Sony KDL-40NX700 / KDL-40NX703 / KDL-40NX705 / KDL-46NX700 / KDL-46NX703 / KDL-46NX705 Service Manual ▷ View online
KDL-40/46NX700 Series(AEP/UK)
29
TROUBLE SHOOTING
6) 7 times blinkings (Temperature Error)
7 times Blinkings
Setting circumstance
is OK?
Temperature,
Ventilation, etc.
BEHS Board
Set to another
Location, etc.
Change BEHS Board,
and Aging a few hours
Panel
5) 6 times blinkings (Backlight Error)
6 times Blinkings
Check
PANEL_FAIL at
JL2565
on the BEHS Board
G* Board
BEHS Board
Under 2.65V
Change G* Board
Panel (T-con)
NG
OK
NO
YES
NG
OK
Over 2.65V
KDL-40/46NX700 Series(AEP/UK)
30
TROUBLE SHOOTING
3-5. NO PICTURE
No Picture
Press HOME Key
XMB (Menu) displayed?
BEHS Board
Replace
the LVDS Harness
LCD Panel
(T-con)
Harness
(LVDS)
Check
BL_ON at JL2566
on the BEHS Board
BL_ON:H
BEHS Board
Check Harness
(Between G* Board
to BEHS Board)
Harness
(G* to BEHS)
BL_ON: not H
Change BEHS Board
G* Board
NO
YES
NG
OK
NG
OK
NG
OK
PANEL_VCC
At JL3806 on the
BEHS Board
G* Board
YES
NO
about 5V
： 22” Model
about 12V : ex. 22” Model
KDL-40/46NX700 Series(AEP/UK)
31
TROUBLE SHOOTING
3-6. NO SOUND
No Sound
Check the Speaker
Harness
Speaker Harness
Replace
the BEHS Board
BEHS Board
Speaker
NG
OK
NG
OK
Check the
“Speakers setting”
Change to
“TV Speaker”
“Audio System”
“TV Speakers”
KDL-40/46NX700 Series(AEP/UK)
32
3-7. TV COMMANDER BUTTONS MALFUNCTION
TROUBLE SHOOTING
1) TV button malfunction
Button malfunction
on the TV
BEHS to Switch Unit
harness check
Switch Unit
Harness
Switch Unit change
BEHS Board
OK
NG
OK
NG
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