Mechanical Disassembly And Reassembly; Precautions For Parts Replacement - Oki OKIFAX4550 Maintenance Manual

4.

MECHANICAL DISASSEMBLY AND REASSEMBLY

General
The section explains the procedures for replacement of parts, assemblies, and units in the field.
Only the disassembly procedures are explained here. For reassembly, reverse the disassembly
procedure.
4.1

Precautions for Parts Replacement

Do Not
Touch !
HIGH VOLTAGE
(1) Before starting to replace parts, remove the AC cord.
(a) Remove the AC cord in the following sequence:
1. Turn off ("o") the power switch of the machine.
2. Disconnect the AC inlet plug of the AC cord from the AC receptacle.
3. Disconnect the line cable from the machine.
(b) Reconnect the machine in the following procedure:
1. Connect the AC cord and line cable to the machine.
2. Connect the AC inlet plug to the AC receptacle.
3. Turn on ("l") the power switch of the machine.
41309401TH Rev.4
DANGER
You may be subjected to high-voltage electric shock by touching the
following parts without an insulating material:
a. High-voltage unit PC board
b. Low-voltage PC board
c. Contact ass'y
d. Power supply unit
* The high voltage risk may continue for about 3 days after power-off.
* Never touch the power supply unit pattern.
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