Sansui 771 - Page 13

Symptom Check Point
* from page 11
E24) Signal meter inoperative 1%,
IZ,
13.
1
Cause & What to Do
Defective CFO1~ CFO3 on F-1479
Defective FETO1, TRO1, TRO2 on F-1479
Defective TRO5~TR10 on F-1479
. Defective LO1~LO3 on F-1479
15. Defective TO1~TO5 on F-1479
IF, RF out of adjustment on F-479
Defective TR11, TR12 on F-1479
Defective T06, TO7 on F-1479
Defective D03, DO4 on F-1479
Defective VRO2 on F-1479
21. Defective signal meter
. Muting circuit inoperative
(Signal meter operative) 7)
2
2
No channel! separation on FM stereo broadcasting
*Confirm that SELECTOR switch is set to FM AUTO
*Confirm signal meter operates
1) Indicator lamp not lighted
2) Indicator lamp lighted
3. AM Section
3-1. AM inoperative
1) Interstation noise changes by touching the terminal
[04] [04] on F-1479
- -1) 4
1-
-2) No change ———-—____
3-3. Signal meter inoperative 44,
(AM broadcasting sound can be heard) 45
| 46
47
48
1
2
3
4
5
. Signal meter inoperative 16.
(FM broadcasting sound can be heard) 47.
18.
19.
20,
1
2
3
4
5
6
22. Defective TR13~TR15 on F-1479
. Defective TR19, TR20 on F-1479
. Defective DO5 on F-1479
. Defective VRO3 on F-1479
26. Imperfect contact of MUTING switch S8
Defective the indicator lamp PL726
. Defective TR16 on F-1479
. Defective LO8 on F-1479
. Defective 1CO3 on F-1479
. Defective VRO1 for indicator lamp on
F-1479
. Defective VRO5 for FM stereo separation
on F-1479
. Defective F-1500
Defective TR16 on F-1479
Defective bar antenna
. Defective TR24 on F-1479
7. Defective T11 on F-1479
8. Variable capacitor shorted
. Defective DO7 on F-1479
. Defective TR21~TR23 on F-1479
. Defective TO8~T10 on F-1479
3-2. om
43
. IF out of adjustment on F-1479
Defective D06, DO7 on F-1479
IF, RF out of adjustment on F-1479
. Defective TR25 on F-1479
. Defective D08, DOI on F-1479
. Imperfect contact of VRO6 on F-1479
. Defective signal meter