Ricoh LDD250, Service Manual

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SM v C262/C265
PAPER EXIT SENSOR ..............................................................3-152
3.12.5 GAP ADJUSTMENT BETWEEN PAPER PICK-OFF
PLATE AND PRESSURE CYLINDER .......................................3-153
3.12.6 PAPER EXIT PAWL DRIVE TIMING ADJUSTMENT .................3-155
3.12.7 GAP ADJUSTMENT BETWEEN EXIT PAWL AND DRUM ........3-156
3.12.8 CHOCKS ....................................................................................3-157
TROUBLESHOOTING
4. TROUBLESHOOTING ................................................................. 4-1
4.1 SERVICE CALL CODES ...........................................................................4-1
4.2 CLASSIFICATION LIST ............................................................................4-1
4.3 SERVICE CALL CODE TABLE .................................................................4-2
4.4 ELECTRICAL COMPONENT DEFECTS ................................................4-11
4.4.1 SCANNER ......................................................................................4-11
4.4.2 ADF ................................................................................................4-11
4.4.3 MASTER MAKING UNIT ................................................................4-13
4.4.4 DRUM.............................................................................................4-13
4.4.5 MASTER EJECT ............................................................................4-16
4.4.6 PAPER FEED.................................................................................4-17
4.4.7 PRINTING AND PRESSURE CYLINDER ......................................4-18
4.4.8 PAPER EJECT ...............................................................................4-19
4.4.9 PAPER SEPARATION ...................................................................4-20
4.4.10 FUSES ON BOARDS ...................................................................4-20
4.5 DIP SW, LED, VR, TP, AND FUSE TABLES...........................................4-21
4.5.1 TEST POINTS ................................................................................4-21
Ink Detection Board ............................................................................4-21
4.5.2 DIP SWITCHES..............................................................................4-21
Ink Detection Board ............................................................................4-21
ACU ....................................................................................................4-21
4.5.3 POTENTIOMETERS ......................................................................4-22
I/O Board ............................................................................................4-22
Power Supply Board ...........................................................................4-22
Ink Detection Board ............................................................................4-22
4.5.4 LED'S .............................................................................................4-23
MPU....................................................................................................4-23
I/O Board ............................................................................................4-23
ACU ....................................................................................................4-23
Operation Panel..................................................................................4-23
4.5.5 FUSES............................................................................................4-23
Power Supply Unit ..............................................................................4-23
Main Motor Drive Board ......................................................................4-24
I/O Board ............................................................................................4-24
SERVICE TABLES
5. SERVICE TABLES....................................................................... 5-1