Sharp CD-C470E (serv.man3) Service Manual ▷ View online
– 53 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
IC601 RH-iX0171AWZZ:System Microcomputer (IX0171AW) (2/2)
52
VDD
—
Positive power supply
53
CD O/C SW
Input
CD open-close switch input
54
DISC No. SW
Input
CD turntable position detection input
55
CD U/D SW
Input
CD mechanism UP/DOWN chucking detection input
56
T1 CrO SW
Input
Tape 1 CrO
2
detection SW input
57
SRS INH
Output
SRS (surround) position selection output
58
SRS B
Output
SRS (surround) position selection output
59
SRS A
Output
SRS (surround) position selection output
60
SRS 3D
Output
SRS (surround) position selection output
61
SRS PASS
Output
SRS (surround) position selection output
62
SPAN 9K/10K
Input
Tuner span selector 9 kHz/10 kHz selection input
63
DOLBY
Input
DOLBY detection input, not applied in this machine
64
SRS
Input
SRS detection input, not applied in this machine
65
BALANCE
Input
BALANCE detection input, not applied in this machine
66
4SP
Input
4SP detection input, not applied in this machine
67
TAPE A-FP SW
Input
Tape A side miserase preventing SW input
68
TAPE B-FP SW
Input
Tape B side miserase preventing SW input
69
TAPE PB MUT
Output
Tape playback mute output
70
TAPE T1/T2
Output
Tape 1/2 selection
71
VLOAD
—
To be connected to GND
72
TAPE BIAS
Output
Tape bias circuit selection
73*
————
—
Not used
74*
————
—
Not used
75
TAPE BEET CUT
Output
Beat cancel signal control output
76
TAPE HI SPEED
Output
Tape mechanism High-Low speed selection
77*
————
—
Not used
78*
————
—
Not used
79
TAPE PB EQ
Output
Tape circuit playback Eq selection
80
TAPE REC MUT
Output
Tape circuit record muting output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Terminal Name
Pin No.
Input/Output
Function
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 54 –
IC701 RH-iX0170AWZZ:System Microcomputer (IX0170AW) (1/2)
1-5
P94/FIP6-P90/FIP2
G06-G02
Output
FL display tube grid drive
6,7
P81/FIP1,P80/FIP0
G01,G00
Output
FL display tube grid drive
8
VDD
VDD
—
Positive power supply
9
P27/SCK0
C
2
B CLK
Output
C
2
B serial clock output
10
P26/S00/SB1
C
2
B DO
Output
C
2
B serial data output
11
P25/SI0/SB0
C
2
B DI
Input
C
2
B serial data input
12
P24/BUSY
C
2
B CE
Output
C
2
B serial CE output
13
P23/STB
SUB STB
Output
Serial strobe output for CD/TAPE microcomputer
14
P22/SCK1
SUB SCK
Output
Serial clock output for CD/TAPE microcomputer
15
P21/SO1
SUB SO
Output
Serial data output for CD/TAPE microcomputer
16
P20/SI1
SUB SI
Input
Serial strobe input for CD/TAPE microcomputer
17
RESET
RESET
Input
Reset input
18
P74
SUB RES
Output
Reset output for CD/TAPE microcomputer
19
P73
TUN MUTE
Output
Tuner TUN MUT output
20
AVSS
AVSS
—
Analog power supply for A/D converter
21
P17/ANI7
TUN SD
Input
Tuner station detection input
22
P16/ANI6
TUN SM
Input
Tuner signal meter input
23
P15/ANI5
KEY IN5
Input
Key input 37-45
24
P14/ANI4
KEY IN4
Input
Key input 28-36
25
P13/ANI3
KEY IN3
Input
Key input 19-27
26
P12/ANI2
KEY IN2
Input
Key input 10-18
27
P11/ANI1
KEY IN1
Input
Key input 1-9
28
P10/ANI0
ENF IN
Input
Tuner initial setting input
29
AVDD
AVDD
—
Analog positive power supply for A/D converter
30
AVREF
AVREF
—
Reference power supply for A/D converter
31
P04/XT1
VSS
Input
Sub-clock input To be connected to Vss
32*
XT2
N.C
—
Sub-clock output OPEN
33
VSS
VSS
—
GND power
34
X1
X1
Input
Main clock 4.194304 MHz
35
X2
X2
Output
Main clock 4.194304 MHz
36
P37
LED LCK
Output
LED IC serial clock output BU2092 LCK
37
P36/BUZ
LED DATA
Output
LED IC serial data output BU2092 DATA
38
P35/PCL
LED CLK
Output
LED IC serial clock output BU2092CLK
39*
P34/TI2
RDS ID
Input
RDS RDS station detection input
40*
P33/TI1
RDS SYNC
Input
RDS Data sync detection input
41*
P32/TO2
RDS SYR
Output
RDS RAM reset output LC72720 SYR
42
P31/TO1
SYS MUTE
Output
System mute output
43
P30/TO0
POWER
Output
POWER output
44*
P03/INTP3/CI0
Output
No use
45*
P02/INTP2
Output
No use
46
P01/INTP1
SYS STOP
Input
Power failure input
47
P00/INTP0/TI0
REM IN
Input
Remote Control Input
48
IC
VSS
—
Connect with GND
49*
P72
Output
No use
50*
P71
Output
No use
51*
P70
Output
No use
52
VDD
VDD
—
Positive power supply
53*
P127/FIP33
—
No use
54-60
P126/FIP32-P120/FIP26 S21-S15
Output
FL display tube segment drive
61-68
P117/FIP25-P110/FIP18 S14-S07
Output
FL display tube segment drive
69,70
P107/FIP17,P106/FIP16 S06,S05
Output
FL display tube segment drive
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
Port Name
– 55 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
IC701 RH-iX0170AWZZ:System Microcomputer (IX0170AW) (2/2)
71
VLOAD
VLOAD
—
Negative power supply for FL drive To be connected to -30V
72-76
P105/FIP15-P101/FIP11
S04-S00
Output
FL display tube segment drive
77
P100/FIP10
G10
Output
FL display tube grid drive
78-80
P97/FIP9-P95/FIP7
G09-G07
Output
FL display tube grid drive
Terminal Name
Pin No.
