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TM 11-5820-890-30-5
Section IV. MAINTENANCE PROCEDURES
Subject
Para
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Operational Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Repair Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Disassembly for Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Replacement of Back Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22
Replacement of Control-Monitor Chassis (7A1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Replacement of Control-Monitor Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
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6-18. GENERAL.
This section includes the operational check and the repair procedures. The operational check is used to verify
the operation of a repaired control-monitor. It is also used to verify the symptom of a faulty control-monitor. It
will identify the troubleshooting chart to be used. When a bad module is identified, replace it using the procedure
in this section.
6-19. OPERATIONAL CHECK.
Perform the operational check found in paragraph 6-13 to verify the proper operation of the control-monitor.
6-20. REPAIR PROCEDURES.
Repair of the control-monitor consists of replacing a bad module.
A module is replaced by removing it and
installing a good one.
Procedures for doing this follow:
a.
General Instructions. The following instructions apply to all repair tasks.
1.
Remove all cables connected to the control-monitor.
2.
Inspect the control-monitor for damage.
Repair any obvious physical damage.
3.
Use the module extractor to remove the circuit card assemblies. It is included in the
maintenance tool kit. It is used as follows:
(a)
(b)
(c)
(d)
(e)
(f)
Locate the module to be removed.
Hook the module extractor through the two holes in the top corners of the
module.
Hold the module extractor with one hand. Rest the other hand on the control-
monitor with the fingers of the hand on top of the module to be removed.
Pull steadily with the module extractor until the module connector is free of
the parent board.
Remove the module.
Unhook the module extractor.
4.
Handle all modules carefully.
5.
Before installing a module, check the connectors or terminals for bent or broken pins.
Do not install if damaged.
6. Complete the operational check.
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