is for reference only. Component Cleaning Cycle Replacement Cycle Done By ADF Rubber Plate As Needed...
10 October, 2002 GENERAL PRECAUTIONS ON DISASSEMBLY 3. DISASSEMBLY AND REASSEMBLY 3.1 GENERAL PRECAUTIONS ON DISASSEMBLY Extreme caution should be used when disassembling and reassembling components. As the cables in this machine are located very close to moving parts, proper routing a must. After components have been removed, any cables that have been displaced during the procedure must be restored as close as possible to their original positions.
OPE COVER (ALSO KNOWN AS OP-PORT) 10 October, 2002 OPE COVER (ALSO KNOWN AS OP-PORT) 1. Pull the cover release button on both sides of the machine, and open the front cover. H911R904.WMF 2. Remove the two stoppers holding the front cover unit and unplug one connector and one wire.
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10 October, 2002 OPE COVER (ALSO KNOWN AS OP-PORT) 4. Remove both screws securing the bracket scan board. Remove the bracket scan board. 5. Unplug both connectors and the single wire from the scan board. Bracket Scan Board H911R907.WMF 6. Lift the OPE cover. H911R908.WMF...
WHITE ROLLER 10 October, 2002 7. Remove the stopper holding the OPE cover. H911R909.WMF 8. Unlatch the bottom ends, then remove the OPE cover. H911R910.WMF 3.3 WHITE ROLLER 1. Open the OPE cover. (☛ 3.2) 2. Push the bushing on the end of the roller slightly inward, and then rotate it Bushing until it reaches the slot.
10 October, 2002 ADF RUBBER PLATE 3.4 ADF RUBBER PLATE 1. Open the OPE cover. (☛ 3.2) 2. Insert a flat blade screwdriver and pin Holder set into the slot as shown and release Rubber the latches. Take out the Holder Rubber, Sheet ADF and the Rubber ADF.
OPE BOARD 10 October, 2002 3.5 OPE BOARD 1. Before removing the OPE board, you should remove: – OPE cover (☛ 3.2) 2. Remove the four screws securing the OPE board. 3. Release both latches securing the LCD as well the two of four latches securing the board.
10 October, 2002 LEVER SENSOR SCAN (ALSO KNOWN AS S2 SENSOR) 3.7 LEVER SENSOR SCAN (ALSO KNOWN AS S2 SENSOR) 1. Push both sides of Lever Sensor Scan inward. 2. Unlatch and take out the Lever Sensor Scan from the scan upper frame. H911R916.WMF 3.8 SCAN BOARD 1.
SCAN MOTOR (ALSO KNOWN AS TX MOTOR) 10 October, 2002 3.9 SCAN MOTOR (ALSO KNOWN AS TX MOTOR) 1. Before disassembling the Scan Motor, you should remove: – OPE cover (☛ 3.2) – Bracket Scan Board (☛ 3.2) 2. Unplug the single connector from the scan board. 3.
10 October, 2002 ADF ROLLER 3.10 ADF ROLLER 1. Before removing the ADF Roller, you should remove: – OPE cover (☛ 3.2) 2. Remove both screws securing the Guide Paper guide paper and remove the guide paper. H911R920.WMF 3. Remove the ADF Roller from the scan front frame.
10 October, 2002 3.11 CIS 1. Remove the single screw. 2. Push the CIS as shown. H911R922.WMF 3. Separate the CIS from CIS Ass’y. tape H911R923.WMF 3.12 REAR COVER 1. Remove both screws. 2. Push the metal clip on the parallel port down and remove the rear cover from the main frame.
10 October, 2002 TOP COVER 3.13 TOP COVER 1. Before removing the top cover, you should remove: – OPE cover (☛ 3.2) – Rear cover (☛ 3.12) 2. Remove both screws securing the top cover from the backside of the machine.
PAPER TRAY 10 October, 2002 3.14 PAPER TRAY 1. Before removing the Paper Tray, you should remove: – OPE cover (☛ 3.2) – Rear cover (☛ 3.12) – Top cover (☛ 3.13) 2. Remove the tray from the main frame. H911R927.WMF 3.15 LSU (ALSO KNOWN AS LASER UNIT)
10 October, 2002 TRANSFER ROLLER 3.16 TRANSFER ROLLER 1. Pull the cover release button on both sides of the machine, and open the front cover. 2. Lift the transfer Roller using a suitable tool (Screw Driver) and take out the Roller. H911R930.WMF 3.17 ENGINE BOARD 1.
