78
14 Block Diagram
14.1. SERVO/SYSTEM CONTROL BLOCK DIAGRAM
S
C-HC
2
0G
A
/GN
S
ER
V
O/
SYS
TEM CONTROL BLOCK DI
A
GR
A
M
: CD
A
UDIO INPUT
S
IGN
A
L LINE
+
+
+
D993
4
8
CN900
CN11
2
MICRO PROCE
SS
OR
RFKWMHC10EB
IC801
X
80
2
FL DI
S
PL
AY
DRI
V
ER
C0HB
A
0000
26
8
IC900
LCD D
A
T
A
31
4 D
A
T
A
LCD DI
5
7
CN900
CN11
2
LCD WR 33
LCD WR
6
6
CN900
CN11
2
LCD CE 3
O
S
C1 13
O
S
C
2
1
2
X
801
X
I 15
X
O 1
6
LCD CE
2
10
CN900
CN11
2
REM IN
2
2
P901*
P90
2
KE
Y2
LCD D
A
T
A
11
1
CN900
CN11
2
DIMMER
7
8
DIMMER
DIMMER
LCD WR
LCD CE
3 /WR
1 /C
S
S
EG0
S
EG30
S
EG0
S
EG30
COM0
COM
2
COM0
COM
2
Z900
FL DI
S
PL
AY
3.3
V
7
.5
V
3.3
V
REMOTE CONTROL
S
EN
S
OR
IR9
2
1
Q
900
LED DRI
V
E
REM IN
2
5
REM IN
8
8
P908
P10
2
HP
S
W 53
HP
S
W
4
4
P908
P10
2
A
U
X
S
W 5
2
MPORT
S
W
LID RIGHT
66
LID RIGHT
LID LEFT
6
5
LID LEFT
AS
P D
A
T
A
41
A
G D
A
T
A
AS
P CLK 40
A
G CLK
Q76
01
L
AS
ER DRI
V
E
7
3
CN51
CN33
2
TU
S
CL 81
TU
S
CL
6
4
CN51
CN33
2
TU
S
D
A 7
9
TU
S
D
A
KE
Y2
94
M+
7
M-
9
KE
Y2
3
3
P901*
P90
2
10
2
CN900
CN11
2
9
3
CN900
CN11
2
2
2
P
6
4
2
P909
2
2
P910
P101
1
1
P
6
4
2
P909
1
1
P910
P101
KE
Y
1
KE
Y
1 9
2
KE
Y
1
6
6
P
6
4
2
P909
CLO
S
E
S
W
4
7
CLO
S
E
S
W
3
3
P
6
4
2
P909
4
4
P
6
41*
P
6
40*
1
1
P
6
41*
P
6
40*
6
6
P910
P101
3
3
P910
P101
OPEN
S
W
48
OPEN
S
W
AS
P CLK
MUTE HP
7
5
MUTE HP
MUTE HP
D
A
MP
S
TB
Y
38
D
A
MP
S
TB
Y
D
A
MP
S
TB
Y
PCONT iPod 8
iPod PDET 98
PCONT iPod
PCONT iPod
PCONT POW
7
PCONT
PCONT
MUTE
A
MP 45
MUTE
A
MP
MUTE
A
MP
D
A
MP BP 55
D
A
MP BP
D
A
MP BP
AS
P D
A
PDET
2
(D
A
MP) 95
PDET
2
PDET
2
A
UDIO DET 99
A
UDIO DET
A
UDIO DET
NR
S
T 19
NR
S
T
NR
S
T
PDET1(REG) 9
6
PDET1
PDET1
X72
01
67
MCLK
S
ER
V
O
PROCE
SS
OR
MN
6627
954
A
M
A
IC
7
001
TR
V
P
2
3
S
POUT
2
1
PC
22
TRP
2
4
X
1
81
X2
80
59
OUTR
3
IN1
4
PC1
DRI
V
ER
B
A
5948FPE
2
IC
7
00
2
D
2
-
13
D
2
+
14
D1-
11
D1+
1
2
D3-
15
D3+
1
6
D4-
1
7
LD
4
2
PD
41
D4+
F+
F-
T+
T-
LD
LPD
A
40
C
39
D
3
7
A
B
38
B
18
27
IN4
FOP
2
5
2
8
IN3
1
IN
2
LID RIGHT 1
LID LEFT 3
MOTOR 5
V 6
7
0
S
T
A
T
CD
S
T
A
TU
S
35
4
19
CN
7
00
2
CN80
7
CD
S
T
A
T
7
1
BLKCK
CD BLKCK
2
9
5
18
CN
7
00
2
CN80
7
CD BLKCK
72
NR
S
T
CD RE
S
ET
44
3
2
0
CN
7
00
2
CN80
7
CD RE
S
ET
RE
S
T
S
W
43
2
2
1
CN
7
00
2
CN80
7
RE
S
ET
S
W
19
4
CN
7
00
2
CN80
7
5
6
OUTL
2
1
2
CN
7
