Realistic trc-448 - Page 27

Symptom
Possible Cause
16)
Modulation indicator does not flash on AM.
MOD : OK
A)
Defective Q218, D226, D227 and/or associated circuit
components
B)
Defective modulation indicator lamp
17)
Meter lamp does not turn on in RX.
A) Defective D229
18)
Meter lamp does not turn on in MON/PA
A) Defective D230
19)
RX AGC and SSB TX ALC does not work
A) Defective Q214 and/or associated circuit components
20)
Noise blanker and ANL does not work.
A)
Defective IC-201, Q226, Q228,D236. D237, D238,
D239 and/or associated circuit components
B)
Defective D216 and/or associated circuit components
C)
Defective NB switch
21)
PA does not work.
CB : OK
A)
Defective PA—CB switch
B)
Defective PA jack
22)
RF control does not work.
A) Defective Q220, D253 and/or associated circuit
components
23)
CLARIFIER does not work.
A)
Defective D12,D13, D14 and/or associated circuit
components
B)
Defective VR-304 and/or VR-2
I