10 October, 2002 COOLING FAN 3. Remove three screws securing the Motor Ass’y, then remove the Motor Ass’y. NOTE: When reassembling the Motor Ass’y, make sure that the boss (shown in the figure) fits into the corresponding screw holes on the Motor Ass’y. This will allow the screws to be fastened properly.
GEAR PICKUP ASS’Y 10 October, 2002 3.24 GEAR PICKUP ASS’Y 1. Before removing the Gear Pickup Ass’y, you should remove: – OPE cover (☛ 3.2) – Rear cover (☛ 3.12) – Top cover (☛ 3.13) NOTE: When reassembling, make sure that the direction of the gear is correct.
10 October, 2002 HVPS BOARD (ALSO KNOWN AS POWER PACKER) 3.26 HVPS BOARD (ALSO KNOWN AS POWER PACKER) 1. Before removing the HVPS board, you should remove: – OPE cover (☛ 3.2) – Rear cover (☛ 3.12) – Top cover (☛ 3.13) 2.
FUSING UNIT ASS’Y 10 October, 2002 3.28 FUSING UNIT ASS’Y CAUTION The fusing unit is assembled with tapping screws. Assembly/disassembly should be kept to a minimum. Repeated adjustments may cause failure. To avoid hazardous situations, do not replace any components inside the fusing unit such as thermistor, hot roller, stripper pawls, fusing lamp, etc..
10 October, 2002 PRESSURE ROLLER 3.29 PRESSURE ROLLER 1. Before removing the pressure roller, you should remove: – OPE cover (☛ 3.2) – Rear cover (☛ 3.12) – Top cover (☛ 3.13) – Fusing Unit Ass’y (☛ 3.28) 2. Lift and remove the pressure roller from the main frame.
SHIELD ENGINE ASS’Y 10 October, 2002 3.31 SHIELD ENGINE ASS’Y 1. Before removing the Shield Engine Ass’y, you should remove: – Rear cover (☛ 3.12) 2. Set the machine on its left side as shown in the illustration. 3. Remove six screws securing the Shield Engine Ass’y.
10 October, 2002 MONITOR SPEAKER 3.33 MONITOR SPEAKER 1. Before removing the speaker, you should remove: – Rear cover (☛ 3.12) – Shield Engine Ass’y (☛ 3.31) – SMPS board (☛ 3.32) 2. Remove the single connector that connects the speaker to the main board as well as both screws securing the speaker.
SENSOR BOARD 10 October, 2002 3.35 SENSOR BOARD 1. Before removing the sensor board, you should remove: – Rear cover (☛ 3.12) – Shield Engine Ass’y (☛ 3.31) 2. Release the four snap-fits securing the sensor board and unplug the single connector from the main board.
10 October, 2002 ACTUATOR EMPTY/FEEDER 3.37 ACTUATOR EMPTY/FEEDER (ALSO KNOWN AS actuator paper end/paper feed sensors) 1. Before removing the actuator empty/feeder, you should remove: – Rear cover (☛ 3.12) Holder Feed Ass'y – Shield Engine Ass’y (☛ 3.31) 2. Remove the single connector from the main board and both screws securing the holder feed Ass’y.
ROLLER FEED (ALSO KNOWN AS PAPER FEED ROLLER) 10 October, 2002 3.38 ROLLER FEED (ALSO KNOWN AS PAPER FEED ROLLER) 1. Before removing the roller feed, you should remove: – OPE cover (☛ 3.2) – Rear cover (☛ 3.12) – Top cover (☛ 3.13) –...
Standard: More than 3 digits. 2. Electronic Scale Standard: Equipment for checking the weight of consumables (toner cartridge) supplied by Ricoh Electronics. (The gram unit can be measured.) 3. Screw Drivers Standard: “–” type, “+” type (M3 long, M3 short, M2 long, M2 short).
DIAGNOSTICS 10 October, 2002 4.2 DIAGNOSTICS This section describes methods and procedures to isolate the cause of a malfunction in the machine. This machine displays all diagnostic information on the LCD. In addition, it can perform a series of tests that allow the machine to observe individual machine functions.
10 October, 2002 PRINT QUALITY Error Message Description Solution The remote fax machine you want The remote operator should to poll is not ready to respond to know in advance that you are your poll. Or when setting up to poll polling and have their fax unit POLLING ERROR another fax machine, you have...
NOTE FOR REPLACING MAIN BOARD 10 October, 2002 4.4 NOTE FOR REPLACING MAIN BOARD When you replace the main board with a new one, the information on the toner state is cleared. Therefore, you should update the information to the new board by entering the exact value of total toner count and specifying the toner cartridge installed currently is shipped with the machine or new.
