Ricoh G147 Service Manual page 16

TROUBLESHOOTING
4. TROUBLESHOOTING............................................................. 4-1
4.1 SERVICE CALL CONDITIONS .............................................................4-1
SC CODE DESCRIPTIONS ..................................................................4-1
4.2 ELECTRICAL COMPONENT DEFECTS.............................................4-35
4.2.1 SENSORS..................................................................................4-35
4.2.2 SWITCHES ................................................................................4-36
4.2.3 BLOWN FUSE CONDITIONS (PSU)..........................................4-37
4.2.4 BICU LEDS ................................................................................4-37
4.2.5 CONTROLLER BOARD TEST POINTS.....................................4-37
SERVICE TABLES
5. SERVICE TABLES .................................................................. 5-1
5.1 SERVICE PROGRAM MODE OPERATION..........................................5-1
5.1.1 GENERAL NOTES .......................................................................5-1
5.1.2 ENTERING AND LEAVING THE SERVICE PROGRAM MODE ..5-1
5.1.3 PRINTER CONTROLLER SERVICE MODE................................5-2
5.1.4 PRINTER ENGINE SERVICE MODE...........................................5-4
5.1.5 LEAVING THE SP MODE ............................................................5-5
5.2 SERVICE PROGRAM MODE TABLES .................................................5-6
5.2.1 SERVICE TABLE KEY .................................................................5-6
5.2.2 SERVICE TABLES .......................................................................5-6
5.3 TEST PATTERN PRINTING................................................................5-91
5.3.1 SELECTING THE TEST PATTERN ...........................................5-91
5.3.2 PRINTING THE TEST PATTERN ..............................................5-92
5.3.3 SP2902-03 PRINTING TEST PATTERNS .................................5-93
5.4 INPUT CHECK ....................................................................................5-95
5.5 OUTPUT CHECK ..............................................................................5-102
5.6 MEMORY CLEAR: SP5801...............................................................5-106
5.7 SMC REPORT...................................................................................5-108
5.8 UPDATING THE FIRMWARE ...........................................................5-110
5.8.1 SETTING THE MACHINE IN FIRMWARE UPDATE MODE ....5-110
5.8.2 REVIEWING THE MODULE STATUSES.................................5-110
5.8.3 HOW TO UPDATE A MODULE................................................5-111
5.8.4 PRINTING THE SELF-DIAGNOSIS REPORT .........................5-113
5.9 UPLOADING/DOWNLOADING NVRAM DATA.................................5-115
5.9.1 UPLOADING NVRAM DATA....................................................5-115
5.9.2 DOWNLOADING NVRAM DATA..............................................5-116
5.10 SELF-DIAGNOSTIC MODE ..........................................................5-118
5.10.1 SELF-DIAGNOSTIC MODE AT POWER ON.........................5-118
5.10.2 SELF-DIAGNOSTIC TEST FLOW..........................................5-119
5.10.3 DETAILED SELF-DIAGNOSTIC MODE.................................5-119
5.11 DIP SWITCHES.............................................................................5-121
5.11.1 CONTROLLER: DIP SW2 ......................................................5-121
G147 iv SM