6 ] Adjustments - Sharp AR-RP3 Service Manual

3. Document size detection
1) Document size detection with the document set tray
When documents are set on the document set tray in the auto selec-
tion mode of paper/copy magnification ratio, the document size is
detected and paper and the copy magnification ratio are automatically
selected. When different sizes of documents are set, the max. size is
detected. The document width is detected by the document width
sensors (W1, W2, W3), and the document length is detected by the
document length sensors (L1, L2) to identify the document size.
Judgement of the document size is made in a certain timing after
detecting the document with the document set sensor (W0).
Document set
Document width sensor
size and set
direction
W1
A5
B5
A5R
A4
AB
series
B5R
A4R
8.5 x 13"
B4
A3
8.5" x 5.5"
8.5" x 5.5"R
11" x 8.5"
Inch
11" x 8.5"R
series
8.5" x 13"
8.5" x 14"
11" x 17"
(Note) Detection sensor ON: , OFF:
Document
length sensor
W2 W3 L1 L2
[6] ADJUSTMENTS
(1) SPF auto white correction pixel adjustment
[Function]
The SPF white correction start pixel position is automatically adjusted.
This adjustment is performed after the lens unit is replaced.
[Operation]
Open the SPF unit and press the [OK] key.
(Initial screen)
[ ] indicates the order number of the pixel of the white
sheet for SPF exposure correction in the SPF position.
Sim63-7 SPF ADJ.
W h e n t h e a d j u s t m e n t i s c o m p l e t e d n o r m a l l y ,
WHITE ADJUST
"COMPLETE" is displayed, and data are written into the
EEPROM.
When the adjustment is completed abnormally,
PRESS OK KEY EXEC
"ERROR" is displayed and data are not written into the
EEPROM.
[CA] key: Cancels the test command.
[Interruption] key: Shifts to the sub code entry menu.
Press Press
the [OK] key. the [RETURN] key.
[OK] key: Shifts to the execution menu.
The SPF white correction start pixel = Displayed
pixel position - 34
(During execution)
Interruption is inhibited during execution.
Sim63-7 SPF ADJ.
WHITE ADJUST
If the simulation is executed with the SPF unit
closed, an error is resulted.
EXEC
During execution,
"EXEC" is highlighted.
Normal end Abnormal end
(Initial screen with the execution result displayed)
Sim63-7 SPF ADJ. Sim63-7 SPF ADJ.
WHITE ADJUST WHITE ADJUST
CPMPLETE ERROR
[160] [ 0]
PRESS OK KEY EXEC PRESS OK KEY
(2) RSPF magnification ratio adjustment
Note : When performing this adjustment, check that the CCD unit
is properly installed.
: When performing this adjustment, check that the OC mode
adjustment in copying is completed.
1) Place a scale on the document table as shown below, and make a
normal copy to make a test chart.
Note: Since the printed paper is used as the test chart,
place the scale in parallel to both sides.
2) Set the test chart to the SPF and make a normal copy.
3) Compare the copy and the test chart.
If an adjustment is needed, perform the following procedures.
4) Execute SIM 8-1. The auto exposure lamp lights up.
EXEC