Read Sharp CD-BA250 (serv.man9) Service Manual online
CD-BA250H/CD-BA2600H
– 48 –
1
VDD
VDD
Input
(+) POWER SUPPLY.
2
P37
-20 dB ATT
Output
-20 dB ATTENUATOR.
3
P36
NO USE
Output
GND
4
P35
T_BIAS
Output
TAPE RECORD BIAS.
5
P34
T_T1/T2
Output
TAPE T1/T2 CHANGE.
6
P33
REC/PLAY
Output
TAPE REC/PLAY CHANGE.
7
P32
RES OUT
Output
CD DSP RESET&MPEG MICROCOMPUTER RESET.
8
P31
DRF
Input
CD RF LEVEL DETECTION.
9
P30
WRQ
Input
CD DSP WRITE REQUEST.
10
RESET
RESET
Input
RESET
11
X2
X2
Output
MAIN CLOCK.
12
X1
X1
Input
MAIN CLOCK.
13
VPP/IC
VPP/IC
—
GND
14*
XT2
XT2
—
OPEN
15*
P04
SPAN
Input
TUNER SPAN CHANGE.
16
VDD
VDD
Input
(+) POWER SUPPLY.
17
P27
CD CLK
Output
CD DSP CLOCK.
18
P26
CD DI
Output
CD DSP COMMAND.
19
P25
CD DO
Input
CD DSP CODE Q OUT.
20
P24
CD CE
Output
CD DSP CE OUTPUT.
21
P23
CE
Output
CE OUTPUT.
22
P22
CLK
Output
CLOCK OUTPUT.
23
P21
DI
Output
DATA OUTPUT.
24
P20
DO
Input
DATA INPUT.
25
AVSS
AVSS
—
ANALOG GROUND.
26
ANI7
O/C SW
Input
CD OPEN/CLOSE SWITCH.
DISC NO SW
Input
CD DISC NUMBER SWITCH.
27
ANI6
TUNER SM
Input
TUNER SIGNAL METER INPUT.
28
ANI5
SPEANA2
Input
SPEANA DATA INPUT 16 kHz.
29
ANI4
SPEANA1
Input
SPEANA DATA INPUT 1 kHz.
30
ANI3
SPEANA0
Input
SPEANA DATA INPUT 63 kHz.
31-33
ANI2-ANI0
KEY 2-KEY 0
Input
KEY INPUT.
34
AVDD
AVDD
Input
ANALOG VDD.
35
AVREF
AVREF
Input
ANALOG REF VOLTAGE.
36
INTP3
P_IN
Input
POWER FAILURE DETECT.
37
P02
JOG 1
—
GND
38
P01
JOG 0
—
GND
39
INTP0
REMOCON
Input
REMOCON INPUT.
40
VSS
VSS
—
GROUND VOLTAGE.
41
P74
SMUTE
Output
SYSTEM MUTE CONTROL.
42
P73
T_SOL B
Output
TAPE 2 SOLENOID CONTROL.
43
P72
T_SOL A
Output
TAPE 1 SOLENOID CONTROL.
44
P71
T_MOTOR
Output
TAPE MOTOR CONTROL.
45
P70
TIMER LED
Output
TIMER LED CONTROL.
46
VDD
VDD
Input
(+) POWER SUPPLY.
47
P127
AC RLY_CONT
Output
AC RELAY CONTROL.
48
P126
SP_RLY
Output
SPEAKER OUTPUT RELAY CONTROL.
49
P125
SPK_DET
Input
SPEAKER OUTPUT DETECTION.
50
P124
T 1 RUN
Input
TAPE 1 RUN PULSE INPUT.
51
P123
T 2 RUN
Input
TAPE 2 RUN PULSE INPUT.
52
P122
CD CLAMP SW
Input
CD CHANGER CLAMP SWITCH.
IC701 RH-iX0401AWZZ: System Microcomputer (IX0401AW) (1/2)
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
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