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TM 11-5820-890-30-5
Section IV. MAINTENANCE PROCEDURES
Subject
Para
Page
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-14
17-24
Operational Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-15
17-24
Repair Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-16
17-24
Replacement of
Replacement of
Replacement of
Replacement of
Replacement of
Rear Cover Assembly (15A1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-17
17-25
Case/Flexible Cable Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-18
17-26
Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-19
17-28
ON/OFF Switch (CB1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-20
17-29
POWER Lamp Holder (DS1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-21
17-30
17-14. GENERAL.
This section includes the operational check and the repair procedures. The operational check is used to verify
the operation of a repaired LS-671/VRC. It is also used to verify the symptom of a faulty LS-671/VRC. It will
identify the troubleshooting chart to be used. When a bad module is identified, replace it using the procedure in
this section.
17-15. OPERATIONAL CHECK.
Perform the operational check found in paragraph 17-9 to verify proper operation of the LS-671/VRC.
17-16. REPAIR INSTRUCTIONS.
The following instructions apply to all repair tasks unless otherwise noted in the procedure.
a.
b.
c.
d.
Begin procedure with the LS-671/VRC ON/OFF switch (CB1) set to OFF.
Disconnect any external cables connected to the LS-671/VRC.
lnspect the LS-671/VRC. Replace the LS-671/VRC case/flexible cable assembly, if the LS-671/VRC is
physically damaged, such as with a broken connector.
CAUTION
Steps marked with must be performed exactly as written. They are critical in maintaining
the nuclear hardness of the LS-671/VRC. Seals must not be damaged. All screws must be
torqued to the limits specified in the replacement procedures.
The LS-671/VRC must be tested after replacement of a module or component.
17-24
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