Minolta Di 620 Manual page 307

1155SBD000BA
1 SERVICE INSTRUCTIONS
1-1. PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS . . . . . . .D-1
1-2. INSTRUCTIONS FOR HANDLING THE PWBs WITH
MOS ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-3
1-3. HANDLING OF THE PC DRUM. . . . . . . . . . . . . . . . . . . . . . . . . .D-3
1-4. PARTS WHICH MUST NOT BE TOUCHED . . . . . . . . . . . . . . . .D-5
2 DISASSEMBLY/REASSEMBLY
2-1. DOORS, COVERS, AND EXTERIOR PARTS:
IDENTIFICATION AND REMOVAL PROCEDURES . . . . . . . . . .D-6
2-2. REMOVAL OF CIRCUIT BOARDS AND OTHER
ELECTRICAL COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . .D-9
2-3. PAPER TAKE-UP/TRANSPORT SECTIONS. . . . . . . . . . . . . . .D-11
1) Removal of the Paper Take-Up Unit . . . . . . . . . . . . . . . . . . .D-11
2) Replacement of the Paper Take-Up Clutch . . . . . . . . . . . . . .D-12
3) Replacement of the Paper Take-Up Roll, Paper Feed
Roll, and Paper Separator Roll Assy . . . . . . . . . . . . . . . . . . .D-13
4) Cleaning of the Vertical Transport Rollers . . . . . . . . . . . . . . .D-15
5) Replacement of the Vertical Transport Rollers . . . . . . . . . . .D-15
6) Removal of the Lift-Up Motor (Metric areas only) . . . . . . . . .D-16
7) Removal of the Synchronizing Rollers Unit . . . . . . . . . . . . . .D-17
8) Disassembly of the Synchronizing Rollers Unit . . . . . . . . . . .D-18
9) Cleaning of the Upper Transport Roller/Upper
Synchronizing Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-21
10) Cleaning of the Lower Transport Roller/Lower
Synchronizing Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-21
11) Cleaning of the Paper Dust Remover . . . . . . . . . . . . . . . . .D-21
12) Removal of the Suction Belts. . . . . . . . . . . . . . . . . . . . . . . .D-22
13) Disassembly of the Multi Bypass Unit . . . . . . . . . . . . . . . . .D-23
14) Removal of the 3rd Drawer . . . . . . . . . . . . . . . . . . . . . . . . .D-25
15) Removal of the 3rd Drawer Wires . . . . . . . . . . . . . . . . . . . .D-26
16) Cleaning of the 3rd Drawer Paper Empty Board
(PWB-E) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-28
17) Removal of the Paper Drawer (Inch areas only) . . . . . . . . .D-28
18) Removal of the Lift-Up Motor (Inch areas only) . . . . . . . . . .D-29
2-4. OPTICAL SECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-30
1) Sliding Out the IR Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-30
2) Removal of the CCD Unit . . . . . . . . . . . . . . . . . . . . . . . . . . .D-31
3) Removal of the PH Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-32
4) Cleaning of the Original Glass. . . . . . . . . . . . . . . . . . . . . . . .D-33
CONTENTS
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