Sony KD-43X8300C Service Manual ▷ View online
TROUBLE SHOOTING
3) Power Off Checking*3
No Sound
Without LED 3x
No sound only
Analog RF and Digital RF ?
Yes
Go to
No Sound Tuner
AV receiver is connected
Yes
Select [External Inputs]
→
[BRAVIA S
S tti
]
No
No
No sound only HDMI ?
Yes
Go to
No Sound HDMI
AV receiver is connected
to HDMI in ?
[BRAVIA Sync Settings]
→
[BRAVIA Sync Control]
→[off]
No
No
Headphone is connected to
Yes
Go to
No Sound Audio
[Speakers] setting is
[Audio System] ?
Change the setting to
[TV Speakers]
Yes
Headphone is connected to
HP/Audio Out terminal ?
Disconnect the Headphone
Yes
No
[Sound]
→
[H
d h
S
k
Li k]
Change [Sound]
→
[H
d h
S
k
Li k]
Yes
Go to
[Headphone Speaker Link]
setting is [On] ?
[Headphone Speaker Link]
to [Off], OK ?
Replace B-PWB
Yes
No
Yes
No
Go to
Power Off Checking*1
HP/Audio out terminal or Headphone detect
GPIO may be broken
GPIO may be broken
93
TROUBLE SHOOTING
3-3-5. 3 Times Blinking (HDMI EQ Error)
BMFL/BMFW board
3-time blinking
Check
I2C_C bus signal.
at CL5259 and
CL5261
NG
IC5212
Or IC1000
IC5212
Check
VS GND impedance
of +1.0V_HDMI
at HDMI EQ side
(ex.C5335)
NG
Check
Voltage
CL5261.
OK
Check
VS GND impedance
of EQ +3 3V MAIN
NG
OK
IC5212
Voltage
of +1.0V_HDMI,
EQ_+3.3V_MAIN,
+5V_BOSTON
at HDMI EQ side
(ex.C5335, C5317,
NG
Power,
DDCON
of EQ_+3.3V_MAIN
at HDMI EQ side
(ex.C5317)
OK
IC5212
(
,
,
and C5351, )
OK
Check
X’tal or
around parts.
Check
VS GND impedance
of +5V_BOSTON
at HDMI EQ side
(ex C5351)
NG
IC5212
Check
Frequency of X’tal
(X5202)
27MHz?
NG
p
X5202,
R5478(100ohm),
R5368(1Mohm)
C5298(10pF)
C5297(12pF)
C5297(12pF)
OK
(ex.C5351)
OK
IC1000
94
TROUBLE SHOOTING
3-3-6. 5 Times Blinking (Panel Communication Error)
5-times blinking
Change
B-Board
Change
Panel (T-con)
NG
Check
“+12.5V_TCON” at
CN9000
on the B-Board
B Board
Panel (T con)
NG
Symptom
improvement
improvement
G-Board is
suspicious
Replace G-Board
NG
Symptom
improvement
improvement
OK
Replace the Harness
Between G-Board
d B B
d
Harness is
suspicious
B-Board is
suspicious
OK
Symptom
improve
improve
NG
Panel (T-Con) is
suspicious
and B-Board
suspicious
Symptom
NG
Replace
the V-By-One FFC
V-By-One FFC
is suspicious
y p
improve
NG
NG
95
TROUBLE SHOOTING
3-3-7. 6 Times Blinking (Backlight Error)
Harness /
6-times blinking
Check a voltage of
Harness /
Connection
broken
BL_ERR_DET.
Check point is
JL9007
or
23pin of CN9000
on B*Board
Voltage
≥ 1.9 V
Symptom
Improvement
Harness
Change
harness
No improvement
Check
harness/connection
G*board to B*Board
or
LD board to B*Board
on B Board
Harness /
Connection OK
Voltage < 1.8 V
LED driver or G* board
Change LD board or G* board.
LD board/G board
Symptom
Improvement
Panel
Change
Panel
Symptom
Improvement
No Improvement
No improvement
Change
B* board
B* Board
p
Symptom
Improvement
96
Click on the first or last page to see other KD-43X8300C service manuals if exist.