Sharp ER-A420- User Manual

Sharp ER-A420

Sharp ER-A420– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – CAUTIONS
  • Page 3 – CHAPTER 1. SPECIFICATIONS; Front view
  • Page 5 – MA
  • Page 6 – Operator display
  • Page 7 – oc
  • Page 8 – SPECIAL SERVICE TOOLS; CHAPTER 3. MASTER RESET AND PROGRAM RESET
  • Page 9 – CHAPTER 4. HARDWARE DESCRIPTION
  • Page 11 – POWER SUPPLY/CONTROL PINS
  • Page 15 – FLASH MEMORY REWRITE PROCEDURE
  • Page 16 – CHAPTER 5. DIAGNOSTIC PROGRAM; DESCRIPTION OF EACH DIAG PROGRAM; ) DISPLAY BUZZER TEST
  • Page 17 – ) PRINTER SENSOR TEST
  • Page 19 – 1) EXTERNAL RAM TEST
  • Page 20 – 4) AD CONVERSION PORT TEST
  • Page 22 – MAIN PWB; POWER SUPPLY
  • Page 23 – CPU CG
  • Page 24 – FLASH ROM
  • Page 27 – PRINTER DRIVER
  • Page 28 – DRIVER
  • Page 29 – PWB LAYOUT; TOP
  • Page 30 – PARTS GUIDE; CONTENTS; ones for maintaining the safety and performance of the set.; SHARP CORPORATION; MODEL
  • Page 31 – Exteriors; PARTS CODE
  • Page 36 – For CANADA
  • Page 41 – Index
  • Page 44 – COPYRIGHT; No part of this publication may be reproduced,
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CODE : 00Z

q

SERVICE MANUAL

CONTENTS

Parts marked with "

!

" are important for maintaining the safety of the set. Be sure to replace these parts with specified

ones for maintaining the safety and performance of the set.

SHARP CORPORATION

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

ERA410USME

ELECTRONIC
CASH REGISTER

ER-A410

MODEL

ER-A420

SRV KEY : LKGIM7113RCZZ
PRINTER : PR-45M

II

(U, A version)

CHAPTER 1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

CHAPTER 2. OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

CHAPTER 3. MASTER RESET AND PROGRAM RESET . . . . . . . . . 6

CHAPTER 4. HARDWARE DESCRIPTION . . . . . . . . . . . . . . . . . . . . 7

CHAPTER 5. DIAGNOSTIC PROGRAM . . . . . . . . . . . . . . . . . . . . . 14

CHAPTER 6. IPL FROM EP-ROM . . . . . . . . . . . . . . . . . . . . . . . . . . 19

CHAPTER 7. CIRCUIT DIAGRAM AND PWB LAYOUT . . . . . . . . . 20

ER-A410

ER-A420

PARTS GUIDE

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Summary

Page 2 - CAUTIONS

ER-A410U/ER-A420U CAUTIONS THERE IS A RISK OF EXPLOSION IF THE BATTERY IS REPLACED BY AN INCORRECT TYPE. PROPERLY DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS. WHEN CONNECTING THE 40PIN FLAT CABLE BETWEEN THE MAIN PWB AND THE KEY PWB, CAREFULLY INSERT THE CABLE INTO CONNECTOR OPENING.

Page 3 - CHAPTER 1. SPECIFICATIONS; Front view

ER-A410U/ER-A420U SPECIFICATIONS – 1 – CHAPTER 1. SPECIFICATIONS 1. APPEARANCE ER-A410 ER-A420 2. RATING 3. KEYBOARD 3-1. KEYBOARD LAYOUT ER-A410 ER-A420 3-2. KEY LAYOUT ER-A410 KEYLAYOUT Note: All the keys except the receipt paper feed and journal paper feed keys can be re-positioned. ■ ■ ■ ■ Key n...

Page 5 - MA

ER-A410U/ER-A420U SPECIFICATIONS – 3 – 4. MODE SWITCH 4-1. MODE SWITCH AND MODE KEYS The mode switch has these settings: 5. DISPLAY 5-1. OPERATOR DISPLAY Layout: 5-2. CUSTOMER DISPLAY Layout: OFF: This mode locks all register operations. No changes may occur to register data. OP X/Z: This setting al...

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