Precautions For Parts Replacement - Oki OKIOFFICE 84 Service Manual

4.1 Precautions for Parts Replacement

1
Before starting disassembly and reassembly, always turn the AC power switch OFF, and pull
out the AC plug.
Note:
Unplug the AC power cord from the wall outlet first and then from the facsimile.
2
Do not try to disassemble as long as the facsimile is operating normally.
3
Do not remove unnecessary parts: Try to keep disassembly to a minimum.
4
When disassembling, follow the prescribed sequence. Otherwise, parts may be damaged.
5
Since screws and small parts are likely to be lost, they should temporarily be attached to their
original positions.
6
When handling items such as printed circuit boards, do not wear gloves that are likely to
generate static electricity.
7
Using a wrist band connected to the ground will protect semiconductors on printed circuit
boards from damage by the static electricity.
8
Do not place printed circuit boards directly on the equipment or on the floor.
Board or Part Adjustment
(a) NCU board - DIP switches to be placed in the same position as on the removed board.
Note:
The DIP switches setting is subject to change by PTT parameters. WN5, DN5 and FN5
board (Except for USA/Canada version).
(b) LED print head - When the rank marking of the replaced LED print head (new part) is the
same
as that of the used LED print head (old part), you do not always have to set the LED print head
strobe time by the technical function No. 26, and the LED printhead width by the technical
function No. 27 (Refer to table 2.9.1).
Copyright 1998, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner
Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Guide OKIOFFICE 84
Chapter 4 Disassembly
Page: 106