Brother MFC640CW - 2 ] MACHINE ERROR 41 Error Message; 3 ] Ink-Related Problems

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[ 2 ] "MACHINE ERROR 41" error message
The error message "MACHINE ERROR 41" appears if the head drive voltage drops from the high
to low level in an abnormally short period. The source of the problem is either the head/carriage
unit or power supply PCB.
Check Possible causes Problems that may result
Head/carriage unit - The carriage-head flat cable is
disconnected from the carriage
PCB.
- Piezoelectric (PZT) ceramic
actuator defective (Cracks or rare
short)
At the start of printing or head
cleaning operation, correct
voltage will not be applied to
the electrodes on the surface of
the PZT ceramic actuator
(described in Chapter 3, Section
3.2.2.2).
Power supply PCB - A power failure when the
machine was in operation resulted
in a damaged part.
- Exposure to power surges caused
by lightning damaged electronic
devices on the power supply
PCB.
The head drive voltage will be
too low to drive the print head.
Main PCB Voltage detection circuit defective The head drive voltage
becomes too high or low.
[ 3 ] Ink-related problems
Problems of this nature may arise not only due to machine malfunction but also to the user's actions.
IMPORTANT: In many cases, the user fails to set ink cartridges in place.
Problems due to the user's actions
Check Possible causes Problems that may result
Ink cartridges - Ink cartridges are not inserted
fully into the ink refill ASSY.
- One or more of the ink cartridges
are not loaded.
- One or more of the ink cartridges
has run out of ink.
The machine will not be able to
print.
Data setting
required after
replacement
The related ink dot counter(s) was
not reset after replacement of ink
cartridge(s).
After the machine is used for a
while, the "INK EMPTY XXX"
message will appear and the
machine will no longer be able
to print.