Read Sony KLV-32D300A / KLV-40D300A / KLV-46D300A (serv.man2) Service Manual online
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KLV-32/40/46D300A
RM-GA008
Audio Trouble Shooting Chart
IC2009 (TPA3100D2)
Breakdown
Breakdown of Mute or
SD control circuit for
IC2009 (TPA3100D2).
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
Checked the power supply of audio.
AU_13V, Reg_12V.
Checked the FAULT signal of IC2009 (TPA3100D2).
In LOW, it is abnormal.
Checked the FAULT signal of IC2009 (TPA3100D2).
In LOW, IC breakdown, output short, and etc.
IC2010 (NJM3414AV) Breakdown.
MUTE circuit Breakdown
Headphone connector defect.
NO
IC2004 (NJM4558V) Breakdown.
MUTE circuit Breakdown.
Is the speaker signal
output from
IC2002 (CXD9890AQ)?
IC2003 (NJM4558V) Breakdown.
MUTE circuite Breakdown.
1
1
NO
NO
NO
NO
Checked of each input
terminal.
NO
NO
IC2006 (NJM4558V)
Breakdown!
or
Breakdown of circuit
in surrounding.
NO
Operation check of
HP_DET.
Is the head phone
signal output from
signal output from
IC2002 (CXD9890AQ)?
Is the LINE signal
output from
IC2002 (CXD9890AQ)?
Is the REC signal
output from
IC2002 (CXD9890AQ)?
Failer of 8
count
blinking?
Is the sound
output from the
headphone?
Is the sound
output from
LINE_OUT?
No sound
from
speaker.
No sound
from
REC_OUT.
No sound
from
LINE_OUT.
No sound
from Head
Phone.
Is the sound
output from
REC_OUT?
Is the MUTE pin of
IC2009 (TPA3100D2)
HIGH?
Is the SD pin of
IC2009 (TPA3100D2)
LOW?
Is the
Headphone
_DET
IC2002 (CXD9890AQ)
Breakdown!
or
Breakdown of circuit in
surrounding.
It is confirmed whether there
is signal that responds to the
input of
IC2002 (CXD9890AQ)
respectively.
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