Sharp ER-A770 (serv.man8) Service Manual ▷ View online
CHAPTER4. SRV RESET (Program Loop Reset) and switch to SRV mode
In the ER-A750, the following reset switch (location No.: S2) is used
to switch to the service (SRV) mode and to reset.
to switch to the service (SRV) mode and to reset.
SRV. reset
Used to return the machine back to its operation state after a lock up
has occurred.
has occurred.
PROCEDURE
1) Turn off the AC switch.
2) Set the reset switch to "OFF" position
3) Turn on the AC switch.
4) Turn to "ON" the reset switch.
5) The SRV mode is displayed as shown below.
DISPLAY:
Reset
switch
switch
Rear side :"ON" position(Reset state)
ON
OFF
Front side :"OFF" position(Reset cancel)
ON
OFF
RESET SW
RESET SW
SW1
CHAPTER 5. MASTER RESET (All Memory Clear)
There are two possible methods to perform a master reset.
MRS-1 (Master resetting 1)
Used to clear all memory contents and return machine back to its
initial settings.
initial settings.
Return keyboard back to default for default kyeboard layout.
PROCEDURE
1) Turn off the AC switch.
2) Set the reset switch to "OFF" position
3) Turn on the AC switch.
4) While holding down MRS-1 key , turn to "ON" 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
MRS-2 (Master resetting 2)
Used to clear all memory and keyboard contents. This reset returns
all programming back to defaults.
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.
application needs different keyboard layout other than that supplied
by a normal MRS-1.
PROCEDURE
1) Turn off the AC switch.
2) Set the reset switch to "OFF" position
3) Turn on the AC switch.
4) While holding down MRS-2 key , turn to "ON" the reset switch.
MRS-2 key:
The key located on Right upper corner of the
keyboard.
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.
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
executed
Key
position set
position set
Setup
complete
complete
MASTER RESET
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CHAPTER 6. DIAGNOSTICS SPECIFICATIONS
CONTENTS
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
1. General
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.
series operations in servicing.
The diagnostics program is built in the standard ROM.
2. System configuration
2-1. Test system
ER-A770 only
3. Diagnostics
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.
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, +24V)
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.
(+5V, VRAM, VCKDC, POFF, +24V)
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.
ing, perform the program reset.
1) Master reset procedure
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.
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.
2) Program reset (service reset) procedure
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.)
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.)
3-1. Execution of diagnostics
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.
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
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