Brother DCP-8070D Service Manual page 513

■ Scanning and Printing Check
Scan the test chart TC-023 with ADF, and make sure there are no problem of the
printed image.
Make sure there are no problem of the ADF, document scanner unit and the
performance of recording part.
■ ROM Version Check (Maintenance Mode: Code 25)
Refer to "4.9 ROM Version Check (Function code 25)" in Chapter
the most recent ROM.
■ Operational Check of Fans (Maintenance Mode: Code 78)
Refer to "4.20 Operational Check of Fans (Function code 78)" in Chapter
there are no problem of the operation of the fan.
■ Backup to the Main PCB of the Wireless LAN PCB Information
(Wireless LAN model only)
The main PCB stores a part of the information of EEPROM on the wireless LAN PCB. It
is necessary to write the information of EEPROM on the wireless LAN PCB.
(1) Turn the power supply of the machine on while pressing the [ ] and [OK] button
at the same time. (Hold on the [ ] and [OK] button while pressing it.) "PLEASE
WAIT" is displayed on the LCD. When continue pressing the [ ] and [OK] button,
"CHECK START" is displayed on the LCD. AT this time, release the two buttons.
(2) After having passed for a while, "WLAN MODULE OK" is displayed on the LCD.
Turn the power supply of the machine off after two indications are displayed.
6-11
7, check whether it is
7, make sure
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