Hitachi HCUR700E, Service Manual

Page: 49 / 58

HCU-R700
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CIRCUIT DIAGRAM
S E R V O C i r c u i t ( 4 )
V
R
E
E
L
1
A
V
S
S
2
A
V
C
C
3
D
A
O
U
T
0
4
D
A
O
U
T
1
5
/
N
M
I
6
P
5
3
7
P
5
4
8
P
5
5
9
I
N
T
O
1
0
P
5
7
1
1
P
8
0
1
2
P
8
1
1
3
P
8
2
1
4
P
8
3
1
5
P
8
4
1
6
P
8
5
1
7
P
8
6
1
8
P
8
7
1
9
/
C
S
0
2
0
/
C
S
1
2
1
/
C
S
2
2
2
P
6
3
2
3
C
L
K
2
4
V
C
C
2
5
VSS
26
X1
27
X2
28
/EA
29
/RESET
30
P71
32
P72
33
INT3
34
P74
35
P75
36
INT5
37
P91
38
P92
39
P93
40
INT7
41
P95
42
P96
43
VCC
44
D0
45
D1
46
D2
47
D3
48
D4
49
D5
50
INT1
31
D
6
5
1
D
7
5
2
D
8
5
3
D
9
5
4
D
1
0
5
5
D
1
1
5
6
D
1
2
5
7
D
1
3
5
8
D
1
4
5
9
D
1
5
6
0
A
M
8
/
1
6
6
1
V
S
S
6
2
V
C
C
6
3
P
2
7
6
4
P
2
6
6
5
P
2
5
6
6
P
2
4
6
7
P
2
3
6
8
P
2
2
6
9
P
2
1
7
0
A
1
6
7
1
A
1
5
7
2
A
1
4
7
3
A
1
3
7
4
A
1
2
7
5
A11
76
A10
77
A9
78
A8
79
A7
80
A6
81
A5
82
A4
83
A3
84
A2
85
A1
86
A0
87
/RD
88
/WR
89
P52
90
VSS
91
PA0
92
PA1
93
PA2
94
PA3
95
PA4
96
PA5
97
AN6
98
PA7
99
VREFH
100
IC8
TMP95
/CLOS
1
COM
2
/OPEN
3
TM+
4
TM-
5
CN3
S5B-PH-SM3-TB
R6
223
BC45
104Z
BC46
104Z
BC47
104Z
BC48
104Z
Q1
DTA144TKA
LED1
SLR-342MC
R146
221
D+5V
+1.65V
BC50
104Z
R
8
8
1
0
3
R
8
9
1
0
3
R
9
0
1
0
3
R
9
1
1
0
3
R
9
2
1
0
3
R
9
3
1
0
3
D+5V
+
EC12
OPEN
C14
104Z
TM-
TM+
DSP
DSP
INSWN
CSEL
SLAVE
MASTER
RDN
WRN
FEP
ATAPI
ATAPI
ATAPI
DSP/ATAPI
DSP/ATAPI
STBN
RSTN
TMM
DECCSN
DSPCSN DSP
ATAPI
DSP
DSP
DSP/FEP
DSPINT
DECINT
RESET
FG
BRKN
DSP
DSP/FEP
FEP
ATAPI
ATAPI
MD BUS
MA BUS
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA8
MD0
MD1
MD2
MD3
MD4
MD5
M
D
6
M
D
7
DSP/ATAPI
DSP/ATAPI
V
C
C
1
/
R
E
S
E
T
2
B
O
O
T
3
T
X
D
2
4
R
X
D
2
5
V
S
S
6
PG6
S6B-PH-SM3-TB
R94
103 D+5V
PLLD
PLLB
CD/DVD
LAYER
TE2
TE1
BUSY
R
9
5
1
0
3
OUTA
1
-INA
2
+INA
3
VEE
4
VCC
8
OUTB
7
-INB
6
+INB
5
IC14
OPEN
LO
RO
AUGND
+
EC35
OPEN
+
EC38
OPEN
R158
OPEN
R159
OPEN
R160
OPEN
R
1
6
1
O
P
E
N
R162
OPEN
R163
OPEN
2
3
5
4
1
VR3
OPEN
C66
OPEN
C67
OPEN
C68 OPEN
C69 OPEN
R166
OPEN
R167
OPEN
L10
OPEN
L11
OPEN
A+5V
+
E
C
3
9
O
P
E
N
C70
OPEN C71
OPEN
DSP
DSP
DSP
AMUTE DSP
B
C
6
8
O
P
E
N
AUGND
AUGND
AUGND
AUGND
AUGND
BC69
OPEN
RCH
3
LCH
2
GND
1
JK1
OPEN
Q9
DTC323TK
Q10
DTC323TK
R169
103
R170
103
X3
25MHz
XC4
OPEN
XC3
OPEN
1 2
SW2
EJECT SW
Q11
DTA144TKA
Q12
DTA144TKA
R104
103
R106
512
R109 103
R126 103
R127 103
R128 103
R129 103
R171 103
R172 103
R173
103
D+5V
MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
R47
OPEN
A+3.3V
R48
103
T
2
2
T
9
T
1
0
T
1
1
T
1
2
T
1
3
T
1
4
T
1
5
P-LOW
P-HIGH
DSP
DSP
T16
T17
T18
T19
T20
T21
Q13
DTC323TK
R179
103
R181
223
R180
181
OUT
1
LED+
2
GND
3
PG5
S3B-PH-SM3-TB
R145
103
D+5V
D+5V
1 2
SW1
TEST SW
R186
103
D+5V
CC12
OPEN
C
C
3
9
O
P
E
N
+EC1
6.3V22