Read Sony KDL-46W955A / KDL-55W955A Service Manual online
KDL-46W955A/55W955A 7
SECTION 2 - TROUBLESHOOTING
POWER AND CONTROL BLOCK DIAGRAM
POWER_ON
28
27
23
23
STBY 3.3V
13~17
5
BL_ERR
1
AC IN (N)
AC IN (L)
1
2
2
CN6401
BM
BL_ON
1
2
4
5, 6
CN9101
11, 13, 14
12
8, 10
16
18
18
CN6101
LD
MAIN BOARD
POWER SUPPLY
VLED_VCC
VLED_GND
CN6601
SIGNAL_GND
LD_ERR
1~4
6~9
6~9
3
4
4
10
11
11
AC OFF DET
REG 12V
3
2
2
PWM_DIMMER
DIMMER
DC_DIMMER
POWER_ON
BL_ERR
REG 12V
PWM_DIMMER
BL_ON
GND (AU)
STBY 3.3V
AC OFF DET
REG 12V (AU)
GND
REG 12V (PANEL)
7, 9
19
20
20
10~12
21,22
GND
GND
12
14
14
GL_CTRL
REG_12
CN2001
LCD PANEL, TCON
LED BACKLIGHTS
&
G3A (46”)
G3B (55”)
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