Sony KLV-22CX350 / KLV-32CX350 Service Manual ▷ View online
KLV- 22, 26, 32 CX350, 40 CX450
RM-GA022
Troubleshooting
3-4. Audio Problem
3-4-2. HP Out No Sound
HP Out No Sound
3-4-3. Analog Audio Input No Sound
Analog audio
i
t
d
HP cable,
ok?
Change HP
cable
NG
input no sound
Audio RCA cable,
ok?
Change
RCA cable
NG
R3073 ~ 3.3Vdc, ok?
(when insert HP) –(B * Board)
Detection
NG
OK
NG
ok?
Audio analog source,
k?
RCA cable
Change audio
source
OK
NG
RB5004 x_audio_mute2,
~ 3.3Vdc (B* board)
Main IC NG
NG
OK
ok?
source
OK
3.3Vdc (B board)
Change B* Board
OK
Change B* Board
Change B* Board
(*)
Size
B* Board Type
G* Board Type
22”
BAQ GD1
21
26 / 32 “
BAQ
G9
40’’
BAQ G10
KLV- 22, 26, 32 CX350, 40 CX450
RM-GA022
Troubleshooting
3-4. Audio Problem
3-4-4. HDMI Audio No Sound
3-4-5. USB No Sound
HDMI Audio input
USB Audio input
p
no sound
HDMI cable,
ok?
Change
HDMI cable
NG
p
no sound
OK
ok?
HDMI source,
ok?
HDMI cable
Change HDMI
source
OK
NG
USB thumbdrive,
ok?
Change USB
thumbdrive
NG
OK
ok?
source
*HDMI sound
format ok?
Change to
supported format
OK
NG
*USB audio
format, ok?
Change to
supported format
NG
OK
Change BAQ Board
OK
format ok?
supported format
Change BAQ Board
Change BAQ Board
* Please refer to IM for supported HDMI
audio format.
* Please refer to IM for supported USB
audio format.
22
KLV- 22, 26, 32 CX350, 40 CX450
RM-GA022
Troubleshooting
3-4. Audio Problem
3-4-6. Analog RF No Sound
Analog RF input
g
p
no sound
RF cable,
ok?
Change RF
cable
NG
NG
ok?
RF source,
k?
cable
UI setting, ok?
(TV System, AFT, Audio Filter)
Correct UI
OK
NG
NG
OK
Change RF
source/channel
ok?
Raster sound,
Refer “Speaker
OK
NG
source/channel
ok?
No Sound”
Tuning,
Refer “Tuner
Change B* Board
NG
OK
OK
g,
ok?
Refer Tuner
Problem”
(*)
Size
B* Board Type
G* Board Type
22”
BAQ GD1
23
26 / 32 “
BAQ
G9
40’’
BAQ G10
KLV- 22, 26, 32 CX350, 40 CX450
RM-GA022
Troubleshooting
3-4. Audio Problem
3-4-7. 3-Times Blinking for Audio
Error
TV 3x blinking
B
Remove spk
connector (CN4000), ok?
Spk Impedance
OK
L4000, L4001, L4002 &
L4003 impedance to ground.
(B* Board)
OK
Spk Impedance
7~8ohm, ok?
(B* Board)-
F4000
Ok?
High Z
(>100Kohm)
NG
(B Board)
Low Z
(<100Kohm)
NG
NG
Amp IC NG
Change spk
wire
Change
main spk
OK
Output short to
GND / Amp IC NG
CN6001 pin17,19, 12.5V ok?
(B* Board)
NG
Check impedance
High Z
(>0ohm)
(B Board)
Power Board NG
(G*).
NG
OK
(*)
Size
B* Board Type
G* Board Type
22”
BAQ
GD1
p
CN6001 pin19 <-> C4023 (+ve)
(B* Board)
Low Z
( 0 h )
Change B* Board
22
BAQ
GD1
26 / 32 “
BAQ
G9
40’’
BAQ G10
24
(~0ohm)
B
Change B Board
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