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General Notes on Disassembly
Caution
Follow the steps of all disassembly procedures in the order given to avoid
damaging printer components.
1.
Before servicing the printer, switch OFF the printer power, wait until the printer
completely shuts down, and disconnect the power cord from the wall outlet.
2.
Wear an electrostatic discharge wrist strap to help prevent damage to the sensitive
electronics of the printer circuit boards.
3.
Upon reassembly of printer components, be sure the components are all in their
home positions, otherwise damage to the printer will occur. See Chapter 6
Adjustments, Home Position (page 6-2) for information on the home positions.
Special Notes Regarding Screws Used in This Equipment.
Screws in plastic are torqued to 12 in. lbs., metal to 15 in. lbs., unless otherwise
specified.
Do not over torque the screws threaded into plastic parts.
Always use the correct type and size screw: coarse thread, brass-colored screws
into plastic and fine thread, silver-colored screws into metal.
Using the wrong screw can damage tapped holes.
Do not use excessive force to remove or install either a screw or a printer part.
If using a power driver to install a screw into plastic, start the screw by hand.
If you strip out threads in the plastic chassis, a silver-blue-tinted thread repair
screw (included in the hardware kit) can be used to correct the problem.
If you remove a silver-blue-tinted thread repair screw during disassembly, replace
the screw the same location or additional damage to the printer can occur.
Warning
Unplug the AC power cord from the wall outlet before removing any printer part.
Notations in the Disassembly Text
The notation "(item X)" points to a numbered callout in the illustration
corresponding to a part or step being performed.
The notation "PLX.X.X" indicates that this component is listed in the Service
Parts List.
Bold arrows in an illustration show direction of movement when removing or
replacing a component.
Service Parts Disassembly
8-3
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Troubleshooting
