Head/Carriage Unit Traveling Speed Check (Function Code 69) - Brother DCP375CW Service Manual

9.4.23 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 CR encoder strip, or when you loosen the CR timing belt, or when you apply lubrication to
head/carriage unit.
Operating Procedure
(1) Press the 6 and 9 keys in this order in the initial stage of the maintenance mode. For models
without numerical keypad, enter 6 and 9 in this order using the
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 (57.7, 43.3, 21.7 and 26.7 for the DCPJ140W)
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" ("57O 43O 21O 27O" for the DCPJ140W) 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.
9-53
, and OK keys.
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