Read Sony KDL-50R450A Service Manual online
KDL-50R450A 7
SECTION 2 - TROUBLESHOOTING
POWER AND CONTROL BLOCK DIAGRAM
AC IN (N)
AC IN (H)
1
2
2
A
G50W
CN901
LCD PANEL, TCON
&
LED BACKLIGHTS
MAIN BOARD
POWER SUPPLY
12.5V A
ACD
PWON
1
2
3
2
3
4, 8, 9
GND
DIM
BL_ERR
BL_ON
10
11
12
12V_VT
T-CON_ON
14
15
CN2
5V_SB
12V_SW / AMP
AC_OFF_DET
PS_EN
GND
DIMMING
LAMP_ERR
BL_ON/OFF_OUT
LVDSVDD_1
LVDS_PW R_EN_0
3
2
2
1
13, 14, 15
4, 5, 10, 11, 12
9
6
7
16
8
CN2000
VLED1+
VLED1-
CN8501
VLED2+
VLED2-
VLED3+
VLED3-
VLED4+
1
2
3
4
5
6
3
4
5
6
7
VLED4-
8
VLED5+
9
VLED5-
10
5, 6, 7
5VS
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