HCD-GNX780/GNX880
29
29
HCD-GNX780/GNX880
7-3. BLOCK DIAGRAM – MAIN SECTION –
D
(Page 28)
AMP
SECTION
(Page 30)
AMP
SECTION
(Page 30)
DISPLAY/POWER
SECTION
TAPE/TUNER
SECTION
(Page 31)
H
G
F
(Page 27)
A
CDG SECTION
C
(Page 28)
(Page 28)
E
TAPE/TUNER SECTION
TAPE/TUNER SECTION
J101
R-CH
VOLUME
CONTROL
CPU
INTERFACE
INPUT
SELECT
SWITCH
SURROUND OR
DPL BUFFER
MID/
BASS &
TREBLE
R-CH
R-CH
COMMAND
TOUT1
OUT1
VOLIN1
+
Q101
R-CH
R-CH
SPEANA
DBFB F/B
F-R
F-L
SW OUT
+
+
+
RV1100
IC1101
MIC AMP
IC101
INPUT SELECT SWITCH,
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
IC401(3/5)
SYSTEM CONTROL
IC201
SURROUND
VOL CONTROL
IC1506
SELECTOR CCT
INA1
INEX1
INC1
SAOUT
DATA
CLK
BB-A1
BB-B1
SWOUT
REC-OUT-L
R-CH
TC-PB-L
ST-L
CD-L
VREF
OUTPUT
R
OUTPUT L
DATA
CLOCK
EFFECTOR SELECT
M16530-CLK
LINE MUTE
M61529-DATA
M61529-CLK
NC
NC
NC
NC
NC
VREF
GNX880
GNX880
NC
NC
NC
NC
NC
NC
R-CH
LINE-MUE
J1100(1/3)
J1101(2/3)
L
R
MD/VIDEO
AUDIO
IN
L
R
TV
AUDIO
IN
LPF
I/F
2
14
15
24
18
22
16
21
5
3
6
INB1
IND1
4
19
41
40
37
39
38
MIC 1
ECHO
LEVEL
RV1102
MIC 1
LEVEL
RV1101
MIC 2
LEVEL
17
8
MIC
RECB1
7
MIC OUT
C
A
B
C
A
B
A+9V
34
2
33
32
IC1100
DIGTAL
ECHO
MC1P
MC2P
13
12
6
5
10
9
15
24
14
34
80
81
82
66
+
11
31
25
35
29
7
23
28
27
26
22
3
MUTE
Q180, 181
LINE MUTE
DRIVE
Q544, 545
VREF
VREF
EFFECTOR CTRL 1
52
17
18
J1101(1/3)
J1100(2/3)
J1101(3/3)
J1100(3/3)
MIC 2
15
16
+
+
+
PRE
LPF
POST
LPF
ADPCM
ENCODE
ADPCM
DECODE
ADC
DAC
S/H
DELAY
25
29
23
5
6
7
DA OUT
POOUT
AD IN
ALC
ALC
MIC VOL
ECHO
VOL
MIC
VOL
VOLUME
CONTROL
VOL1
VOL2
VOL3
4
8
30
Y COM
3Y
0Y
3
4
1
X COM
3X
OX
B A
13
11
12
9 10
EFFECTOR S1
49
EFFECTOR S2
50
EFFECTOR S0
36
A
IC1505
MIXER L/R
7
13
5
3
IC1500
MIXER
1
3
CD-R
IC1501
DIGITAL DELAY
IC1503
MULTIPLEXER
9
12
11
10
5
3
Q1508
Q1506
Q1502
LPF2OUT
LPF1IN
LPF1OUT
LPF2IN
OP2OUT
OP2IN
CLOCK
A
B
COM
C
+
+
14
3
10 9
11
2
7
BUFFER
Q1509, 1510
: TUNER (FM/AM)
: CD
: TAPE PLAY
: RECORD
: MIC INPUT
• SIGNAL PATH
• R-CH is omitted due to same as L-CH.
