1-11-16
E9656TS
C
FLOW CHART NO.11
Hi-Fi E-E audio does not operate normally.
Check the circuit of AL+5V, P-ON+5V and
P-ON+9V, and service it if defective.
Is the 5V voltage supplied to Pin(25,40,51) of
IC451, or the 9V voltage supplied to Pin(58) of IC451?
Is the serial data and the clock signal supplied to
Pin(42,43) of IC451?
Ye s
Ye s
Ye s
No
No
Check the line between Pin(42,43) of IC451 and
Pin(17,18) of IC501, and service it if defective.
Is SIF signal inputted to Pin(21) of IC900?
Are the audio signal outputted
to Pin(29,30) of IC900?
Replace TU900.
Replace IC900.
Ye s
Check the line between
Pin(29,30) of IC900 and
Pin(2,15) of IC800, and
service it if defective.
Ye s
No
No
Check the line between
Pin(9,10) of IC800 and
Pin(60,61) of IC501, and
service it if defective.
Replace IC800.
Ye s N o
Are the audio signals inputted to each pin of
IC800?
Check the line between audio input terminal and
each pin of IC800, and service it if defective.
Are the audio signals outputted to Pin(3,13) of
IC800?
Ye s
Are the audio signals inputted to Pin(9,14) of
IC451?
Ye s
No (Rear or
Front input)
No (Tuner)
Check the line between Pin(3,13) of IC800 and
Pin(9,14) of IC451, and service it if defective.
No
No
IC800 AUDIO-IN1 (REAR)4,11PIN
IC800 AUDIO-IN2 (FRONT)5,14PIN
IC800 TU-AUDIO (TUNER)2,15PIN
AUDIO-IN1 (REAR)
AUDIO-IN2 (FRONT)
IC800 → JK8044,11PIN
Are active level of Pin(9,10) of IC800 become
as shown below?
IC800 → JK800, JK8015,14PIN
INPUT
TUNER
LINE(REAR)
LINE(FRONT)
9PIN 10PIN
LH
LL
HL
Continued to D on the next page.
Ye s
No
Is the "H" pulse inputted into Pin(9,10,11) of IC1406?
Ye s
Replace IC1406.
Replace IC501.
Is approximately 5V voltage supplied to Pin(16)
of IC1406, or approximately -8V voltage supplied
to Pin(7) of IC1406?
No
Check the AL+5V line and the AL-30V line
(R777,R778), and service it if defective.
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