Brother MP-21C Service Manual page 117

02 01
Maintenance sensor ON
error
The gears related to
paper feeding are out
of step with the
Maintenance sensor
OFF position.
Maintenance LED is
not ON.
The Maintenance gear
10 is not assembled
correctly.
02 02 Maintenance sensor
OFF error
The gears related to
paper feeding are out
of step with the
Maintenance sensor
ON position.
Maintenance LED
does not go OFF.
The Maintenance gear
10 is not assembled
correctly.
02 05 Maintenance protrusion
The Maintenance gear
10 is not assembled
correctly.
The Print head is not
installed correctly to
the Carriage ASSY.
03 01 Head power supply
error
(At power on or in sleep
mode)
Head voltage is
detected when the
Print head should not
be energized.
03 02 Head power supply
error
(When replacing the
Print head)
Head voltage is
detected when
replacing the Print
head.
03 03 Head power supply ON
error
Head voltage is not
detected when the
power is supplied.
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IV-16
Check the Maintenance gear 10 is
assembled correctly. Refer to Fig.
3.27 in Chapter 3.
Replace the Purge unit ASSY.
Check the Maintenance gear 10 is
assembled correctly. Refer to Fig.
3.27 in Chapter 3.
Replace the Purge unit ASSY.
Check the Maintenance gear 10 is
assembled correctly. Refer to Fig.
3.27.
Adjust the mechanical portion related
to the chassis.
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Replace the Head PCB or the Main
PCB.
Replace the Power supply PCB.
{
Replace the Head PCB or the Main
PCB.
Replace the Power supply PCB.
{
Replace the Head PCB or the Main
PCB.
Replace the Power supply PCB.