UP-5300 (serv.man5). UP5300 Service Manual - Sharp EPOS Service Manual (repair manual). Page 4

COM4 or COM6: Modular jack RJ45 8 pin

Pin No.

Signal

Function

I/O

1

RS

Request to Send

O

2

ER

Data terminal Ready

I

3

SD

Send Data

O

4

SG

Signal Ground

—

5

SG

Signal Ground

–

6

RD

Receive Data

I

7

DR

Data set Ready

I

8

CS

Clear to Send

I

ITEM

SPECIFICATIONS

NOTE

Type

ISA bus

Half size PC board

Number of slots

2 slots

Power consumption

+5V/max. 1.0A

+12V/max. 0.05A

The shutdown switch is used when the OS or application programs
are straying and the system can not return to the normal state.

You must not use this shutdown switch when the UP-5300 is running
normally. Use this switch only when the main power source is not cut
off even if the main unit power switch is set to OFF position. UP-5300
is turned OFF and the hardware is reset by turning the main power
switch OFF and then pressing the shutdown switch.

The shutdown switch is single shot type. (Normally OFF position)

Push ON:

This position is used to reset stand-by mode for power
supply unit when software hang up.

Release OFF: Usually the shutdown switch needs to be set to this

position when the UP-5300 is operated.

The shutdown switch is a push switch. If it is pushed to ON, the
UP-5300 stops supplying the power when the power switch is set into
stand-by mode.

NOTE: The shutdown operation will be ignored when te power

switch is set into power-on position.

The system switches are used to preset various system configura-
tions.

The system switches consists of DIP switches.

The PSC2 simply reads the switched signals from the DIP switch as
hardware. The meaning of the switch settings are shown on the next
page.

 

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