Read Sony KDL-70R520A Service Manual online
KDL-70R520A 7
SECTION 2 - TROUBLESHOOTING
POWER AND CONTROL BLOCK DIAGRAM
STBY3.3V
AUDIO_12V GND
AC_OFF_DET
POWER_ON
1
2
3
2
3
4, 5
BL_ERR
REG12V_GND
AUDIO_12V
6, 7
8
12
BL_ON
PWM_DIMMER
N/C
13
14
15
14
15
AC IN (N)
AC IN (H)
1
2
2
CN2
A
REG 12V
GND
AUDIO_12V
2, 7
6
BL_ERR
1
12
CN201
TCON_12V
AC_OFF_DET
13
14
14
BL_ON
3, 8
STBY 3.3V
POWER_ON
4
GE70 (70”)
CN1
LCD PANEL, TCON
&
LED BACKLIGHTS
7
9
11
LED1 +
1
3
5
5
CN3
POWER SUPPLY
MAIN BOARD
REG_12V
9~11
5
BL PWM
GND
9, 11
10
13
15
15
LED1 -
LED2 +
LED2 -
LED3 +
LED3 -
LED4 +
LED4 -
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