Ricoh C231 Service Manual page 19

1. OVERALL INFORMATION .......................................................... 1-1
1.1 ESSENTIAL DIFFERENCES BETWEEN THE C237 AND C231
MODELS ...................................................................................................1-1
1.2 SPECIFICATIONS.....................................................................................1-4
1.3 NEW ELECTRICAL COMPONENTS ........................................................1-5
1.3.1 MAIN BODY .....................................................................................1-5
1.3.2 TABLES OF ELECTRICAL COMPONENTS ....................................1-5
Boards ..................................................................................................1-5
Switches ...............................................................................................1-5
2. DETAILED SECTION DESCRIPTIONS ....................................... 2-1
2.1 PAPER FEED............................................................................................2-1
2.1.1 PAPER FEED/SEPARATION PRESSURE ADJUSTMENT
MECHANISM ...................................................................................2-1
2.2 PAPER DELIVERY....................................................................................2-2
2.2.1 EXIT PAWL AIR PUMP MECHANISM (CHINESE MODEL ONLY)..2-2
3. INSTALLATION............................................................................ 3-1
4. SERVICE TABLES....................................................................... 4-1
4.1 SERVICE CALL CODES ...........................................................................4-1
4.2 SERVICE PROGRAM TABLE ...................................................................4-3
4.3 INPUT/OUTPUT CHECK MODE.............................................................4-12
Input Check Table...............................................................................4-12
Output Check Table ............................................................................4-14
4.4 ROM HISTORY .......................................................................................4-16
4.4.1 C237 FIRMWARE MODIFICATION HISTORY...............................4-16
5. PREVENTIVE MAINTENANCE.................................................... 5-1
6. REPLACEMENT AND ADJUSTMENT ........................................ 6-1
6.1 MASTER FEED SECTION ........................................................................6-1
6.1.1 MASTER END SENSOR ADJUSTMENT .........................................6-1
6.2 MASTER EJECT SECTION ......................................................................6-2
6.2.1 MASTER EJECT UNIT REMOVAL...................................................6-2
6.3 PAPER FEED SECTION ...........................................................................6-2
6.3.1 PAPER SEPARATION PRESSURE ADJUSTMENT........................6-2
6.4 PAPER DELIVERY SECTION...................................................................6-3
6.4.1 AIR PUMP ADJUSTMENT (CHINESE MODEL ONLY)....................6-3
SM
C237
TABLE OF CONTENTS
vii
Rev. 07/2001
C231/C237/C238/C248/C267