LG 22LD310 Service Manual page 18

AUDIO
3.3V_M
READY
R502
SW_RESET
I2S_MCLK
AMP:GAIN X 4
12V_AUDIO
HOTEL_OPT
RT1C3904-T112
C544 R541-*1
C
Q502
0.1uF
50V
B R538
1K
C548 NON_HOTEL_OPT
MNT_LOUT C546
E R541
6800pF 33pF
12K
50V 50V
R536
4.7K
R546
6.8K
R542
MNT_L_AMP
5.6K
12V_AUDIO
C550
0.01uF
50V
R543
MNT_R_AMP
5.6K
HOTEL_OPT
R544-*1 15K
12V_AUDIO
C549 NON_HOTEL_OPT
R544
33pF
12K
50V
C545 RT1C3904-T112
0.1uF C Q503
50V
B R539
1K
C547
E
MNT_ROUT
6800pF
50V
R537
4.7K
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.
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C512
22000pF
50V
ST_3.3V
R505
10K
C
RT1C3904-T112
Q501
R504 B
BST1A
1
10K HIGH : ACTIVE
LOW : RESET
E VDR1A
2
4.7K
READY
R503 R506 RESET
3
0 100
READY C507 C509
AD
R501 1000pF 1uF 4
50V 25V
22K
DVSS_1
5
VSS_IO
6
R508 CLK_I
7
100
VDD_IO
8
3.3V_M
C508
DGND_PLL
9
C504 0.1uF
50V
1000pF
C501
50V
AGND_PLL
100pF 10
50V R507
3.3K
LFM
11
L502 AVDD_PLL
12
120-ohm
C503
C505 DVDD_PLL
10uF 0.1uF 13
16V 50V
1.8V_M
TEST0
14
L501
120-ohm
C502
C506
10uF 0.1uF
16V
50V
C510 C511
1uF 0.1uF
10V 50V
R509
I2S_SDO
R510
I2S_WS
R511
I2S_SCK
R512
AUAMP_SDA
R513
AUAMP_SCL
R528 R529
4.7K 4.7K
3.3V_M
IC502
15K
1 OUT1 LM324D OUT4 14
2 INPUT1- INPUT4- 13
3 INPUT1+ INPUT4+ 12
4 VCC GND 11
5 INPUT2+ INPUT3+ 10
6 INPUT2- INPUT3- 9
R547
6.8K
7 OUT2 OUT3 8
24V_15V_NTP
C516 C517
0.1uF 10uF
50V 35V
C520
22000pF
50V
C552 C515
0.1uF 0.1uF
C523
50V 50V
1uF
25V
NC
42
VDR2A
41
BST2A
40
PGND2A_2
39
PGND2A_1
Main AMP
38
OUT2A_2
37
IC501
OUT2A_1
36
NTP-3100L
PVDD2A_2 C531
35 0.1uF
50V
PVDD2A_1
34
PVDD2B_2
33
32 PVDD2B_1
C528
0.1uF
50V
31 OUT2B_2
30 OUT2B_1
29 PGND2B_2
C519 C524
1uF
25V
22000pF
50V
100
R515
MULTI_PW_SW
100 0
C518 HIGH : ACTIVE
1000pF
100 LOW : MUTE
50V
100
HOTEL_OPT
100
R514
AMP_MUTE_HOTEL
0
READY READY
C513 C514
33pF 33pF
50V 50V
R550 C534
R516 R518
C529 0.01uF
18 18 18 R520
READY
0.1uF 50V
4.7K
D501 L503 50V
C521
DA-8580
100V R522
1000pF
2S 2F 3.3
50V
C527
0.47uF
C522 50V
1S 1F R523
1000pF
READY 3.3
50V
EAP38319001
D502 C530
R521
100V 0.1uF C535
4.7K
R551 R517 R519 50V 0.01uF
18 18 18 50V
C526 C525
22000pF 1uF
50V 25V
C542
R534 R524 R526
0.01uF
18 18 18
READY C540 50V
0.1uF R530
D503
L504 50V 4.7K
100V R532
DA-8580
C536 3.3
1000pF 2S 2F
50V
C539
0.47uF
50V
C537
1S 1F
1000pF
R533
50V
EAP38319001
3.3
C541
READY
R531
0.1uF
D504
4.7K
50V C543
100V R535 R525 R527
0.01uF
18 18 18
50V
24V_15V_NTP
READY
C533 C538
C532
0.1uF 10uF
0.1uF
50V 35V
50V
Chinese Hotel Option
AUDIO_R
SW_RESET
AMP_MUTE_HOTEL
SPK_R+_HOTEL
SPK_R-_HOTEL
MLB-201209-0120P-N2
L505
SPK_L+
120-ohm
MLB-201209-0120P-N2
L506
SPK_L-
120-ohm
P501
SMAW250-04
R-SOUND-N
SPK_R- 1
R-SOUND-P
SPK_R+ 2
L-SOUND-N
SPK_L- 3
L-SOUND-P
SPK_L+ 4
MLB-201209-0120P-N2
L507
SPK_R+
120-ohm
MLB-201209-0120P-N2
L508
SPK_R-
120-ohm
24V_15V_NTP
HOTEL_OPT
HOTEL_OPT
P502
R549
12505WS-09A00
HOTEL_OPT 0
C551
0.1uF
50V 1
2
HOTEL_OPT
R548
3
0
4
3.3V_M
5
HOTEL_OPT
R545
10K
6
C HOTEL_OPT
HOTEL_OPT RT1C3904-T112
Q504
R540 B
7
200
E
8
9
10
EAX61462901 2009/08/20
AUDIO 5 7
LGE Internal Use Only