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TM 55-6695-220-13&P
3-17.
CIRCUIT BOARDS-- INSPECT/REPLACE.
3-17
This task covers:
Inspect and Replace.
INITIAL SETUP
Personnel Required
Test Equipment
35H Calibration Repair Specialist
ANGSN 286
Tools
Equipment Condition
Aircraft Electrician's Tool Kit
Para. 3-13.
JTK-17
Condition Description
Panel Assembly removed
1. INSPECT.
a. Service shall be limited to cleaning surface with damp soft cloth and resoldering any broken copper trace.
b. Inspect board for broken copper trace
2. REPLACE.
a. Removal.
(1) Use medium screwdriver to remove four machine screws securing printed circuit boards (PC) to instrument
panel standoffs (See Figure 3-12).
(2) Lay back the two boards so that both PC-1 and PC-2 are exposed for unsoldering.
(3) Unsolder the wires at the particular circuit that is to be replaced.
(4) Mark each wire with a tape that corresponds to notation on the PC board.
b.
Installation.
(1) If a marker is lost the Wiring Diagram in FO-1 can be consulted to determine where a given wire originates
for resoldering.
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