Ricoh SAVIN D0AP Service Manual page 14

4.18.1 SCB (MF MODEL) ....................................................................................... 4-135
NVRAM on the SCB ........................................................................................ 4-137
4.18.2 SCB WITH THE CONTROLLER BOX (MF MODEL) .................................... 4-142
4.18.3 HDD (MF MODELS) .................................................................................... 4-142
4.18.4 FCU BOARD (FAX MODEL) ........................................................................ 4-144
4.18.5 SPEAKER (FAX MODEL) ............................................................................ 4-149
4.18.6 CONTROLLER BOARD (PRINTER MODEL) .............................................. 4-150
NVRAM on the Controller Board ...................................................................... 4-152
4.18.7 BCU (PRINTER MODEL) ............................................................................ 4-152
NVRAM on the BCU ........................................................................................ 4-155
4.18.8 BCU WITH THE BRACKET (PRINTER MODEL) ......................................... 4-156
4.18.9 PSU ............................................................................................................. 4-158
4.18.10 TONER END SENSOR (S9) .................................................................. 4-160
4.18.11 HVPS .................................................................................................... 4-160
4.18.12 HVPS WITH THE BRACKET ................................................................. 4-161
4.18.13 DC SWITCH (SW4) ............................................................................... 4-161
4.18.14 FRONT INTERLOCK SWITCH (SW1) ................................................... 4-162
4.18.15 REAR INTERLOCK SWITCH (SW2) ..................................................... 4-162
4.18.16 TEMPERATURE/HUMIDITY SENSOR (S11)......................................... 4-162
4.18.17 NFC BOARD ......................................................................................... 4-163
4.19 FANS/ FILTERS .............................................................................................. 4-165
4.19.1 PCDU COOLING FAN (RIGHT) (FAN1) ....................................................... 4-165
4.19.2 PCDU COOLING FAN (LEFT) (FAN2) ......................................................... 4-166
4.19.3 PSU COOLING FAN (FAN3) ........................................................................ 4-167
4.19.4 AIR FILTERS ............................................................................................... 4-167
5. SYSTEM MAINTENANCE ..............................................................5-1
5.1 SERVICE PROGRAM MODE .................................................................................... 5-1
5.1.1 SP TABLES ..................................................................................................... 5-1
5.1.2 ENABLING AND DISABLING SERVICE PROGRAM MODE............................ 5-1
Entering SP Mode ............................................................................................... 5-1
Exiting SP Mode .................................................................................................. 5-2
5.1.3 TYPES OF SP MODES ................................................................................... 5-2
For Printer Model................................................................................................. 5-2
For MF Models .................................................................................................... 5-3
5.1.4 SERVICE MODE LOCK/UNLOCK ................................................................... 5-4
5.2 TEST PATTERN PRINTING ....................................................................................... 5-6
5.3 FIRMWARE UPDATE BY SD CARD .......................................................................... 5-7
5.3.1 OVERVIEW ..................................................................................................... 5-7
5.3.2 PREPARATION ............................................................................................... 5-7
D0AP/D0C4/D0C5/D0C6/M0BQ/M0D1 viii SM