10 October, 2002 TROUBLESHOOTING FLOW CHART 4.5 TROUBLESHOOTING FLOW CHART 4.5.1 VERTICAL BLACK LINE BAND OK after replacing obstacles on the AIO Replace the AIO AIO? blocking the laser beam. OK after removing the obstacles? Remove part on the OK after replacing paper path causing the the LSU? trouble...
TROUBLESHOOTING FLOW CHART 10 October, 2002 4.5.2 NO IMAGE A on next No image? page Self testing is Re-test after replacing the Self test pattern possible via Tech prints? connector or Main board. Mode? Check connection to Take out the cartridge computer or replace and prepare the tester for controller...
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10 October, 2002 TROUBLESHOOTING FLOW CHART Is the Check the conception of connection of OPC GND and Frame Ground frame Ground and OPC correct? (less than 10%) Transfer voltage OK? (on the transfer roller shaft) Are the connection terminal and connection Repair or replace terminal correct? Replace HVPS or repair...
TROUBLESHOOTING FLOW CHART 10 October, 2002 4.5.3 LIGHT IMAGE Is it not over the Replace the AIO guaranty life of do counter? Is the toner save mode or the light after setting to the mode is selected? normal mode? Is the high voltage normal? (charging, Replace the HVPS developing, transfer)
10 October, 2002 TROUBLESHOOTING FLOW CHART 4.5.4 ALL BLACK Check the path among video controller, engine Does board, HVPS, LSU for the the video data line to All black in printing LSU transit to High/Low shortage or open. area? when printing? →...
TROUBLESHOOTING FLOW CHART 10 October, 2002 4.5.5 VERTICAL WHITE LINE (BAND) Check if the printout is still has White line missing the same problem even definitely? right after passed through the transfer roller The ribs in fuser or toner on the roller may invoke the Dirt of dust stuck onto the window of internal lens of image problem →...
10 October, 2002 TROUBLESHOOTING FLOW CHART 4.5.6 DARK IMAGE Dark selected vial RCP? Change to Normal and test Same at Normal? Works cor with Repair or replace the -350V of Bias defective component voltage? Toner over supply due to Works correctly the adjustment fault of after replaced the metering...
TROUBLESHOOTING FLOW CHART 10 October, 2002 4.5.7 DIRTY BACKGROUND Print 20 to 30 pages Recommended using the recommended paper used? paper Is pressure of transfer roller too Replace transfer roller's Same problem high? occurs? holder Does the operation of TR work properly? Transfer, charge •...
10 October, 2002 TROUBLESHOOTING FLOW CHART 4.5.8 GHOST Clean transfer roller's holder and TR drive gear or replace TR holder ass'y Is it regular Is it regular Is it regular interval Does the interval of 75.4 interval of 31.6 of 47 mm? operation of TR (as transfer roller work properly?
TROUBLESHOOTING FLOW CHART 10 October, 2002 4.5.9 BLACK SPOT Is it regular Is it regular Remove obstacles stuck interval of 37.7 interval of 75.4 on OPC drum's surface The problem randomly Perform the OPC When taking out Bad image occurred due to the the cartridge, removes by cleaning using the...
10 October, 2002 TROUBLESHOOTING FLOW CHART 4.5.10 HORIZONTAL BAND The OPC is damaged under the direct sunlight Black for around 5 minutes band is far about 10 Black band? mm from white → If the same problem band? persists in 10 hours, replace the AIO Problem of internal contacts in OPC...
TROUBLESHOOTING FLOW CHART 10 October, 2002 4.5.11 TONER CONTAMINATIONS BACK OF PAPER Transfer roller is Clean the transfer roller clear? Paper path is clear? Clean the paper path Clean the pressure roller H911T921.WMF 4.5.12 PARTIAL BLANK IMAGE (NOT PERIODIC) Is it not over the guaranty life of dot Replace the AIO counter?
10 October, 2002 TROUBLESHOOTING FLOW CHART 4.5.13 PARTIAL BLANK IMAGE (PERIODIC) Is it not over the guaranty life of dot Replace the AIO counter? Is the AIO installed Install the AIO correctly correctly? Clean the TR holder, the Is it regular interval Transfer roller works TR gear OPC roller gear of 47.1mm?
TROUBLESHOOTING FLOW CHART 10 October, 2002 4.5.14 IRREGULAR DENSITY Defective agitator in the toner supplying part of AIO When gray → Replace the AIO Transfer/charge/ OK after taking pattern printing, developing voltage out and rocking irregular density drops while printing? Check if the "guide deve the AIO? persists?
