Service manual

CHAPTER 5. MASTER RESET (All Memory Clear)
There are three 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 the 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-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.
MRS-1 Key
keyboard layout
ENTER PASSWORD
ac
db
keyboard layout
MASTER RESET