Service manual

G130/G131 iv SM
3.12.10 CHOKE COIL .............................................................................3-59
3.12.11 DRIVER BOARD ........................................................................3-59
3.13 DRIVE UNIT ..........................................................................................3-60
3.13.1 REGISTRATION CLUTCH ...........................................................3-60
3.13.2 DEVELOPMENT CLUTCHES ......................................................3-60
3.13.3 DEVELOPMENT MOTOR - CMY .................................................3-61
3.13.4 DRUM DRIVE MOTOR - CMY AND DRUM DRIVE MOTOR - K.......... 3-63
3.13.5 DEVELOPMENT DRIVE MOTOR - K...........................................3-64
3.14 TONER SUPPLY UNIT .........................................................................3-65
M Toner Supply Unit ...........................................................................3-65
C and Y Toner Supply Units ...............................................................3-69
K Toner Supply Unit............................................................................3-70
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 .................................................................4-8
4.2.1 SUMMARY .......................................................................................4-8
SC Code Classification .........................................................................4-9
4.3 SC TABLE ...............................................................................................4-10
4.4 TROUBLESHOOTING GUIDE 1 .............................................................4-43
4.4.1 IMAGE QUALITY............................................................................4-43
Work-flow............................................................................................4-43
4.5 TROUBLESHOOTING GUIDE 2 .............................................................4-45
4.5.1 IMAGE QUALITY............................................................................4-45
Detailed Explanation ...........................................................................4-45
4.5.2 COLOR SHIFT ...............................................................................4-51
Adjustment Standard: Max. 150 mm..................................................4-53
How to measure the gap between color lines .....................................4-60
4.5.3 COLOR SHIFT AFTER TRANSFER UNIT REPLACEMENT .........4-62
Check the color shift level ...................................................................4-62
Fusing/ Registration Roller Speed Adjustment ...................................4-62
4.5.4 BLACK OVER PRINT .....................................................................4-65
Black Over Print Disabled ...................................................................4-65
Black Over Print Enabled....................................................................4-65
4.6 ELECTRICAL COMPONENT DEFECTS ................................................4-66
4.7.1 SENSORS ......................................................................................4-66
4.7 BLOWN FUSE CONDITIONS .................................................................4-68
4.8 LEDS (BCU) ............................................................................................4-68