Input/Output
Function
Port Name
IC501 VHiLC75396E-1:Audio Processor (LC75396E)
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
LTIN
LF1C1
LF1C2
LF1C3
LF2C1
LF2C2
LF2C3
LF3C1
LF3C2
LF3C3
LF4C1
LF4C2
LF4C3
LF5
LTOUT
LFIN
RF1C1
RF1C2
RF1C3
RF2C1
RF2C2
RF2C3
RF3C1
RF3C2
RF3C3
RF4C1
RF4C2
RF4C3
RF5
RTOUT
RFIN
RFCOM
49
LSELO
50
LINVIN1
51
L5
52
L4
53
L3
54
L2
55
L1
56
VDD
57
R1
58
R2
59
R3
60
R4
61
R5
62
RINVIN1
63
RSERO
64
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
RTIN
LFCOM
LFOUT
LRIN
LRCOM
LROUT
LVref
VSS
CE
DI
CL
Vref
RVref
RROUT
RRCOM
RRIN
RFOUT
IC201 VHiLA2786//-1: Dolby Pro Logic Active Decorder (LA2786)
CONTROL
1
2
3
4
5
6
7
8
9
10
11
12 13 14
15 16
17
18
19
20
21
42 41 40
39
38
37 36
35
34
33
32
31 30 29
28
27
26
25
24
23
22
OSC
DEVIDER
NOISE
GENERAT
LPF
NOISE FILTER
B
B
A
A
B
B
A
A
B
B
A
A
NOISE
CH
BALANCE
CONTROL
DUAL 1
CONTROL
VR
CONTROL
VREF
VR
VR
VCA
VCA
VCA
VCA
VCA
VCA
VCA
VCA
CMOTE
CTRIM
MUTE
LPF
LPF
VCC
VCC
+
-
RECT
RECT
RECT
RECT
LOG DIFF
LOG DIFF
P.S.
P.S.
VCC
L-OUT
R-OUT
LT-IN
RT-IN
S-OUT
C-OUT
DATA
CLOCK
ENABLE
A
B
B
B
A
A
B
A
A
A
B
B
B
A
DC-OUT
S-TRIM
B-NR
7k/5k
VOL/MUTE
OUT-FILTER
L+DELAY
R+DELAY
INV-PHASE
L+R
L-R
(-6dB)
50k
50k
20k
DEC
VDD
40kHz
IN-FILTER
ADM-CONT
B
A
ADM
SRAM
24
23
22
21
20
19
18
17
16
15
14
13
1
2 3 4
5
6
7
8
9
10
11
12
AGND
VREF
L-MIX-OUT
R-MIX-OUT
S-OUT
VSS
CLK
DATA
B-NR
L-IN
R-IN
S-IN
DELAY-OUT
VCC
ENABLE
IC202 VHiLV1016//-1: Dolby Pro Passive Decorder (LV1016)
Figure 55 BLOCK DIAGRAM OF IC
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 56 –
IC501 VHiLC75396E-1:Audio Processor (LC75396E)
1-3
RF1C1-RF1C3
Terminal to connect capacitor of filter configuration for equalizer F1 band
Connect the capacitor between LF1C1(RF1C1) and LF1C2(RF1C2) between LF1C2 (RF1C2) and LF1C3(RF1C3).
Connect the capacitor between LF1C1(RF1C1) and LF1C2(RF1C2) between LF1C2 (RF1C2) and LF1C3(RF1C3).
4-6
RF2C1-RF2C3
Terminal to connect capacitor of filter configuration for equalizer F2 band
Connect the capacitor between LF2C1(RF2C1) and LF2C2(RF2C2) between LF2C2 (RF2C2) and LF2C3(RF2C3).
