Hitachi HCUR700UC Service Manual page 50

HCU-R700
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 ( 5 )
EC18
6.3V22
CN5
1
GND
2
VS(VCC)
3
VCC
4
E
5
F
6
D
7
A
8
B
9
C
10
VRF
11
GND(NC)
12
PD
13
GND
14
VR
R152
15
LD(CD) 820
16
LD(DVD)
17
GND
18
VR R151
19
VCC 101
20
PD(MONI)
21
FO+
22
FO-
23
TR+
24
TR-
24FLZ-SM1-TB
TR-
DSP TR-
TR+
DSP TR+
FO-
DSP FO-
FO+
DSP FO+
— 70 —
R113
A+3.3V
473
A+5V
LD2
EC13
6.3V22
BC59 CC13
+
LD1
103K
OPEN
R122
CC18
102
OPEN
Q2
2SB1260Q
BC60
103K
FBM2125HM330-B
L9
T30
T31
BC62
T32
103K T33
T34
T35
BC61
T36
103K
T37
L8
FBM2125HM330-B
EC14
6.3V22
LD4
BC70
C58 103K
+ CC14
103K
LD3
OPEN
R123
102
Q3
2SB1260Q
M+5V +12V +1.65V
EC29 BC67 BC66
+
102K
OPEN 224Z 271K
C65
CC29
OPEN
1R0 R155
1R0 R157
1R0 R156
BC65
+
EC34 102K C30
16V100 471K
C18
BC58
104Z
R114
OPEN
473
L3
FBM2125HM330-B
103K
C55
C33 472K
C32 472K
61
DFTN
P1TN
62
P1TP
63
P1FN
64
P1FP
65
LDP1
66
GNDR
67
FEO
P1DI
68
TEO
P1CI
69
P1BI
IC12
70
LVL
P1AI
TA1293F
71
LDP2
72
P2AI
73
P2BI
74
P2CI VccS
75
RFSW
P2DI
76
GNDS
77
P2FP
78
P2FN
79
P2TP
80
VccP
P2TN
EC1
6.3V22
+ +
C15
104Z
104Z 104Z
BC52 102K
104Z
DMO
C59
103K
C25
C26
102K 102K
C27
102K
IC13
TA8493AF
FG
— 71 —
40
39
NC C57
38
OPEN
NC
37
C56
NC
36
NC 331K
35
NC
34
R96 471
33
R97 103
32
R46 102
NC 103
31
R98
30
NC
29
C62
NC
28 104Z 331K
NC
BC53
27
R149
26
C64 104
25
OPEN R115
NC
24
473
NC
23
NC
22
NC
BC54
21
BC64
104Z
103K
IC11
NJM4558
103
R50
A+3.3V
+1.65V
BC63 + EC19 R49
+
103K 6.3V22 103
CC19
OPEN
R154
R153 151 151
R99
103
DSP FM-
DSP FM+
CPU
INSWN
BRKN
CPU
FG
CPU/DSP
STBN
CPU/DSP
EQF
EQB
DSP
EQF
FEB
DSP
EQB
TEB
DSP
FEB
DPDB
DSP
TEB
RFI
DSP
DPDB
DSP
RFI
RFCT
DSP
RFCT
+1.65V
DFCT
DSP
DFCTN
C42
OPEN
FEI
TEI DSP
FEI
DSP
TEZI TEI
RFSB DSP
TEZI
DSP
RFSB
R182 0R0
RFZI
DSP
RFZI
100K
+1.65V
C61
R178
R150
OPEN
104
RFRP DSP
C10
OPEN
A+5V
BC57
104Z
VRCK
C60
VRCK DSP
100K
DSP
SCD
DSP
SCL
SCB DSP
DMO DSP
CN6
A3 15
A3
14
A2
13
A1
12
H1+
11
H1-
10
H2+
9
H2-
8
H3+
7
H3-
6
H-
5
H+
4
LM SW-
3
LM SW+
2
FM-
1
FM+
52643-1510
— 72 —