CONTENTS
3 DIS./ASSEMBLY1 OUTLINE3 DIS./ASSEMBLY2 UNIT EXPLANATION3 DIS./ASSEMBLY3 DIS./ASSEMBLY
MODEL MANUAL REVISED EDITION DATE PAGE METHOD
SERVICE MANUAL Dec. 2003
7155/7165/7255/7272
- REPLACEMENT
4
[2] Installing the Coupling ............................3-E-2
[3] Removing, Cleaning, and Reinstalling
the Drum.................................................3-E-3
[4] Removing and Reinstalling the Separation
Claws and Separation Claw Solenoid.....3-E-4
[5] Removing and Reinstalling the Toner
Control Sensor Board.............................3-E-6
CORONA UNIT......................................................3-F-1
[1] Screws that Must not be Removed.........3-F-1
[2] Removing and Reinstalling the Charging
Corona Unit ............................................3-F-1
[3] Removing and Reinstalling the Charge
Control Plate...........................................3-F-2
[4] Replacing the Charging Wires................3-F-2
[5] Removing and Reinstalling the Charging
Wire Cleaning Unit.................................3-F-3
[6] Removing and Reinstalling the PCL.......3-F-3
[7] Cleaning the Charging Corona
Unit/PCL .................................................3-F-4
[8] Removing and Reinstalling the Transfer/
Separation Corona Unit ..........................3-F-4
[9] Removing and Reinstalling the Plunger
Prevention Plate .....................................3-F-5
[10] Replacing the Transfer/Separation
Wires and Transfer/Separation Wire
Cleaning Block........................................3-F-5
[11] Removing and Reinstalling the TSL
Unit .........................................................3-F-7
DEVELOPING UNIT ............................................. 3-G-1
[1] Screws that must not be Removed........ 3-G-1
[2] Removing and Reinstalling the
Developing Unit ..................................... 3-G-1
[3] Replacing the Developer ....................... 3-G-2
[4] Cleaning the Developing Unit
Bias shaft............................................... 3-G-3
TONER SUPPLY UNIT......................................... 3-H-1
[1] Replacing and Cleaning
the Toner Cartridge ............................... 3-H-1
CLEANING/TONER RECYCLE UNIT.....................3-I-1
[1] Removing and Reinstalling
the Cleaning Blade .................................. 3-I-1
[2] Removing and Reinstalling the Toner
Guide Roller (TGR)..................................3-I-2
PAPER FEED UNITS OF TRAYS 1 AND 2
(7155/7165)............................................................ 3-J-1
[1] Removing and Reinstalling the Paper
Feed Unit ................................................ 3-J-1
[2] Removing and Reinstalling the Paper
Feed Trays 1 and 2 ................................ 3-J-1
[3] Removing and Reinstalling the Paper
Feed Roller and Feed Roller Rubber...... 3-J-2
[4] Removing and Reinstalling the Double
Feed Prevention Roller Rubber .............. 3-J-2
[5] Replacing the Pre-registration and
Feed Clutches (MCs).............................. 3-J-3
[6] Replacing the Wires................................ 3-J-4
PAPER FEED UNITS OF TRAYS 1 AND 2
(7255/7272) ............................................................3-J-7
[1] Removing and Reinstalling the Paper
Feed Unit.................................................3-J-7
[2] Removing and Reinstalling the Paper
Feed Tray 1.............................................3-J-7
[3] Removing and Reinstalling the Paper Feed
Tray 2......................................................3-J-8
[4] Removing and Reinstalling the Paper
Feed Roller and Feed Roller Rubber ......3-J-9
[5] Removing and Reinstalling the Double
Feed Prevention Roller Rubber.............3-J-10
[6] Replacing the Pre-registration and
Feed Clutches (MCs) ............................3-J-11
[7] Replacing the Horizontal Conveyance MC/L
and/ R....................................................3-J-11
[8] Replacing the Wires..............................3-J-12
PAPER FEED UNIT OF TRAY 3 (7155/7165).......3-K-1
[1] Removing and Reinstalling the Paper
Feed Unit................................................3-K-1
[2] Removing and Reinstalling
Paper Feed Tray 3 .................................3-K-1
[3] Removing and Reinstalling the Paper
Feed Roller and Feed Roller Rubber ....3-K-2
[4] Removing and Reinstalling the Double
Feed Prevention Roller Rubber..............3-K-2
[5] Replacing the Pre-registration and
Feed Clutches (MCs) .............................3-K-3
[6] Replacing the Wires...............................3-K-4
PAPER FEED UNIT OF TRAY 3 AND 4
(7255/7272) ...........................................................3-K-7
[1] Removing and Reinstalling the Paper
Feed Unit................................................3-K-7
[2] Removing and Reinstalling
Paper Feed Tray 3and 4 ........................3-K-7
[3] Removing and Reinstalling the Paper
Feed Roller and Feed Roller Rubber ....3-K-8
[4] Removing and Reinstalling the Double
Feed Prevention Roller Rubber..............3-K-8
[5] Replacing the Pre-registration and
Feed Clutches (MCs) .............................3-K-9
[6] Replacing the Wires...............................3-K-9
BY-PASS FEED TRAY.......................................... 3-L-1
[1] Removing and Reinstalling the by-pass
Feed Tray.............................................. 3-L-1
[2] Replacing the Paper Feed Roller/Paper
Feed Roller Rubber................................ 3-L-1
[3] Replacing the Double Feed Prevention
Roller Rubber ......................................... 3-L-2
VERTICAL CONVEYANCE SECTION................. 3-M-1
[1] Removing and Reinstalling the Vertical
Conveyance Section ............................. 3-M-1
[2] Removing and Reinstalling the Vertical
Conveyance MC (MC11, MC12) ........... 3-M-1
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