Service manual

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3.10.4 DRUM DRIVE MOTOR - CMY AND
DRUM DRIVE MOTOR - K...........................................................3-43
DEVELOPMENT DRIVE MOTOR - K.................................................3-44
4 TROUBLESHOOTING ................................................................. 4-1
4.1 PROCESS CONTROL ERROR CONDITIONS .........................................4-1
4.1.1 DEVELOPER INITIALIZATION RESULT .........................................4-1
4.1.2 PROCESS CONTROL SELF-CHECK RESULT...............................4-3
4.1.3 LINE POSITION ADJUSTMENT RESULT .......................................4-4
4.2 SERVICE CALL CONDITIONS .................................................................4-7
4.2.1 SUMMARY .......................................................................................4-7
SC Classification...................................................................................4-7
4.3 SC TABLE .................................................................................................4-9
4.4 TROUBLESHOOTING GUIDE ................................................................4-33
4.4.1 IMAGE QUALITY............................................................................4-33
4.4.2 COLOR SHIFT ...............................................................................4-37
Adjustment Standard: Max. 200 µm...................................................4-39
Preparation .........................................................................................4-39
How to measure the gap between color lines .....................................4-44
4.4.3 COLOR SHIFT AFTER TRANSFER UNIT REPLACEMENT .........4-46
Check the color shift level...................................................................4-46
Fusing/ Registration Roller Speed Adjustment ...................................4-46
SP mode (sub-scan registration) reset................................................4-46
Transfer belt aging..............................................................................4-46
Fusing roller speed adjustment...........................................................4-47
Registration roller speed adjustment (for color mode) ........................4-47
Line position fine adjustment for sub-scan..........................................4-47
Registration roller speed adjustment (For B&W mode).......................4-48
4.5 ELECTRICAL COMPONENT DEFECTS ................................................4-49
4.5.1 SENSORS......................................................................................4-49
4.6 BLOWN FUSE CONDITIONS .................................................................4-50
4.7 LEDS (BCU)............................................................................................4-50
5 SERVICE TABLES....................................................................... 5-1
5.1 SERVICE PROGRAM MODE....................................................................5-1
5.1.1 ENABLING AND DISABLING SERVICE PROGRAM MODE...........5-1
Entering the Service Mode....................................................................5-1
Accessing the Required Program .........................................................5-2
Inputting a Value or Setting for a Service Program...............................5-2
Exiting Service Mode ............................................................................5-2
5.2 PRINTER CONTROLLER SERVICE MODE.............................................5-3
5.2.1 REMARKS........................................................................................5-3
Display on the Control Panel Screen....................................................5-3
Others...................................................................................................5-4
5.2.2 SERVICE MODE MENU (“1. SERVICE”) .........................................5-5
5.2.3 BIT SWITCH PROGRAMMING........................................................5-6
5.3 PRINTER ENGINE SERVICE MODE........................................................5-7
5.3.1 SERVICE MODE TABLE (“2. ENGINE”) ..........................................5-7
SP1-XXX (Feed) ...................................................................................5-7