ER-A520/A530 Dealer Knowledge Book
Page 2 of 266 Specifications subject to change without notice: Revision date 10/07
Section-2: Prior to Beginning
The ER-A520/A530 POS terminal should be initialized by executing a master reset. The Program
and Master Reset operations are available in one of the following three types:
Type Description
Program Reset Initializes the hardware and resident program without clearing
memory and totalizers
Master Reset-1 Initializes the hardware and clears the entire memory – restoring
factory initial values
Master-Reset-2 Initializes the hardware and clears the entire memory – restoring
factory initial values and enabling free key layout of the ER-
A520/A530 “fixed keys”
1. Master Resets:
The Master Reset procedures are primarily performed during installation and setup of the ER-
A520 and ER-A530 model cash registers. Each has an important role when installing the
equipment.
Follow one the below procedures when you wish to perform a Master Reset.
1. General Rule:
Master Reset: Clears the entire memory and resumes initial values (default program).
Program Reset: Resumes the initial program without clearing memory.
There are 2 methods for performing a Master Reset operation.
1) Master Reset-1: Normal Master Reset (out of box setup).
Clears the entire memory and resumes initial values.
2) Master Reset-2: Enables the ability to change the layout fixed keys in addition to executing
the Master Reset-1.
Fixed Keys: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [0] [00] [000] [CL] [.] [@/FOR] [SBTL] [CA/AT]
IMPORTANT NOTES:
During the Master Reset initialization, the following events should be noted.
1) ***MRS*** is displayed on the upper line of the operator display.
2) MASTER RESET*** is printed on the journal tape.
3) The buzzer will beep 3-times.
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