All Memory Clear - Sharp ER-A750 Service Manual

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.
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.
MRS-1 Key
Keyboard layout
5) Enter the password key operation
DISPLAY:
ENTER PASSWORD
Password input procedure: Press the four corners of the key-
c
b
6) Master reset is started.
DISPLAY:
MASTER RESET
7) After completion of the master reset, the buzzer sounds three
times and the following SRV mode display is shown.
DISPLAY:
5 – 1
board in the sequence of a, b, c, and
d.
Keyboard layout
a
d