TM-9-2350-311-20-2
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS
DECEMBER 1993
TM-9-2350-311-20-2 - Page 233 of 828
TM 9–2350–311–20–2
3–121
1.
Reconnect wire L1 at contact arm assembly
quick-disconnect.
2.
Disconnect wire L2 at contact arm assembly
quick-disconnect.
3.
Place one multimeter lead in wire L2 connector
and other lead on opposite side of wire L2.
4.
Check for continuity.
Is continuity present?
1.
Disconnect wire L1 from amplifier AM 1780/VRC.
2.
Place one multimeter lead in wire L1 connector
other lead on opposite side of wire L1.
3.
Check for continuity.
Is continuity present?
Repair or replace wire L1
(para 8–15).
Repair or replace wire L2
(para 8–15).
Replace amplifier
AM1780/VRC (para 8–16).
yes
no
E
CONTINUED FROM STEP C OR D
yes
no
F
END OF TASK
WIRE L1
WIRE L2
WIRE L1
+
–
–
+
WIRE L2
Back to Top
