Read Sharp AL-840 (serv.man5) Service Manual online
[6] MACHINE OPERATION
(1) Operation mode
This machine has the following operation modes.
Mode
Content
Copy mode
During the coy mode, print data is received but not accepted. After completion of copying, print is
automatically performed.
automatically performed.
Print mode
Laser image data from the host is printed.
Power save mode
There are the pre-heat mode and the power shut down mode. In the pre-heat mode, fusing temperature is
lowered. In the power shut down mode, all the sections excluding the control circuit are stopped.
lowered. In the power shut down mode, all the sections excluding the control circuit are stopped.
Test command (Simulation)
This mode is used for servicing (various setting, adjustments, and checking of the operations).
User program mode
Used to set the operating specifications according to user’s need.
(2) Machine status and display
There are following machine status, and the operation and display are made for each status.
Machine status
Machine condition
READY
LAMP
ON
LINE
LAMP
3 GREEN
7
SEGMENT
LED
PRE-
HEAT
LAMP
LAMP
JAM
LAMP
TONER
CERTRIDGE
REPLACE-
MENT LAMP
DRUM
CERTRIDGE
REPLACE-
MENT LAMP
Copy
lamp
NOTE
Warm up
Warming up and initializing
are performed in the fusing
section, the image process
section, the scanner
section, and the electrical
circuits.
are performed in the fusing
section, the image process
section, the scanner
section, and the electrical
circuits.
OFF
—
—
—
—
—
—
ON
READY
ONLINE
Print image is received
and printing is allowed.
and printing is allowed.
ON
ON
—
—
OFF
OFF
OFF
ON
Press the clear key twice
to enter the online mode.
to enter the online mode.
OFFLINE
Only copying is allowed.
(Printing is inhibited.)
(Printing is inhibited.)
ON
OFF
—
—
OFF
OFF
OFF
ON
BUSY
Copying
OFF
OFF
—
—
—
—
—
ON
Interruption inhibited.
Printing
ON
ON
Power
save
save
Pre-heat
mode
mode
The fusing temperature is
lowered to reduce power
consumption.
lowered to reduce power
consumption.
ON
ON
—
ON
—
—
—
OFF
When any key is pressed,
warming up is started.
warming up is started.
Power
shut
down
mode
shut
down
mode
Conduction to the loads
other than electrical
circuits is inhibited,
excluding the heater lamp
and the copy lamp.
other than electrical
circuits is inhibited,
excluding the heater lamp
and the copy lamp.
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
All lamps except for
READY indicator are
turned OFF. When any key
is pressed, warming up is
started.
READY indicator are
turned OFF. When any key
is pressed, warming up is
started.
Machine
trouble
trouble
The machine operation
cannot continue operation,
and copying or printing is
forcibly stopped.
(Conduction is stopped
excluding the display
section.) The error code is
displayed and the error
lamp is lighted.
cannot continue operation,
and copying or printing is
forcibly stopped.
(Conduction is stopped
excluding the display
section.) The error code is
displayed and the error
lamp is lighted.
OFF
OFF
The error
code is
displayed.
—
—
—
—
OFF
Requires repair work by a
serviceman.
serviceman.
Paper jam
OFF
OFF
—
ON
BLINK
—
—
OFF
Mis-feed
Paper is not fed in the
paper feed section.
paper feed section.
OFF
OFF
P-
BLINKING
—
OFF
—
—
—
The 3 green 7 segment
LED displays blink "P."
LED displays blink "P."
Consumable part
empty
empty
Photoconductor cartridge
life (20K) over
life (20K) over
OFF
OFF
—
—
—
—
BLINK
OFF
When the life is reached
during copying or printing,
the job is completed then
the machine is stopped.
during copying or printing,
the job is completed then
the machine is stopped.
Photoconductor cartridge
life (19K) near
life (19K) near
ON
ON
—
—
—
—
ON
—
Toner empty
OFF
OFF
—
—
—
ON
—
—
The machine operation is
not stopped.
not stopped.
Paper empty
OFF
OFF
P-
BLINKING
—
—
—
—
—
The input tray indicator
blinks, 3 green 7 segment
LED displays blink "P."
blinks, 3 green 7 segment
LED displays blink "P."
Print data received
from the host
from the host
ON
ON
—
—
—
—
—
ON
Interrupt copy during
printing
printing
ON/
OFF
BLINK
—
—
—
—
—
ON
6 – 1
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