Sony KDL-40NX800 / KDL-52NX800 / KDL-60NX800 (serv.man2) Service Manual ▷ View online
KDL-40/52/60NX800(WB)
25
1) 2 times blinkings (Main Power Error)
3-4. STANDBY LED BLINK
TROUBLE SHOOTING
2 times Blinkings
Check REG12V at
pins 6/7 of
CN3800 on
the BUHS Board
BUHS Board
Harness
G* Board
Replace
Between G* Board to
BUHS Board Harness
12V NG
12V OK
NG
OK
KDL-40/52/60NX800(WB)
26
TROUBLE SHOOTING
2) 3 times blinkings (DC Alert, Audio Error and Communication Error)
3 times Blinkings
Check D+3.3V at
JL3715 or JL3716
on the BUHS Board
IC4200,etc
(BUHS Board)
F3700,IC3700,etc
(BUHS Board)
Speaker
Check +5V_MAIN
at JL3731 or JL3732 on
the BUHS Board
Check
Speaker Impedance
at SP Connector
F3701,IC3701,etc
(BUHS Board)
Check
X_ASW_PROTECT
at pin 29 of IC5000
on the BUHS Board
on the BUHS Board
Check +12.5V
at pin 2 of
CN3800 on
the BUHS Board
G* Board
Check +12.5V_AU1
at F4200 on
the BUHS Board
F4200,IC4200,etc
(BUHS Board)
IC9000,etc
(BUHS Board)
DC_ALERT
NG
OK
AUDIO
AUDIO
FE/BE Communication
NG
OK
NG
OK
NG
OK
NG
OK
Pin: Low
Pin: High
KDL-40/52/60NX800(WB)
27
TROUBLE SHOOTING
3) 4 times blinkings (Balancer Error)
4 times Blinkings
Check
PANEL_FAIL at
JL2565
on the BUHS Board
BUHS Board
PANEL
(Balancer)
Between 0.84V to 2.65V
KDL-40/52/60NX800(WB)
28
TROUBLE SHOOTING
4) 5 times blinkings (T-con Error)
5 times Blinkings
Check PANEL_VCC
at JL3806
on the BUHS Board
G* Board
Between G* to Panel
harness check
LVDS Harness
check
Panel (T-con)
change
BUHS Board
Harness
LVDS Harness
Panel (T-con)
about 5V ： 22” Model
about 12V : ex. 22” Model
about 12V : ex. 22” Model
NG
OK
NG
OK
NG
NG
OK
OK
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