Install guide
ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Table 3-3.
Direct
Support
Troubleshooting
–
Continued
Malfunction
Probable
cause
Troubleshooting/corrective
action
17.
PS
BATT
‘FAIL
fault
indicator
a.
Batteries
are
low,
have
a.
Check
connections
to
cable
assemblies
DS
1
shows
white
failed,
are
disconnected,
or
W6and
Wll
fuse
in
cableW11
is
open
b.
Replace
cable
WI
1
if
fuse
is
open.
Refer
to
TM
5-6675-308-12
and/or
TM
08837A-12/l
c.
Check
that
PS
VEHICLE
circuit
breaker
CB2
is
ON
d.
Test
batteries
and
perform
battery
main-
tenance.
Refer
to
TM
9-6140-200-14
b.
Defective
PS
18.
CDU
ALARM
DS3
fails
to
a.
ALARM
DS3
failure
sound
during
lamp
test
Replace
PS.
Refer
to
para
3-13d
a.
b.
Measure
voltage
between
the
ALARM
DS3
leads
during
lamp
test.
Observe
polarity
marked
on
ALARM
DS3
or
lead
color
code
(red,
+;
black,
-)
If
voltage
is
greater
than
+4
V,
replace
CDU.
Refer
to
para
3-13a
b.
CDU
failure
Replace
CDU.
Refer
to
para
3-13a
Table
3-4.
Troubleshooting
with
Bit
Malfunction
Words
Digit
Value
Malfunction
Probable
cause/troubleshooting
Reference
NOTE
When
PADS
is
operating,
but
with
a
fault
indicator
showing
white
or
malfunction
status
indicator
lighted,
obtain
further
diagnostic
information
as
follows:
a.
Press
MON,
ID,
1,
ENT.
Display
should
show
1
MAL
XXXXXX.
Record
complete
displa~nonzero.
b.
Repeat
step
a
for
MON
ID
numbers
2
and
5.
Pressing
+2
or
-8
will
sequence
the
monitor
ID
number
up
or
down.
Attempt
to
clear
the
malfunction
as
follows:
a.
b.
c.
d.
If
MAL
1
or
2
are
not
zero,
select
that
display
function
and
hold
CLR
until
dis-
play
zeros.
Press
LAMP,
then
re~ease.
The
malfunction
indicator
(COMP,
IMU)
should
go
out,
but
may
light
again.
(Note
and
record
if
COMP
or
IMU
indicator
clears
briefly
when
LAMP
is
released.)
If
the
malfunction
remains
cleared,
continue
with
the
test.
3-16