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There are two possible methods to perform a master reset.

Used to clear all memory contents and return machine back to its
initial settings.

Return keyboard back to default for default kyeboard layout.

1) Turn off the AC switch.

2) Set the reset switch to "ON" position

3) Turn on the AC switch. (Wait one second)

4) While holding down MRS-1 key , turn to "OFF" the reset switch.

MRS-1 key : The key located on Left upper corner of the key-

board.

5) Enter the password key operation

DISPLAY:

Password input procedure: Press the four corners of the key-board

in the sequence of a, b, c, and d.

6) Master reset is started.

DISPLAY:

7) After completion of the master reset, the buzzer sounds three

times and the following SRV mode display is shown.

DISPLAY:

MRS-1 Key

keyboard layout

ENTER PASSWOPRD

a

c

d

b

keyboard layout

MASTER RESET

Used to clear all memory and keyboard contents. This reset returns
all programming back to defaults.

The keyboard must be entered by hand. This reset is used if an
application needs different keyboard layout other than that supplied
by a normal MRS-1.

1) Turn off the AC switch.

2) Set the reset switch to "ON" position

3) Turn on the AC switch. (Wait one second)

4) While holding down MRS-2 key , turn to "OFF" the reset switch.

MRS-2 key:

The key located on Right upper corner of the
keyboard.

5) Enter the password key operation

DISPLAY:

Password input procedure: Press the four corners of the key-board

in the sequence of a, b, c, and d.

6) Set the fixed keys in the table below. (Start from the zero "0" key,

The keys are displayed sequentially.)

DISPLAY:

[Key setup procedure]

NOTES:

1: When the 0 key is pressed, the key of the key number on

display is disabled.

2: Push the key on the position to be assigned. With this, the

key of the key number on display is assigned to that key
position.

3: When relocating the keyboard, the PGM 1/2 mode use

standard key layout.

Key

No.

Key

name

Key

No.

Key name

Key

No.

Key name

001

"0" key

011

"00" key

021

RIGHT "

" key

002

"1" key

012

"000" key

022

"CANCEL" key

003

"2" key

013

Decimal point " " key

023

"ENTER" key

004

"3" key

014

"CL" key

024

"TL" key

005

"4" key

015

" " key

006

"5" key

016

"SBTL" key

007

"6" key

017

"MODE" key

008

"7" key

018

UP "   " key

009

"8" key

019

DOWN "   " key

010

"9" key

020

LEFT "

" key

7) Master reset is started.

DISPLAY:

8) After completion of the master reset, the buzzer sounds three

times and the following SRV mode display is shown.

DISPLAY:

MRS-2 Key

keyboard layout

ENTER PASSWOPRD

a

c

d

b

keyboard layout

ENTER 0        KEY

0

Free key

0

Disable

MRS-2
executed

Key
position set

Setup
complete

MASTER RESET

>>>>> USE FONT <<<<<

Helvetica/ Helvetica-Condensed/ Century-Schoolbook/ Symbol & OriginalFonts: (RingWorld2/RingFont2/Pa

Symbol/PartsCod)

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1. General ........................................................................................ 1

2. System configuration ................................................................... 1

2-1.

Test system ....................................................................... 1

3. Diagnostics .................................................................................. 1

1) Master reset procedure ............................................... 1

2) Program reset (service reset) procedure ..................... 1

3-1.

Execution of diagnostics ................................................... 1

3-2.

RAM Diagnostics .............................................................. 2

1) Standard RAM Check  ................................................. 2

2) UP-P02MB2 Check  .................................................... 2

3-3.

ROM & SSP Diagnostics .................................................. 3

1) Standard ROM Check ................................................. 3

2) SERVICE ROM Check ................................................ 3

3) SSP Check  ................................................................. 4

3-4.

Timer & Keyboard & Clerk Switch Diagnostics ................. 4

1) Timer Check ................................................................ 4

2) Keyboard Check .......................................................... 4

3) Clerk SW Check .......................................................... 4

3-5.

RS232 I/F Diagnostics ...................................................... 4

1) CHANNEL Check ........................................................ 4

2) CH1 Check .................................................................. 5

3) CH2 Check .................................................................. 5

4) CH3 Check .................................................................. 5

5) CH4 Check .................................................................. 5

6) CH5 Check .................................................................. 5

7) CH6 Check .................................................................. 5

8) CH7 Check .................................................................. 6

9) CH8 Check .................................................................. 6

3-6.

Liquid Crystal Display Diagnostics .................................... 6

1) Liquid Crystal Display Check  ...................................... 6

3-7.

Rear & Pole Display Diagnostics ...................................... 7

1) Rear & Pole Display Check ......................................... 7

3-8.

SHARP Retail Network Diagnostics .................................. 7

1) SRN Self Check ........................................................... 7

2) SRN Flag Send Check ................................................ 8

3) SRN Data Send Check ................................................ 8

4) Data Transmission Check ........................................... 8

3-9.

