Analog Audio Block Diagram - Panasonic DMR-EX75EG Service Manual

DMR-EX75EG / DMR-EX75EC / DMR-EX75EB / DMR-EX85EG / DMR-EX85EB

12.3. ANALOG AUDIO BLOCK DIAGRAM

MAIN P.C.B.
FROM
XTMUTE
TIMER
IC7501- 65 QR4002
SECTION
MUTE
CIRCUIT
FROM
XDMUTE
DIGITAL
IC54402- 16
P.C.B.
P59001 P7402 MIX R OUT DM
FROM
41
DIGITAL P.C.B.
P59001 P7402 MIX L OUT DM
DIGITAL AUDIO
BLOCK SECTION 39
JK3901
21 PIN JACK
AUDIO IN ch2(R)
2
AV1
(TV) AUDIO IN ch1(L)
6
AUDIO IN ch2(R)
2
AV2
(DECODER/EXT) AUDIO IN ch1(L)
6
JK3002
FRONT INPUT JACK
13
LINE
12
(Rch)
11
AV3
AUDIO
(FRONT)
10
LINE
(Lch/MONO)
9
JK3001
REAR INPUT JACK
20
LINE
(Rch)
21
AV4 AUDIO
(REAR)
17
LINE
(Lch)
18
TU7800
TUNER
AUDIO CN7800
21
OUT 6
CN7800
SIF OUT 22
7
IF CN7800
21
OUT- 2
CN7800
IF
20
OUT+
3
TUNER P.C.B.
FROM
P59001 P7402 IEC OUT
DIGITAL
44
P.C.B.
D4005 Q4006
MUTE
Q4007
MUTE
D4006 Q4009
MUTE
Q4008
IC3001
MUTE
(AUDIO SIGNAL PROCESSOR)
IC4009
(BUFFER)
DAC Rch
2 1 56
DAC Lch
6 7 64
AV1 Rch
52
AV1 Lch
60
AV2 Rch
53
AV2 Lch
61
AV3 Rch
50
AV3 Lch
58
AV4 Rch
51
AV4 Lch
59
CN9003 P7412 G_DT_IN_L_A
63
FROM
12 12
BACKEND
CN9003 P7412 G_DT_IN_R_A
P.C.B.
55
10 10
IC7301
(NICAM/A2)
PP7401 MONO TUN Rch
38 R OUT 2 54
6 IN
PP7401 TUN Lch
25 SIF L OUT 1 62
7
IF OUT [ _ ]
PP7401 P7412 CN9003
2 3 3
TO
PP7401 IF OUT [+] P7412 CN9003 BACK END P.C.B.
3 2 2
(SA1R)
a
BUFF.
b
AV1 Rch
c LPF MUTE
d
e
OUTPUT
SELECT SWITCH
(SA3R) (SA4R)
a a
b b
ADC Rch ADC Rch
c c AGC
AMP
d d
e
(SA5R) (SA2R)
BUFF.
AV4 a
BUFF.
b
AV2 Rch
TUN c LPF MUTE
d
e
(SA2L)
a
BUFF.
b
AV2 Lch
c LPF MUTE
d
e
OUTPUT
SELECT SWITCH
(SA3L) (SA4L)
a a
b b
ADC Lch ADC Lch
c c AGC
AMP
d d
(SA5L)
e
BUFF.
AV4
TUN
(SA1L)
a
BUFF.
b
AV1 Lch
c LPF MUTE
d
e
SCL
IIC BUS
LOGIC SDA
50
:REC SIGNAL :PB SIGNAL
JK3001
REAR JACK
MIX L OUT2
16
LINE OUT
(L)
18
MIX R OUT2
19
LINE OUT
(R)
21
JK3901
21 PIN JACK
AUDIO OUT Ch2(R)
72 1
AV1
(TV)
AUDIO OUT Ch1(L)
3
79
AUDIO OUT Ch2(R)
74 1
AV2
(DECEODER/EXT)
AUDIO OUT Ch1(L)
3
73
AADC R P7402 P59001
19
AADC L P7402 P59001
78
17
71
IIC CLK
88
IC7501- 29
IIC DATA
89
IC7501- 30
5V
2.3V
1.0V
IC4901
OPTICAL
(DIGITAL AUDIO OUT)
1
DMR-EX75EG/EC/EB
DMR-EX85EG/EB
ANALOG AUDIO
BLOCK DIAGRAM
AV4
TO
DIGITAL P.C.B.
DIGITAL AUDIO
BLOCK SECTION
FROM
TIMER
SECTION