14 March, 2003 TROUBLESHOOTING FLOW CHART 4.5.16 TREMBLING AT THE END WHEN OHP PRINTING Is the OHP mode selected Set to OHP mode using the software application? Use the recommended Recommended OHP film film used? Inserted over When OHP printing, Use the recommended than 10 films into the does the fan temporarily...
TROUBLESHOOTING FLOW CHART 10 October, 2002 4.5.18 NO POWER (LCD NO DISPLAY LED OFF) Check the voltage first Plug in the power and plug the power cord cord? The power Supply the power as the voltage supplying is the same as rating rating? The fan revolves...
14 March, 2003 TROUBLESHOOTING FLOW CHART 4.5.19 FUSING UNIT ERROR Measure the resistance at the both ends of AC Line with covers open Thermostat is open due to Less than 10W? the heat etc. → Replace the Fusing unit Remove the covers Check the PCI and fusing control part and CN502 on Re-assemble the top...
TROUBLESHOOTING FLOW CHART 10 October, 2002 4.5.20 PAPER JAM (MISFEEDING) The Engine board defected Sounds the → Replace boards solenoid on when starts print? The solenoid defected → Replace it The pick-up unit is assembled wrong Does the paper move? →...
10 October, 2002 TROUBLESHOOTING FLOW CHART 4.5.21 PAPER JAM (JAM1) Check the actuator exists and its operation Paper actuator of Paper stopped stopped before paper exit and around the engine board before the the OPC? sensor works → Replace fusing unit? Check the roller and ribs Check the LSU and if it of fusing unit are in...
TROUBLESHOOTING FLOW CHART 10 October, 2002 4.5.22 LSU ERROR Check Try again to connector CBF Harness28P (MAIN B'D to Replace the connector ENGINE B'D) Check MAIN B'D CN9-3, Replace the MAIN B'D P_MOTOR Signal Check MAIN B'D CN9-4, Replace the LSU LREDADY Signal Check MAIN B'D CN9-9,...
10 October, 2002 TECH MODE 5. SERVICE MODE 5.1 TECH MODE In TECH mode, the technician performs various tests to isolate a malfunction. Additionally the technician sets optional features to customize the machine depending on the user’s operation environment. 5.1.1 ACCESSING TECH MODE To Access TECH Mode Press User Tools, #, 1, 9, 3, 4 in sequence.
TECH MODE 10 October, 2002 5.1.2 SYSTEM DATA LIST IN TECH MODE Function Item Content Default FAX NUMBER/ FAX NUMBER NAME FAX NAME DATE FORMAT EUROPE/USA NA: mmddyy EU/AS: ddmmyy TIME/DATE SETUP TIME/DATE LANGUAGE ENG / D / F / I / ES / P / NL ENGLISH SEND FROM MEMORY ON/OFF...
10 October, 2002 TECH MODE 5.1.3 TECH MODE OPTIONS In TECH mode, press User Tools, then press “◄” or “►” until “TECH MODE” appears in the display. Press Start/Enter. The following options are available. NOTE: If necessary, print System Data List in TECH mode. This list shows all current system data settings including the TECH MODE options.
TECH MODE 10 October, 2002 REDIAL COUNT • You can set the number of times you want the machine to redial automatically; when automatic transmission is done, when the remote machine is busy or when the machine sends a fax. If there is no response after redialing the number of times specified, redial is terminated.
10 October, 2002 TECH MODE 5.1.4 MEMORY CLEAR OPTIONS In USER mode, items to be cleared are selectable; either FAX NUMBER/NAME, DIAL/SCHEDULE, JOURNAL or DEFAULT SETUP. In TECH mode, all items listed above are cleared in one time by pressing Start/Enter after showing “ARE YOU SURE?”...
TECH MODE 10 October, 2002 REMOTE TEST The Remote Test feature can be enabled to call up and run a diagnostic test on customer’s machine from a remote location using RDC program. NOTIFY TONER LOW With this feature enabled, and the toner becomes low, the toner low information will be sent to a specified contact point.
10 October, 2002 TECH MODE TONER COUNT This feature shows the current state of the toner cartridge. • TONER COUNT: The total number of the dots used to print up to current time. • CRU STATE: The number of pages which the toner cartridge can print. CAUTION: After replacing the Main Board, you should update all relevant information to the new board.
TECH MODE 10 October, 2002 5.1.6 PRINTOUT REPORTS In TECH mode, press Report/Help, then select the desired list or report by using “!” or “"”, key, then press Start/Enter. The following options are available. But in User Mode, options listed below “SYSTEM DATA”...
