Read Sharp ER-A771 (serv.man4) Service Manual online
ER-A771VPM
MASTER RESET (All Memory Clear)
2 – 1
CHAPTER 2. 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 "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.
Keyboard layout
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.
Keyboard layout
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:
MRS-1 Key
ENTER PASSWOPRD
a
c
d
b
MASTER RESET
Click on the first or last page to see other ER-A771 (serv.man4) service manuals if exist.