Sharp LC-40LE530E Service Manual page 77

Audio Amplifi er Diagram (11/17)
1 2
D42
S164
24V_VCC
VDD_AUDIO
SK24 C1117 C1118
S158
12V_VCC 100u 100u
35V 35V
S172
18V_VCC
A D7
5V_VCC
1N4148
C444
MAIN_L
470n
25V
9:low:mute
10:low:shtdwn
20:high:spread spectrum on
R84
5V_VCC
10k
AMP_EN MUTE
9
5V_VCC
10k
B
R669 SHDN
10
R673
10k REGEN
11
S60
NC
COM
12
AGND1
13
AGND2
14
REG
15
S165
NC
5V_VCC
VS
16
C242
1u
16V
C
C445
R302
MAIN_R 20k
470n
25V
AMP_EN
3
R82 C22
BC848B BC848B
D AMP_MUTE
1 10k 2 2 100n
Q35
16V
1
R147
2
hp_mut.sup. 10k
HPR_MUTE
E
F
1 2
3 4
L17
10u
C117
330p
R301
50V
20k
C1153
VDD_AUDIO
1u
50V
L16
10u
OUTL+2
32
OUTL+1
31
PVDD2
VDD_AUDIO
30
PGND2
MAX9736B 29
U24
PGND1
28
PVDD1
27
L15
OUTR+2
26
10u
OUTR+1
25
C114
330p
50V
L14
10u
C447
C113
100n
330p
50V
50V
NC
5V_VCC
10k
1 2
R113
R618 D38
2 1
1 100k 2 R1264
15k
1N4148
3
R275
10k 10k
2 33k
Q28 1 2 1 2
R83 R1235
1
C179
2
100n
1
10V
1 hp_mut.sup.
10k
1 2 1
R148
HPL_MUTE
3 3
R286 R287
BC848B BC848B
2 33k 33k 2
Q33 Q32
1 1
3 4
5 6
CN23
1
CN22
R_OUT_P 1 R_OUT_P 2
L_OUT_N TP166
1
2 3
R_OUT_N R_OUT_N
L_OUT_P 3 L_OUT_P 4
C574 TP168
1
330p 4 5
L_OUT_N L_OUT_N
50V
6
L_OUT_P
C115
330p
50V
R_OUT_P
C573
330p
50V
R_OUT_N
SHORT CCT PROTECTION
3V3_STBY
S49
2 1 VDD_AUDIO
R56
S138
2 1 12V_VCC 2 1
10k
S65
2 1 5V_VCC
1
R55
Q51
1 2
10k
2
BC858B
10k 5V_VCC
2 3
Q8
C167
R145 3
2 Q39
100n R58
1
10V 2 1 2
10k
hp_mut.sup.
BC848B
1
5 6
77
7
5V_TUN
3
3V3_IF
R846
2 33k 1
10k 8V_VCC
1 2
R376
3
R845
2 33k 1
10k 18V_VCC
1 2
R408
R283
2 1 24V_VCC
33k
R853
6k8
PRT_SUP 3V3_VCC
10k
1 2
R59
3 10k
10k 12V_VCC 1 2
1 2 R280
R61
10k
1 2
R62
3V3_VCC
3
10k
1 2
5V_VCC R73
S32
2 1 PANEL_VCC
3
R279
3V3_VCC
1 10k 2
3
R840 R835
2
100R 47k
47k
BC848B 1 3 R838
BC858B 100R 1V2_VCC_DEMOD
2
Q6 3
R842
1
PRT_SUP
47k
R349 R836
2 10k 1 100R 1V2_VCC
R843
3V3_VCC 6k8 47k
R854 R834
100R
VDD25
R841
3
47k
R837
100R 2V8_MSB
R844
VESTEL
17mb61-3
PROJECT NAME :
AUDIO AMP
SCH NAME :
DRAWN BY : MB61 HW TEAM
7
LC-32LE530
LC-40LE530
8
A
B
C
D
E
F
A3
17
TOTAL SHEET:
24-05-2011_15:14
8
A X M