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188
PLANAR BOARD B1
Removal and Replacement
CAUTION
The logic on planar board B1 can be damaged by
electrostatic discharge. Do not touch any conducting
(metal) parts. Hold the planar by the plastic frame when
moving it.
Before you take the new planar from the bag, hold the
bag and touch the machine frame with your hand. This
removes any static from you and the planar.
Ensure that the component side of the planar is up
when you put the planar on any surface.
188
Remove. Replace,
Adjust
1.
2.
3.
4.
5.
6.
•
-
.
Power off.
Remove the rear cover (110).
Disconnect the cables
II.
Remove the interposers.
Slide the power supply to the service position
(116).
Remove the planar and Its -frame
D
from the power
supply.
7.
Remove the plastic pins
fJ
that hold the planar board
to its frame.
8.
Remove the planar boardll·
9.
Ensure that jumpers for language group, cable
type, speed, and cable termination on the new
planar are the same as those on the old planar.
(Jumpers are shown on 106.)
10.
Reverse steps 1 through
8
to reinstall planar board
B1.
D fJ
II
Maintenance
5256 MIM
1-67
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