Read LG 22LT380C / 22LT380H (CHASSIS:LD2AY) 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.
0 . 1 u F
16V
16V
C1419
100pF
50V
50V
C1406
IF_AGC_MAIN
100
R1402
0
R1400
10uF
6.3V
6.3V
C1402
OPT
82
R1415
NON_ASIA_TU
18pF
50V
50V
C1401
0 . 1 u F
16V
C1415
0 . 1 u F
16V
C1409
0 . 1 u F
16V
C1413
4.7K
R1409
NON_ASIA_TU
+3.3V_TU
10uF
10V
10V
C1417
+3.3V_TU
100K
R1403
22uF
10V
10V
C1418
TU_SDA
+3.3V_TU
0
R1401
0 . 1 u F
16V
C1404
20pF
50V
50V
C1411
OPT
220
R1416
NON_ASIA_TU
IF_N_MSTAR
IF_P_MSTAR
33
R1405
100pF
50V
50V
C1407
0
R1412
NON_ASIA_TU
0 . 1 u F
16V
C1403
TU_CVBS
0 . 1 u F
16V
C1416
150
R1420
OPT
0 . 1 u F
16V
16V
C1408
1/10W
1
R1419
22uF
10V
10V
C1414
TU_SCL
220
R1417
NON_ASIA_TU
+3.3V_TU
+1.2V/+1.8V_TU
TUNER_RESET
+1.2V/+1.8V_TU
+3.3V_TU
+3.3V_TU
18pF
50V
50V
C1405
1K
OPT
R1414
470
R1413
NON_ASIA_TU
0 . 1 u F
16V
C1400
NON_ASIA_TU
33
R1406
+3.3V_TU
TU_SIF
+3.3V_Normal
20pF
50V
50V
C1412
OPT
100
R1404
0
R1410
OPT
0
R1411
OPT
TDSS-G101D
SI2176_DVB_1INPUT_H
TU1400
5
+3.3V
11
DIF[N]
2
RESET
10
D I F [ P ]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+1.8V
6
S I F
12
SHIELD
TDSS-H101F
TU1400-*1
SI2176_ATSC_1INPUT_H
5
+ B 1 [ 3 . 3 V ]
11
DIF[N]
2
RESET
10
D I F [ P ]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+ B 2 [ 1 . 8 V ]
6
S I F
12
SHIELD
1K
R1407
1K
R1408
AZ1117BH-1.8TRE1
IC1400
1
ADJ/GND
2
OUT
3
IN
100uF
16V
16V
C1410
CIS21J121
L1400
MMBT3906(NXP)
Q1400
NON_ASIA_TU
E
B
C
MMBT3906(NXP)
Q1401
NON_ASIA_TU
E
B
C
TDSS-G201D
SI2156_DVB_1INPUT_H
TU1400-*2
5
+ B 1 [ 3 . 3 V ]
11
DIF[N]
2
RESET
10
D I F [ P ]
4
SDA
1
NC_1
9
IF_AGC
8
NC_3
3
SCL
7
+ B 2 [ 1 . 8 V ]
6
NC_2
12
SHIELD
0
ASIA_TU
C1400-*1
0
R1422
ASIA_TU
0
R1425
ASIA_TU
2K
R1423
ASIA_TU
390
R1424
ASIA_TU
390
R1421
ASIA_TU
0
R1427
NON_ASIA_TU
0
R1426
NON_ASIA_TU
10pF
50V
ASIA_TU
50V
ASIA_TU
C1420
10pF
50V
ASIA_TU
50V
ASIA_TU
C1421
P4R_GLOBAL_TUNER_BLOCK
1 . s h o u l d b e g u a r d e d b y g r o u n d
2 . N o v i a o n b o t h o f t h e m
3 . S i g n a l W i d t h > = 1 2 m i l s
S i g n a l t o S i g n a l W i d t h = 1 2 m i l s
G r o u n d W i d t h > = 2 4 m i l s
s h o u l d b e g u a r d e d b y g r o u n d
close to TUNER
TUNER MULTI-OPTION
c l o s e t o t h e t u n e r p i n
C l o s e t o t h e t u n e r
60mA
EMEA INTERACTIVE
GP4_MSTAR
2 0 1 1 . 0 8 . 2 1
TUNER
1 4 2 0
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