Read Sony ST-SA50ES Service Manual online
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SECTION 3
TEST MODE
1. Circuit Check Mode
1. Turn OFF the power.
2. While pressing 4 and MENU together, turn ON POWER .
2. While pressing 4 and MENU together, turn ON POWER .
•
The items in the following table will be checked automatically in order every 2 seconds.
Display
Tuned
IF Frq
Sig Level
Stereo
Items
AST signal = LOW
IF COUNT OK
SI LEVEL > 70dB
ST signal = LOW
FM RDS
OK or NG
OK or NG
OK or NG
AM
OK or NG
OK or NG
NG
IC251 NG, RV251 adjustments
FE101, IC251 NG, or IF count buffer amp (Q251, Q401) NG
IC221 NG, RV221 adjustments
IC301 NG, RV301 adjustments
DISPLAY
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