.-
TM 5-5420-226-20-1
Symptom-28
DETAILED
TROUBLESHOOTING
PROCEDURE
+
VEHICLE
OPERATION
- HULL
POWER
(Continued)
Use extreme care when working with
circuit
459.
This
circuit
carries
battery voltage at all times, whether
MASTER BATTERY switch is ON or
OFF.
F-
‘ARN’NG~
After disconnecting
ground straps,
do not allow them to contact
any
metal surface.
Check MASTER BATTERY switch for continuity.
First Technician (Commander’s
Station)
l Install slave receptacle protective cap.
l Disconnect three battery ground straps (page 10-268).
Second Technician
(Operator’s Station)
l Displace master control panel (page 10-33).
l Set MASTER BATTERY switch ON.
l Disconnect control panel power harness connector
(CKT 459) from MASTER
BATTERY
switch.
.
Disconnect
control panel starting harness connector
(CKT 459A) from MASTER
BATTERY
switch.
l Set meter to OHMS X1 scale and “zero” meter, or use
STE/ICE
Test No. 91 (page 4-83).
l Connect red probe of meter to one contact of MASTER
BATTERY
switch.
‘
.
Connect black probe of meter to other contact of
MASTER
BATTERY
switch.
l Check if meter indicates continuity.
Does meter indicate continuity?
1
m
—
MASTER
BATTERY
(
SWITCH
MASTER
CONTROL
PANEL
(REAR VIEW)
h
1
l Replace MASTER BATTERY
switch
(page 10-43).
l Connect three battery ground
straps
(page 10-268).
TA107O72
.—
4-383
