Sharp ER-A750 Service Manual page 19

MRS-2 (Master resetting 2)
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.
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 layout
5) Enter the password key operation
DISPLAY:
ENTER PASSWORD
Password input procedure: Press the four corners of the key-
c
b
Keyboard layout
MRS-2 Key
board in the sequence of a, b, c, and
d.
a
d
6) Set the fixed keys in the table below. (Start from the zero "0" key,
The keys are displayed sequentially.)
DISPLAY:
ENTER 0
[Key setup procedure]
MRS-2 Key
0
executed position set
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 stan-
dard key layout.
Key Key
Key name
No. No.
001 "0" key 011
002 "1" key 013
003 "2" key 014
004 "3" key 015
005 "4" key 016
006 "5" key 017
007 "6" key 018
008 "7" key 019
009 "8" key 020
010 "9" key 021
7) Master reset is started.
DISPLAY:
MASTER RESET
8) After completion of the master reset, the buzzer sounds three
times and the following SRV mode display is shown.
DISPLAY:
5 – 2
KEY
Free key
0
Disable
Key
Key name
No.
"00" key 022 "CANCEL" key
Decimal point "•"
023 "ENTER" key
key
"CL" key 024 "CA/AT" key
"@/FOR" key
"SBTL" key
"MODE" key
UP " " key
DOWN " " key
LEFT " " key
RIGHT " " key
Setup
complete
Key name