TM 11-7440-232-12/ NAVELEX 0967-LP-275-5010
TROUBLESHOOTING CHART NO. 2 (cont'd)
STEP
INSTRUCTION
INDICATION
YES
NO
REMARKS
For Models MD-701A/UY
and MD-701B/UY.
(1) Turn POWER switch
off.
(2) Replace data carrier
alarm.
(3) Turn Power switch
on.
Alarm
X
Go to step 4.
Alarm
X
Resume
3
operation.
For Model MD-701/UY
(1) Turn POWER switch
off.
(2) Replace decoder
error detector.
(3) Turn power switch
on.
Alarm
X
Go to step 4.
Alarm
X
Resume
operations.
Set multimeter to dc
scale. Check power sup-
ply outputs in
sequence.
+12V (TP1)
within +0.5V
Read or adjust
4
-12V (TP2)
within +0.5V
to read voltage
+ 4V (TP3)
within +0.2V
with specified
to
ranges.
GROUND (TP4)
5-25
