Read Sony KDL-55W900A Service Manual online
KDL-55W900A 7
SECTION 2 - TROUBLESHOOTING
POWER AND CONTROL BLOCK DIAGRAM
REG12V
GND
GL_CTRL
LD_ERR
1
3
4
3
4
5~9
DC_DIMMER
PWM DMMER
BL_ERR
1
3
2
BL_ON
GND
5
7~12
REG12V
STBY3.3V
13~18
21~24
21~24
CN6611
CN6401
CN6001
BA2S
G1B
11~14
AC_OFF_DET
POWER_ON
27
28
28
23
GND
1
3
5
5
7~12
13~18
21~24
21~24
27
28
28
23
DC_DIMMER
BL_ERR
BL_ON
GND
REG12V
STBY3.3V
AC_OFF_DET
POWER_ON
GND
PWM DIMMER
2
LD
TO LED
BACKLIGHTS
VLED_VCC
POWER SUPPLY
MAIN BOARD
LOCAL DIMMING
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