TM 1-1270-476-30
4-117
4-5. NIGHT SENSOR ASSEMBLY (NSA) REPAIR (cont)
CAUTION
• Do not try to bend flexible printed cable
unless heated. Do not overheat. To much
heat will damage printed cable.
• Flexible printed cable assemblies are easily
damaged if handled roughly. Use care when
• connecting/disconnecting connectors and
moving cable assemblies in any way.
NOTE
• A heat source of approximately 200°F is
best to make cable soft and bend easily.
Holding heat gun approximately 5 inches
away from the point you want to heat will
usually apply about 200°F.
• Flexible printed cables are stacked in
postamplifier. One or more cables may have
to be removed to access the lower ones in
each amplifier.
c. Heat and carefully move flexible printed
cable assembly out of the way.
d. Remove faulty CCA using printed circuit
board extractor.
INSTALLATION
e. Install CCA.
CAUTION
Do not try to bend flexible printed cable unless
heated. Do not overheat. To much heat will
damage printed cable.
NOTE
• A heat source of approximately 200°F is
best to make cable soft and bend easily.
Holding heat gun approximately 5 inches
away from the point you want to heat will
usually apply about 200°F.
• If replacing CCA A10 only, go to step h.
f. Starting with replacement CCA, do the
following for each CCA up to and including
CCA A9 (1).
(1) Carefully return flexible printed cable
assembly to its original position.
(2) Connect connector (3).
(3) Tighten two screwlocks (2).
g. Have installation inspected.
h. Remove old corrosion inhibitive sealing and
coating compound from mounting hardware
(para 2-6).
i. Apply corrosion inhibitive sealing and
coating compound to mounting hardware
(para 2-6). Use class 1A application.
j. Install preamplifier cover (1 above).
END OF TASK
