Brother MFC990CW Service Manual page 308

The Brother Maintenance USB Printer Properties window appears as shown below.
4) Click the Ports tab.
In this example, the port number assigned to the Brother Maintenance USB Printer is
USB001.
(9) In the Head Info. box on the BrUsbSn screen
(e.g., ALR7765501200000) which is printed on the bar code label attached to the lower
cover. Click the OK button.
(10) To check that the entered head property code is correct (using function code 68 in
9, Section 9.1.4.23), press the 6 and 8 keys in this order. Then press the 2, 5, 8, and 0 keys
in this order. For models without numerical keypad, enter 6, 8, 2, 5, 8, and 0 in this order
using the , and OK keys.
The LCD shows the current head property information (16-digit code) stored in the
EEPROM on the main PCB.
(11) Check that the character string entered in step (9) appears.
If it is OK, press the Stop/Exit key.
If something other than that appears, check the connection between the PC and machine
and go back to step (6).
(page 7-8), type the 16-digit property code
7-10
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