Sony KD-55X9000A (serv.man2) Service Manual ▷ View online
No Picture
All blue picture is on?
(Factory SW is booted.)
B* Board
No
Yes
Replace
the B-Tcon, B-LD*
FFC
B-Tcon, B-LD*
FFC
NG
B* Board
Check the G*- LD*
Harness
Harness
NG
Change B* Board
OK
NG
G* Board
LCD Panel
(T-con, LD*)
Change G* Board
NG
Symptom
improvement
improvement
Symptom
improvement
improvement
Symptom
improvement
improvement
Backlight Issue
KD-55/65 X9000A, X9004A(PA)
121
TROUBLE SHOOTING
3-4. NO PICTURE
HUS button
malfunction
malfunction
Check Harness on HUS and
B* Board properly connected
B* Board properly connected
Check Harness pin Assignment
According to circuit.
According to circuit.
OK
OK
Change B* Board
NG
NG
Probe at Key_AD line and
check the signal
check the signal
Loose harness
connect properly
Change Harness
Change
HUS
HUS
NG?
OK
3-5. BUTTONS MALFUNCTION
1) Side button malfunction
KD-55/65 X9000A, X9004A(PA)
122
TROUBLE SHOOTING
IR do not response to
Remote Commander
Remote Commander
Check remote
control
control
Change remote
control
Center white LED
light at power
indicator
light at power
indicator
ok
NG
ok
NG
Check whether center
white LED blink ,when using
commander near the sensor
windows
white LED blink ,when using
commander near the sensor
windows
ok
Change SmartCore (mechanical)
NG
Check harness
connection is OK
on HIF and HSF
connection is OK
on HIF and HSF
Loose harness
connect properly
NG
Problem with Smart Core
HSF or HIF
or HSF-HIF harness
Change B*Board
Check harness
connection is OK
on HSF and B*Board
connection is OK
on HSF and B*Board
ok
NG
ok
Change
HSF-B* board Harness
HSF-B* board Harness
OK
NG
HSF-B* board harness
problem
OK
NG
Change SmartCore
2) IR remote commander malfunction
KD-55/65 X9000A, X9004A(PA)
123
TROUBLE SHOOTING
Backlight doesn’t change
when ambient lighting
level changed
when ambient lighting
level changed
Check UI setting for light
sensor .
Make sure it is “on”
sensor .
Make sure it is “on”
ok
Check current Software
Change B* Board
Update Software
NG
Change the UI
setting to “:ON”
setting to “:ON”
Check whether harness is
Connected on HIF and
HSF Board
Connected on HIF and
HSF Board
Connect the Harness
properly
Check whether harness
is
Connected on HSF and
B Board
is
Connected on HSF and
B Board
NG
NG
ok
ok
ok
NG
NG
Change Smart
Core
Core
Problem with Smart Core
HSF or HIF
or HSF-HIF harness
OK
Change
HSF-B* board Harness
HSF-B* board Harness
HSF-B* board harness
problem
OK
3) Light Sensor Error
KD-55/65 X9000A, X9004A(PA)
124
TROUBLE SHOOTING
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