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HCD-RG121
• IC BLOCK DIAGRAMS
IC201 BA3126N (MAIN BOARD)
1
2
3
IC251 BA5947FM (BD80A BOARD)
19
CH4OUTR
D
CH4OUTF
20
D
CH3OUTF
21
D
CH3OUTR
22
D
POW
VCC
23
POWVCC
(ch3, 4)
50k 50k
24
MUTE
25
GND
GND
26
PREGND
27
28
CT
29
CH3RIN
CH3FIN
30
100k
CH4IN
31
PIN3
CH4CAPA
32
10k
50k
OUTVREF
33
DPOUT
34
Pre
TREVCC
35
Vcc
36
NC
4
5
6
7
8
9
D
18
CH1PUTF
D
17
CH1OUTR
D
16
CH2OUTF
19k
PIN26
6.5k
CH2OUTR
D
15
10k
Vref
POW
VCC
14
POWVCC
(ch1, 2)
50k 50k
POW
13
CNF4
VCC
50k 50k
12
GND
Vref
11
C-M
10
C-P
9
VG
8
CH2RIN
7
CH2FIN
6
CH1RIN
5
CH1FIN
SW
4
SW
3
OPIN+
2
OPIN-
1
NC
IC701, 712 BA6956AN (DRIVER BOARD)
IC101 BD3401KS2 (MAIN BOARD)
48
47
46
45
TNF2
49
BASS
MIDDLE
TNF1
50
SUR1
51
SURROUND
SUR2
52
ATT
ATT
+
LINEOUT2
53
-
+
+
LINEOUT1
54
-
SAOUT2
55
SAOUT1
56
CAP
57
MIC
58
GAME L
59
GAME R
60
TUNER L
61
INPUT
TUNER R
62
SELECTOR
MD L
63
MD R
64
1
2
3
4
40
40
TSD
CONTROL LOGIC
1
2
3
4
5
6
7
8
9
44
43
42
41
40
39
38
37
36
TREBLE
+
-
+
BASS
MIDDLE
TREBLE
+
-
G
BUFFER
MIX
MIC MIX
VOCAL FADER
+
+
-
ALC
5
6
7
8
9
10
11
12
13
35
34
33
+
VOLOUT2
32
-
31
BBNF2
+
30
BBIN2
LF1
29
fc=100HZ
28
LF2
f
27
LF3
LF4
26
+
25
SWOUT
-
24
FILTER
23
1/2 Vcc
Vcc
22
GND
21
20
VDD
19
SI
SC
18
ALC
17
ALC
14
16
15
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