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TM 11-5820-890-30-5
Section IV. MAINTENANCE PROCEDURES
Subject
Para
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-15
Operational Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-16
Repair Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-17
Visual Inspection of Battery Tray Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-18
Visual Inspection of Battery Tray Subassembly (12A1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-19
Replacement of Mounting Plate Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-20
Replacement of Battery Tray Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-21
Replacement of Battery Tray Circuit Card Assembly (12A1A1) . . . . . . . . . . . . . . . . . . . . . 15-22
Replacement of Connector Board Circuit Card Assembly (12A1A2) and P1 Connector . 15-23
Replacement of R1 Resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-24
Replacement of VR1 Zener Diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-25
Replacement of J1 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-26
Replacement of U1 Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-27
Replacement of Terminal Lugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-28
Replacement of Wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-29
Replacement of DS1 Lamp Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-30
Replacement of Seal Screw. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-31
Replacement of S1 Pushbutton Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-32
Replacement of Battery Tray Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-33
Replacement of Battery Box Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-34
Replacement of Threaded Screw Inserts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-35
15-15. GENERAL.
Page
15-18
15-18
15-18
15-19
15-20
15-22
15-23
15-24
15-25
15-26
15-27
15-28
15-29
15-31
15-32
15-33
15-34
15-35
15-36
15-39
15-40
This section includes the operational check, repair instructions, and visual inspection procedures. The
operational check is used to verify the operation of a repaired battery tray. lt is also used to verify the symptom of
a faulty battery tray. It will identify the troubleshooting chart to be used. When a bad module is identified, replace
it using the procedure in this section.
15-16. OPERATIONAL CHECK.
Perform the operational check found in paragraph 15-11 to verify proper operation of the battery tray.
15-17. REPAIR INSTRUCTIONS.
The following instructions apply to all repair tasks unless otherwise noted in the procedure.
a.
Begin procedure with the battery tray pushbutton switch S1 out (not pushed). Do not press the S1
pushbutton unless directed to in order to check its operation.
b.
Disconnect any external cables connected to the battery tray.
c.
Inspect the battery tray. Replace the battery tray case if the battery tray is physically damaged, such
as with a broken connector. The visual inspection procedures are in paragraphs 15-18 and 15-19.
CAUTION
Steps marked with must be performed exactly as written. They are critical in maintaining
the nuclear hardness of the battery tray. Seals must not be damaged. All screws must be
torqued to the limits specified in the replacement procedures.
d.
The battery tray must be tested after replacement of a module.
15-18
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