TM
5-5420-226-20-1
Symptom-74
DETAILED
TROUBLESHOOTING
PROCEDURE
.T
SUPPORT
SYSTEM
- PERSONNEL
HEATER
(Continued)
Check heater to basket disconnect
harness (CKT 405)
at personnel
heater
for electrical
power.
Second
Technician
(Operators
Station)
l Set HEATER
MASTER
switch
OFF.
First
Technician
(Personnei
Heater)
l Disconnect
heater
to
basket
disconnect
harness
connector
from
personnel
heater,
l Set multimeter
to measure
18 to 30 volts dc, or use STE/
ICE Test
No,
89 (page
4-81).
l Connect red probe of meter to contact D (CKT 405) of
heater to basket disconnect
harness
connector
and black
probe
to ground,
Second
Technician
(Operators
Station)
l Set HEATER
MASTER
switch
ON,
First
Technician
(Personne]
Heater)
l Check if meter indicates
18 to 30 volts dc.
Does meter
indicate
18 to 30 volts dc?
1
m
aoi
o
-
T
+0
TO VEHICLE
GROUND
\
PERSONNEL
HEATER
l Check
basket-control
panel
heater
harness
(CKT
405)
at
basket
disconnect
for
@ec-
trical power.
TA107395
4-706