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TM 11-5820-890-30-5
Section IV. MAINTENANCE
Subject
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operational Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement of Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement of PA Mount Chassis . . . . . . . . . . . . . . . . . . . . . .
Lamp DS1 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9-13. GENERAL.
PROCEDURES
Para
Page
. . . . . . . . . . . . . . . . . . . . . . 9-13
9-16
. . . . . . . . . . . . . . . . . . . . . . 9-14
9-16
. . . . . . . . . . . . . . . . . . . . . . 9-15
9-16
. . . . . . . . . . . . . . . . . . . . . . 9-16
9-19
. . . . . . . . . . . . . . . . . . . . . . 9-17
9-20
. . . . . . . . . . . . . . . . . . .
This section includes the operational check and the repair procedures. The operational
. . 9-18
9-20
check is used to verify
the operation of a repaired PA mount. It is also used to verify the symptom of a faulty PA mount. It will identify the
troubleshooting chart to be used. When a bad module is identified, replace it using the procedure in this section.
9-14. OPERATIONAL CHECK.
Perform the operational check found in paragraph 9-8 to verify the proper
9-15. REPAIR PROCEDURES.
The following instructions apply to all repair tasks unless otherwise noted in
parts location.
a.
Begin procedure with PA mount switch CB1 set to OFF.
b.
Disconnect any external cables connected to PA mount.
operation of the PA mount.
the procedure, See figure
c.
Inspect PA mount. Replace PA mount chassis if it is physically damaged, such as with a
connector.
d.
PA mount must be tested after replacement of a module. See paragraph 9-8 for operational
CAUTION
9-4 for
broken
check.
Steps marked with must be performed exactly as written. They are critical in maintaining
the nuclear hardness of the PA mount. Seals must not be damaged. All screws must be torqued
to the limits specified in Appendix B.
9-16
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