Oki MB760b Maintenance Manual - Page 5

Oki Data CONFIDENTIAL Index 3.2.25 Paper feed rollers (MPT 3-23 3.2.26 Tray-Assy-Document / Cover-ADF-R 3-25 3.2.27 ADF-unit...3-26 3.2.28 Sheet-document / Paper-weight-Assy / Spring-PW-ADF 3-27 3.2.29 Hinge-Assy-L / Hinge-Assy-R 3-28 3.2.30 ADF-Assy 3-28 3.2.31 Guide-Retard / Roller / Motor / Clutch / Solenoid/Photo-sensor 3-29 3.2.32 Guide-Assy-Retard 3-30 3.2.33 Flatbed-Unit 3-31 3.2.34 Frame-assy-FB 3-32 3.2.35 Antenna (for wireless model only 3-33 3.2.36 Stapler (for stapler model only 3-33 3.2.37 Finisher (for finisher model only 3-34 3.3 Check the Scanner Mech Level and SU FW version 3-35 3.4 Oiling spots ...3-36 4. Maintenance Menu 4-1 4.1 Maintenance Utility 4-2 4.2 Maintenance menu functions 4-2 4.2.1 Self-diagnostic mode 4-3 4.2.1.1 Operation panel 4-3 4.2.1.2 Ordinary self-diagnostic mode (level 1 4-5 4.2.1.2.1 How to enter the self-diagnostic mode (level 1 4-5 4.2.1.2.2 How to exit the self-diagnostic mode 4-5 4.2.1.3 Switch scan test 4-6 4.2.1.4 Motor clutch test 4-8 4.2.1.5 Test print 4-10 4.2.1.6 Consumable item counter display 4-13 4.2.1.7 Number of print copies counter display 4-14 4.2.1.8 Switching between the Factory mode and the Shipping mode.........4-14 4.2.1.9 Self-diagnostic function setting 4-15 4.2.1.10 LED head serial number display 4-16 4.2.1.11 NVRAM parameter setting 4-16 4.2.2 How to enter the Scanner Maintenance Menu 4-17 4.3 Setups upon completion of part replacement 4-19 4.3.1 Precautions when replacing the PU board 4-19 5. Periodic maintenance 5-1 5.1 Cleaning ...5-2 5.2 How to clean the LED lens array 5-3 5.3 How to clean the pickup rollers for MP Tray 5-5 5.4 How to clean the paper feed rollers for MP Tray 5-6 5.5 How to clean the rollers in the ADF 5-8 5.6 How to clean the document rollers in the ADF 5-9 5.7 How to clean the document glass 5-10 6. Troubleshooting and repair procedure 6-1 6.1 Before starting the repair work 6-2 6.2 Confirmation items before taking corrective action against abnormalities .......6-2 6.3 Precautions when taking corrective action against abnormality 6-2 6.4 Preparation for troubleshooting 6-2 6.5 Troubleshooting method 6-3 6.5.1 Error code list 6-3 6.5.2 Printer error troubleshooting 6-6 6.5.3 Scanner error troubleshooting 6-12 6.5.4 Preparation for troubleshooting 6-14 6.5.5 Troubleshooting the abnormal images 6-47 6.6 Fuse check ...6-53 6.7 Paper cassette switches versus Paper size correspondence table 6-54 7. Connection diagrams 7-1 7.1 Resistance value check 7-2 7.2 Parts location 7-5 45387101TH Rev.1 5 /