Head/Carriage Unit Traveling Speed Check (Function Code 69) - Brother MFC5890CN Service Manual

9.4.22 Head/Carriage Unit Traveling Speed Check (Function code 69)

Function
This function checks whether or not the traveling speed of the head/carriage unit is within the
specified range.
This procedure should be performed when you replace the head/carriage unit or carriage motor,
or when you loosen the CR timing belt.
Operating Procedure
(1) Press the 6 and 9 keys in this order in the initial stage of the maintenance mode.
The machine starts aging the head/carriage unit, showing the "CR AGING" on the LCD.
In each of travel speeds 57.7, 43.3, and 21.7 inches/second, the machine checks whether
the maximum and minimum speeds are within the specified range.
• If the maximum and minimum speeds in all of the three travel speeds are within the
range, the "57O 43O 21O" appears on the LCD.
• If any one is out of the range, the machine shows some message, e.g., "57O 43O 21X" on
the LCD. This sample message indicates that the speed variation is within the allowable
range when the head/carriage unit travels at 57.7 and 43.3 inches/second; however, it is
out of the range at 21.7 inches/second.
(2) Press the Stop/Exit key to return to the initial stage of the maintenance mode.
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