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5.7.5
A2 Module Removal
1. Perform the Preliminary Procedure as directed in Paragraph 5.7.1.
2. Remove the receiver bottom cover as directed in Paragraph 5.7.2.
3. Removethe six (6) screws and hardware which holds down the A2 module cover.
4. Remove the A2 module cover.
5. Disconnect eight-pin connect,or W21Pl from A2J2.
6. Disconnect 5MB connector W2Pl from A211.
7. Disconnect 5MB connector WIPI from J5 on the receiver frame.
8. Disconnect 5MB connector A3WIPl from A2J3.
9. Loosen and remove the six (6)screws and hardware which hold down the A2 module.
10. Lift out the A2 module tipping it slightly to avoid bumping the module against J5 and
the four
(4)
feed-through capacitors located on the side of the receiver frame.
CAUTION
Bumping J5 or the capacitors may cause damage to the A2
module printed circuit track or components.
5.7.6
A2 Module Installation
Installation of the A2 module is the reverse of removal with the following notes:
I. Ensure cable W2PI is located near the notch in the receiver frame when installing the
module.
2. Ensure that the cable connected to W2PI (coming from the A7 module area) is routed
through the notch on the edge of the receiver frame. Failure to do so may result
in
dam-
age to
~he
ca bJe.
5.7.7
A3 Module Removal
1. Perform the Preliminary Procedure as directed in Paragraph 5.7.1.
2. Remove the receiver bottom cover as directed in Paragraph 5.7.2.
3. Using the pull-tab on the A3 module
cov~r,
carefully remove the A3 cover.
4. Disconnect eight-pin connector W22PI from A3J 1.
5. Disconnect 5MB connector A3W2PI from J6 on the receiver frame.
6. Disconnect 5MB connector W4PI from A3J2.
7. Loosen and remove the six (6) screws and hardware which hold down the A2 module
cover.
5-19
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