UP-600, UP-700 (serv.man20). UP600-700 Network Card Manual - Sharp ECR Service Manual (repair manual). Page 12

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Display : [MAC ADD&FIRM WRITE] 
Input the MAC address and press the ENTER key.
MAC address:
The UP-E101N has a seal carrying a MAC address of hexadeci-
mal number attached on its CPU.
Enter this unique code (XXYYZZ) of hexadecimal number as the
values (3 values of 3 digits) converted to decimal numbers,
through the keyboard.
Example: When XX,YY,ZZ = 10,00,EB, enter 016,000,224 as
decimal numbers.
Start the writing of the MAC address & Firmware program
When writing is completed, the following message is displayed as
shown below.
Display :
7)
Press the CANCEL key to exit.
8)
Turn OFF the AC switch of the ECR/POS (UP-600/700).
9)
Remove the EPROM ( Master ROM) from the UP-E10IN (IC5:
IC socket).
10) Set the following switches to the (Normal mode) on the UP-
E10IN.
SW1 : [EPROM] 
 [FLASH]
SW2 : [VCC] 
 [GND]
11) Execute the "Service reset" .
MAC ADDR & FIRM Write
MAC ADDRESS:
AAA BBB CCC
08 00 1F XX YY ZZ
AAA BBB CCC
MAC Address : Decimal number
XX YY ZZ
MAC Address : Hexadecimal number
08001F
XXYYZZ
08001F : Fixed code
XXYYZZ : Unique code
MAC ADDRESS
IC1 CPU
SW1
SW2
MAC ADDR & FIRM Write
MAC ADDRESS:
AAA BBB CCC
08 00 1F XX YY ZZ
TCP/IP FIRM CHANGE:
FIRM CHANGE PASS!!
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