2) Pen exchange method

To remove pen, press the pen exchange button, when the slider is at the right handside, push the pen release lever.

Motor

Push the pen release lever

To install the pen, push the tip of the pen through the ring of the return spring in the nrst place, then push into the holder. Upon completion, ensure that the tip of the pen is engaged with the hole of the pen return spring. If colour change is done when the pen is disengaged from the hole, it may cause improper rotation of the rotary holder as the slider makes contact with the pen. Do not try to rotate the rotary holder by hand when installing the pen during replacement of the pens.

The X-axis stepping motor and the Y-axis stepping motor are driven by the two-phase magnet.

Stepping motor driving signal

Basic drive pulse

 

 

n

 

n

 

 

n

 

 

 

 

 

 

 

 

 

 

Phase A

 

 

t ---

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Phase B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Phase C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Phase 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor clock

 

 

 

Hold period

 

 

 

 

 

 

 

 

 

 

 

 

~

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tMH

 

 

 

 

 

 

 

 

 

 

 

 

 

It is more effective to save power to shut off current while the X and Y axis motors are at a halt. But, there may be a possible malfuction because of unsuppressed vibration, if the current is turned off with a normal pulse width. In order to prevent this, current is applied excessively for more than the given hold time (tMH = 1ms or more).

Colour position detector

The colour position detector consists of a reed switch and a permanent magnet and it may cause malfunction owing to external vibration, and magnetic influence. Especially, when deposit of alien matter or paper frag- ments is between the left end of the carriage and the frame this may result in a failure of the colour detect performance.

Character set

Input of an undefmed code up to $20 is ignored. Other undefmed codes are represented in hexadecimal notation using the pen in a next color pOsition.

Pin configuration (top view)

TO

 

Vcc

XTAL1

 

T1

XTAL2

 

P27

RESET

 

P26

SS

 

P25

INT

 

P24

EA

 

P17

RD

 

P16

PSEN

 

P15

WR

 

P14

ALE

 

P13

DBo

 

P12

DBI

 

P11

DB2

 

P10

DB,

 

VDD

DB4

 

PROG

DBs

 

P23

DB,

 

P22

DB,

 

P21

Vss

 

P20

 

 

 

Pin Configuration

21

Page 22
Image 22
Sharp MZ-700 manual XTAL1 XTAL2, Int, Psen, Ale, Dbi, DB2, DB4