TM 11-6625-2575-14
Corrective
action
Probable
cause
Symptom
a. Replace F1.
1. Power switch ON, but indicator light is a. F1.
b. Replace I1.
b. I1.
off.
a. Isolate defect and repair as neces-
2. F1 blows when power switch is at ON.
sary.
b. See chapter 8.
(Repair or
replace
b. Shorted power supply outputs
defective rf assembly as required).
a. Isolate defect and repair as neces-
3. No RF OUT in either HIGH band or a. Power supply voltages,
sary.
LOW band.
b. Leveler voltage.
b. See chapter 8.
(Replace or
repair
defective rf assembly.)
d. Rf cables.
e. Rf detector.
f. Monitor/mixer.
4. RF OUT in HIGH band only.
a. Fixed oscillator/mixer.
defective rf assembly.)
b. Bandswitch S601.
c. Video amplifier.
d. Rf cables.
a. Isolate defect and repair as neces-
5. Insufficient RF OUT in HIGH band.
a. Potentiometer R210 (MAX
sary.
LEVEL SET).
b. +30-volt and -30-volt sup-
ply.
Q202) .
b. See chapter 8.
(Replace defective rf
assembly.)
e. Band switch.
6. Excessive variations in RF OUT in both
a. Isolate defect and repair as neces-
bands.
sary.
Q202).
b. See chapter 8.
(Repair or
replace
defective rf assembly.)
b. Monitor/mixer.
7. Insufficient RF OUT in LOW band, and
a. Video amplifier.
RF OUT variations excessive.
defective rf assembly.)
b. Fixed oscillator/mixer.
8. No SCOPE HORIZ output.
Isolate defect and repair as necessary.
Q101, Q102, Q103, Q104, Q105.