Sharp AL-2051 Service Manual download pdf (Page 101)

AL-2051 SIMULATION, TROUBLE CODES 10 - 25

50 01 Lead edge image position [Function]

Used to adjust the copy image position and the lead edge void amount on copy paper. The

adjustment is made by adjusting the image scan start position at 100% and the print start posi-

tion (resist roller ON timing). When this simulation is executed, the current set value is displayed

in 2 digits. (Center value: 50)

When [ ] [ ] key is pressed, the setting mode and the display are changed.

Enter the adjustment value and press [START] key to save the set value and make a copy.

When the adjustment is made by the main cassette paper feed, the adjustment values of all the

paper feed ports become the same. (When the set value is increased by 1, shift is made by

0.1mm.)

* When printing with the manual paper feed tray, use paper of the letter size.

* When paper is discharged, the shifter is operated.

[Adjustment procedure]

1) Set the print start position (AE mode lamp/COPY mode lamp ON) (A), the lead edge void

amount (TEXT mode lamp/PRINT mode lamp ON) (B), and the scan start position (PHOTO

mode lamp/SCAN mode lamp ON) (C) to 0, and make a copy of a scale at 100%.

2) Measure the image loss (Rmm) of the scale.

Set C = 10 x R (mm). (Example: Set to 40.)

When the value of C is increased by 10, the image loss is decreased by 1mm. (Default: 50)

3) Measure the distance (Hmm) from the paper lead edge to the image print start position.

Set A = 10 x H (mm). (Example: Set to 50.)

When the value of A is increased by 10, the image lead edge is moved to the paper lead

edge by 1mm. (Default: 50).

4) Set the lead edge void amount to

B = 50 (2.5mm). (Default: 50)

When the value of B is increased by

10, the void is extended by about

0.1mm. (For 25 or less, however, the

void amount is regarded as 0.)

∗ The RSPF adjustment is made by

adjusting the RSPF image scan start

position after OC adjustment.

[Operation]

The operation is similar to simulation 46-

01.

Main

code

Sub

code

Contents Details of function/operation

Mode Display item LED Default

Print start position (Main cassette paper

feed)

TRAY1 COPY mode lamp

Main cassette lamp

Print start position (Manual paper feed) MFT COPY mode lamp

Manual paper feed lamp

Image lead edge void amount DEN-A PRINT mode lamp

Main cassette lamp

Image scan start position RRC-A SCAN mode lamp

Main cassette lamp

Image rear edge void amount (Cassette

paper feed)

DEN-B COPY mode lamp

PRINT mode lamp

SCAN mode lamp

Main cassette lamp

Image rear edge void amount (Manual

paper feed)

RRC-B COPY mode lamp

PRINT mode lamp

Manual paper feed lamp

5mm

10mm

Distance from the paper lead edge

to the image lead edge, H = 5mm

Image loss, R = 4mm

(Example)

1 2 ... 96 97 98 99 100 101 102 103 104 105 106 ... 138 139

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Sharp AL-2051 Service Manual Page 101

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