Sony CDX-GT72W Service Manual page 36

CDX-GT72W/GT720/GT770
• IC Block Diagrams
IC401 BD3442FS-E2 (MAIN Board (1/4))
BUS-R
1
100k
BUS-L 2
INPUT INPUT
100k
SELECTOR GAIN
TU-R 3
100k
TU-L 4
100k
CD-R
5
100k
CD-L 6
100k
AUX-R 7
250k
AUX-G 8
250k
AUX-L 9
250k
DS32
10
DS11 11
DS22 12
EBIAS
13
DS21
14
DS11 15
DS31 16
CDX-GT72W/GT720/GT770
VCC2
VOLUME1 TREBLE VOLUME2
/MUTE /BASS
I2C
/MIDDLE
BUS
LOGIC
VCC
FADER
EFFECT
FADER
FADER
FADER
FADER
LPF
FADER
SPECTRUM
ANALYZER
32 FIL
COUT (L)
31 GND
30 SDA
29 SCL
28 MUTE
27 VCC
26 OUTF1
25 OUTF2
24 OUTR1
23 OUTR2
22 OUTS1
21 OUTS2
20 ADJ
OUT (FR)
19
SOUT
18 DATA
COUT (R)
17 CLK
36 36
IC402 NJM2792V(TE2) (MAIN Board (1/4))
GND (L) 1
LIFT AMP
2
3
OUT (FL)
FL- 4
SIGNAL AMP SIGNAL AMP
FL+ 5
FRONT-LEFT REAR-LEFT
REF 6
FRONT-RIGHT REAR-RIGHT
FR+
7
SIGNAL AMP SIGNAL AMP
FR- 8
9
10
LIFT AMP
20 CIN (L)
19 OUT (RL)
18 RL-
17 RL+
16 VCC
15 RR+
14 RR-
13 OUT (RR)
12 CIN (R)
11
GND (R)