Block Diagram - Main Section - Sony HCD-GNX780 Service Manual

7-3. BLOCK DIAGRAM – MAIN SECTION –
ALC
J1101(1/3)
MC1P
15
MIC 2
ALC
J1100(1/3)
MC2P
16
MIC 1
J1100(2/3)
J1101(2/3)
J101
L
MD/VIDEO
AUDIO
IN R R-CH
L
TV
AUDIO
IN
R R-CH
TC-PB-L
C
TAPE/TUNER SECTION
(Page 28)
ST-L
TAPE/TUNER SECTION E
(Page 28)
CD-R
IC1500
IC1501
MIXER DIGITAL DELAY
+
A CD-L 3 1 5 LPF1IN LPF2OUT
CDG SECTION
(Page 27)
3 LPF1OUT
CLOCK
14
3
COM
IC1503
MULTIPLEXER
A B
11 10 9
36 49 50
HCD-GNX780/GNX880
IC1100
DIGTAL
ECHO
DA OUT
AD IN
23 25
MIC VOL
+ + PRE ADPCM ADPCM POST
ADC DELAY DAC S/H
LPF ENCODE DECODE LPF
MIC
VOL
VOLUME
CONTROL
5 6 7
RV1101 RV1100
MIC 2 ECHO
LEVEL LEVEL
RV1102
MIC 1
LEVEL
IC1506
IC1505
SELECTOR CCT
MIXER L/R
Q1508
1 0Y
+
9 5 7 4 3Y
Q1506
LPF2IN 10
12 OX
3 13 11 3X
OP2OUT 11
A Q1502
OP2IN 12
BUFFER
Q1509, 1510
C
52
IC1101
ECHO
MIC AMP
VOL
POOUT MIC OUT
+
29 2 7
J1100(3/3)
J1101(3/3)
2
IC101
INPUT SELECT SWITCH,
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
IND1
5
INB1
4 INPUT
+
INA1
SELECT
3
INC1 SWITCH
6
SURROUND OR
DPL BUFFER
INEX1
7
+
R-CH
37 38
40 39
41 34
IC201
VREF 2 33 NC
SURROUND
VOL CONTROL
32 NC
Y COM 3
13 12 NC
OUTPUT
X COM 13
R 6 5 NC
B A
10 9
NC
9 10
+
NC 15 24
14
LPF 23
22
I/F
DATA CLOCK
17 18
34 80
IC401(3/5)
SYSTEM CONTROL
29 29
8
C VOLIN1
MID/
TOUT1
A
VOLUME
BASS &
14 15
CONTROL
B
TREBLE
C
CPU
A COMMAND
R-CH
INTERFACE
B
SAOUT
+
19
21
GNX880
VREF
35
VREF
VREF
11 25 NC
4
31 NC
3
30
29 NC
8
28 NC
7
27
NC
26
LINE MUTE
DRIVE
Q544, 545
66 81
HCD-GNX780/GNX880
REC-OUT-L
TAPE/TUNER
D
SECTION
(Page 28)
R-CH
SWOUT
+
24
OUT1
18
22 16 17
Q101
A+9V
R-CH
SPEANA
DISPLAY/POWER
F
SECTION
(Page 31)
DBFB F/B
AMP
G
SECTION
(Page 30)
F-R
R-CH
MUTE
F-L
Q180, 181
AMP
H
SECTION
LINE-MUE
(Page 30)
SW OUT
GNX880
• R-CH is omitted due to same as L-CH.
• SIGNAL PATH
82
: TUNER (FM/AM)
: CD
: TAPE PLAY
: RECORD
: MIC INPUT