Read LG 42LV770S (CHASSIS:LD12D) 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.
Q906
2SC3052
WIRELESS
E
B
C
IR_OUT
Q902
2SC3052
E
B
C
D902
5.6V
AMOTECH
C905
1000pF
50V
+3.5V_ST
S/T_SCL
+3.5V_ST
+3.5V_ST
R913
10K
10K
COMMERCIAL_EU
R934
100
100
+3.5V_ST
R909
3.3K
3.3K
OPT
R935
100
100
+3.5V_ST
Q903
2SC3052
COMMERCIAL_EU
E
B
C
R920
10K
1%
KEY2
R910
0
0
COMMERCIAL_US
+3.5V_ST
R914
10K
10K
WIRELESS
R922
47K
WIRELESS
R906
22
COMMERCIAL
EEPROM_SDA
C901
0.1uF
D905
5.6V
CDS3C05HDMI1
D903
5.6V
CDS3C05HDMI1
R902
0
0
OPT
+3.5V_ST
R936
100
100
IR
LED_R/BUZZ
R915
100
100
Q901
2SC3052
E
B
C
EEPROM_SCL
+3.5V_ST
R917
47K
COMMERCIAL
D904
5.6V
CDS3C05HDMI1
R929
1.5K
R928
1.5K
IR_PASS
Q905
2SC3052
COMMERCIAL
E
B
C
D906
5.6V
CDS3C05HDMI1
R933
100
100
R908
47K
Q904
2SC3052
WIRELESS
E
B
C
R919
10K
1%
D901
5.6V
5.6V
AMOTECH
R918
47K
WIRELESS
L902
BLM18PG121SN1D
+3.3V_Normal
D907
5.6V
AMOTECH
R912
47K
WIRELESS
R921
47K
COMMERCIAL
P901
12507WR-15L
IR_15P
1
EEPROM_SCL
2
EEPROM_SDA
3
GND
4
KEY1
5
KEY2
6
3.5V
7
GND
8
LED_B/LOGO
9
IR
10
GND
11
3.3V
12
LED_R/BUZZ
13
GND
14
S/T_SCL
16
.
15
ST_SDA
C904
0.1uF
16V
OPT
L901
BLM18PG121SN1D
R905
47K
LED_B/LG_LOGO
C902
0.1uF
16V
OPT
R903
47K
R907
22
WIRELESS
KEY1
+3.5V_ST
R911
47K
COMMERCIAL_EU
C903
0.1uF
S/T_SDA
R916
100
100
C911
100pF
50V
R904
10K
10K
P902
12507WR-12L
IR_12P
1
2
3
4
5
6
7
8
9
10
11
12
13
C912
0.1uF
16V
ESD_ATSC
C913
0.1uF
16V
ESD_ATSC
DUAL COMPONENT
IR & KEY
1ST : 0TRIY80001A 2ND : 0TR387500AA
50
1ST : EAH42720601, 2ND : EAH60994401
BCM35230
Q901,Q902,Q903
Q904,Q905,Q906
Q904,Q905,Q906
close to wafer
9
WIRELESS
D903,D904
D905,D906
D905,D906
COMMERCIAL
IR/KEY
Zener Diode is
Click on the first or last page to see other 42LV770S (CHASSIS:LD12D) service manuals if exist.