Sharp CD-C440W Service Manual page 47

IC601 RH-iX0171AWZZ:System Microcomputer (IX0171AW) (2/2)
Pin No. Terminal Name
52 VDD
53 CD O/C SW
54 DISC No. SW
55 CD U/D SW
56 * T1 CrO SW
57 SRS INH
58 SRS B
59 SRS A
60 SRS 3D
61 SRS PASS
62 SPAN 9K/10K
63 DOLBY
64 SRS
65 BALANCE
66 4SP
67 TAPE A-FP SW
68 TAPE B-FP SW
69 TAPE PB MUT
70 TAPE T1/T2
71 VLOAD
72 TAPE BIAS
73* ————
74* ————
75 * TAPE BEET CUT
76 TAPE HI SPEED
77* ————
78* ————
79* TAPE PB EQ
80 TAPE REC MUT
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
REC MUT
PB EQ
Hi SPEED
BEET CUT
BiAS
T1/T2
PB MUT
T2 BFP
T2 AFP
4SP
BALANCE
Input/Output
— Positive power supply
Input CD open-close switch input
Input CD turntable position detection input
Input CD mechanism UP/DOWN chucking detection input
Input Tape 1 CrO
Output SRS (surround) position selection output
Output SRS (surround) position selection output
Output SRS (surround) position selection output
Output SRS (surround) position selection output
Output SRS (surround) position selection output
Input Tuner span selector 9 kHz/10 kHz selection input
Input DOLBY detection input, not applied in this machine
Input SRS detection input, not applied in this machine
Input BALANCE detection input, not applied in this machine
Input 4SP detection input, not applied in this machine
Input Tape A side miserase preventing SW input
Input Tape B side miserase preventing SW input
Output Tape playback mute output
Output Tape 1/2 selection
— To be connected to GND
Output Tape bias circuit selection
— Not used
— Not used
Output Beat cancel signal control output
Output Tape mechanism High-Low speed selection
— Not used
— Not used
Output Tape circuit playback Eq selection
Output Tape circuit record muting output
P95
P96
P97
P100
P101
P102
CD/TAPE CONTROL
P103
P104
µPD 78045A
P105
V Load
P106
P107
P110
P111
P112
P113
Figure 47 BLOCK DIAGRAM OF IC
Function
detection SW input
2
– 47 –
CD-C440W/CP-C440W
SPE 4
ANi 3
SPE 3
ANi 2
SPE 2
ANi 1
SPE 1
ANi 0
AVdd
AVref
TACUM SW
P04
Vss
X1
X2
LINE MUT
P37
SUR MUT
P36
CEN MUT
P35
SYS MUT
P34
P33 MIC