Ricoh C249 Service Manual page 14

3.6.2 THERMAL HEAD............................................................................3-12
3.6.3 DUCT PLATE HP SENSOR / DUCT PLATE MOTOR....................3-16
3.6.4 CUTTER UNIT................................................................................3-17
3.6.5 THERMAL HEAD DRIVING UNIT ..................................................3-17
3.6.6 THERMAL HEAD VOLTAGE ADJUSTMENT.................................3-18
3.6.7 DUCT JAM SENSOR ADJUSTMENT ............................................3-19
3.6.8 MASTER EDGE SENSOR ADJUSTMENT ....................................3-20
3.6.9 2ND DRUM MASTER SENSOR ADJUSTMENT............................3-21
3.6.10 MASTER END SENSOR ADJUSTMENT .....................................3-22
3.7 PAPER FEED..........................................................................................3-23
3.7.1 PICK-UP ROLLER / PAPER FEED ROLLER / FRICTION PAD.....3-23
3.7.2 PAPER SEPARATION PRESSURE ADJUSTMENT......................3-24
3.7.3 PAPER WIDTH DETECTION BOARD ...........................................3-25
3.8 PRINTING ...............................................................................................3-26
3.8.1 PRESS ROLLER ............................................................................3-26
3.8.2 PRESS ROLLER RELEASE LEVER ADJUSTMENT .....................3-27
3.8.3 PRINTING PRESSURE ADJUSTMENT.........................................3-28
3.9 DRUM......................................................................................................3-29
3.9.1 PREPARATION ..............................................................................3-29
3.9.2 CLOTH SCREEN............................................................................3-29
3.9.3 CLAMPER / METAL SCREEN .......................................................3-31
3.9.4 INK PUMP ADJUSTMENT .............................................................3-33
3.9.5 INK ROLLER UNIT / INK ROLLER ONE-WAY CLUTCH ...............3-35
3.9.6 DOCTOR ROLLER GAP ADJUSTMENT .......................................3-36
3.9.7 INK DETECTION ADJUSTMENT ...................................................3-37
3.9.8 MAIN MOTOR PULLEY POSITION................................................3-37
3.9.9 MAIN DRIVE TIMING BELT ADJUSTMENT ..................................3-37
3.9.10 INK IDLING MOTOR /INK IDLING ROLLER HP SENSOR ..........3-38
3.9.11 EXIT PAWL ADJUSTMENT .........................................................3-39
3.10 PAPER DELIVERY................................................................................3-41
3.10.1 PAPER DELIVERY UNIT .............................................................3-41
3.10.2 DELIVERY BELT / PAPER EXIT SENSOR..................................3-41
3.10.3 EXIT PAWL ADJUSTMENT .........................................................3-42
3.10.4 AIR PUMP ADJUSTMENT ...........................................................3-44
3.11 SPECIAL TOOLS ..................................................................................3-45
TROUBLESHOOTING
4. TROUBLESHOOTING ................................................................. 4-1
4.1 ERROR CODES........................................................................................4-1
4.2 ELECTRICAL COMPONENT DEFECTS ..................................................4-3
4.2.1 SENSORS ........................................................................................4-3
4.2.2 SWITCHES.......................................................................................4-5
4.2.3 LINES ...............................................................................................4-5
4.3 FUSE, LED, VR, DIP-SW, AND TP TABLES ............................................4-6
4.3.1 BLOWN FUSE CONDITIONS ..........................................................4-6
4.3.2 LED'S ...............................................................................................4-6
4.3.3 VR'S .................................................................................................4-6
4.3.4 DIP SWITCHES................................................................................4-7
C249/C264 ii SM