Xerox PHASER 7500, Service Manual

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8-8 Phaser 7500 Printer Service Manual
Service Parts Disassembly
Fastener Types
The following table lists the primary types of Posi-Drive screws used to assemble
the printer. The procedures provide dimensional specifications for screws being
removed.
Caution
Use care when installing self-tapping screws 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. Failure to properly align or
over tighten the screw can result in damage to previously tapped threads.
Always use the correct type and size screw. Using the wrong screw can
damage 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 1. Silver colored.
2. Screw thread is coarse
compared to metal screw.
3. Screw tip is thin.
Self-
tapping,
plastic, with
flange 1. Black colored.
2. Screw thread is coarse
compared to metal screw.
3. Screw has a flange.
4. Screw tip is thin.
Sheet
Metal, silver 1. Silver colored.
2. Diameter is uniform.
Sheet
Metal, with
flange 1. Silver colored.
2. Screw has a flange.
3. Diameter is uniform.
Sheet
Metal, silver
with lock
washer 1. Silver colored.
2. Includes a toothed
washer.
3. Diameter is uniform.
4. Used for grounding
terminals.
Parts etc.
Plastic
Coarse
Parts etc.
Plastic
Coarse
Parts etc.
Sheet
Metal
Parts etc.
Sheet
Metal
Parts etc.
Sheet
Metal