Read Sharp AL-840 (serv.man5) Service Manual online
(3) Relationship between the power save mode and the display and machine operations
The power save mode is of two steps: the pre-heat mode and the power shut down mode. When the time set by user program 2 or 3 is passed from
the non-operation state, the machine enters the pre-heat mode and the power shut down mode.
the non-operation state, the machine enters the pre-heat mode and the power shut down mode.
Machine condition
READY LAMP
OTHER
LAMPS & LEDS
FUSING
SECTION
CONTROL
FAN
Copy lamp
Other load
Ready (Machine idle)
ON
Current state
indicated
(No change)
160°C
ON
ON
Normal
operation
Power save
Pre-heat mode
ON
Current state
indicated
(No change)
80°C
ON
OFF
OFF
Power shut
down mode
down mode
OFF
OFF
OFF
OFF
OFF
OFF
(4) Consumable parts life and operation
When consumable parts life is approached, a warning display is made. When the photoconductor drum life is reached, the machine is forcibly
stopped.
stopped.
Machine condition
READY
LAMP
3 GREEN 7
SEGMENT
LED
TONER
CARTRIDGE
REPLACEMENT
LAMP
DRUM
CARTRIDGE
REPLACEMENT
LAMP
NOTE
Consumable
part empty
part empty
Photoconductor
cartridge life
(20K) over
cartridge life
(20K) over
OFF
—
—
BLINK
When the life is reached during copying or
printing, the job is completed and then the
machine is stopped.
printing, the job is completed and then the
machine is stopped.
Photoconductor
cartridge life
(19K) near
cartridge life
(19K) near
ON
—
—
ON
Toner empty
ON
—
ON/BLINK
—
The machine operation is not stopped.
(However, the print density is lowered.)
(However, the print density is lowered.)
Paper empty
OFF
P-BLINKING
—
—
3 GREEN 7 SEGMENT LED show "P."
(5) Selection between the ON LINE mode
and the OFF LINE mode
In the ON LINE mode, the ON LINE lamp lights up to show that the
machine is ready for receiving print data from the host.
During copying, the machine is in the OFF line mode and the ON
LINE lamp goes off.
During printing, when copy interruption is made, printing is interrupted
and the ON LINE lamp blinks.
When a certain time passes after completion of copying, the machine
go back to the ON LINE mode and printing is resumed.
In any case, copying takes priority over printing.
The timing to going back to the ON LINE mode after completion of
copying can be set by the user program.
When the clear key is pressed twice, the machine goes into the ON
LINE mode immediately.
machine is ready for receiving print data from the host.
During copying, the machine is in the OFF line mode and the ON
LINE lamp goes off.
During printing, when copy interruption is made, printing is interrupted
and the ON LINE lamp blinks.
When a certain time passes after completion of copying, the machine
go back to the ON LINE mode and printing is resumed.
In any case, copying takes priority over printing.
The timing to going back to the ON LINE mode after completion of
copying can be set by the user program.
When the clear key is pressed twice, the machine goes into the ON
LINE mode immediately.
(6) Paper width detection and machine
operation
This machine is designed to detect only the following two sizes:
Max. paper size and Min. paper size shown in the table below.
Imaging (main scanning direction void area and image length) is
performed according to the paper size the machine detects, There-
fore, if the SIM 26-6 set value is not matched with the paper
specification, the image position on the paper is shifted to cause a
trouble.
Max. paper size and Min. paper size shown in the table below.
Imaging (main scanning direction void area and image length) is
performed according to the paper size the machine detects, There-
fore, if the SIM 26-6 set value is not matched with the paper
specification, the image position on the paper is shifted to cause a
trouble.
Destination code
Detectable paper size
Set value
Destination Paper type
Paper width
detector ON
detector ON
(Max. paper size)
Paper width
detector OFF
(Min. paper size)
0
Inch series
11
×
8.5/14
×
8.5
8.5
×
5.5/8.5
×
5.5
1
EX Japan
AB series
A4 (210
×
356mm)
A5
2
Japan
AB series
A4 (210
×
356mm)
B5
(7) Auto copy function
The copy conditions can be set after turning on the power or during
resume operation from the energy save mode. Pressing the start key
allows copy reservation. After making a copy reservation, when the
copier warmup is completed, copy is started.
resume operation from the energy save mode. Pressing the start key
allows copy reservation. After making a copy reservation, when the
copier warmup is completed, copy is started.
Once a copy reservation is made, the copy conditions cannot be
canceled unless the clear key is pressed.
canceled unless the clear key is pressed.
(8) AE level adjustment procedure
Select the PHOTO mode with the copy mode select key, press and
hold the key for 5 sec, and the mode display will change from
PHOTO to AUTO blinking and the currently adjusted level will be
displayed on the exposure level display.
hold the key for 5 sec, and the mode display will change from
PHOTO to AUTO blinking and the currently adjusted level will be
displayed on the exposure level display.
Under this state, operate the density adjustment key to adjust the
auto density level. When the auto density level is adjusted, the
manual and the photo density levels are also shifted accordingly.
auto density level. When the auto density level is adjusted, the
manual and the photo density levels are also shifted accordingly.
When the copy mode select key is pressed after adjustment, the
mode display changes from blinking to lighting. Then the density level
setting is completed.
mode display changes from blinking to lighting. Then the density level
setting is completed.
1) Press the copy mode select key several times to light the photo
lamp
1 3 5
AUTO
MANUAL
PHOTO
6 – 2
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