ii
1-4. Laser Safety Label .................................................................................. D-4
1-5. Precautions for Handling the Laser Equipment ....................................... D-5
2. PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS ................................ D-6
2-1. Parts That Must Not be Touched ............................................................ D-6
(1) Red Painted Screws ........................................................................ D-6
(2) Variable resistors on board ............................................................. D-6
(3) Other Screws not Marked with Red Paint ....................................... D-6
3. DISASSEMBLY/REASSEMBLY ...................................................................... D-7
3-1. Identification of Exterior Parts and Removal Procedures for Them ........ D-8
3-2. Name/Removal of External Parts ............................................................ D-8
3-3. Removal of the Circuit Boards and Other Eletrical Components...................D-9
3-4. Removal of Ciruit Boards ........................................................................ D-10
(1) Removal of the Network Interface Card Board................................. D-11
(2) Removal of the Network Control Unit Board
D-11
(3) Removal of the Controller/Mechanical Control Board ..................... D-12
(4) Removal of the Control Panel ......................................................... D-12
(5) Removal of the Interface Board ....................................................... D-13
(6) Removal of the Plate NIC Board .................................................... D-14
(7) Removal of the Power Unit ............................................................. D-15
(8) Removal of the High Voltage Unit ................................................... D-16
3-5. Removal of Units ..................................................................................... D-17
(1) Removal of the ADF Unit ................................................................ D-17
(2) Removal of the PH Unit ................................................................... D-17
(3) Removal of the Automatic Document Feeder unit............................ D-21
(4) Removal of the Automatic Document Feeder Control...................... D-22
(5) Removal of the AFEIF Board ........................................................... D-22
(6) Removal of the Automatic Document Feeder Main Motor ............... D-23
3-6. Disassembly of the Main Drive Section ................................................... D-24
(1) Removal of the Main Motor ............................................................. D-24
(2) Removal of the Paper Empty Sensors ............................................ D-24
(3) Removal of the Paper Take-Up Solenoid ........................................ D-25
(4) Removal of the Paper Take-Up Clutch Gear ................................... D-27
(5) Removal of the Torque Limiter ........................................................ D-28
(6) Disassembly of the Fusing Unit ....................................................... D-29
4. ADJUSTMENTS .............................................................................................. D-31
4-1. Electrical/Image Adjustment .................................................................... D-31
(1) Accessing the Service Mode ........................................................... D-31
(2) Accessing the “ADJUST” Menu ....................................................... D-31
(3) Printing a Test Pattern .................................................................... D-31
(4) Margin Adjustment (Leading Edge/Trailing Edge/Both Sides) ........ D-32
(5) Printer’s Main Scanning Registration Adjustment ........................... D-33
(6) Printer’s Sub-Scanning Registration Adjustment ............................ D-34
(7) Leading Edge Tilt Adjustment .......................................................... D-35
(8) Automatic Document Feeder Sub-Scanning Zoom Ratio
Adjustment ..................................................................................... D-36
(9) Automatic Document Feeder Main-Scanning Registration
Adjustment ..................................................................................... D-37
