Brother International MFC 8890DW Service Manual - Page 402
Operational Check of Control Panel PCB (Function code 13), DCP8080DN/8085DN
UPC - 012502622673
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4.8 Operational Check of Control Panel PCB (Function code 13) This function allows you to check the control panel PCB for normal operation. (1) Press the [1] and [3] keys in this order in the initial stage of the maintenance mode. The "00" will appear on the LCD. (2) Press the keys and buttons in the order designated in the illustration shown below. The LCD shows the corresponding number in decimal notation each time a key or button is pressed. Check that the displayed number is correct by referring to the illustration below. If a key or button is pressed out of order, the machine beeps and displays the "INVALID OPERATE" on the LCD. To return to the status ready to accept key & button entry for operational check, press the [Stop/Exit] button. (3) After the last number key or button is pressed, the machine beeps for one second and returns to the initial stage of the maintenance mode. To terminate this operation, press the [Stop/Exit] button. The machine returns to the initial stage of the maintenance mode. ■ DCP8080DN/8085DN 12 3 Fig. 7-6 6 ABC 485 D E F S 7 90 GHI T JKL MNOPQR ■ MFC8480DN/8880DN/8890DW 1234567 890ABCD EFGHIJK LM NOPQ W \]^ UYV a b c p X def q Z [ ghi RST jklmno Fig. 7-7 7-15 Confidential