DOWNLOAD Sharp CD-CH1000 (serv.man20) Service Manual ↓ Size: 77.97 KB | Pages: 7 in PDF or view online for FREE

Model
CD-CH1000 (serv.man20)
Pages
7
Size
77.97 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / IC function table
File
cd-ch1000-sm20.pdf
Date

Sharp CD-CH1000 (serv.man20) Service Manual ▷ View online

CD-CH1000H/CD-CH1000W
– 66 –
Function
Port Name
Input/Output
52
AVref0
Analog reference potential 0
53
P10/ANI0
Input
Key input 0 (AD port)
54
P11/ANI1
Input
Key input 1 (AD port)
55
P12/ANI2
Input
Key input 2 (AD port)
56
P13/ANI3
Input
Key input 3 (AD port)
57
P14/ANI4
Input
Key input 4 (AD port)
58
P15/ANI5
Input
Level meter input L-ch
59
P16/ANI6
Input
Tuner state input
60
P17/ANI7
Input
Level meter input R-ch
61
Avss
Analog GND
62
P130/ANO0
Input
Tape mecha select single/reverse
63
P131/ANO1
Output
Not used
64
AVref1
Input
Analog reference potential 1
65
P70/RxD2/SI2
Input
Not used
66
P71/TxD2/SO2
Output
Not used
67
P72/ASCK2/SCK2
Input
Not used
68
P20/RxD1/SI1
Input
Tuner data input
69
P21/TxD1/SO1
Output
Tuner data output
70
P22/ASCK1/SC
Output
Tuner clock output
71
P23/PCL
Output
Not used
72
P24/BUZ
Output
Not used
73
P25/SI0/SDA0
Input/Output
Control output read/write to LCD driver
74
P26/SO0
Output
Not used
75
P27/SCK0/SCL0
Output
Control output clock to LCD driver
76
P80/A0
Input
CAM A switch e
77
P81/A1
Input
CAM A switch d
78
P82/A2
Input
CAM A switch c
79
P83/A3
Input
CAM A switch b
80
P84/A4
Input
CAM A switch a
81
P85/A5
Input
TRAY identification switch a
82
P86/A6
Input
TRAY identification switch b
83
P87/A7
Input
TRAY identification switch c
84
P40/AD0
Input
CAM C switch b
85
P41/AD1
Input
CAM C switch a
86
P42/AD2
Output
CD LSI chip enable
87
P43/AD3
Output
CD LSI clock
88
P44/AD4
Input/Output
CD LSI data input/output
89
P45/AD5
Input/Output
CD LSI data input/output
90
P46/AD6
Input/Output
CD LSI data input/output
91
P47/AD7
Input/Output
CD LSI data input/output
92
P50/A8
Output
CD LSI reset
93
P51/A9
Output
CD LSI RW switching
94
P52/A10
Input
CD pickup inner switch input
95
P53/A11
Output
Tray motor forward rotation
96
P54/A12
Output
Tray motor reverse rotation
97
P55/A13
Output
CAM motor forward rotation
98
P56/A14
Output
CAM motor reverse rotation
99
P57/A15
Output
TAPE REC mute
100
Vss
Input
Ground potertial connected to VSS
Pin No.
IC901  RH-iX0385AWZZ: System Microcomputer (IX0385AW) (2/2)
– 67 –
CD-CH1000H/CD-CH1000W
Function
Port Name
Input/Output
1
VSS
Input
GND
2
DATA
Input
Serial data input
3
CLOCK
Input
Serial clock input
4
LCK
Input
Latch clock input
5
Q0
Output
Panel LED
6
Q1
Ourput
> I I LED
7
Q2
Output
<< LED
8
Q3
Output
>> LED
9
Q4
Output
Stop LED
10
Q5
Output
Not used
11
Q6
Output
CD 6 LED
12
Q7
Output
CD 5 LED
13
Q8
Output
CD 4 LED
14
Q9
Output
CD 3 LED
15
Q10
Output
CD 2 LED
16
Q11
Output
CD 1 LED
17
OE
Output
Output enable
18
VDD
Input
Power supply
Pin No.
IC702  VHiBU2092F/-1: Output Expander (BU2092F)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Function
Port Name
Input/Output
1
VSS
Input
GND
2
DATA
Input
Serial data input
3
CLK
Input
Serial clock input
4
LCK
Input
Latch clock input
5
Q0
Output
For CD power control
6*
Q1
Output
Not used
7*
Q2
Output
Not used
8*
Q3
Output
Not used
9
Q4
Output
Not used
10*
Q5
Output
Not used
11*
Q6
Output
Panel control switch
12
Q7
Output
Panel control output close
13
Q8
Output
Panel control output open
14
Q9
Output
Fan motor ON/OFF
15
Q10
Output
Not used
16
Q11
Output
Not used
17
OE
Output
Output enable
18
VDD
Input
Power supply
Pin No.
IC912  VHiBU2092F/-1: Output Expander (BU2092F)
CD-CH1000H/CD-CH1000W
– 68 –
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
(*): Normaly the output pin. Used as an I/O pin in test mode, which is not available to user applications.
Function
Port Name
Input/Output
Pin No.
ICT21  VHiLC72722/-1: RDS Decorder (LC72722) (For CD-CH1000H Only)
1
VREF
Output
Reference voltage output (Vdda/2)
2
MPXIN
Input
