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I
MECHANICAL SYSTEM!
C.
Copyboard Cover
1
.
Replacing the
Copyboard
Sheet
The
copyboard
sheet
is
attached
to
the
copyboard
cover using adhesive tape
and
can be detached
by
pulling
at
its
corner.
After
replacement,
make
sure
to
even
out
the
sheet
for
even
contact.
D.
Fans
1.
Outline
The NP-1550
is
equipped
with three
fans
to circulate
the
air
inside the
machine,
there-
by
preventing the
machine
from
overheating.
Each
fan
serves
the
following function.
Scanner
cooling fan
(FM1): cools the scan-
ner feeder fan
Exhaust
fan
(FM2): discharges
air
to
the
outside.
Feeder
fan
(FM3): transports
copy paper
2.
Scanner
Cooling
Fan
(FM1)
1
)
Detach
the rear
cover.
2)
Cut
off
the
harness
band
as
necessary.
3)
Disconnect
the
connector
(J309)
from the
DC
controller
PCB.
4)
Remove
the three
screws,
and
detach
the
scanner
cooling
fan.
©
Connector
(J309)
©
Scanner
cooling fan
Figure
4-9
Figure
4-8
3.
Exhaust Fan (FM2)
1)
Open
the
front
door,
and
detach
the
drum
unit.
Detach
the rear cover.
Disconnect
the
connector
(J311),
and remove
the
two screws
from
the
DC
controller
PCB;
then,
shift
the
DC
controller
PCB.
Remove
the
two screws
from the
rear of
the
exhaust
fan.
2)
3)
4)
Screws
Figure 4-10
COPYRIGHT©
1992
CANON
INC.
CANON
NP-1550
REV.1
SEPT. 1992
PRINTED
IN
JAPAN
(IUPRIHE
AUJAPON)
4-3
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