Hitachi HCUR700UC Service Manual page 48

CIRCUIT DIAGRAM
SERVO Circuit (3)
M+5V
223K
FEP FM+
C39
104Z
FEP FM-
BC38
R107
103
FEP FO+
FEP FO-
1R0
R141
R143
1R0
IC7
BA5952AFP
1R0
R111
R105
1R0
104Z
FEP TR+
BC39
FEP TR-
R3
CPU TM+
103
CPU TM-
FEP/CPU STBN
CPU TMM EC11
TRO
R185 103
6.3V47
M+5V A+3.3V
R140
103
CC11
FEP RFCT
FEP RFZI
FEP FEP TEZI
FEP RFI
FEP FEI
FEP FEP TEI
FEP RFSB
FEP RFRP
FEP DMO
FEP FEP TEB
FEP FEB
FEP DPDB
FEP FEP EQB
FEP EQF
FEP DFCTN
FEP FEP VRCK
FEP FEP SCD
FEP SCL
FEP SCB
FEP/CPU FG
CPU AMUTE
Q6
OPEN
AUGND
Q5 Q4
OPEN
OPEN OPEN
R165
ATAPI/CPU RO
C76
R168
ATAPI/CPU LO
OPEN
OPEN
R86 R87
OPEN
OPEN
ATAPI/CPU AUGND
— 64 —
243
R142
332K
C50
VREF R183
204 562
A+5V
562
R136 R110
2
C20 R184
R108
153K
562
682
LPFN
IC9
74HC4066
+1.65V
LPFO 133
LPFN
134
LPFO
135
PVREF
136
VCOF
VCOREF
101K 137
OPEN
VCOF
C52 138
PVDD
C53 139
SLCO1
140
222K
SLCO1 TESM9
141
TEST2
C31 122K 142
RFCD
C34 122K 143
RFDVD
BC32 144
AVDD
104Z 145
RFCT
146
RFZI
147
TEZI
C51 148
AWIN
682K 149
AVSS
AWIN 150
FEI
151
TEI
152
RFSB
153
RFRP
154
AVSS
155
TESM10
AWCTL 156
EXTAD
157
VREF
R74 103 158
FOO
R75 303 159
TRO
BC31 160
AVDD
R101 473 104Z 161
AWCTL
R76 103 162
FMO
R77 103 163
DMO
R78 103 164
TEBC
R79 103 165
FEBC
R80 103 166
DPDC
R81 103 167
EQBC
R82 103 168
ANMON
169
/DFCT
R138 332 170
VRCK
R132 171
VSS3
102 172
SCD
173
SCL
174
SCB
175
FGIN
176
R137
NC
223
333
A+3.3V
R102
BC30
+
104Z
EC24
OPEN OPEN
6.3V100
C75 R120 R45
0R0
R121
OPEN
EC7
+
C28
C29 OPEN EC8
OPEN
OPEN OPEN
AUGND
P-HIGH CPU
P-LOW CPU
+1.65V
PESV
104Z
BC34
PLCK
IC6
TC9453F
BC24
104Z
FLADA
R5
+
105
R2
0R0
22.57MHz
X2
XC1
102K
220K
XC2 R64
C21 C19
220K 472
153K
— 65 —
D+3.3V D+5V
CC28
104Z
OPEN
BC44
BC36 EC28
104Z OPEN
BC43
6.3V47
88 BA8
BA8
87 BA7
BA7
86 BA6
BA6
85 BA5
BA5
84 BA4
BA4
83
VSS5
82 BA3
BA3
81 BA2
BA2
80 BA1
BA1
79 BC26 BA0
BA0
78
VDD3
77
TESM4
76 104Z
DIGI
75
TESM3
74 BC27
VDD5
73 104Z
PDCK
72
/PDRQ
71
/PSYC
70 PD8 PD8
PD8
69 PD7
PD7
68 PD6
PD6
67 PD5
PD5
66
VSS3
65 PD4
PD4
64 PD3
PD3
63 PD2
PD2
62 PD1
PD1
61
VSS5
60 PD0
PD0
59
VDD3
58
VMCK VMCK
57 BC25
SMCK
56 104Z
SMCK
NC
55
NC
BC28
54
VDD5
53 104Z MD7
MD7
52 MD6
MD6
51 MD5
MD5
50 MD4
MD4
49 MD3
MD3
48 MD2
MD2
47 MD1
MD1
46 MD0
MD0
45
/MINT
R83
103
FLADB
HCU-R700
DIGI
DIGI ATAPI
PDCK ATAPI
PDRQ
PDRQN ATAPI
PSYC
PSYCN ATAPI
PD BUS ATAPI
SMCK ATAPI
MD BUS ATAPI/CPU
DSPINT CPU
DSPCSN CPU
WRN ATAPI/CPU
RDN ATAPI/CPU
MA8 CPU
RSTN
CPU
— 66 —