ER-A410, ER-A420 SCANNING (serv.man3). ERA410 420 Dealer Manual for Scanning Roms - Sharp ECR Service Manual (repair manual). Page 7

                                                               

 

 

 
The ERA410/A420 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: 
 

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 ERA410/A420 
“fixed keys” 

 
 
1. 

Master Resets: 

The Master Reset procedures are primarily performed during installation and setup of the ERA410 
and ERA420 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][.][@/FOR][SBTL][CA/AT]           

 
IMPORTANT NOTES: 
      During the Master Reset initialization, the following actions 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