Read Sharp CD-C421H (serv.man10) Service Manual online
– 47 –
CD-C421H / C411H
Figure 47 BLOCK DIAGRAM OF IC
IC601 RH-iX0225AWZZ:Main System Microcomputer (IX0225AW) (1/2)
63*
P115
Output
Not used OUT:H OPEN
64
P114
SRS_P
Input
SRS exsists or not exist
65*-66*
P113-112
Output
Not used OUT:H OPEN
67
P111
FPA
Input
TAPE2 A Side Proof Roof
68*
P110
Output
Not used OUT:H OPEN
69*
P107
TAMUTE
Output
TAPE Playback Mute
70
P106
T_T1T2
Output
T1/T2 Selection
71
VSS
VSS
–
GND Potential
72
P105
T_BIAS
Output
Recording Bias Control
73*
P104
SRS ON OFF
Output
SRS ON/OFF Control
74*
P103
SRS 1/2
Output
SRS Mode Control
75*
P102
BEAT CUT
Input
TAPE Beat Cut Control
76*-77*
P101-100
Output
Not used OUT:H OPEN
78*
P97
Input
Not used OUT:H OPEN
79*
P96
CRO2
Output
TAPE Playback EQ Selection
80
P95
RECMUTE
Output
Tape Recording Mute
Port Name
Terminal Name
Pin No.
Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Function
IC601
IX0225AW
(
µ
PD78043)
MAIN_ST
AVSS
MAIN SI
MAIN SO
MAIN SCK
RESET
T_RECPLY
REC MUTE
CRO2
FRF
PUIN SW
SLM1 +
SLM2 –
CD MUTE
CD DSPRES
CD SQIN
CD COOUT
CD CQCK
VDD
RWC
WRQ
AVDD
AVREF
CAM SW
VSS
X1
X2
LMUTE
SMUTE
T2 RUN
T1 FAS
T_MOTOR
T_SOL
IC
VDD
T1CRO2
SPN_P
SRS_P
STANBY
SPRLY
T2CRO2
SP_DET
VSS
P33
ANI2
ANI0
AVDD
AVREF
P04
P74
P73
AVSS
RESET
SO0
SI0
P24
P23
P126
X1
P124
P125
P17
P16
ANI5
ANI4
P101
P103
P102
P100
P31
P30
P03
P113
P112
P110
P106
P116
P117
P114
P115
P105
P104
P02
P71
P70
SO1
SI1
P00
P01
P122
P123
P91
P92
P93
P94
SCK1
VDD
P72
IC
XT2
VSS
X2
P37
P36
P35
P34
P32
VSS
ANI1
P90
VDD
SCK0
P80
P81
P120
P121
P107
P111
T_T1T2
T_BIAS
SRS ON OFF
SRS 1/2
BEAT CUT
ANI3
P127
P97
P96
P95
FPA
TAMUTE
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
80
79
78
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
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