Sony HCD-GT111 Service Manual page 55

– MAIN Board –
IC407 R2A15216FP
56 55 54
1
INDR
6 INPUT
2 SELECTOR
INER
(R-CH)
3
INFR
4
GAMER
5
INGAINOUTR
6
RECAR
RECBR 7
SA1 8
9
SA2 +
+
+
10
TRER
TONE
11
MID1R R
(TRE,
12
MID2R
MID,
13
BASS1R
BASS)
BASS2R 14
15 16
IC670, 672 TC74HC4066AFT (EL)
1I/O 1 14 VCC
13 1C
1O/I 2 12 4C
2O/I 3 11 4I/O
2I/O 4 10 4O/I
2C 5 9 3O/I
3C 6
GND 7 8 3I/O
53 52 51
+
VOCAL CUT
SURROUND OR DPL IN
ELECTRICAL
VOLUME
MCU
INTERFACE
17 18 19 20 21 22
HCD-GT111/GT222/GT444/GT555
50 49 48 47 46
REFERENCE
SELECTOR
+
+
AUTO
GAIN
CONTROL
23 24 25 26 27 28
IC673 TC74VHC157FT (EKJ)
SELECT 11 1 16
S
1A 2 15
1A G
INPUT
3 14
1B 1B 4A
4 13
OUTPUT 1Y 1Y 4B
5 11 12
2A 2A 4Y
INPUT
2B 6 2B 3A 11
2Y 7 2Y 3B 10
OUTPUT
3Y
GND 8 9
45 44 43
42
INDL
6 INPUT
41
INEL
(L-CH)
40
INFL
39
GAMEL
38
INGAINOUTL
37
RECAL
36 RECBL
+
+
+
35
TREL
TONE
34
L MID1L
(TRE,
33
MID2L
MID,
32
BASS1L
BASS)
31 BASS2L
30 TONEOUTL
ELECTRICAL
29 VOLINL
VOLUME
V
CC
STROBE
4A
INPUT
4B
4Y OUTPUT
3A
INPUT
3B
3Y OUTPUT
55