Ricoh G133 Service Manual page 18

3.13.5 EGB .........................................................................................3-106
When installing the new EGB ...........................................................3-107
3.13.6 PSU .........................................................................................3-107
PSU bracket......................................................................................3-107
PSU board ........................................................................................3-108
3.13.7 ITB POWER SUPPLY BOARD ................................................3-108
3.13.8 HIGH VOLTAGE SUPPLY BOARD .........................................3-109
3.13.9 HIGH VOLTAGE SUPPLY BOARD BRACKET .......................3-109
3.13.10 IH INVERTER.......................................................................3-110
3.13.11 CONTROLLER BOARD .......................................................3-110
When installing the new controller board ..........................................3-111
3.13.12 HDD FAN .............................................................................3-112
When installing the HDD fan.............................................................3-112
3.13.13 HDD .....................................................................................3-112
Disposal of HDD Units ......................................................................3-113
3.13.14 NVRAM REPLACEMENT PROCEDURE.............................3-114
NVRAM on the EGB .........................................................................3-114
NVRAM on the Controller .................................................................3-114
When installing a new NVRAM .........................................................3-115
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................................4-2
Vsg Adjustment Result..........................................................................4-5
4.1.3 LINE POSITION ADJUSTMENT RESULT ........................................4-6
4.2 SERVICE CALL CONDITIONS ..................................................................4-8
4.2.1 SUMMARY ........................................................................................4-8
SC Code Classification .........................................................................4-9
4.3 SC TABLE ................................................................................................4-12
4.4 TROUBLESHOOTING GUIDE .................................................................4-77
4.4.1 IMAGE QUALITY.............................................................................4-77
4.4.2 LINE POSITION ADJUSTMENT .....................................................4-78
Test.....................................................................................................4-79
Countermeasure list for color registration errors.................................4-79
4.5 JAM DETECTION.....................................................................................4-86
4.5.1 PAPER JAM DISPLAY ....................................................................4-86
4.5.2 JAM CODES AND DISPLAY CODES .............................................4-86
Paper Size Code.................................................................................4-95
Sensor Locations ................................................................................4-96
4.6 ELECTRICAL COMPONENT DEFECTS..................................................4-97
4.6.1 SENSORS.......................................................................................4-97
4.6.2 BLOWN FUSE CONDITIONS .......................................................4-102
Power Supply Unit ............................................................................4-102
G133 vi SM