TM-9-6920-430-14

COOLANT RECHARGING UNIT, TRAINING GUIDED MISSILE SYSTEM M80 AND CHARGER, BATTERY PP-7309/T

TECHNICAL MANUAL; OPERATOR’S AND ORGANIZATIONAL DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL

AUGUST 1980

TM-9-6920-430-14 - Page 121 of 180

Table 3-4. Battery Charger Troubleshooting

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

3. TEST LAMP DOES NOT ILLUMINATE.

PRESS TO TEST

TM 9-6920-430-14

Guidance Chart (Continued)

IF LAMP DOES NOT ILLUMINATE IN TEST POSITION’ REPLACE LAMP WITH

SPARE IN LID COVER.

4. TEST LAMP ILLUMINATES IN TEST POSITION FOR ALL COMPARTMENTS

BUT ONE

CHECK SUSPECT COMPARTMENT FOR DEFECTIVE BATTERY

REPLACE SUSPECT BATTERY WITH A KNOWN FULLY CHARGED

BATTERY FROM OPPOSITE COMPARTMENT. IF TEST LAMP

ILLUMINATES EITHER CHARGING CIRCUIT OR BATTERY IS

DEFECTIVE, PLACE SUSPECT BATTERY IN ANOTHER CHARGING

COMPARTMENT AND ALLOW BATTERY AMPLE TIME TO CHARGE

(16 HOURS). RETURN BATTERY TO SUSPECT COMPARTMENT AND

REPEAT TEST. IF TEST LAMP ILLUMINATES CHARGING CIRCUIT IS

DEFECTIVE.

REPLACE THE CHARGING CIRCUIT ASSEMBLY CARD IN ACCORDANCE

WITH PARA. 3-28a THROUGH 3-28g, PAGE 3-84.

IF TEST LAMP DOES NOT ILLUMINATE, ORIGINAL SUSPECT BATTERY

WAS DEFECTIVE.

5. HEATER CIRCUITS NOT WORKING.

CHECK AC HEATER 5 AMPERE FUSE.

VISUALLY INSPECT FUSE. IF FUSE IS OPEN, REPLACE WITH SPARE IN FRONT

PANEL ASSEMBLY.

CHECK CABLE CONNECTION AT BATTERY CARRYING

CASE CONNECTOR.

IF CONNECTOR IS LOOSE TIGHTEN UNTIL SNUG TO ASSURE CONTACT

CLOSURE OF SAFETY SWITCH AT CONNECTOR RECEPTACLE.

M1416973A

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