Hitachi L32VK06U Service Manual page 97

1 2
A
HEADPHONE AMPLIFIER
C503 C541
2 1
1 2
1n 100u
50V 16V
B 1 OUTA
U128
2
C632 INAN
R423
HP_R 1 2 TDA1308T
4k7
C665 3
INAP
C537
220n
2
2n2
10V
1 4
50V
VSS
1u
16V
R211
1 100k 2
C
PREAMPLIFIER
D
Preamplifier MP7722'ye yakýn olacak.
C664
R634
8V_VCC
1 1k 2
1u
16V
U111
LM358D
R695
1 OUT1 8
1 2
R539 33k VCC
2 7 1
1 2
10k IN1- OUT2
3 6
10k
IN1+ IN2-
MAIN_R
1 2
4 5
R547
GND IN2+
E
MAIN_L 10k
1 2
R548
S207
D142
1 2
1 2
24V_VCC
F
SS33
3
MUTE_HP_R
R800
22R
9
8
7
1N4148 1N4148
8V_VCC
3
2 1 2 1
D126 D125
C386
2
2
10u
1
1
10V 50V
8 1
1n
VDD
2
C540 C502
R801
7
OUTB
22R
1 2
100u
6
INBN
16V
C633
5 HP_L
4k7
INBP
1 2
R424
C538
220n
2
2n2
10V
1
50V
C387
R112
1
12k
1 2
10u
10V
10V
10u
R113
1 2
1 12k
C388
R696
VDD_AUDIO 100k
2 1
33k 2
R728
C505
C347
2
2
1n
10u
1
1 50V
16V
VDD_AUDIO
4 5
C624
2
2n2 3V3_VCC
1
50V
6
5
HP_DETECT
4
JK2
S205
1 2
VDD_AUDIO
100k
VDD_AUDIO
1 2
R731
C504
C348
2
2
1n
10u
1
50V
1
16V
C670
100n
1 20
NC1 PGND1 50V
2 19
REF1 SW1
C454
2
3n3
1 3 18
50V
2 IN1 VDD1
4 17
AGND1 BS1
C667 U124
5 16
100n NC2 NC4
50V MP7722
6 15
10k
AMP_EN EN1 PGND2
1 2
R543
7 14
2
IN2 SW2
C539
2
2n2
8 13
1 REF2 VDD2
50V
9 12
AGND2 BS2
R549
10 11
AMP_EN 1 10k 2 EN2
NC3
C669
100n
50V
S204
VDD_AUDIO
1 2
C528
1
22u
50V
2
6
POP NOISE CIRCUIT
AMP_EN
R722
AMP_MUTE
2
1 10k 2
FEEDBACK_R
C527
1
22u
50V
2
D122
1 2
1N4148
C349
2
1u
1
50V
C465
2
470n
1
25V
C560
2
390p
1
50V
C466
2
470n
1
25V
C561
D123
2
390p
1 2
1
50V
1N4148
C671 C345
2
100n 1u
1
50V 50V
FEEDBACK_L
7 8
S128
12V_VCC 1 2
S127
1 2
5V_VCC
S126
1 2
3V3_VCC
S227
24V_VCC
16V
100u
2 1
C453
1
Q150
2
BC858B
3
3
3
R542
BC848B BC848B
2 2 1
10k
Q133 C668 Q132
100n
1 1
50V
MUTE_HP_R
3 C385
R544
BC848B
2 2 1
10k 1 2 5V_VCC
Q134
10u
1
10V
MUTE_HP_L
3
R545
BC848B
2 2 1
10k POP_MUTE
Q135
1
C581
2
22p
1
50V
SPK_OUT_R
35V
1m
L2
1 2 CN115
10u
C609
1
C533
2
470n
2
1
25V
C672 3
100n
35V 50V 4
1m
L1
1 2
10u
C610
C582 SPK_OUT_L
C534
2
2
22p
470n
1
50V 1
25V
C673
100n
50V
R1244
1 2
10k
U307
R1245
SPK_OUT_L 1 10k 2
1 A 5
3V3_VCC
VCC S292
2
10k B
SPK_OUT_R
1 2
3 4
R1247
GND Y R1248 SPK_SCD
10k
47R
1 2
R1246
SPEAKER OUT - SHORT CIRCUIT DETECTION
PROJECT NAME : 17mb38-1
SCH NAME : AUDIO SHEET:
DRAWN BY : 29-01-2010_14:04
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