Sharp ER-A440 Service Manual

SERVICE MANUAL

ELECTRONIC

CASH REGISTER

MODEL

ER-A440

SRV Key : LKGIM7113RCZZ

PRINTER : DP-730

("V" version)

CAUTION

EXTREME CAUTION MUST BE TAKEN WHEN SERVICING THIS MACHINE. EVEN

THOUGH THE MODE SWITCH IS IN THE OFF POSITION, VOLTAGE IS STILL SUPPLIED

TO THE ENTIRE MACHINE.

WHEN WORKING ON THIS MACHINE MAKE SURE THAT THE POWER CORD IS

REMOVED FROM THE WALL OUTLET.

CHAPTER 1. SPECIFICATIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

CHAPTER 2. OPTIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1

CHAPTER 3. SERVICE (SRV) MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1

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

4-1

CHAPTER 5. TEST FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1

CHAPTER 6. DOWN LOAD FUNCTION

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-1

CHAPTER 7. SERVICE PRECAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-1

CHAPTER 8. CIRCUIT DIAGRAM & PWB LAYOUT . . . . . . . . . . . . . . . . . . .

8-1

PARTS GUIDE

SHARP CORPORATION

CONTENTS

This document has been published to be used

for after sales service only.

The contents are subject to change without notice.

Parts marked with "

" is 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.