Troubleshooting - Kenwood TS-120S Operating Manual

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TROUBLESHOOTING
by defective components,
cr
Trout
Cause
Remedy
Unit completely dead with Power
swatch ON
in Power cord disconnected or AC power OFF
| 2 cote power connector
3. Biowntine
Connect power cord
ura AC power ON
2. Reconnect
3. Replace fuse lit fuse blows again. contact
sence stavon!
[No signals received with antenna
Standby ar microphone PTT swith sn tansmt
'swwtch in receive positon
No signe received, and S-meters
deflected up scale with antenna con
A gain reduced.
Turn RF GAIN contro fully clockwise
'Semeter detects without signals
1 Power supply voltage 18100 10w,
2 AF cwcuit gains 129 low.
No $88 reception
'Wiong sideband
Frequency remains the same wh
RIT contol sadjustes
Set MODE swwten to
IT swatch OFF
Depress RIT sentch ON
Mite reer numbers net maicates on
Digital Display
| Toss roxma, the digea ioiay wil not ine:
Mite order tequencies me following bands:
Digital Display snot aetectve
| See sect 4:1 recener tuning
2. MIC contol in minimum position
2SMHzband 40 and ngher
TOMHrband 7 0andiower
140MM? band — 140 andiower
21OMHzband
21 O and lower
|
2BOMMedId — 28 Oandiower
2OMH2bInd
—300anchigher
|
No output
Standby swnteh not in wanamit postion CAR
| tum CAR or MIC clockwise
MIC conta a mnienum position
No $$8 output
1. MIC pvp loose
1 Reconnect
2 Turn MIC contol eockwnse.
VOX circu inoperative
1. VOX control minimum positon
2. VOX switch in MAN poston
1 Turn VOX contol clockwise
2. Set VOX switeh to VOX.
VOX operates by sound from speaker
ANTI VOX setting incorrect,
Tem ANTI VOX contol clockwise
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