Gestetner G060 Service Manual page 19

NVRAMs for both BCU and Controller ................................................3-38
3.9.5 REMOVING THE HIGH VOLTAGE SUPPLY BOARD - C, B .........3-39
3.9.6 PSU ................................................................................................3-39
3.10 DRIVE UNIT ..........................................................................................3-40
3.10.1 REGISTRATION CLUTCH ...........................................................3-40
DEVELOPMENT CLUTCHES ............................................................3-41
3.10.3 DEVELOPMENT DRIVE MOTOR - CMY .....................................3-43
3.10.4 DRUM DRIVE MOTOR - CMY AND
DRUM DRIVE MOTOR - K...........................................................3-44
DEVELOPMENT DRIVE MOTOR - K .................................................3-45
TROUBLESHOOTING
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 ................................................................4-35
4.4.1 IMAGE QUALITY............................................................................4-35
4.4.2 COLOR SHIFT ...............................................................................4-39
Adjustment Standard: Max. 200 µm...................................................4-41
Preparation .........................................................................................4-41
How to measure the gap between color lines .....................................4-46
4.4.3 COLOR SHIFT AFTER TRANSFER UNIT REPLACEMENT .........4-48
Check the color shift level ...................................................................4-48
Fusing/ Registration Roller Speed Adjustment ...................................4-48
SP mode (sub-scan registration) reset................................................4-48
Transfer belt aging ..............................................................................4-48
Fusing roller speed adjustment...........................................................4-49
Registration roller speed adjustment (for color mode) ........................4-49
Line position fine adjustment for sub-scan..........................................4-49
Registration roller speed adjustment (For B&W mode).......................4-50
4.5 ELECTRICAL COMPONENT DEFECTS ................................................4-51
4.5.1 SENSORS ......................................................................................4-51
4.6 BLOWN FUSE CONDITIONS .................................................................4-52
4.7 LEDS (BCU) ............................................................................................4-52
SERVICE TABLES
5 SERVICE TABLES........................................................................ 5-1
5.1 SERVICE PROGRAM MODE....................................................................5-1
5.1.1 ENABLING AND DISABLING SERVICE PROGRAM MODE ...........5-1
SM iii
Rev. 09/2003
G060