Ricoh B079, Service Manual

Page: 16 / 948

B079/B082 iv SM
3.16 PAPER FEED.........................................................................................3-62
3.16.1 IDLE ROLLER DUST BLADE ........................................................3-62
3.16.2 COVER REPLACEMENT ..............................................................3-63
3.16.3 BY-PASS PAPER FEED AND PICK-UP ROLLER REPLACEMENT
........................................................................................................3-64
3.16.4 BY-PASS SEPARATION ROLLER REPLACEMENT ....................3-65
3.16.5 PAPER END SENSOR AND PICK-UP SOLENOID
REPLACEMENT............................................................................3-66
3.16.6 PAPER SIZE SENSOR BOARD REPLACEMENT ........................3-67
3.16.7 BY-PASS TABLE REMOVAL ........................................................3-68
3.16.8 PAPER FEED CLUTCH REPLACEMENT.....................................3-69
3.16.9 REGISTRATION ROLLER DUST BLADE .....................................3-70
3.17 DUPLEX UNIT........................................................................................3-71
3.17.1 DUPLEX COVER REMOVAL ........................................................3-71
3.17.2 DUPLEX ENTRANCE SENSOR REPLACEMENT........................3-72
3.17.3 DUPLEX EXIT SENSOR REPLACEMENT ...................................3-73
3.18 DRIVE AREA..........................................................................................3-74
3.18.1 REGISTRATION CLUTCH AND TRANSFER BELT CONTACT
CLUTCH ........................................................................................3-74
3.18.2 MAIN MOTOR ...............................................................................3-75
3.18.3 TONER SUPPLY MOTOR.............................................................3-76
3.19 PRINTED CIRCUIT BOARDS ................................................................3-77
3.19.1 HIGH VOLTAGE POWER SUPPLY ..............................................3-77
3.19.2 IOB ................................................................................................3-78
IOB DIP Switch Settings (SW101) ......................................................3-79
3.19.3 BICU BOARD ................................................................................3-80
3.19.4 PSU ...............................................................................................3-80
3.20 HARD DISK, CONTROLLER BOARD ....................................................3-81
3.21 COPY ADJUSTMENTS: PRINTING/SCANNING ...................................3-82
3.21.1 PRINTING......................................................................................3-82
Registration - Leading Edge/Side-to-Side...........................................3-82
Blank Margin .......................................................................................3-83
Main Scan Magnification.....................................................................3-83
Parallelogram Image Adjustment ........................................................3-84
3.21.2 SCANNING....................................................................................3-85
Registration: Platen Mode...................................................................3-85
Magnification.......................................................................................3-85
3.21.3 ADF IMAGE ADJUSTMENT ..........................................................3-86
Registration.........................................................................................3-86
3.21.4 TOUCH SCREEN CALIBRATION .................................................3-87
TROUBLESHOOTING
4. TROUBLESHOOTING ................................................................. 4-1
4.1 SERVICE CALL CONDITIONS ..................................................................4-1
4.1.1 SUMMARY ........................................................................................4-1
4.1.2 SC CODE DESCRIPTIONS ..............................................................4-2
4.2 ELECTRICAL COMPONENT DEFECTS..................................................4-24