00
2
CN80
7
CD MCLK
CD MCLK
3
6
8
15
CN
7
00
2
CN80
7
6
8
MD
A
T
A
CD MD
A
T
A
CD MD
A
T
A
34
7
1
6
CN
7
00
2
CN80
7
6
9
MLD
CD MLD
CD MLD
4
2
6
1
7
CN
7
00
2
CN80
7
1
2
11
CN
7
00
2
CN80
7
OPTIC
A
L PICKUP UNIT
1
6
CN
7
001
15
CN
7
001
14
CN
7
001
13
CN
7
001
7
CN
7
001
9
CN
7
001
E
35
E
F
3
6
F
3
CN
7
001
2
CN
7
001
4
CN
7
001
11
CN
7
001
A
CTU
A
TOR
PHOTO
DIDE
L
AS
ER
DIODE
RE
S
ET
S72
01
RE
V
S
KIP
S
911
CLO
S
E
S6
4
2
OPEN
S6
41
CD
OPEN/CLO
S
E
S
90
7
V
OL-
S
914
V
OL+
S
915
FWD
S
KIP
S
91
2
POWER
S
901
CD
PL
AY
/P
A
U
S
E
S
90
6
iPod
PL
AY
/P
A
U
S
E
S
903
S
TOP
S
913
FM/
A
M/
A
U
X
S
904
TR
AV
ER
S
E MOTOR
M
7
301*
S
PLINDLE MOTOR
M
7
30
2
*
MOTOR
MT1*
FROM/TO
A
UDIO
FROM
A
UDIO
6
3
CN905*
P100
TEMP DET 93
TEMP DET
FROM
POWER
S
UPPL
Y
FROM/TO
A
UDIO
FROM/TO
POWER
S
UPPL
Y
TO
A
UDIO
M
A
IN P.C.B.
CD
S
ER
V
O P.C.B.
P
A
NEL P.C.B.
P
A
NEL KE
Y
P.C.B.
TUNER P.C.B.
MOTOR P.C.B.
BRIDGE 1 P.C.B.
PO
S
ITION
S
WITCH P.C.B.
EEPROM
C3EBF
Y
00000
6
IC800
MOTOR DRI
V
ER
C0G
A
E000000
7
IC
6
50
EE C
S
EE
S
CL
EE
S
D
A
I
2
C
S
D
A
MICRO CONTROLLER
MFI341
S2
1
6
4
IC300
iPhone
S
D
A
I
2
C
S
CL
iPhone
S
CL
nRE
S
ET
1
C
S
2
S
K
3
DI
4
DO
6
0
59
6
1
13
51
1
2
50
iPhone R
S
T
49
4
T
X
R
X
iPod DET
A
CC PWR
iPod/iPhone P.C.B.
1
2
4
CN100
2
CN381
2
14
CN100
2
CN381
iPod DET 80
iPod DET
iPod
A
CC CTRL
iPod
A
CC3.3 88
iPod
A
CC3.3
3
13
CN100
2
CN381
U
A
RT OUT
77
iPod
A
CC CTRL
2
8
U
A
RT OUT
5
V
3.3
V
5.5
V
5
V
5
V
Q
580
A
CC POWER
CONTROL
Q
30
2
iPhone RE
S
ET
S
WITCH
U
A
RT IN
76
U
A
RT IN
4
1
2
CN100
2
CN381
iPod/iPhone
19
18
CN1001
A
CC ID
7
9
CN100
2
CN381
10
CN1001
A
CC DET
1
15
CN100
2
CN381
2
0
CN1001
8
CN1001
CN1001
13
CN1001
30
CN1001
Q
38
2
S
WITCH
Q
R808
S
WITCH
Q
58
2
S
WITCH
Q
R384
S
WITCH
Q
R805
S
WITCH
Q
R80
6
S
WITCH
HE
A
DPHONE/
A
U
X
P.C.B.
S
MP
S
P.C.B.
Summary of Contents for SC-HC20GA
Page 12: ...12 5 Location of Controls and Components 5 1 Main Unit Remote Control Key Button Operations ...
Page 13: ...13 6 Operating Instructions 6 1 Connections 6 2 Disc operations ...
Page 14: ...14 6 3 Notes on CD R and CD RW 6 4 External unit iPod or iPhone ...
Page 24: ...24 9 2 Types of Screws ...
Page 25: ...25 9 3 Main Parts Location Diagram ...
Page 82: ...82 ...
Page 84: ...84 ...
Page 102: ...102 ...