Sharp MZ-80P4 Instruction Manual page 42

Dot printer

~,:------------------------------------------------------------------------------------

...

+5V

- 30

GND

PRIME

FAULT

IRT

35,36

'(Note) Conditions for SELECT

• PULL UP at 3300

• Provide.d for twist pair cable.

• Printer reset signal (Negative logic)

(Note) IRT for terminal No.34 is also a printer reset

signal, but has an opposite logic. When one reset

signal is employed, the other signal shall be made

NC. Otherwise, trouble may be caused.

• Signal to indicate that the printer is in FAULT

state. (Negative logic)

• Conditions for FAULT

DESELECT

• Printer reset signal.

• Refer to terminal No.31 PRIME.

(a) When the ON-LlNE/OFF-LlNE switch is pressed during DESELECT.

(b) When DC I code is received.

PE and read I-line data. After printing, OFF-LINE mode will be resumed. (Override function)

Conditions for DESELECT

• When the ON/OFF LINE switch is pressed during SELECT.

• When "DC3" code is received.

• When PE occurs.

• When power is turned ON.

(This state can be altered by the operation of the internal function switch.)

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