Hitachi HCUR700UC Service Manual page 49

C I R C U I T D I A G R A M
S E R V O C i r c u i t ( 4 )
D+5V
103
R169
DSP DSPINT
R170
Q9
103
DTC323TK
DTC323TK
Q10
ATAPI DECINT
ATAPI RESET
DSP/FEP FG
FEP BRKN
DSP P-LOW
P-HIGH
DSP
D+5V
R109 103
R126 103
R127 103
R128 103
R129 103
D+5V R171 103
R172 103
R181
R173 103
223
R180 R179
PG5
103
181
3
GND
2
LED+
1
Q13
OUT
DTC323TK
S3B-PH-SM3-TB
DSP/ATAPI MD BUS
DSP/ATAPI MA BUS
— 67 —
A+3.3V
+EC1
R106
6.3V22 512
PG6
S6B-PH-SM3-TB
103
R104
D+5V
R145
T19
103
T18
T17
T20
BC46
T16
104Z
T21
OPEN
25MHz
XC4
X3
R6
26
VSS
223
27
X1
28
X2
XC3
29
OPEN /EA
30
/RESET
31
INT1
32
P71
33
P72
34
INT3
35
P74
36
P75
37
INT5
38
P91
PLLD
39
P92
40
P93
41
INT7
42
PLLB P95
104Z
43
BC47 P96
44
VCC
MD0
MD0
45
D0
MD1
MD1
46
D1
MD2
MD2
47
D2
MD3
MD3
48
D3
MD4
MD4
49
D4
MD5
MD5
50
D5
MD6
MD7
D+5V
R186
SW1
103
1 2
Q11 TEST SW
DTA144TKA
Q12
DTA144TKA
R94
103
BC45
R47
104Z
OPEN
TE2
TE1
100
VREFH
99
PA7
98
AN6
97
PA5
96
PA4
95
PA3
94
PA2
93
PA1
92
PA0
91
VSS
90
P52
IC8
89
/WR
88
TMP95
/RD
87
A0
86
A1
85
A2
84
A3
83
A4
82
A5
81
A6
80
A7
79
A8
78
A9
77
A10
76
A11
LAYER BUSY
R48 CD/DVD
103
BC48
104Z
LED1
SLR-342MC
— 68 —
CC12
OPEN
D+5V
C14 EC12
OPEN
104Z
+1.65V
SW2
BC50
1 2
EJECT SW
104Z
MA0
MA1
MA2
MA3
MA4 A+5V
MA5
MA6
R160
MA8 OPEN
4
+
AUGND
C67
D+5V
OPEN
AUGND R163
OPEN
R159
OPEN
5
+INB VEE
Q1 6
-INB +INA
7
DTA144TKA
OUTB -INA
8
VCC OUTA
R167
OPEN
R146
OPEN
221
IC14
EC35
OPEN
L11
AUGND
OPEN
BC69
OPEN
HCU-R700
TMM DSP
DSPCSN DSP
DECCSN ATAPI
RSTN DSP
AMUTE DSP
STBN DSP/FEP
CN3
1
/CLOS
2
COM
3
/OPEN
4
TM+
5
TM-
S5B-PH-SM3-TB
TM- DSP
TM+ DSP
INSWN FEP
CSEL ATAPI
SLAVE ATAPI
MASTER ATAPI
WRN DSP/ATAPI
RDN DSP/ATAPI
OPEN C68
LO DSP
OPEN C69
RO DSP
DSP
VR3 AUGND
OPEN
2
C66
OPEN
R158
OPEN
R166
OPEN
4
3
2 AUGND
1
OPEN
R162
+
EC38
L10
OPEN
JK1
OPEN
3
RCH
2
LCH
1
GND
C71 C70 OPEN
OPEN OPEN
AUGND
— 69 —