Sony KD-49X8005C Service Manual ▷ View online
KD-49/55X8005C,XBR-55/65X800C,805C,807C,809C,810C
125
TROUBLE SHOOTING
3-3-6. 5 Times Blinking (Panel Communication Error)
5-times blinking
Check
“+12.5V_TCON” at
CN9000
on the B-Board
Replace the Harness
Between G-Board
and B-Board
Replace
the V-By-One FFC
Change
B-Board
Change
Panel (T-con)
Harness is
suspicious
V-By-One FFC
is suspicious
B-Board is
suspicious
NG
OK
NG
Symptom
improvement
Symptom
improve
Symptom
improve
NG
NG
G-Board is
suspicious
Replace G-Board
NG
Panel (T-Con) is
suspicious
Symptom
improvement
OK
KD-49/55X8005C,XBR-55/65X800C,805C,807C,809C,810C
126
TROUBLE SHOOTING
3-3-7. 6 Times Blinking (Backlight Error)
Harness /
Connection
broken
6-times blinking
Check a voltage of
BL_ERR_DET.
Check point is
JL9007
or
23pin of CN9000
on B*Board
Voltage ≥ 1.9 V
Symptom
Improvement
Harness
Change
harness
Change
B* board
B* Board
Harness /
Connection OK
No improvement
Voltage < 1.8 V
Panel
Change
Panel
Symptom
Improvement
No Improvement
Symptom
Improvement
LED driver or G* board
Change LD board or G* board.
No improvement
LD board/G board
Symptom
Improvement
Check
harness/connection
G*board to B*Board
or
LD board to B*Board
KD-49/55X8005C,XBR-55/65X800C,805C,807C,809C,810C
127
TROUBLE SHOOTING
3-3-8. 7 Times Blinking (Temperature Error)
7-time blinking
B* Board NG
Yes
Panel
NG
Change B* Board,
and Aging a few
hours
Setting
circumstance is OK?
Temperature,
Ventilation, etc.
Set to another
location, etc.
No
Symptom
improvement
Check I2C_C bus
communication OK?
(check the next page)
Yes
No
Temp sensor
IC1400
I2C_C bus dumping or
Muffin check
KD-49/55X8005C,XBR-55/65X800C,805C,807C,809C,810C
128
TROUBLE SHOOTING
3-4-1. No Sound Audio
No Sound
Audio
Replace B-K Harness
OK ?
Yes
No
Replace K-PWB
OK ?
Replace B-PWB
OK ?
Yes
No
Yes
Finish
Segment “XS”?
Yes
No
3-4. NO SOUND
No Sound with normal picture
Please refer Audio
troubleshooting
YES
NO
Only RF tuner input?
Check IC1000 (SOC)
3-4-2. No Sound : TUNER
