Sony KDL-40ZX1 Service Manual ▷ View online
- 16 -
2-2-5. GS1 & LD1 Board Removal
4
Eight screws
(+PSW M3X5)
2-580-590-01
2-580-590-01
1
Seven screws
(+PSW M3X5)
2-580-590-01
2-580-590-01
2
LD1 board
5
GS1 board
6
Insulate sheet (GS)
4
Insulate sheet (LD)
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2-3-1. Flowchart
YES
YES
NO
YES
START
Does the power LED
stay on when the TV is
switched on?
Is the video and
audio ok?
END
Do the buttons
on the TV & remote
commander work
properly?
Is the standby
LED flashing?
LED flashing?
See 2-3-3.
Standby Led Flashing
Standby Led Flashing
See 2-3-2.
No Power
No Power
See
2-3-4. No Video
2-3-5. No Audio
2-3-4. No Video
2-3-5. No Audio
See 2-3-6.
TV/Commander
Button Malfunction
TV/Commander
Button Malfunction
NO
YES
NO
NO
2-3. TROUBLESHOOTING
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2-3-2. No Power
OK
NG
GS1 Board
NO POWER
Check STBY 3.3V
at C6250 plus (+) terminal
on the GS1 Board
or
Check AC_OFF_DET voltage
at pin 2 of CN6157
on the GS1 Board
B Board
2-3-3. Standby LED Flashing
OK
NG
GS1 Board
2 Flashes
B Board
Check REG12V at
pins 5/6 of CN6156
(GS1 Board)
OK
NG
GS1 Board
3 Flashes
B Board
Check REG12V at
pins 5/6 of CN6156
(GS1 Board)
x2 Flashes
x3 Flashes
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x6 Flashes
x7 Flashes
x8 Flashes
OK
NG
Flashing
6 Flashes
B Board
Check INV_ERR
voltage at pin 7
of the CN6157
(GS1 Board)
LCD Panel
Replace the
LD1 Board
No
Flashing
Flashing
LD1 Board
Flashing
No
Flashing
Flashing
7 Flashes
LCD Panel
Replace the B Board
Age the unit
several times
B Board
OK
NG
GS1 Board
8 Flashes
B Board
Check Audio Vcc
at pins 3/4 of
CN2502 on the
B Board
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