Ericsson MASTR III 344A3168P1, Maintenance Manual

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PARTS LIST
TROUBLESHOOTING PROCEDURE
SYMPTOM PROCEDURE
NO CHARGING OUTPUT VOLTAGE CHECK THE FOLLOWING:
PROPER LINE VOLTAGE
OPEN FUSE F1
OPEN TRANSISTOR A1Q4
BAD I.C. A1U3
SHORTED A1Q7
OPEN THERMISTOR A2S1
BAD RELAY A1K1
BAD I.C. A1U4
BAD I.C. A1U7
OUTPUT VOLTAGE TOO HIGH
(GREATER THAN 14 Vdc) CHECK THE FOLLOWING:
SHORTED TRANSISTOR A2Q1
SHORTED TRANSISTOR A2Q2
SHORTED TRANSISTOR A2Q3
BAD POTENTIOMETER A1R12
BAD I.C. A1U7
OUTPUT VOLTAGE TOO LOW
(GREATER THAN 1 Vdc
LESS THAN 13.6 Vdc) CHECK THE FOLLOWING:
LOAD TOO HIGH (IN FOLDBACK)
BAD POTENTIOMETER A1R12
BAD I.C. A1U3
SHORTED A1C4
BLOWN FUSE F1 CHECK THE FOLLOWING:
SHORTED VARISTOR A1RV1
SHORTED TRANSFORMER T1
SHORTED TRANSFORMER T2
SHORTED TRANSFORMER A1T3
SHORTED DIODE A1D1
SHORTED DIODE A1D2
SHORTED DIODE A1D6
SHORTED DIODE A1D10
SHORTED CAPACITOR A1C1
SHORTED CAPACITOR A1C2
SHORTED CAPACITOR A1C3
SHORTED CAPACITOR A1C10
SHORTED CAPACITOR A1C18
BATTERY NOT SWITCHING TO SYSTEM
BACKUP CHECK THE FOLLOWING:
BAD RELAY A1K1
BAD RELAY A1K2
OPEN TRANSISTOR A1Q6
BAD I.C. U5
BAD I.C. U6
SHORTED TRANSISTOR A1Q5
STATUS ERROR FLAG NOT PRESENT CHECK THE FOLLOWING:
LINE VOLTAGE TOO LOW
OPEN TRANSISTOR A1Q5
BAD I.C. A1U4
BAD I.C. A1U7
OPEN DIODE A1D9
SWITCHED GROUND NOT CONNECTED CHECK THE FOLLOWING:
LINE VOLTAGE TOO LOW
BAD RELAY A1K3
OPEN TRANSISTOR A1Q5
BAD I.C. A1U4
ANY OTHER FAULT CONSULT THE FACTORY
SYMBOL PART NO. DESCRIPTION
MIII AUTOMOBILE BATTERY KIT
344A3696G1
W1 19B801937P4 Power Cable
W2 19B801970P1 Power Cable
W3
W4
19B801970P3 Power Cable
W5 19B801970P4 Power Cable
W6 Not Used
W7 Not Used
W8 Not Used
1 344A3450G1 Hardware Kit
2 Not Used
3 Not Used
4 Not Used
MIII GEL CELL BATTERY KIT
344A3696G2
W1 19B801937P4 Power Cable
W2 19B801970P1 Power Cable
W3 Not Used
W4 Not Used
W5 Not Used
W6 19B801970P5 Power Cable
W7 19B801970P6 Power Cable
W8 19C327801G1 Harness
1 Not Used
2 344A3450G5 Hardware Kit
3 19B802073PI Rear support
4 19B802067P1 Cover
HARDWARE KIT
344A3450G1
1 7I60861P33 SPRING NUT
2 19A134011P2 SCREW
3 7160861P4 SPRING NUT
4 N145P1507B6 TAPPED SCREW
HARDWARE KIT
344A3450G5
1 7160861P33 SPRING NUT
2 19A134011P2 SCREW
I5 N403P16B6 LOCK WASHER
17 N80P16008B6 MACHINE SCREW
18 N403PI9B6 LOCK WASHER
19 N402P39B6 FLAT WASHER
20 N80P15012B6 MACHINE SCREW
21 N402P38B6 FLAT WASHER
*COMPONENTS, ADDED, DELETED OR CHANGED BY PRODUCTION CHANGES
BATTERY AND HARDWARE KITS
LBI-38625
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