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5.7.15
5.7.16
2. For ease of installation, install the second screw from the rear panel with its nylon
washer if installed (between the A6AI module and the mounting post) fIrst.
CAUTION
Failure to
install
the nylon washer (insulator) may cause electrical
damage to the A6 module.
A 7 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. Loosen and remove the single screw and hardware that holds down the A7 module
cover.
4. Using the pull-tab on the A 7 module cover, remove the A 7 module cover.
5. Discorinect ribbon connector Wl3Pl from A7Jl.
6. Disconnect 5MB connector W3Pl from A7J2.
7. Disconnect 5MB connector W'lJ?2 from A7J4.
8. Loosen and remove the eleven (11) screws and hardware, and the nylon mounting
post (from which the A 7 module cover screw was removed in Step 3 above) which
holds down the A7 module.
.
NOTE
The screw through A7U39 is not a module holddown screw. The
screw through regulator A 7Q4 is a module holddown screw. When
removing the screw through A 7Q4, take care not to lose the mica
insulator which fIts between A 7Q4 and the A 7 module.
CAUTION
Do not overtighten the screw through A7Q4 voltage regulator.
Overtightening the screw may cause failure of the regulator.
9. Lift out the A 7 module.
A 7 Module Installation
Installation of the A7 module is the reverse of removal with the following notes:
1. When positioning the A 7 module for installation, ensure that ribbon connector A 751
is located next to the cutout in the receiver frame.
When installing the screw through A7Q4, ensure that the mica insulator is present
between A 7Q4 and the A 7 module, and is centered on the mounting hole.
5-23
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