Panasonic DMR-EH49ECA, Руководство по обслуживанию

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S-7
59
AV4 L IN
AV4 R IN
51
DMR-EH49A, EH59A, EX79A
Main P.C.B. Analog Audio Block Diagram
OUT
(SA4L)
SELECT SWITCH
OUTPUT
AV2
(DECODER/EXT)
(TV)
AV1
:PB SIGNAL :REC SIGNAL
IEC OUT
1
(DIGITAL AUDIO OUT)
OPTICAL
JK4901
P59001 P7402
74
G AADC L
G AADC R
AUDIO OUT Ch1(L)
AUDIO OUT Ch2(R)
MIX L OUT2
MIX R OUT2
AUDIO OUT Ch2(R)
AUDIO OUT Ch1(L)
REAR JACK
JK3003
(R)
LINE OUT
(L)
LINE OUT
2
1
3
FROM DIGITAL P.C.B.
ANALOG TIMER BLOCK SECTION
P7402
35
P59001
P7402 P59001
33
(DECEODER/EXT)
AV2
1
3
(TV)
AV1
3
1
21 PIN JACK
JK3901
LOGIC
IIC BUS
SDA
89
88
SCL
71
55
63
AV1 L OUT
DT RIN
DT LIN
78
73
74
79
OUT R
AV1 R OUT
AV2 R OUT
AV2 L OUT
OUT L
72
LPF
BUFF.
MUTE
AGC
AMP
ADC Lch
LPF
BUFF.
MUTE
LPF
BUFF.
MUTE
d
c
b
a
MUTE
BUFF.
LPF
AMP
ADC Rch
AGC
U/V TUNER
TU7801
SIF OUT 6
(NICAM/A2)
IC7301
SIF L OUT
R OUT
12
7
18
TULIN
62
54
TURIN
(SA18L)
BUFF.
e
d
c
b
a
(SA1L)
e
d
c
b
a
(SA3L)
e
d
c
b
a
(SA2L) 58
AV3 LIN (FRONT)
AV3
FRONT INPUT JACK
JK3002
AUDIO
(Lch/MONO)
LINE
(Rch)
LINE
3
4
5
6
7
d
c
b
a
(SA4R)
SELECT SWITCH
OUTPUT
AV3 RIN
50
(SA18R)
BUFF.
e
d
c
b
a
(SA2R)
AUDIO IN ch1(L)
AUDIO IN ch2(R)
AUDIO IN ch1(L)
AUDIO IN ch2(R)
21 PIN JACK
JK3901
6
2
6
2
AV2 LIN
61
AV2 RIN
53
AV1 LIN
AV1 RIN
DALIN
DARIN
60
52
e
d
c
b
a
(SA3R)
e
d
c
b
a
(SA1R)
(AUDIO SIGNAL PROCESSOR)
IC3001
64
56
Q4004
D4002 Q4003
MUTE
MUTE
D4001
Q4002
Q4001
MUTE
MUTE
(BUFFER)
IC4003, IC4004
6 7
1 2
MIX L OUT DM
MIX R OUT DM
A MUTE
FROM
DIGITAL P.C.B.
BACK END SECTION
FROM
DIGITAL P.C.B.
ANALOG TIMER SECTION
5V
P59001 P7402
41
43
P7402 P59001
(AUDIO MUTE DRIVE)
QR4001
MAIN P.C.B.
AV4
TUN
AV4
TUN
TU7802
SIF OUT 7
P59001 P7402
45
P59001 P7402
49
P59001 P7402
51
FROM
DIGITAL P.C.B.
BACK END SECTION
TO
DIGITAL P.C.B.
BACK END SECTION
(SA17R)
76
RF OUT
MUTE VCA +
MIX
(SA17L)
FROM
BACKEND P.C.B.
PS90001 P7801
3
PS90001 P7801
1
(for EX79ECA/EGA/EPA/EFA)
(for EH49A, EH59A)
(Except EX79EBA)
U/V TUNER
(Except EH49A)
S3.3. Main P.C.B. Analog Audio Block Diagram