Sharp LC-26SH10U Service Manual - Page 42

Sound Amp/headphone Amp Schematic Diagram

Page 42 highlights

A B C 8 W853 7 W854 W855 W878 FROM/TO STEREO 6 SP_AUDIO_OUT_R SP_AUDIO_OUT_L 5 FROM/TO POWER GND SOUND_GND SOUND+B AT+5V ACD W884 4 W887 FROM/TO TUNER/OUT JACK POWER_ON-H AUDIO_MUTE 3 R322 4.7K R325 1K 4.8 SW Q301 0 2SC3052 0 R323 4.7K 0 4.8 SW Q302 2SC3052 0 3 R304 1K 2 R302 1K 2 D E F G SOUND AMP/HEADPHONE AMP SCHEMATIC DIAGRAM (AV PCB) H 8 C320 50V 1 KANP W886 C319 50V 1 KANP R311 10K SW Q300 2SC3052 0 3.0 0 R324 47K C324 0.1 B R314 22K R315 22K C323 0.1 B C326 0.1 B C331 0.1 B C328 0.1 B SOUND AMP IC301TA2024-ASE 5.5 +5VGEN 1 23.0 DCAP2 2 14.0 DCAP1 3 5.5 VD5 4 0 AGND1 5 R317 0 6 REF 8.2K +-1% 0 7 NC OVERLOADB 0 AGND2 8 5.5 V5A 18 17 16 15 14 13 12 11 10 9 R318 2.5 22K 2.5 OAOUT1 INV1 0 MUTE 0 NC R319 2.5 22K 2.5 C332 2.5 0.1 B 0 0 NC OAOUT2 INV2 BIASCAP AGND3 SLEEP HS300 763WAAA066 HS78 NC 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 24.0 CPUMP 0 PGND1 C337 50V 1 KANP 0 NC NC 11.0 VDDA C338 0.1 B 0 NC NC 6.0 OUTP1 11.0 VDD1 11.0 VDD1 6.0 OUTM1 C339 0.1 B C340_1 25V 820 FM 6.0 OUTM2 11.0 VDD2 11.0 VDD2 6.0 OUTP2 C341 0.1 B C342_1 25V 820 FM NC DGND NC 0 NC 0 0 NC 0 PGND2 0 FAULT NC C368 0.001 CH D305 D304 D303 D302 EC31QS04 EC31QS04 EC31QS04 EC31QS04 L300 10uH7313N L301 10uH7313N L302 10uH7313N L303 10uH7313N C351 0.47 B C350 0.47 B C349 0.47 B C348 0.47 B C353 R321 0.47 F 10 1/2W R320 C352 10 0.47 F 1/2W C354 0.1 B C355 0.1 B 7 4 TR301 W5T29X7.5X19 4 OHM 10W (L) CP303 A2502WV2-2P CD303 SPEAKER SP302 5 SP OUT L+ 2 1 EAS12D175B SP OUT L- 1 2 CU127601 6 6 CP301 A2502WV2-3P CD301 SPEAKER SP OUT R- 3 1 SP301 NC NC 2 2 SP OUT R+ 1 3 EAS12D175B 7 CU124002 (R) 4 OHM 10W 5 C358 470P CH C359 470P CH C362 470P CH C363 470P CH 4 3 2 W910 W911 W912 W913 1 CAUTION:SINCE THESE PARTS MARKED BY ARE ATTENTION:LES PIECES REPAREES PAR UN ETANT NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED CRITICAL FOR SAFETY,USE ONES DANGEREUSES AN POINT DE VUE SECURITE OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST DESCRIBED IN PARTS LIST ONLY N'UTILISER QUE CELLS DECRITES WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. DANS LA NOMENCLATURE DES PIECES A B C H-9 D E F G 1 PCBD20 CMF080 H H-10

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A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
DANS LA NOMENCLATURE DES PIECES
N’UTILISER QUE CELLS DECRITES
DANGEREUSES AN POINT DE VUE SECURITE
:LES PIECES REPAREES PAR UN
ETANT
ATTENTION
CP303
A2502WV2-2P
1
2
CP301
A2502WV2-3P
1
2
3
SPEAKER
SP301
EAS12D175B
SPEAKER
SP302
EAS12D175B
2
1
CD303
CU127601
3
2
1
CD301
CU124002
HS300
763WAAA066
HS78
TR301
W5T29X7.5X19
C319
1
50V
KANP
C320
1
50V
KANP
C337
1
50V
KANP
L300
10uH7313N
L301
10uH7313N
L302
10uH7313N
L303
10uH7313N
:SINCE THESE PARTS MARKED BY
CAUTION
DESCRIBED IN PARTS LIST ONLY
CRITICAL FOR SAFETY,USE ONES
ARE
W878
W887
W886
W854
W853
W855
W884
W911
W912
W910
W913
C340_1
820
25V
FM
C342_1
820
25V
FM
C368
0.001 CH
C332
0.1 B
C341
0.1
B
C339
0.1
B
C338
0.1 B
C326
0.1 B
C323
0.1 B
C328
0.1 B
C324
0.1 B
C348
0.47
B
C349
0.47 B
C350
0.47
B
C351
0.47
B
C354
0.1 B
C355
0.1 B
C352
0.47
F
C353
0.47
F
C363
470P
CH
C362
470P
CH
C359
470P CH
C358
470P CH
C331
0.1 B
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
R304
1K
R302
1K
R323
4.7K
R318
22K
R319
22K
R311
10K
R317
8.2K
+-1%
R320
10
1/2W
R321
10 1/2W
R324
47K
R325
1K
R322
4.7K
R314
22K
R315
22K
Q302
2SC3052
SW
Q300
2SC3052
SW
Q301
2SC3052
SW
IC301TA2024-ASE
SOUND AMP
1
10
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
28
29
3
30
31
32
33
34
35
36
4
5
6
7
8
9
D303
EC31QS04
D305
EC31QS04
D304
EC31QS04
D302
EC31QS04
SP_AUDIO_OUT_R
SP_AUDIO_OUT_L
GND
SOUND_GND
SOUND+B
AT+5V
ACD
POWER_ON-H
AUDIO_MUTE
H-10
H-9
(AV PCB)
SOUND AMP/HEADPHONE AMP SCHEMATIC DIAGRAM
PCBD20
CMF080
NC
NC
FROM/TO POWER
0
4.8
0
+5VGEN
DCAP2
DCAP1
VD5
AGND1
REF
CPUMP
PGND1
NC
VDDA
NC
OUTP1
OVERLOADB
AGND2
V5A
OAOUT1
INV1
VDD1
VDD1
OUTM1
OUTM2
VDD2
VDD2
MUTE
NC
OAOUT2
INV2
BIASCAP
AGND3
SLEEP
FAULT
PGND2
NC
DGND
NC
OUTP2
NC
NC
NC
NC
NC
NC
NC
5.5
23.0
14.0
5.5
0
0
0
0
5.5
2.5
2.5
0
0
2.5
2.5
2.5
0
0
0
0
0
0
0
6.0
6.0
6.0
6.0
0
0
0
24.0
3.0
0
0
11.0
11.0
11.0
11.0
FROM/TO STEREO
11.0
NC
SP OUT R-
SP OUT R+
SP OUT L-
SP OUT L+
0
4.8
0
FROM/TO TUNER/OUT JACK
4 OHM 10W
4 OHM 10W
(R)
(L)
3
2
4
5
6
7