8-7
A91N3TR
[ Audio Signal Section ]
Check SP861,SP862 and their periphery circuit,
and service it if defective.
Are the audio(L/R) signals inputted to Pin(1, 9)
of IC801?
Yes
Yes
Yes
Audio is not outputted normally.(Audio input)
FLOW CHART NO.1
Are the audio(L/R) signals inputted to Pin(2, 15)
of IC771?
Check the line between Pin(2, 15) of IC771 and input
terminal(JK753, JK754), and service it if defective.
No
No
Are the audio(L/R) signals outputted to Pin(4, 6)
of IC801?
Check IC801 and their periphery circuit, and
service it if defective.
No
Yes
Are the audio(L/R) signals inputted to Pin(6, 8) of
CN301?
Replace Digital Main CBA Unit.
Check the line between Pin(1, 7) of IC803 and
Pin(1, 9) of IC801, and service it if defective.
Are the audio(L/R) signals inputted to Pin(3, 5)
of IC803?
No
Yes
Check the line between Pin(6, 8) of CN301 and
Pin(3, 5) of IC803, and service it if defective.
Are the audio(L/R) signals outputted to Pin(1, 7)
of IC803?
No
Yes
Replace IC803
No
Check SP861,SP862 and their periphery circuit,
and service it if defective.
Are the audio(L/R) signals inputted to Pin(1, 9)
of IC801?
Yes
Yes
Yes
Audio is not outputted normally.(Component Audio input)
FLOW CHART NO.2
Are the audio(L/R) signals inputted to Pin(4, 11)
of IC771?
Check the line between Pin(4, 11) of IC771 and input
terminal(JK741, JK742), and service it if defective.
No
No
Are the audio(L/R) signals outputted to Pin(4, 6)
of IC801?
Check IC801 and their periphery circuit, and
service it if defective.
No
Yes
Are the audio(L/R) signals inputted to Pin(6, 8) of
CN301?
Replace Digital Main CBA Unit.
Check the line between Pin(1, 7) of IC803 and
Pin(1, 9) of IC801, and service it if defective.
Are the audio(L/R) signals inputted to Pin(3, 5)
of IC803?
No
Yes
Check the line between Pin(6, 8) of CN301 and
Pin(3, 5) of IC803, and service it if defective.
Are the audio(L/R) signals outputted to Pin(1, 7)
of IC803?
No
Yes
Replace IC803
No
Содержание 19MF339B/F7
Страница 14: ...4 2 A91N3DC 2 Rear Cabinet S 1 1 Stand Assembly S 2 S 2 S 4 S 2 S 2 S 3 S 3 S 2 Fig D1...
Страница 18: ...4 6 A9170DC 2 Rear Cabinet S 1 1 Stand Assembly S 2 S 2 S 4 S 2 S 3 S 2 Fig D1...
Страница 46: ...10 3 A91N3SCM1 Main 1 4 Schematic Diagram LC195SLX LC195EMX LC195SSX 19MF339B F7...
Страница 47: ...10 4 A91N3SCM2 Main 2 4 Schematic Diagram LC195SLX LC195EMX LC195SSX 19MF339B F7...
Страница 48: ...10 5 A91N3SCM3 Main 3 4 Junction B Schematic Diagram LC195SLX LC195EMX LC195SSX 19MF339B F7...
Страница 50: ...10 7 A9170SCM1 Main 1 4 Schematic Diagram 22MF339B F7 LC225SSX...
Страница 51: ...10 8 A9170SCM2 Main 2 4 Schematic Diagram 22MF339B F7 LC225SSX...
Страница 52: ...10 9 A9170SCM3 Main 3 4 Junction B Schematic Diagram 22MF339B F7 LC225SSX...
Страница 54: ...10 11 A91N3SCJ Jack Junction C Schematic Diagram...
Страница 55: ...10 12 A91N3SCF Function Junction A Schematic Diagram...
Страница 70: ...10 27 BA94N0F01021 A Jack CBA Top View...
Страница 71: ...10 28 BA94N0F01021 A Jack CBA Bottom View...
