FAULT FINDING AND REPAIR
4-38 20509 Issue 7 Jan 2018
Replacing the Motherboard
CAUTION: Anti-static precautions must be observed.
(1) Remove the PCBs.
(2) Note the wire connections on the motherboard, then remove them
and the other connectors.
(3) Lift out the motherboard after removing the eight securing screws and
nylon washers.
(4) Note the positions of the switches in SW1, SW2, SW3 and SW4 and
set these switch positions into the new motherboard.
(5) Fit the motherboard and PCBs in reverse to their removal.
SK3 SK1
SK2SK4
F1
F2
3F4F
SK5
Screw
Nylon
Washer
Screw
Nylon
Washer
F5
SW1 SW3 SW2 SW4
PL4
PL1
RL1
PL5
PL8
PL7
PL6
PL2
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