10 October, 2002 TECH MODE PROTOCOL LIST This feature shows the sequence of the CCITT group 3 T.30 protocol during the most recent sending or receiving operation. Use this list to check for send and receive errors. If a communication error occurs while the machine is in TECH mode, the protocol list will print automatically.
TECH MODE 10 October, 2002 SHADING PRINT H911S900.BMP With this print, you can check the scanning elements of the CIS (Contact Image Sensor). NOTE: This print is automatically printed after the ADJUST SHADING is performed in TECH mode. 5-10...
10 October, 2002 TECH MODE 5.1.7 ENGINE TEST MODE The Engine Test mode is used to check the operation of the components related to the printer engine. The following tests are available: To access the Engine Test Mode: 1. Press User Tools, #, 1, 9, 3, 1 in sequence. 2.
PROGRAM DOWNLOAD 10 October, 2002 5.2 PROGRAM DOWNLOAD Program (firmware) for this machine is upgraded by connecting to a PC via a parallel cable. A DOS Command to upgrade the program must be entered. Files needed to upgrade: • down_com.bin •...
10 October, 2002 PROGRAM DOWNLOAD 5.2.2 RE-PROGRAMMING PROCEDURE AFTER DOWNLOAD The following items need to be re-programmed after the software has download. Re-Program Country Code 1. Press User Tools, #, 1, 9, 3 and then Start/Enter in sequence. 2. “MEMORY ALL CLEAR” will appear. 3.
10 October, 2002 NEW CRU (AIO) DETECTION 6. DETAILED DESCRIPTIONS 6.1 NEW CRU (AIO) DETECTION The new supply CRU cartridge [A] has a fuse [B] that when detected informs the machine that a brand-new cartridge has been installed. (Starter CRU does not have fuse.) When the new cartridge is installed in the machine, the machine automatically detects by the fuse that the cartridge is brand-new, and resets the total dot counter...
10 October, 2002 SPECIFICATIONS SPECIFICATIONS 1. ITEMS FAX MFP REMARKS L1A/L1B ITEMS REMARKS General Size (W*D*H) 313 x 356 x 195 mm / 12.3 x 14.0 x 7.7 ins W x D x H Weight 7.7 Kg / 17.0 lbs With accessories Power Rating AC 110 V to 127 V / 2.5A, 50/60 Hz ±...
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SPECIFICATIONS 10 October, 2002 ITEMS REMARKS Print Speed 8 ppm Resolution 300 x 300, 600 x 600 Print Legal Width Effective 202 mm for A4, 208 mm for Letter/Legal Print Language Toner Save 30 % Scan Scan Method Quick Scan Speed 6 sec 3 sec Resolution...
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10 October, 2002 SPECIFICATIONS ITEMS REMARKS Resolu- Standard 8 x 3.85 lines/mm (203 x 98 dpi) tion Fine 8 x 7.7 lines/mm (203 x 196 dpi) Super Fine 11.8 x 11.8 lines/mm (300 x 300 dpi) Memory Capacity 2 MB (About 160 sheets of an ITU-T #1chart with standard resolution) Optional None...
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SPECIFICATIONS 10 October, 2002 ITEMS REMARKS Paper Paper Paper A4, Letter, Legal, Folio, *: 98.0 x 148 - Handling Spec. Size Executive, A5, B5, A6, 215.9 x 355.6 mm / A4, Letter, Legal, Monarch (7 3/4), 3.86 x 5.83 - Folio COM10, #9, C5, DL, 8.5 x 14.0 ins...
27 May, 2003 PARTS CATALOG 6. PLATE-UPPER UNIT ASSEMBLY H911C908.WMF Index H911 H912 Part No. Description Q'ty H911 9537 Upper Metal Plate H911 9538 Paper Pick-up Roller...
PARTS CATALOG INDEX 27 May, 2003 PARTS CATALOG INDEX Section and Part No. Description Index No. H911 1000 User’s Guide – NA/Asia H911 1001 Quick Guide - EU H911 1016 Quick Guide - China H911 9500 PSU-110V H911 9501 PSU-220V H911 9502 Laser Unit H911 9503...
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27 May, 2003 PARTS CATALOG Section and Part No. Description Index No. H911 9545 ADF Feed Roller H911 9546 Cap-Left Side H911 9547 PCB-Hook H911 9548 Side Friction Pad-Left H911 9549 Side Friction Pad-Right H911 9550 Paper Pick-up Gear Ass'y 3-11 H911 9551 Sensor Actuator- Paper Exit...
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