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Symptom
Cause and Remedy
|
RefNo.
|
ae
F) 4-COMI.C & Resonator inferior.
1.C (301)
AM Failure,
1. u-COM IC B+(5)V check.
IC Pin No.( 44)
2. "-COM clock pulse check.
X-TAL( 301 )
A) AM V.T voltage inferior.
B) PLL IC check.
1.C (02)
1. PLL IC B+( 5 )V check.
1.C Pin No. (15)
2. PLL control data check. (Data/CE/Clock)
1.C Pin No. (2, 3, 4,5)
C) TUNER
B+ voltage inferior.
1.C Pin No. (8)
D) AM OSC COIL inferior.
T (RF BLOCK )
E) u-COM|.C & Resonator inferior.
1.C (301)
1. u-COM IC B+ (5 )V check.
1.C Pin No. ( 44)
2. u.-COM clock pulse check.
X-TAL ( 301 )
Stereo Effect Failure.
A) FM DET COIL Inferior.
T (DET1, DET2 )
B) MPX IC inferior.
Stereo does not light up.
10(01)
1. MPX IC B+ ( 14 )V check.
1.C Pin No. (8 )
2. MPX control data check.
I.C Pin No. (15)
VR (02 )
C) STEREO adjustment inferior.
D) FM MUTE adjustment inferior.
1.C (301)
IC Pin No.( 44 )
E)
u-COM1.C & Resonator inferior.
1. 4-COM IC B+( 5 )V check.
2. u-COM clock pulse check.
A) MUTE TR inferior.
X-TAL ( 301 )
Q(9, 10, 11)
CNT ( CP401 )
Tuner Sound Dead.
1."L /R" channel dead.
B) Connector's disconnection or disjunction .
2. "LEFT" channel dead.
1. Change or Close insertion of the connector.
3. "RIGHT" channel dead.
C) AM/FM IF IC check.
IC (01)
1.C Pin No. ( 1, 16, 17)
- 4. Signal IN/OUT terminal.
2. I.C driving voltage check. ( +12V )
IC (01 )
D) FM DET COIL inferior.
T ( DET1, DET2 )
E) AM IFT COIL inferior.
T (RF BLOCK )
F) MPX |.C_ check.
10 (01)
1. Signal IN/OUT terminal.
2. |.C driving voltage check. (+ V)
22
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