Brother HL-4000CN Service Manual page 13

Power Source
Keep the power supply off during maintenance operation to prevent electric shock, burns
and other damages. Keep the power plug disconnected during the maintenance operation.
If the power supply should be kept connected for measurement of voltage or other similar
reasons, sufficient care should be given to prevent electric shock, by following the
procedures of this manual.
While the printer is ON, never touch live parts if not required absolutely.
Power is supplied to the power switch / inlet (LVPS ASSY) even while the printer is off.
Never touch its live components.
Do not touch live parts unless otherwise specified.
Driving Units
When servicing gears or other driving units, be sure to turn them OFF and plug off. Drive
them manually when required.
Never touch the gears or other driving units while the printer is running.
WARNING
WARNING
WARNING
WARNING
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