Disassembly; Precautions For Disassembly/Reassembly; Precautions When Removing Circuit Boards - Xerox WorkCentre PE120 Service Manual

5

Disassembly

5.1 Precautions for Disassembly/Reassembly

Use only approved Xerox spare parts. Ensure that
the part number, product name, any voltage,
current or temperature ratings are correct. Failure
to do so could result in damage to the printer,
circuit overload, fire or electric shock.
Do not make any unauthorized changes or
additions to the printer, this could cause the printer
to malfunction and create electrical shock or fire
hazards.
When disassembling the printer, note where each
screw goes. Using the wrong screw could lead to
printer failure, short circuits, or electrical shock.
Do not disassemble the laser unit. Once it is
disassembled dust is admitted to the mirror
chamber and will seriously degrade print quality.
There are no serviceable parts inside.
Regularly check the condition of the power cord,
plug and socket. Bad contacts could lead to
overheating and fire. Damaged cables could lead to
electric shock or component malfunctions.
Caution
Many of the parts are
held in place with
plastic latches. The
latches break easily;
Remove them
carefully. To remove
such parts, gently pull
the hook end of the
latch away from the
part where it is latched.
Caution
To prevent damaging the toner cartridge and
degrading print quality, protect the toner cartridge
from light when removing it from the printer.
5.1.1 Precautions When Removing Circuit
Boards
Static electricity can damage a board, follow the ESD
precautions in Section 1 of this manual when handling
or storing a board.
Precautions when moving and storing boards:
Precautions when replacing boards:
Precautions when checking boards:
Service Manual
Place boards in an approved anti-static
discharge bag.
Do not store a board where it is exposed to
direct sunlight.
Disconnect power connectors first, before
disconnecting other cables.
Do not touch any soldered connections,
connector terminals, or other electronic parts
when handling insulated parts.
Before touching a board, touch a grounded
area on the printer chassis to discharge any
static electrical charge on the body or wear an
anti-static wrist strap.
Do not touch the board with your bare hands or
metal objects, this can create a short circuit or
cause an electrical shock. Take extra care when
handling boards containing sensors, motors or
lamps as they may get hot.
Take care when fitting, or removing, screws.
Check for hidden screws. Always ensure that
the correct screw is used. When toothed
washers are removed, ensure they are refitted
in their original positions
Disassembly
5-1