LG 42PN4500-SA Service Manual page 16

TUNER
TU301
TDSS-G501D
TDSH-G501D
TU302
TDSS-H501F
TU303
TU304 TDSN-T501F
TU305
TDSN_B601F
TU306 TDSQ_G605D
Close to Tuner Pin
TU306
TDSQ-G605D
DVB_T2
SBTVD
NC_1
1
RESET
2
SCL
3
SDA
4
+B1[3.3V]
5
SIF
6
+B2[1.8V]
7
CVBS
8
NC_2
9
NC_3
10
NC_4
11
NC_5
12
NC_6
13
NC_7
14
GND
15
ERROR
16
SYNC
17
VALID
18
MCLK
19
D0
20
D1
21
D2
22
D3
23
D4
24
D5
25
D6
26
D7
27
+1.25V_TU
GND_1
B1
28
B1
GND_2
29 28
+B3[1.23V]
30
SHIELD
C315 T2_RESET
C314
31
0.1uF
10uF
FNIM
+B4[3.3V]
FNIM
16V
32
6.3V
NC_8
33
T2_SCL
34
T2_SDA
35
B1 A1
B1 A1
36
TU_GND
SHIELD C316
68pF
50V
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.
TUNER
Copyright © 2013 LG Electronics Inc. All rights reserved.
Only for training and service purposes
OPT1 OPT3
OPT2
DVB-T/C HNIM X
X
HNIM
China
ATSC X
HNIM
DVB-T_SCA HNIM RF_SW
SBTVD
FNIM RF_SW
DVB_T2
FNIM X
TU305
TDSN-B601F
CO_PANAMA
RF_S/W_CTL
1
RESET_TUNER
2
SCL
3
SDA
4
+B1[3.3V]
5
SIF
6
+B2[1.8V]
7
CVBS
8
NC_1
9
NC_2
10
NC_3
11
+B3[3.3V]
R336
12 B1
B1
0 SBTVD
+B4[1.23V]
13
R335 0
RESET_DEMOD 12
SBTVD
14
GND
15
ERROR
16
SYNC
17
FE_TS_SYN
VALID
18
FE_TS_VAL_ERR
MCLK
19
FE_TS_CLK
D0 FE_TS_DATA[0]
20
FE_TS_DATA[1]
D1
21
D2 FE_TS_DATA[2]
22
FE_TS_DATA[3]
D3
23
D4 FE_TS_DATA[4]
24
FE_TS_DATA[5]
D5
25
FE_TS_DATA[6]
D6
26
FE_TS_DATA[7]
D7
27
A1
A1
+3.3V_TU
TU_GND
FE_TS_DATA[0-7]
R305
R304
10K
100 FNIM
DEMOD_RESET
FNIM
+3.3V_TU
R313 R314
1.5K
1.5K
T2_SCL
R315 22
T2_SDA
22
R318
C317
68pF
50V
DVB-T2 OPT
OPT4
W/O AD
W/O AD
W/O AD
W/O AD
With AD
With AD
TU304
TU303
TDSS-H501F
TDSH-T101F
CHINA
ATSC
RF_S/W_CTL NC
1 1
RESET RESET
2 2
SCL SCL
3 3
SDA SDA
4 4
+B1[3.3V] +B1[3.3V]
5 5
SIF ALIF_[N]
6 6
+B2[1.8V] +B2[1.8]
7 7
CVBS ALIF_[P]
8 8
IF_AGC IF_AGC
9 9
DIF[P] DIF[P]
10 10
DIF[N] DIF[N]
11 11
A1 B1 A1 B1
A1 B1 A1 B1
12 B2 A2
SHIELD SHIELD
FE_TS_DATA[0-7]
BUF1_FE_TS_DATA[0]
FE_TS_DATA[0]
R323 0 FNIM
BUF1_FE_TS_DATA[1]
FE_TS_DATA[1] R324 0 DVB_T2
BUF1_FE_TS_DATA[2]
FE_TS_DATA[2] R326 0 DVB_T2
BUF1_FE_TS_DATA[3]
FE_TS_DATA[3]
R325 0 DVB_T2
BUF1_FE_TS_DATA[4]
FE_TS_DATA[4] R327 0 DVB_T2
BUF1_FE_TS_DATA[5]
FE_TS_DATA[5] R328 0 DVB_T2
BUF1_FE_TS_DATA[6]
R330 0 DVB_T2
FE_TS_DATA[6]
BUF1_FE_TS_DATA[7]
FE_TS_DATA[7] R329 0 DVB_T2
R331 0 FNIM
FE_TS_SYN BUF1_FE_TS_SYN
R333 0 FNIM
FE_TS_VAL_ERR BUF1_FE_TS_VAL_ERR
R332 0 FNIM
FE_TS_CLK BUF1_FE_TS_CLK
TU302 TU301
TDSH-G501D
TDSS-G201D
DVB_T/C
NC NC_1
1 1
RESET RESET
2 2
SCL SCL
3 3
SDA SDA
4 4
+B1[3.3V] +B1[3.3V]
5 5
C302 C303
SIF NC_2
0.1uF 10uF
6 6
16V 16V
+B2[1.8V] +B2[1.8V]
7 7
CVBS NC_3
8 8
IF_AGC
IF_AGC
9 9
DIF[P] DIF[P]
10 10
DIF[N] DIF[N]
11 11
A1 B1 A1
16V
A1 B1 A1
0.1uF
C306
12
SHIELD
BUF1_FE_TS_DATA[0-7]
Close to Tuner Pin
TU_GND
L13
Tuner block
RF_SWITCH
R310
1K
RF_SWITCH_CTL
C307
0.1uF
16V
RF_SWITCH
+3.3V_TU
+3.3V_TU
+1.8V_TU
R308 R309 R311
1.5K 1.5K 10K
TUNER_RESET
R301 100
TU_SCL
R307 22
R306 22 TU_SDA
C305
C310 C304 C311
68pF
0.1uF 68pF
0.1uF
50V
16V 50V
16V
Close to Tuner Pin
H_NIM 0 R303
IF_AGC_MAIN
IF_P_MSTAR
IF_N_MSTAR
Close to Tuner Pin
R320
2K
+5V
A-DEMODE OPT
DVB_T/C OPT
430
430 R316
R319 R317
R322 470
TU_SIF
82
C308
0.1uF
E
16V
MMBT3906(NXP)
R312
B
4.7K Q301
C
R339 0
A_DEMODE
TU_CVBS
+3.3V_TU
R340 R341
220 220
READY READY
E
Q302
MMBT3906(NXP)
B
READY
C
2012-06-01
3 7
LGE Internal Use Only