Panasonic DMR-EH50GN, Service Manual

Page: 54 / 111

XTMUTE
IC7501- 63
FROM
TIMER
SECTION
MUTE
CIRCUIT
QR4002-QR4005
Q4004
FROM
DIGITAL
P.C.B.
XDMUTE
IC4408- 4
P9001 P7402
41
39
P7402 P9001
FROM
DIGITAL
P.C.B.
MIX R OUT DM
MIX L OUT DM
2 1
7 6
IC4009
(BUFFER)
MUTE
MUTE
Q4006
Q4007
D4005
MUTE
MUTE
Q4009 D4006
Q4008
56
64
IC3001
(AUDIO SIGNAL PROCESSOR)
(SA1R)
a
b
c
d
e
(SA3R)
a
b
c
d
e 52
60
DAC Rch
DAC Lch
AV1 Rch
AV1 Lch
53
AV2 Rch
61
AV2 Lch
2
6
2
6
JK3901
21 PIN JACK
AUDIO IN ch2(R)
AUDIO IN ch1(L)
AUDIO IN ch2(R)
AUDIO IN ch1(L)
(SA2R)
a
b
c
d
e
BUFF.
AV4
TUN
(SA5R)
50
AV3 Rch
OUTPUT
SELECT SWITCH
(SA4R)
a
b
c
d
3
2
1
5
4
LINE
(Rch)
LINE
(Lch/MONO)
AUDIO
JK3002
FRONT INPUT JACK
AV3
(FRONT) AV3 Lch
58
(SA2L)
a
b
c
d
e
(SA3L)
a
b
c
d
e
(SA1L)
a
b
c
d
e
BUFF.
(SA5L)
TUN
AV4 59
AV4 Lch
3
1
2
LINE
(Rch)
LINE
(Lch)
AUDIO
JK3001
REAR INPUT JACK
AV4
(REAR)
AV4 Rch
51
TUN Rch
54
62
TUN Lch
4
PK7702 PK7302
6
PK7702 PK7302
25
2
1
R OUT
L OUT SIF
IC7301
(NICAM/A2)
1
PK7301 PK7701
4
PP7401 PS7801
NICAM DECODER P.C.B.
15 SIF OUT
TU7801
U/V TUNER
TUNER P.C.B.
AGC
ADC Rch
AMP
LPF
BUFF.
MUTE
a
b
c
d
MUTE
BUFF.
LPF
MUTE
BUFF.
LPF
ADC Lch
AMP
AGC
MUTE
BUFF.
LPF
72
AV1 Rch
ADC Rch
79
AV2 Rch
74
AV2 Lch
73
ADC Lch
78
AV1 Lch
71
IIC CLK
IC7501- 28
IIC DATA
IC7501- 29
FROM
TIMER
SECTION
SCL
88
89
SDA
IIC BUS
LOGIC
JK3901
21 PIN JACK
1
3
AV1
(TV)
3
1
AV2
(DECEODER/EXT)
29
P9001 P7402
P9001
31
P7402
TO
DIGITAL
P.C.B.
7
6
5
LINE OUT
(L)
LINE OUT
(R)
JK3001
REAR JACK
AUDIO OUT Ch1(L)
AUDIO OUT Ch2(R)
MIX R OUT2
MIX L OUT2
AUDIO OUT Ch2(R)
AUDIO OUT Ch1(L)
AADC R
AADC L
36
P7402 P9001
FROM
DIGITAL
P.C.B.
JK3903
OPTICAL
(DIGITAL AUDIO OUT)
7
IEC OUT
:REC SIGNAL :PB SIGNAL
4.5V
Max
5.6Vpp
2.3V
5V
1.0V
AV1
(TV)
(DECODER/EXT)
AV2
AUDIO SIGNAL
OUTPUT
SELECT SWITCH
(SA4L)
AV4
DMR-EH50GN
Analog Audio Block Diagram