Read LG 50PZ570B-SB (CHASSIS:PB12A) Service Manual online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
R919
10K
1%
R915
100
100
KEY1
R920
10K
1%
KEY2
R916
100
100
L902
MLB-201209-0120P-N2
R924
22
22
R904
4.7K
L900
570
R925
22
22
L901
MLB-201209-0120P-N2
C902
0.1uF
16V
0.1uF
16V
L903
MLB-201209-0120P-N2
IR
C904
0.1uF
16V
0.1uF
16V
+3.3V_ST
C903
10pF
C900
10pF
OPT
D901
5.6V
CDS3C05HDMI1
C906
10pF
10pF
D900
5.6V
CDS3C05HDMI1
C901
10pF
OPT
+3.3V_ST
R903
4.7K
C907
10pF
R902
4.7K
LED_Power_On
SUB_SDA
SUB_SCL
D902
R909
22
22
C905
10pF
R900
4.7K
LED_RED
+3.3V_ST
+3.3V_Normal
+3.3V_Normal
L904
750/950
+5V_Normal
R905
0
0
C908
10pF
BLUE_LED_ON
R906
0
750/570
R901
0
0
950
TOUCH_Version_CHECK
P900
12507WS-15L
1
IR
2
GND
3
KEY1
4
KEY2
5
LED-RED
6
GND
7
SCL
8
SDA
9
GND
10
3.3V_ST
11
3.3V_MULTI
12
LED-WHITE
13
14
16
15
IR/KEY
BCM35230
9
31
SUB Board I/F
** IR OPT LIST
570 : L900 -> JUST INPUT TOUCH KEY VOLTAGE 3.3V
750/570 : R906 -> GALAXY CTRL PIN GND
750/950 : L904 -> GALAXY INPUT VOLTAGE 5V
905 : R901 -> GALAXY GTRL PIN - BLUE_LED_ON PATH
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