EFT Diagnostics ................................................................ 9

1) EFT Check ................................................................... 9

3-10. Magnetic Card Reader Diagnostics ................................ 10

1) Magnetic Card Reader Check ................................... 10

3-11. Drawer Diagnostics ......................................................... 10

1) Drawer 1 Check ......................................................... 10

2) Drawer 2 Check ......................................................... 10

This diagnostics program is used for simplified check of the ER-A770
series operations in servicing.
The diagnostics program is built in the standard ROM.

ER-A770 only

Starting the diagnostics

This diagnostics program is written in the external ROM and executed
by the CPU (H8/510). To operate this program, the following condi-
tions must be satisfied.

The power for the logic system is proper.
(+5V, VRAM, VCKDC, POFF, +20V)
The input/output pins and the internal logic of the CPU are normal.
In addition, CKDC9, MPCA8, the system bus, and the standard
ROM/RAM are normal.

To start the machine for the first time, perform the master reset. 

In order to add an option unit when the machine is normally operat-
ing, perform the program reset. 

Turn off the power.
Set the CKDC reset switch to RESET position.
Turn on the power. 
While pressing the specified key, set the CKDC reset switch to the
normal position. 

Turn off the power. 
Set the CKDC reset switch to RESET position. 
Turn on the power. 
Set the CKDC reset switch to the normal position. (Do not pres-
sany key.)

To start the diagnostics, select "DIAGNOSTICS" with the cursor in the
menu selection in SRV mode, and press the enter key.
The DIAG MAIN MENU is started and the following menu screen is
display. The cursor position is highlighted. Use   key and   key to
move the cursor. Move the cursor to the process you desire and
press the enter key. The selected individual diagnostics program is
executed. When the individual diagnostics program is completed, the
display returns to the menu screen. To terminate the diagnostics,
press the CANCEL key. Then the display returns to the SRV mode
menu screen.

ER-A770

This diagnostics is used to test the standard RAM and the expansion
RAM.

The following menu is displayed. The cursor position is highlighted.
Use   key and   key to move the cursor. Move the cursor to the
process you desire and press the enter key. The selected individual
diagnostics program is executed.

Check content

For the pseudo SRAM of the standard RAM 1MB, the following
check is performed. The memory contents will not be changed by
this check. 

The following processes are performed for the memory address
(700000H ~ 7FFFFFH) to be checked.

PASS1:

Memory data save

PASS2:

Data "0000H" write

PASS3:

Data "0000H" read/compare, data "5555H" write

PASS4:

Data "5555H" read/compare, data "AAAAH" write

PASS5:

Data "AAAAH" read/compare

PASS6:

Memory data writed the saved data

In case of a compare error in the check sequences of PASS1 ~
PASS6, an error display is made. If there is no error at all, the
check is normally terminated. 

In addition, the following address check is performed. 

In case of an error, an error display is made and read/write of the
address where the error occurred is repeated.

Check point address = 700000H, 700001H

700002H, 700004H
700008H, 700010H
700020H, 700040H
700080H, 700100H
700200H, 700400H
700800H, 701000H
702000H, 704000H
708000H, 710000H
720000H, 740000H
780000H

Display

The screen displays the capacity of RAM in the unit of 64 KB.

The error address and the bit are displayed only when the error
occurs. (If the error does not occur, they are not displayed.)

Terminating procedure

After completion of check, press the CANCEL key. 

Check content

The UP-P02MB2 presence check is performed in the following
procedure. The memory contents must not be changed by this
check.

55AAH is written into 9FFFFEH.

9FFFFEH is read and compared with 55AAH. If the both data
are correct, the following procedure is performed. The system
reads 9FFFFEH  and compares it with 55AAH. If both data are
correct, the following tests will be performed. If not, the screen
displays the message "Extended RAM size : 0KB", and ends
the test.

For the UP-P02MB2, the following check is performed.

The following processes are performed for the check address
(800000H ~ 9FFFFFH).

PASS1:

Memory data save

PASS2:

Data "0000H" write

PASS3:

Data "0000H" read/compare, data "5555H" write

PASS4:

Data "5555H" read/compare, data "AAAAH" write

PASS5:

Data "AAAAH" read/compare

PASS6:

Memory data writed the saved data

In case of a compare error in the check sequences of PASS1 ~
PASS6, an error display is made. If there is no error at all, the
check is normally terminated.

In addition, the following address check is performed in the above
check sequence.

In case of an error, an error display is made and read/write of the
address where the error occurred is repeated without performing
the check.

RAM Diagnostics
ROM & SSP Diagnostics
Clock & Keyboard & Clerk Diagnostics
Serial I/O Diagnostics
LCD Diagnostics
Rear & Pole Display Diagnostics
SRN Diagnostics
EFT Diagnostics
MCR Diagnostics
Drawer Diagnostics
Diagnostics End

ER-A770 Diagnostics V 1.0A

Product & Test Diagnostics

RAM Diagnostics

UP-P02MB2 Check

Standard RAM Check

  
  
  

Standard RAM Check

Standard memory size : 1024KB PASS!!(or ERROR!!)

Error Address xxxxxxH
    Write Data xxxxH
     Read Data xxxxH