Sound Amp/Headphone Amp Schematic Diagram - Sharp LC-32AD5E-BK Service Manual

A B
8
C300
50V 0.1 B
W936
W806
W841
7 W885
W883
W905
FROM/TO SCALER
R302
SP_AUDIO_OUT_L
4.7K 1/4W
6
R306
SP_AUDIO_OUT_R
4.7K 1/4W
5
FROM/TO POWER3
SOUND+B
GND
SOUND_GND
AT+5V
P.CON+9V
W884
W876
4
W889
W928
W929
FROM/TO AV JACK/SWITCH
HP_A_L
HP_A_R
3
FROM/TO SCALER
SYS_POWER_H
HP_MUTE
AUDIO_MUTE
0
4.8
R325
4.8
4.7K
2
0
0
0
MUTE SW
MUTE SW
Q301
Q302
KRC102SRTK
KTA1504S_Y_RTK
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
H-9
C

SOUND AMP/HEADPHONE AMP SCHEMATIC DIAGRAM

20
R315 C320
4.7K 0.47 B
B306
W4BRH3.5X6X1.0
W886
R329
4.7K
POWER UP
5.0
Q300
4.8
KRC102SRTK
R311 4.8
3.3
5.0 POWER UP
10K
Q321
0
KRA101SRTK
25V
21
R317 C319
4.7K 0.47 B
R327 C327
4.7K 0.47 B
D301
B305
EC11FS2-TE12L HCB1608KF-181T20
R308
HEADPHON AMP IC
IC300
8.2K
NJM2151AV(TE1)
C307 C309
VR
16V 22 KA_P 470P
R300 CH
560
C311
VR
470P CH
C318
16V 22 KA_P
C315
0.1 F
C316
0.1 F
C317
0.1 F
R301
HP.SUSPEND
10K
R303
SP.SUSPEND
10K
CAUTION
:SINCE THESE PARTS MARKED BY
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST CRITICAL FOR SAFETY,USE ONES
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. DESCRIBED IN PARTS LIST ONLY
C
D E
(MAIN PCB)
SOUND AMP IC
IC301 TDA8932T
C329 C332
0
0
VSSD/HW VSSD/HW
50V 0.1 B 50V 0.1 B
4.9
2
IN1P OSCIO NC
2 11.8
IN1N HVP1
2.7 23.8
DIAG VDDP1
NC
C369
5 21.6
ENGAGE SCOT1
0.015 B
5.1 11.3
POWERUP OUT1
R340
0
0
OGND V3BP 1M
23.8 11.2
VDDA STR1
C331
C364
0 11.2
50V 0.1 B
VSSA STR2
0.1 B
R328
4.4 0
OSCREF VSSP2
R339
39K
C363
11.9 11 1M
HVPREF OUT2
47 YK_P
C365 C377
2 21.9
INREF SCOT2
0.1 B 0.015 B
0 23.8
NC VDDP2
NC
C324
35V 220 ZL_P
2 11.9
IN2N HVP2
2 4.82
IN2P DREF
0 0
VSSC/HW VSSD/HW
0
0
0
SW
HP.V+ 0.7 Q303
0
KTC3875S_Y_RTK
C333
10V 220 YK_P
C334
10V 220 YK_P
SP.V
ARE ATTENTION
:LES PIECES REPAREES PAR UN
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
D E
F G
L300_1 22
B303 W4BRH3.5X6X1.0
22uH 1315 B302 W4BRH3.5X6X1.0
B301 W4BRH3.5X6X1.0
23
B304 W4BRH3.5X6X1.0
L302_1
22uH
1315
12.0
SW
Q304
KTC3875S_Y_RTK
12.0
0
SW
Q305
0 KTC3875S_Y_RTK
CAUTION: DIGITAL TRANSISTOR CAUTION: DIGITAL TRANSISTOR
ETANT
F G
H
8
7
SPEAKER CABI ASSY
SP301_1
S0412F03
SPEAKER
CD302_1
CP301 CU144202
(L)
A2502WV2-4P
SP OUT L+ 1 1
4 OHM 10W
SP OUT L- 2 2
SP302_1
SP OUT R- 3 3
S0412F03
SP OUT R+ 4 4
SPEAKER
6
5
4
3
2
PCBF40
CMF111
1
H
H-10