Connect the capacitor between LF2C1(RF2C1) and LF2C2(RF2C2) between LF2C2 (RF2C2) and LF2C3(RF2C3).
7-9
RF3C1-RF3C3
Terminal to connect capacitor of filter configuration for equalizer F3 band
Connect the capacitor between LF3C1(RF3C1) and LF3C2(RF3C2) between LF3C2 (RF3C2) and LF3C3(RF3C3).
Connect the capacitor between LF3C1(RF3C1) and LF3C2(RF3C2) between LF3C2 (RF3C2) and LF3C3(RF3C3).
10-12
RF4C1-RF4C3
Terminal to connect capacitor of filter configuration for equalizer F4 band
Connect the capacitor between LF4C1(RF4C1) and LF4C2(RF4C2) between LF4C2 (RF4C2) and LF4C3(RF4C3).
Connect the capacitor between LF4C1(RF4C1) and LF4C2(RF4C2) between LF4C2 (RF4C2) and LF4C3(RF4C3).
13
RF5
Terminal to connect capacitor of filter configuration for equalizer F5 band
Terminal to connect the externally provided capacitor
Terminal to connect the externally provided capacitor
14
RTOUT
Equalizer output terminal
15
RFIN
Input terminal of Rch front side 4dB step control
16
RFCOM
Common terminal of Rch front side 1dB step control
17
RFOUT
Output terminal of Rch front side control
18
RRIN
Input terminal of Rch rear side 4dB step control
19
RRCOM
Common terminal of Rch rear side 1dB step control
20
RROUT
Output terminal of Rch rear side control
21
RVREF
Internal analog ground terminal
22
VREF
Connect the capacitor of about several 10 uF between Vref and AVSS (VSS) so as to prevent power supply
ripple in the VDD/2 voltage generating section.
ripple in the VDD/2 voltage generating section.
23
CL
Terminal to input serial data and clock for control
24
DI
Terminal to input serial data and clock for control
25
CE
Chip enable terminal. Data is written in the internal latch with a timing of changing H to L, and the specific
analog switch is actuated. Data transfer is enabled on the H level.
analog switch is actuated. Data transfer is enabled on the H level.
26
VSS
GND
27
LVREF
Internal analog ground terminal
28
LROUT
Output terminal of Lch rear side control
29
LRCOM
Common terminal of Lch rear side 1dB step control
30
LRIN
Input terminal of Lch rear side 4dB step control
31
LFOUT
Output terminal of Lch front side control
32
LFCOM
Common terminal of Lch front side 1dB step control
33
LFIN
Input terminal of Lch front side 4dB step control
34
LTOUT
Equalizer output terminal
35
LF5
Terminal to connect capacitor of filter configuration for equalizer F5 band
Terminal to connect the externally provided capacitor
Terminal to connect the externally provided capacitor
36-38
LF4C3-LF4C1
Terminal to connect capacitor of filter configuration for equalizer F4 band
Connect the capacitor between LF4C1(RF4C1) and LF4C2(RF4C2) between LF4C2 (RF4C2) and LF4C3(RF4C3).
Connect the capacitor between LF4C1(RF4C1) and LF4C2(RF4C2) between LF4C2 (RF4C2) and LF4C3(RF4C3).
39-41
LF3C3-LF3C1
Terminal to connect capacitor of filter configuration for equalizer F3 band
Connect the capacitor between LF3C1(RF3C1) and LF3C2(RF3C2) between LF3C2 (RF3C2) and LF3C3(RF3C3).
Connect the capacitor between LF3C1(RF3C1) and LF3C2(RF3C2) between LF3C2 (RF3C2) and LF3C3(RF3C3).
42-44
LF2C3-LF2C1
Terminal to connect capacitor of filter configuration for equalizer F2 band
Connect the capacitor between LF2C1(RF2C1) and LF2C2(RF2C2) between LF2C2 (RF2C2) and LF2C3(RF2C3).
Connect the capacitor between LF2C1(RF2C1) and LF2C2(RF2C2) between LF2C2 (RF2C2) and LF2C3(RF2C3).
45-47
LF1C3-LF1C1
Terminal to connect capacitor of filter configuration for equalizer F1 band
Connect the capacitor between LF1C1(RF1C1) and LF1C2(RF1C2) between LF1C2 (RF1C2) and LF1C3(RF1C3).
Connect the capacitor between LF1C1(RF1C1) and LF1C2(RF1C2) between LF1C2 (RF1C2) and LF1C3(RF1C3).
48
LTIN
Equalizer input terminal
49
LSELO
Input selector output terminal
50
LINVIN1
Operational amplifier reverse input terminal for input gain setting
51-55
L5-L1
Input signal terminal
56
VDD
Power terminal
57-61
R1-R5
Input signal terminal
62
RINVIN1
Operational amplifier reverse input terminal for input gain setting
63
RSELO
Input selector output terminal
64
RTIN
Equalizer input terminal
Pin No.
Function
Terminal Name
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