Ricoh C231 - Page 16

iv
C231/C237/C238/C248/C267 SM
1. Main Motor........................................................................................4-2
2. Doctor Roller.....................................................................................4-2
3. Drum Master Clamper.......................................................................4-2
4. Ink Roller Unit ...................................................................................4-2
5. Ink Pump...........................................................................................4-2
4.1.4 PAPER DELIVERY SECTION..........................................................4-3
1. Exit Pawl ...........................................................................................4-3
4.1.5 ELECTRICAL COMPONENTS.........................................................4-3
1. Main Processing Unit (MPU) 1..........................................................4-3
2. Main Processing Unit (MPU) 2..........................................................4-3
3. Power Supply Unit ............................................................................4-3
4. Sensor Adjustments..........................................................................4-3
4.2 DIP SW, LED, VR, TP, AND FUSE TABLES.............................................4-4
4.2.1 TEST POINTS ..................................................................................4-4
MPU......................................................................................................4-4
4.2.2 POTENTIOMETERS ........................................................................4-4
MPU......................................................................................................4-4
Power Supply Unit ................................................................................4-4
4.2.3 LED'S ...............................................................................................4-4
4.2.4 FUSES..............................................................................................4-5
MPU......................................................................................................4-5
PSU ......................................................................................................4-5
4.3 SERVICE CALL CODES ...........................................................................4-6
4.4 SERVICE PROGRAM MODE....................................................................4-8
4.4.1 ACCESS PROCEDURE ...................................................................4-8
Service Program Mode Access Procedure (For Engineers) .................4-8
Service Program Mode Access Procedure (For Users) ........................4-9
Change Adjustment Values or Modes.................................................4-10
4.4.2 SERVICE PROGRAM TABLE ........................................................4-11
Remarks .............................................................................................4-20
4.4.3 INPUT/OUTPUT CHECK MODE....................................................4-23
Input/Output Check Mode Access Procedure .....................................4-23
Input Check Table...............................................................................4-24
Output Check Table............................................................................4-26
4.5 TEST PATTERN IMAGE MODE .............................................................4-28
4.6 USER CODE MODE ...............................................................................4-29
4.7 ROM HISTORY .......................................................................................4-31
4.7.1 C231 FIRMWARE MODIFICATION HISTORY................................4-31
PREVENTIVE MAINTENANCE
PREVENTIVE MAINTENANCE......................................................... 5-1
5.1 MAINTENANCE TABLE ............................................................................5-1
REPLACEMENT AND ADJUSTMENT
REPLACEMENT AND ADJUSTMENT ............................................. 6-1