Sharp AR-F152, Service Manual

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Main code Sub code Content
50 01 Lead edge image position adju Paper lead edge/rear edge void adjustment
(Outline)
This adjustment is used to adjust the copy image position and lead edge/rear edge void amount on the copy
paper by adjusting the image scan start position and the print start position (resist roller ON timing) at 100%.
(Operation/Procedure)
1. When this simulation is executed, the currently set value is displayed in two digits. (Center value: 50)
2. When the copy mode select key is pressed, each setting mode and the display are changed.
∗
The selected adjustment mode is indicated by the lamps as shown in the table below.
3. Enter the adjustment value with the 10-key and press the start key. The set value is stored and a copy is
made. (When the set value is increased by 1, the void amount is shifted by 0.1 mm.)
4. When the clear key is pressed, the set value is stored and the simulation mode is terminated.
(Adjustment method)
1. Set the print start position (A: AE ON), the lead edge void amount (B: TEXT ON), the scanning start position
(C: PHOTO ON) to zero and make a copy of a scale at 100%.
2. Measure the image loss R (mm) of the scale.
Set as C = 10
×
R (mm). (Example: Set to 30.)
∗
When C is increased by 10, the image loss is decreased
by 1 mm. (Default: 5)
3. Measure the distance H (mm) from the paper lead edge to
the image print start position.
Set as A = 10
×
R (mm). (Example: Set to 50.)
∗
When the value of A is increased by 10, the image lead
edge is shifted toward the paper lead edge by 1 mm.
(Default: 50)
4. Set the lead edge void amount as B = 50 (2.5 mm).
(Default: 50)
∗
When the value of B is increased by 10, the void is
increased by about 1 mm.
(For 25 or less, however, the void amount becomes zero.)
✩
The SPF adjustment is made by adjusting the SPF image scan start position immediately after turning on the
power.
10 Paper center OC/Document center SPF document center offset
(Outline)
The center offset position of copy image on the copy paper and that of document scan are adjusted by
adjusting the scan left margin of ASIC and the print left margin register set value.
(Operation/Procedure)
1. When this simulation is executed, the currently set value is displayed.
2. For a machine with a multi manual paper feed unit installed, when the copy mode select key is pressed, each
set mode and display are changed.
For a machine with a single manual paper feed unit installed, when the copy mode select key is pressed,
each set mode and display are changed.
✩
Machine with a multi manual paper feed unit
Distance from the paper
lead edge to the image
H = 5mm
Image loss
R = 3mm
(Example)
Adjustment mode Lighting lamps
Print start position (Main cassette) AE, Main cassette lamps
Print start position (2nd cassette) AE, 2nd lamps
Print start position (Manual paper feed) AE, Manual feed lamps
Image lead edge void quantity TEXT lamp
Image scan start position PHOTO lamp
Image rear edge void quantity AE, TEXT, PHOTO lamps
SPF image scan start position AE, TEXT lamps
Adjustment mode Display lamp
Print center offset (Main cassette paper feed) AE, main cassette lamp
Print center offset (2nd cassette paper feed) AE, 2nd cassette lamp
Print center offset (Manual paper feed) AE, Manual paper feed lamp
OC/Document center offset AE, TEXT lamp
SPF/Document center offset AE, TEXT, PHOTO lamp
AR-F152
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