Brother International HL 1850 Service Manual - Page 73

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CHAPTER 2 INSTALLATIONAND BASIC OPERATION 5.6 5.6.1 Other Control Features The printer has the following useful features; Sleep mode When the printer does not receive data for a certain period of time (timeout), it enters sleep mode. The default timeout is 5 minutes and it is automatically adjusted to the most suitable time-out setting depending on the frequency of your printer use (Intelligent Sleep Mode). While the printer is in sleep mode, the data LED and the LCD back light are off and it is as if they were turned off, but the printer can still receive data from the computer. Receiving a print file or document automatically wakes up the printer to start printing. Pressing any switch on the control panel also wakes up the printer. NOTE;• • When the printer goes into sleep mode, the fan will not stop until the printer engine has cooled down. The fan running time varies depending on the sleep mode timeout because the fan running conditions are defined as follows; 1) The fan runs for 10 minutes whenever printing finishes. 2) The fan runs while the printer is in ready status. 3) The fan runs for at least 5 minutes after the printer goes into sleep mode. (EX;• If the timeout is 5 minutes, the fan will be running for 5 minutes after the printer goes into sleep mode.) • Sleep mode allows the print engine to cool, so the temperature of the room and how long the printer has been in sleep mode affects the warm-up time. This warm-up time can take up to 45 seconds. The LCD back light turns green with the "WARMING UP" message on the display to indicate that the printer is warming up. 5.6.2 Inspection mode The printer incorporates various inspection modes. The printer enters into each inspection mode by panel switch operation. For details on inspection mode, see section 9. `INSPECTION MODE' in CHAPTER 6. 2-44

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CHAPTER
2
INSTALLATION
AND
BASIC
OPERATION
5.6
Other
Control
Features
The
printer
has
the
following
useful
features;
5.6.1
Sleep
mode
When
the
printer
does
not
receive
data
for
a
certain
period
of
time
(timeout),
it
enters
sleep
mode.
The
default
timeout
is
5
minutes
and
it
is
automatically
adjusted
to
the
most
suitable
time-out
setting
depending
on
the
frequency
of
your
printer
use
(Intelligent
Sleep
Mode).
While the
printer
is
in
sleep
mode,
the
data
LED
and
the
LCD
back
light
are
off
and
it
is
as
if
they
were
turned
off,
but
the
printer
can
still
receive
data
from
the
computer.
Receiving
a
print
file
or
document
automatically
wakes
up
the
printer
to
start
printing.
Pressing
any
switch
on
the
control
panel
also
wakes
up
the
printer.
NOTE;•
•
When
the
printer
goes
into
sleep
mode,
the
fan
will
not
stop
until
the
printer
engine
has
cooled
down.
The
fan
running
time
varies
depending
on
the
sleep
mode
timeout
because
the
fan
running
conditions
are
defined
as
follows;
1)
The
fan
runs
for
10
minutes
whenever
printing
finishes.
2)
The
fan
runs
while
the
printer
is
in
ready
status.
3)
The
fan
runs
for
at
least
5
minutes
after
the
printer
goes
into
sleep
mode.
(EX;•
If
the
timeout
is
5
minutes,
the
fan
will
be
running
for
5
minutes
after
the
printer
goes
into
sleep
mode.)
•
Sleep
mode
allows
the
print
engine
to
cool,
so
the
temperature
of
the
room
and
how
long
the
printer
has
been
in
sleep
mode
affects
the
warm-up
time.
This
warm-up
time
can
take
up
to
45
seconds.
The
LCD
back
light
turns
green
with
the
"WARMING
UP"
message
on
the
display
to
indicate
that
the
printer
is
warming
up.
5.6.2
Inspection
mode
The
printer
incorporates
various
inspection
modes.
The
printer
enters
into
each
inspection
mode
by
panel
switch
operation.
For
details
on
inspection
mode,
see
section
9.
`INSPECTION
MODE'
in
CHAPTER
6.
2-44