Sony KDL-32CX520 / KDL-32CX521 / KDL-32CX523 / KDL-32CX525 / KDL-40CX520 / KDL-40CX521 / KDL-40CX523 / KDL-40CX525 / KDL-46CX520 / KDL-46CX525 Service Manual ▷ View online
KDL-32/40/46CX520,521,523,525(AEP/UK/RUSS)
41
TROUBLE SHOOTING
3-6. NO PICTURE
No Picture
Press HOME Key
XMB (Menu) displayed?
B* Board
Replace
the LVDS Harness
LCD Panel
(T-con)
Harness
(LVDS)
(LVDS)
Check BL_ON
at pin 6 of CN6002
on the B* Board
BL_ON:H
B* Board
Replace Harness
(Between G* Board
to B* Board)
Harness
(G* to B*)
BL_ON: L
Change B* Board
G* Board
NO
YES
NG
OK
NG
OK
NG
OK
Check PANEL_VCC
at pin 1 of CN6001
on the B* Board
G* Board
YES
NO
about 5V : 22”/26” Model
about 12V : ex. 22”/26” Model
about 12V : ex. 22”/26” Model
KDL-32/40/46CX520,521,523,525(AEP/UK/RUSS)
42
TROUBLE SHOOTING
3-7. NO SOUND
No Sound
Check the Speaker
Harness
Speaker Harness
Replace
the B* Board
B* Board
Speaker
OK
NG
NG
OK
Check the
“Speakers setting”
Change to
“TV Speaker”
“Audio System”
“TV Speakers”
KDL-32/40/46CX520,521,523,525(AEP/UK/RUSS)
43
3-8. TV COMMANDER BUTTONS MALFUNCTION
TROUBLE SHOOTING
1) TV button malfunction
Button malfunction
on the TV
Replace the Harness
between B* to
Switch Unit
Switch Unit
Harness
Switch Unit change
B* Board
OK
NG
OK
NG
KDL-32/40/46CX520,521,523,525(AEP/UK/RUSS)
44
TROUBLE SHOOTING
2) IR remote commander malfunction
TV isn’t controlled
by remote commander
Green LED light
at power indicator
OK
NG
Sensor is broken
HLR Board
B* Board
OK
NG
Mechanical
(ex. bezel)
Green LED blinks
at power indicator
at power indicator
when using commander
near sensor’s window
Check the Harness
between the B* Board
and the HLR Board
Exchange the Harness
Exchange the
HLR Board
Harness
OK
NG
OK
OK
NG
NG
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