Sharp SF-1120, SF-1020 service manual Display range 8 ∼

Models: SF-1120 SF-1020

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Main code

Sub code

 

 

 

Content

 

 

 

 

 

 

44

06

Grid voltage correction compulsory execution

 

 

 

The grid voltage correction is forcibly executed during the simulation.

 

 

When the operation is completed, the patch forming grid voltage after grid voltage correction is displayed on the

 

 

copy quantity display. The relationship between the display value and the patch forming grid voltage value is as

 

 

shown below.

 

 

 

 

 

 

 

 

 

 

 

Display value

Patch forming grid voltage

 

 

 

 

 

 

Display range: 8 99

 

 

 

8

200 V

 

 

 

 

 

When the display is

 

 

 

50

410 V

 

 

 

changed by 1, the

 

 

 

 

 

 

 

 

 

 

 

 

 

99

655 V

voltage is changed by 5V.

 

 

 

 

 

 

The drum surface data and the patch data after execution of this simulation can be checked with SIM 44-10.

(Note) When this simulation is executed, the patch forming grid voltage is stored, and the grid voltage amount may be changed from the patch forming grid voltage before and after execution.

07

Image density sensor, drum mark sensor operation test

Used to read the light reception level for the light emitting amount of the image density sensor and the drum mark sensor and to display on the copy quantity display.

When this simulation is executed, the light emitting levels of the image density sensor and the drum mark sensor are changed in 5 steps and each light reception level is read.

After completion of operation, the measured data are displayed on the copy quantity display.

Since there are two or more display items, the third digit is used to make distinction between the light reception level and the original judgment level, and the lower two digits are used to display the data.

The display is selected by the magnification ratio key.

Copy quantity display

Display data

 

 

3rd digit

2nd, 1st digits

 

 

 

 

A

Measured

Image density sensor input value, when light emitting 1V

 

data

 

b

Image density sensor input value, when light emitting 2V

 

 

 

 

C

 

Image density sensor input value, when light emitting 3V

 

 

 

d

 

Image density sensor input value, when light emitting 4V

 

 

 

E

 

Image density sensor input value, when light emitting 5V

 

 

 

F

Judgement

Drum mark sensor level, when light emitting 1V

 

data

 

G

Drum mark sensor level, when light emitting 2V

 

 

 

 

H

 

Drum mark sensor level, when light emitting 3V

 

 

 

I

 

Drum mark sensor level, when light emitting 4V

 

 

 

J

 

Drum mark sensor level, when light emitting 5V

 

 

 

The data displayed with the lower two digits:

“A”“E”: Image density sensor A/D input value. Converted into a decimal number and displayed. (Display range: 0 99)

“F”“J”: Drum mark sensor level is displayed with 0 and 1.

“0”: Drum mark sensor sensing impossible

“1”: Drum mark sensor sensing possible

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Page 104
Image 104
Sharp SF-1120, SF-1020 service manual Display range 8 ∼