For Okioffice44/Okifax 4100; General; Precautions For Parts Replacement; Mechanical Disassembly And Reassembly For Okioffice44/Okifax 4100 - Oki B 4100 Maintenance Manual

4. MECHANICAL DISASSEMBLY AND REASSEMBLY

FOR OKIOFFICE44/OKIFAX 4100

This chapter explains the procedures for replacement of assemblies and units in the field.
4.1

General

4.1.1 Precautions for Parts Replacement

(1) Before starting disassembly and reassembly, always 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
(a) NCU board
(Rev.3)
(b) LED print head
40055101TH Rev.4
DIP switches to be placed in the same position as on the removed board.
Refer to Chapter 8.
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. 27. (Refer to section
5.1) When the head label 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 width by the technical function No.28. (Refer to table 2.9.1, TF
No.28)
Adjustment
154 /