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A
B
8
7
FROM/TO Y/C/AUDIO/HEAD.AMP SECAM
NORMAL_AUDIO_IN
NORMAL_AUDIO_OUT
HF1
HF2
HF_COM
FROM/TO SYSCON/SERVO/TIMER
HIFI_H.SW
6
IIC_CLK
IIC_DATA
HIFI_ENV.DET
HIFI_REC_MUTE
AUDIO_MUTE-H
FROM/TO 21PIN IN/OUT
DEC_AUDIO-R
DEC_AUDIO-L
HIFI_AUDIO_OUT-R
5
HIFI_AUDIO_OUT-L
SWD_AUDIO-L
SWD_AUDIO-R
MUTE SW
DVD_AUDIO_L
Q702
DTA143EKA
DVD_AUDIO_R
5.1
AT+5.2V
0
5.1
FROM/TO AV IN/OUT 2
0
R740
MUTE SW
2.9
DVD_MUTE
Q701
680
TU_AUDIO-R
DTC124EKA
0
4
TU_AUDIO-L
HIFI_AUDIO_OUT-R
HIFI_AUDIO_OUT-L
DVD_AUDIO_OUT_L
DVD_AUDIO_OUT_R
FROM/TO DISPLAY
FRONT_AUDIO_IN-L
FRONT_AUDIO_IN-R
3
FROM/TO REGULATOR
AT+5.2V
AT+9V
GND
2
NOTE:THE DC VOLTAGE EACH PART WAS
1
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
A
B
H-25
C
Hi-Fi SCHEMATIC DIAGRAM
TU_AUDIO-R
TU_AUDIO-L
DVD_AUDIO_R
63
0
AUDIO MUTE
R742
0.8
Q704
R702
KTC3875S_Y_RTK
SWD_AUDIO-R
470
47K
0
62
C703
FRONT_AUDIO_IN-R
0
AUDIO MUTE
25V
10
KA
R741
Q703
KTC3875S_Y_RTK
0
470
0
DEC_AUDIO-R
W821
DEC_AUDIO-L
HIFI_AUDIO_OUT-R
HIFI_AUDIO_OUT-L
NORMAL_AUDIO_OUT
NORMAL_AUDIO_IN
SWD_AUDIO-L
C704
FRONT_AUDIO_IN-L
25V
AT+9V
DVD_AUDIO_L
W817
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D
E
(VCR PCB)
C701
R718
C702
25V
10
KA
R719
47K 1/4W
25V
10
KA
47K 1/4W
NC
NC
NC
NC
NC
NC
NC
NC
0.1
0
0
0
0
0
0
0
0
0
0
60
59
58
57
56
55
54
53
52
51
50
A GND
0
NC
HI-FI/AUDIO/CANAL SW IC
0
NC
IC701
LA72646SM-MPB
0
NC
0
NC
2.5
NC
0
NC
NC
2.5
C705
2.5
50V
2.2
KA
R701
0
47K
R-CH
R704
IN SEL
NC
0
4.7K
0
R705
C706
2.5
3.9K
50V
2.2
KA
R703
0.5
47K
R706
C707
SW
ALC
D.C
1.5
1/4W
3.9K
25V
10
KA
4.4
4.4
SW
ALC
D.C
0.9
R707
C709
OUT
4.4
MUTE
ALC
L-CH
SEL
IN SEL
1K
50V
4.7
KA
0
R708
C710
4.5
1K
A GND
50V
4.7
KA
1
2
3
4
5
6
7
8
9
10
11
NC
0
0
8.9
5.0
2.9
0
2.9
0
0
0.5
0
R738
C712
3.9K
1 B
R710
R711
47K
10
KA
L701
47K
22uH 0305
R709
47K
CAUTION: DIGITAL TRANSISTOR
D
E
F
G
C734
C733
0.1 F
L702
6.3V
47
KA
AT+5.2V
22uH 0305
0
3.0
2.5
5.1
0.3
3.0
3.0
3.0
3.0
49
48
47
46
45
44
43
42
41
54
2.5
HIFI_H.SW
2.4
IIC_CLK
R-CH
ALC
PNR
2.3
IIC_DATA
HOLD
NC
0
PULSE
SW
5.0
LOGIC
NOISE
0
R715
NC
LIM
3.8
22K
C737
NOISE
3.1
DEV
DET
16V
22
KA C739
5.1
R-CH
VCO
COMP
BPF
6.3V
47
KA
L703
2.6
AT+5.2V
LPF
LIM
L-CH
22uH 0305
D0 DET
C740
BPF
MIX
2.6
0.1 F
C735
0
NC
470P CH
R716
0
ENV
DET
REC-H
2.2K
PB AMP
2.1
HF2
2.1
HF_COM
0
COMP
2.1
HF1
PB AMP
REC-H
0.1
HIFI_ENV.DET
ALC
C738
2.7
0.01 B
53
VREF
2.8
12
13
14
15
16
17
18
19
20
0
2.3
2.5
5.0
2.5
0
0.3
2.8
2.8
HIFI_REC_MUTE
CAUTION: DIGITAL TRANSISTOR
F
G
H
8
7
6
5
4
3
2
PCB010
DME042
1
H
H-26
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