Xerox Phaser 3155 User Manual

							8
Chapter
Service Parts 
Disassembly
In this chapter...
•Overview
• Maintenance Items and Consumables
•Covers
• Disassembly Procedures
•Feeder
•Electrical
• Solenoids and Sensors
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							8-2Phaser 3140/3155/3160 Printer Service Manual
Service Parts Disassembly
Overview
This section contains the removal proced
ures for field-replaceable parts of the 
printer listed in the Parts List. In most cases, the replacement procedure is simply 
the reverse of the removal procedure. In some instances, additional steps are 
necessary and are provided for replacement of the parts. For specific assemblies 
and parts, refer to “Parts Lists” on page 9-4.
Note
Always use the correct type and size screw (page 8-5). Using the wrong screw 
can damage tapped holes. Do not use excessive force to remove or install 
either a screw or a printer part.
Standard Orientation of the Printer
When needed, the orientation of the printer is called out in the procedure as an aid 
for locating the printer parts. The following illustration identifies the Front, Rear, 
Left, and Right sides of the printer.
Rear
Right
Left
Front
s3160-101
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							Phaser 3140/3155/3160 Printer Service Manual8-3
Service Parts Disassembly
Preparation
Before you begin any removal and replacement procedure:
1. Wear an Electrostatic Discharge wrist strap to help prevent damaging to the  sensitive electronics of the print circuit boards.
2. Turn the printer power Off and disconnect the power cord from the wall outlet.
3. Disconnect all computer interface cables from the printer.
4. Remove the Paper Tray (page 8-7).
5. Open the Front Cover.
6. Remove the Print Cartridge (page 8-6).
Caution
Do not touch the OPC drum or expose the Print Cartridge to light for more 
than 5 minutes.
Note
Names of parts that appear in the re moval and replacement procedures may 
not match the names that appear in the Parts List. For example, a part called 
the Registration Chute Assembly in a removal procedure may appear on the 
Parts List as Assembly Registration Chute. When working on a removal 
procedure, ignore any prerequisite  procedure for parts already removed.
Caution
Many parts are secured by plastic tabs. Do not over flex or force these parts. 
Do not over torque screws threaded into plastic parts.
Wa r ni n g
Unplug the AC power cord from the wall outlet before removing any printer 
part.
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							8-4Phaser 3140/3155/3160 Printer Service Manual
Service Parts Disassembly
Notations in the Disassembly Text
• The notation “(item X)” points to a numbered callout in the illustration 
corresponding to the disassembly procedure being performed.
•The notation “PL X.X.X” indicates that this component is listed in the Parts List.
• Bold arrows in an illustration show direction of movement when removing or  replacing a component.
• The notation “(tap, plastic, 10 mm)” or  “(metal, 6 mm)” refer to the type of 
screw being removed. 
Note
Provides information specific to the replacement of parts or assemblies.
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							Phaser 3140/3155/3160 Printer Service Manual8-5
Service Parts Disassembly
Fastener Types
The following table lists the primary types of Posi-Drive screws used to assemble 
the printer. The procedures provide dime
nsional specifications for screws being 
removed.
Caution
Use care when installing self-tapping sc rews in plastic. To properly start the 
screw in plastic, turn the screw counter-clockwise in the hole until you feel the 
screw engage the threads, then tighten as usual. Always use the correct type 
and size screw and properly align the screw to prevent damaging the tapped 
holes. Do not use excessive force to remove or install either a screw or a printer 
part.
Posi-Drive Screw Types used in the Printer 
Type Application Shape Characteristics
Self-tapping,
plastic, black 1. Black colored.
2. Screw thread is coarse 
compared to metal screw.
3. Screw tip is thin.
Self-tapping,
plastic, silver 1. Silver colored.
2. Screw thread is coarse 
compared to metal screw.
3. Screw tip is thin.
Self-tapping,
plastic with 
flange, silver 1. Silver colored.
2. Screw thread is coarse 
compared to metal screw.
3. Screw tip is thin. Screw has  a flange.
Sheet Metal, 
silver 1. Silver colored.
2. Diameter is uniform.
Parts etc.
Plastic
Coarse
Parts etc.Plastic
Coarse
Parts etc.
Plastic
Coarse
Parts etc.Sheet
Metal
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							8-6Phaser 3140/3155/3160 Printer Service Manual
Service Parts Disassembly
Maintenance Items and Consumables
Maintenance items include the Transfer Roller, Fuser, Pick Up Roller, and Tray. The 
Print Cartridge is the only consumable item.
Print Cartridge
PL1.0.12
Caution
Do not touch the OPC drum or expose the Print Cartridge to light for more 
than 5 minutes.
1. Open the front cover.
2. Pull the Print Cartridge out.
s3160-094
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							Phaser 3140/3155/3160 Printer Service Manual8-7
Service Parts Disassembly
Paper Tray
PL10.0
1. Pull the Tray out of the printer.
s3160-014
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							8-8Phaser 3140/3155/3160 Printer Service Manual
Service Parts Disassembly
Transfer Roller
PL1.0.8
Caution
Do not touch the surface of the Transfer Roller.
1. Open the Front Cover.
2. Take out the Print Cartridge (page 8-6).
3. Remove the Laser Unit (page 8-30).
4. Take off the Transfer Roller by releasing the right side from the hook.
Caution
Use a screwdriver to gently push on the hook while using care to not break the 
hook.
Replacement Note
When replacing the Transfer Roller, wrap a sheet of paper around it to avoid 
touching the roller.
s3160-104
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							Phaser 3140/3155/3160 Printer Service Manual8-9
Service Parts Disassembly
Pick Up Roller
PL8.0
1. Remove the Paper Tray.
2. Turn the printer over.
3. Remove 1 screw (silver, 6 mm, plastic, tap). 
4. Use a flat screwdriver to carefully lift the tab off of the Pick Up Roller.
s3160-043
s3160-044
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							8-10Phaser 3140/3155/3160 Printer Service Manual
Service Parts Disassembly
5. Rotate the Pick Up Roller and lift it off the shaft.
Replacement Note
The following illustration shows how the Pick Up Roller is attached to the Feed 
Roller Shaft.
s3160-045
Feed Roller Clip
Feed Roller Shaft
Feed Roller
s3160-046
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