Sharp AL-1043, Service Manual

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AL-1551 SIMULATION, TROUBLE CODES 10-11
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 X 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 X 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
Machine with a single manual paper feed unit
Main
code Sub
code
Content
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
5mm
10mm
Distance from the paper
lead edge to the image
H = 5mm
Image loss
R = 3mm
(Example)
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
Adjustment mode Display lamp
Print center offset (Main cassette paper feed) AE, Main cassette lamp
Print center offset (Manual paper feed) AE lamp (Blinking)
OC/Document center offset AE, TEXT lamp
SPF/Document center offset AE, TEXT, PHOTO lamp
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