Sharp AR-250, Service Manual

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[EXECUTE] key on
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Purpose Operation test/check
Function
(Purpose) Used to check the operation of the main drive (exclud-
ing the scanner section) and to check the operation of
the toner concentration sensor. (The toner concentra-
tion sensor output can be monitored.)
Section DRIVE
Item Operation
Operation/
Procedure The main motor rotates for 3 minutes, and the drive
system can be checked.
The toner concentration sensor output value is displayed.
When the [EXECUTE] key is pressed, it is highlighted and the main
motor rotates and the toner concentration sensor output value is dis-
played.
After 3 minutes, the main motor stops and the [EXECUTE] key re-
turns to the normal display.
If the [EXECUTE] key is pressed during rotation, the operation is
stopped and the [EXECUTE] key returns to the normal display.
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Purpose Setting
Function
(Purpose) Used to make the initial setting of toner concentration
when replacing developer.
Section Image process
(Photoconductor/
Developing/Transfer/
Cleaning) Developer/Toner Hopper
Operation/
Procedure When the [EXECUTE] key is pressed, it is highlighted
and the main motor rotates, and the toner concentra-
tion sensor detects the toner concentration and the out-
put value is displayed.
After stirring for 3 minutes, the toner concentration detection level av-
erage value is set (stored) as the reference toner concentration con-
trol value.
If the [EXECUTE] key is pressed during rotation, the operation stops
and the [EXECUTE] key returns to the normal display.
If [EE-EU] or [EE-EL] is displayed, it means the reference toner con-
centration control value is not set normally.
Default: 0
(Note) Do not set to 0.
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Function
(Purpose) Used to set the timing of toner concentration control
correction B and the correction quantity. The timing is
determined according to the acuumulated use time of
developer. (AR-501/505/507 only)
Operation/
Procedure When this simulation is executed, the current set value
is displayed. Under this state, the set value can be
changed by pressing the 10-key.
When [OK] key is pressed, the set value is stored in the EEPROM.
Content Set range Default
A The first correction time [min] 0 – 500 200
B Second and later correction time [min] 0 – 500 50
C Number of times of correction 0 – 10 3
D Correction quantity 0 – 30 0
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Purpose Setting
Function
(Purpose) Used to set options. (This simulation is used to make
option setting when an option is installed.)
Item Specifications Options
Operation/
Procedure Enter the code number corresponding to the option in-
stallation with the 10-key pad and press the [OK] key.
When an option is installed or removed, this setting must be changed
accordingly. If this setting is improper, an error message is displayed.
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