T M 9 - 4 9 3 1 - 3 8 1 - 1 4 & P - 2
F R A M E 18
Install TB1 or TB2:
NOTE
To install circuit card assembly TB1 (1), do StePS 1, 2,
and 3. To install terminal board assembly TB2 (8), do
steps 1 through 6.
Read paragraph 2-4 on soldering wires before doing any
work.
1 .
Line up holes in circuit card assembly TB1 (1) with holes in chassis (2) and screw in
four machine screws (3), new lockwashers (4), flat washers (5), and electrical-
mechanical posts (6) with screwdriver and wrenches.
2.
Using torque screwdriver and bit, torque screws (3) between 5 and 6 pound-inches
(0.57 and 0.68 Newton meter).
3. Solder wires (7) to circuit card assembly TB1 (1).
4.
Solder wires (7) to terminal board TB2 (8) and put Iacing tape on wires (7) as needed.
5. Line upholes interminal board TB2 (8) with holes in chassis (2) and screw in four
machine screws (9), four new Iockwashers (10), eight flat washers (11), and four plain
hexagon nuts (12) with screwdriver and wrench.
6.
Using torque screwdriver and bit, torque screws (9) between 5 and 6 pound-inches
(0.57 and 0.68 Newton meter).
Follow-on Maintenance:
1. Install cover; refer to task 13.
2. Install electrical load bank A5; refer to task 16.
3. install thermal system test controller; refer to para. 2-5, task 8.
4. Install thermal system test controller case cover; refer to volume 1, para. 4-18.
TASK 12 ENDS HERE
Volume IV
Para. 2-11, Task 12
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