Sharp AL-2030 Service Manual

AL-2040CS ADJUSTMENTS 9 - 8
<Adjustment specification>
7. Automatic black level correction
a. Cases when the adjustment is required
1) When the main PWB is replaced.
2) When the EEPROM in the main PWB is replaced.
3) When "U2" trouble occurs.
4) When repairing or replacing the optical section.
b. Adjustment procedure
Used to acquire the black level target value used for the black level
adjustment of white balance.
When SIM 63-02 is executed, the current correction value is dis-
played in 3 digits of 12bit hexadecimal number.
Place the gray gradation chart (UKOG-0162FCZZ) used as the
correction document so that the density 10 (black side) comes on
the left side and that the chart is upside down at the center of the
plate left center.
When START key is pressed, the mirror base unit scans the chart
and calculates the correction value.
After completion of correction, the corrected value is displayed on
the display section.
∗ Default: 0
∗ If the value is set to the default, operation is made with 0x60.
Adjustment mode
Spec
value
SIM Set value
Setting
range
Sub scanning
direction
magnification
ratio (SPF mode)
At normal:
±1.0%
48-5 Add 1:
0.1% increase
Reduce 1:
0.1% decrease
1 – 99
Chart back surface
10

Sharp AL-2030 Specifications

General

Print technology	Laser
Maximum resolution	600 x 600 DPI
Print speed (black, normal quality, A4/US Letter)	16 ppm
Copy speed (black, normal quality, A4)	20 cpm
Multi-Purpose tray	Yes
Total input capacity	250 sheets
Auto document feeder (ADF) input capacity	50 sheets
Power requirements	120 VAC +/- 10 %; 60 Hz +/- 2 %
All-in-one functions	Copy, Scan
Compatible operating systems	Windows 98, Me, 2000, XP, Vista
Market positioning	Business