Control Board (Nns) - Oki ML420 Maintenance Manual

3.3.12 Control Board (NNS)

(1) Remove the upper cover (see 3.3.4 (1) – (5)).
(2) Remove two screws 1, and release the Control Board 2 and PCB sheet 5 by lifting
clamp 4.
(3) Disconnect all cables from Control Board 2.
(4) To install, follow the removal steps in the reverse order.
Note on installation:
(1) Insert one sensor lever 3 between sensor when installing the Control Board 2.
(2) Make sure that there is not any dust or oil on the connector contact section A. If it
is found, wipe it off by alcohol.
2
1
42113901TH01 Rev.3
4
2
4
A
5
3
Sensor
3
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