Troubleshooting 200 - Kenwood TS-120S Service Manual

TROUBLE SHOOTING
RECEIVER SYSTEM
OK
* Defective Q7: HA1366W (AF power amp)
* Loose phones jack contact
2 Q)
* Defective AF GAIN VR
* Defective AF GAIN VR wiring
* Loose contact
* Refer to PLL troubleshooting
circuit
OK
NG
ae
*T1~77 in IF unit requires adjustment
* Defective CFi, 2
NG * Defective XF (SSB or CW}
*Check
customer
installed
CW
filter.
Defective
filger
Defective NG
Tr
* Defective Q1~Q3 in the RF unit
* Mulfunction of band switch
+ RF BPF coil requires adjustment
or is defective
+ Loose contact of RL1-1 in the
filter unit
Marker
inoperative
> Defective Q4, O5 (Mult. vibrator)
+ Defective Q6 (Buffer amp)
* COUNTER circuit.
33