Sharp Z-21, Руководство по обслуживанию

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2. NAIN PWB CPU (IC203) SIGNAL NAME
PIN No. Port Signal name IN/OUT Active level Specifications
1 P50/TXD SDA (EEPROM) OUT/IN — EEPROM data signal line
2 P51/RXD NC OUT —
3 P52/SCK SCL (EEPROM) OUT — EEPROM clock signal line
4 /RES RESET IN L Reset state at LOW (OV).
5 /NMI /NM1 /IN L Driven LOW when the CPU is hung up,and interruption occurs.
6 VCC VD IN — Power (5V)
7 /STBY VD IN H Hardware standby mode signal (not used).
8 VSS GND IN — Power (GND)
9 XTAL XTAL IN — Clock (10MHz)
10 EXTAL XTAL IN — Clock (10MHz)
11 MD1 VD IN H Operation mode, control signal
12 MD0 VD IN H Operation mode, control signal
13 AVSS GND IN — Power (GND)
14 P70/AN0 HLTH IN — Analog signal (thermistor)
15 P71/AN1 AESP IN — Analog signal (AE sensor)
16 P72/AN2 VRV IN — Analog signal (Volume voltage simulation)
17 P73/AN3 GND IN — Analog signal (not used)
18 P74/AN4 GND IN — Analog signal (not used)
19 P75/AN5 GND IN — Analog signal (not used)
20 P76/AN6 GND IN — Analog signal (not used)
21 P77/AN7 GND IN — Analog signal (not used)
22 AVCC VD IN — A/D convertor power pin (5V)
23 P60/FTCI/TMCIO HL OUT H Heater lamp control signal
24 P61/FT0A CSEG 0 OUT H Display (common 0) control signal
25 P62/FTIA MREP IN Falling edge Motor encoder signal
26 P63/FTIB/TMRIO CSEG 1 OUT H Display (common 1) control signal
27 P64/FTIC/TM00 MMCLK OUT H Motor control signal (PWM)
28 P65/FTID/WDCLK WDCLK OUT — Watch dog timer pulse signal
29 P66/FTOB/TMRI1 NC OUT —
30 P67/TM01 CLCLK OUT H Copy lamp control signal (PWM)
31 VCC VD IN — Power (5V)
32 P27/A15 RRS B OUT H Paper start solenoid control signal
33 P26/A14 RRS A OUT H Paper start solenoid control signal
34 P25/A13 PR OUT H Power relay control signal
35 P24/A12 THS OUT H Toner supply solenoid control signal
36 P23/A11 PFS OUT H Paper feed solenoid control signal
37 P22/A10 /MHV OUT L High voltage control signal
38 P21/A9 GBC OUT H Grid control signal
39 P20/A8 DVB OUT H Developing bias control signal
40 VSS GND IN — Power (GND)
41 P17/A7 NC OUT —
42 P16/A6 DSEG6 (DISPLAY) OUT H Display (segnent 6) control signal
43 P15/A5 DSEG5 (DISPLAY) OUT H Display (segnent 5) control signal
44 P14/A4 DSEG4 (DISPLAY) OUT H Display (segnent 4) control signal
45 P13/A3 DSEG3 (DISPLAY) OUT H Display (segnent 3) control signal
46 P12/A2 DSEG2 (DISPLAY) OUT H Display (segnent 2) control signal
47 P11/A1 DSEG1 (DISPLAY) OUT H Display (segnent 1) control signal
48 P10/A0 DSEG0 (DISPLAY) OUT H Display (segnent 0) control signal
49 P30/D0 PID (PAPER IN) IN L Paper entry detection (L: paper presence)
50 P31/D1 POD (PAPER OUT) IN L Paper exit detection (L: paper presence)
51 P32/D2 TCSP (TONER CONTROL) IN L Toner density detection (L: under toner)
52 P33/D3 TCSP (TABLE POSITION) IN — Tadle position detection (H: feed side)
53 P34/D4 KI (KEY INPUT) IN H Key input signal
54 P35/D5 SMIP0 IN — Machine mode select signal (input)
55 P36/D6 SMIP1 IN — Machine mode select signal (input)
56 P37/D7 SMIP2 IN — Machine mode select signal (input)
57 P40//ADTRG//IRQ2 FW IN — Zero cross signal
58 P41//IRQ1 FW IN — Zero cross signal
59 P42//TRQ0 MREP IN — Motor encoder signal
60 P43//RD SMOP0 OUT — Machine mode strobe signal (Output)
61 P44//WR SMOP1 OUT — Machine mode strobe signal (Output)
62 P45//AS SMOP2 OUT — Machine mode strobe signal (Output)
63 P46/@ MSIM IN — Machine emulation signal (Input)
64 P47//WAIT NC OUT —
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