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TBD
44A/45A/450A
NTSC
TU402
TDSS-H701F
B1
B1
12
SHIELD
THE
SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE
SYMBOL MARK OF THE SCHEMETIC.
TUNER
Copyright © 2014 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
IF
+1.8V_M
READY
L402
BLM18PG121SN1D
NTSC
NTSC
C409
C408
10uF
0.1uF
16V
10V
NC_1
1
NC_2
2
SCL
3
SDA
4
+B1[3.3V]
5
NC_3
6
NC_4
7
NC_5
8
IF_AGC
9
DIF[P]
10
DIF[N]
11
A1
A1
A1
A1
C414
1000pF
630V
MULTI_TUNER
+3.3V_TU
TU401
TDJH-G101D
Near the pin
C404
C405
22uF
0.1uF
16V
6.3V
B1[+3.3V]
1
To set multi option for NTSC
NC_1
2013.11.27 by BJ.KIM
2
NTSC
IF_AGC
R412-*1
R412
1K
PAL
3
100
C410
0.1uF
SCL
should be guarded by ground
16V
4
SDA
5
IF[P]
6
IF[N]
7
NC_2
Close to the tuner
8
NC_3
9
B1
B1
47
SHIELD
C411
C413
1000pF
1000pF
630V
630V
+3.3V_M
L401
BLM18PG121SN1D
+3.3V_TU
READY
R404
100K
READY
R403
100
+3.3V_TU
TUNER_RESET
READY
C401
0.1uF
IF_AGC
16V
R407
R408
1K
1K
R415
33
TUNER_SCL
C402
C406
20pF
20pF
50V
50V
R416
33
READY
TUNER_SDA
C403
C407
NTSC
20pF
20pF
PAL
R413-*1
R413
50V
50V
33
10
READY
IF_P
NTSC
PAL
R414-*1
R414
33
10
IF_N
To change the value from 0ohm to 33ohm at NTSC.
2013.11.27 by BJ.KIM
44A/45A/450A
2013/08/21
TUNER & IR
4
8
LGE Internal Use Only
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