Read Sharp SM-SX1 (serv.man2) Service Manual online
SM-SX1H
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1
LED3, P83
DATA_IN
Input
External IC communication input
2
LED2, P82
DATA_OUT
Output
External IC communication output
3
LED1, P81
IC_CLK
Input
External IC communication clock
4
LED0, P80
—
Input
Not used
5
AN0, PA0
KEY
Input
Key input. A/D input. VER.1
6
AN1, PA1
VOL DIS
Input
A/D input to display VOL value
7
AN2, PA2
KEYA
Input
Key input. A/D input. VER.2
8
AN3, PA3
KEYB
Input
Key input. A/D input. VER.2
9
AN4, PA4
KEYC
Input
Key input. A/D input. VER.2
10-12
AN5, PA5-AN7, PA7
—
Input
Not used
13
VDD
VDD
—
Power supply
14
OSC2
OSC2
Output
Oscillator
15
OSC1
OSC1
Input
Oscillator
16
VSS
VSS
—
Power supply
17*
NC
—
—
Not used
18
TXD, SBD0, P00
SDATA
Output
Output to serial/parallel converter for LED display. Data output
19
RXD, SBI0, P01
SLATCH
Output
Output to serial/parallel converter for LED display. Latch output
20
SBT0, P02
SCLK
Output
Output to serial/parallel converter for LED display. Clock output
21
BUZZER, P06
IC_RESET
Output
Reset output to external IC
22*
RMOUT, P10
AMUTE
Output
Output for AUDIO MUTE
23*
P11
CL_CONT
Output
Clock control between external IC and IC
24
P12, TMIO2
DCLK
Output
Setting output to D/A. Clock output
25
P13, TMIO3
DLATCH
Output
Setting output to D/A. Latch output
26
P14, TMIO4
DDATA
Input/Output Setting output to D/A. Data input/output
27
P20, IRQ0
PROTECT
Input
PROTECT signal detection input
28
P21, IRQ1, SENS
P-IN
Input
Warning input
29
P22, IRQ2
IC_STB
Input
External IC communication strobe
30
P60
DIG_B
Output
Digital input switch B
Switch of digital input is controlled with DIG_A and B.
Switch of digital input is controlled with DIG_A and B.
31
P61
DIG_A
Output
Digital input switch A
32
P62
MUTE
Output
Output for digital mute
33
P63
AUX3
Output
Input relay of AUX3 is switched.
34
P64
AUX2
Output
Input relay of AUX2 is switched.
35
P65
AUX1
Output
Input relay of AUX1 is switched.
36
P66
AMP DIG
Output
Input (digital, analog) to AMP is switched.
37*
P67
AMP ANA
Output
Input (digital, analog) to AMP is switched.
38
P70
DIG_C
Output
Digital input switch C
Switch of digital input accompanied to AUX1 is controlled.
Switch of digital input accompanied to AUX1 is controlled.
39
P27, NRST
RESET
Input
Reset
40
MMOD
TEST
—
TEST
41
P87, LED7
SP_RLY
Output
ON/OFF of speaker relay
42
P86, LED6
POWER
Output
Control terminal of power supply
43
P85, LED5
MUTE
Output
Line mute for recording
44
P84, LED4
YOBI OUT
Output
Warning output
IC907 RH-iX2845AFZZ: System Microcomputer (IX2845AF)
Port Name
Terminal Name
Pin No.
Input/Output
Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
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