Baseband (multiplexed) signal input
3
Vdda
Analog power supply (+5V)
4
Vssa
Analog ground
5
FLOUT
Output
Subcarrier output (fulter output)
6
CIN
Input
Subcarrier input (comparator input)
7
T1
Input
Test input (This pin must always be connected to ground.)
8
T2
Input
Test input (standby control)
0: Normal operation
1: standby state (crystal oscillator stopped)
9*
T3 (RDCL)
Input/Output (*)
Test I/O (RDS clock output)
10*
T4 (RDDA)
Input/Output (*)
Test I/O (RDS data output)
11*
T5 (RSFT)
Input/Output (*)
Test I/O (soft-decision control data output)
12
XOUT
Output
Crystal oscillator output (4.332/8.664 MHz)
13
XIN
Input
Crystal oscillator input (external reference signal input)
14
Vddd
Digital power supply (+5V)
15
Vssd
Digital ground
16*
T6
Input/Output (*)
Test I/O (error status, regenerated carrier, TP, error block count outputs)
(ERROR/57K/TP/BE1)
17*
T7
Input/Output (*)
Test I/O (error correction status, SK detection, TA, error block count outputs)
(CORREC/ARI-ID/TA/BE0)
18*
SYNC
Input/Output (*)
Block synchronization detection output
19*
RDS-ID
Output
RDS detection output
20
DO
Output
Data output
21
CL
Input
Clock input
22
DI
Input
Data input
    Serial data interface (CCB)
23
CE
Input
Chip enable
24
SYR
Input
Synchronization and RAM address reset (active high)
VREF
FLOUT
CIN
Vddd
Vssd
RDS-ID
SYNC
SYR
XOUT
XIN
DO
CL
DI
CE
T1
T2
T3 to T7
MPXIN
Vssa
Vdda
REFERENCE
VOLTAGE
ANTIALIASING
FILTER
57kHz
BPF
(SCF)
VREF
SMOOTHING
FILTER
+
_
PLL
(57kHz)
CLOCK
RECOVERY
(1187.5Hz)
DATA
DECODER
SYNC/EC CONTROLLER
SYNC
DETECT-2
SYNC
DETECT-1
ERROR CORRECTION
(SOFT DECISION)
CLK(4.332MHz)
OSC/DIVIDER
RAM
(24 BLOCK DATA)
MEMORY CONTROL
CCB
TEST
3
1
5
6
4
2
20
21
22
23
13
12
24
18
19
15
14
7
8
9~11,
16,17
Figure 68 BLOCK DIAGRAM OF IC
CD-CH1000H/CD-CH1000W
– 68 –
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
(*): Normaly the output pin. Used as an I/O pin in test mode, which is not available to user applications.
Function
Port Name
Input/Output
Pin No.
ICT21  VHiLC72722/-1: RDS Decorder (LC72722) (For CD-CH1000H Only)
1
VREF
Output
Reference voltage output (Vdda/2)
2
MPXIN
Input
Baseband (multiplexed) signal input
3
Vdda
Analog power supply (+5V)
4
Vssa
Analog ground
5
FLOUT
Output
Subcarrier output (fulter output)
6
CIN
Input
Subcarrier input (comparator input)
7
T1
Input
Test input (This pin must always be connected to ground.)
8
T2
Input
Test input (standby control)
0: Normal operation
1: standby state (crystal oscillator stopped)
9*
T3 (RDCL)
Input/Output (*)
Test I/O (RDS clock output)
10*
T4 (RDDA)
Input/Output (*)
Test I/O (RDS data output)
11*
T5 (RSFT)
Input/Output (*)
Test I/O (soft-decision control data output)
12
XOUT
Output
Crystal oscillator output (4.332/8.664 MHz)
13
XIN
Input
Crystal oscillator input (external reference signal input)
14
Vddd
Digital power supply (+5V)
15
Vssd
Digital ground
16*
T6
Input/Output (*)
Test I/O (error status, regenerated carrier, TP, error block count outputs)
(ERROR/57K/TP/BE1)
17*
T7
Input/Output (*)
Test I/O (error correction status, SK detection, TA, error block count outputs)
(CORREC/ARI-ID/TA/BE0)
18*
SYNC
Input/Output (*)
Block synchronization detection output
19*
RDS-ID
Output
RDS detection output
20
DO
Output
Data output
21
CL
Input
Clock input
22
DI
Input
Data input
    Serial data interface (CCB)
23
CE
Input
Chip enable
24
SYR
Input
Synchronization and RAM address reset (active high)
VREF
FLOUT
CIN
Vddd
Vssd
RDS-ID
SYNC
SYR
XOUT
XIN
DO
CL
DI
CE
T1
T2
T3 to T7
MPXIN
Vssa
Vdda
REFERENCE
VOLTAGE
ANTIALIASING
FILTER
57kHz
BPF
(SCF)
VREF
SMOOTHING
FILTER
+
_
PLL
(57kHz)
CLOCK
RECOVERY
(1187.5Hz)
DATA
DECODER
SYNC/EC CONTROLLER
SYNC
DETECT-2
SYNC
DETECT-1
ERROR CORRECTION
(SOFT DECISION)
CLK(4.332MHz)
OSC/DIVIDER
RAM
(24 BLOCK DATA)
MEMORY CONTROL
CCB
TEST
3
1
5
6
4
2
20
21
22
23
13
12
24
18
19
15
14
7
8
9~11,
16,17
Figure 68 BLOCK DIAGRAM OF IC
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