Service manual

AL-1651CS ADJUSTMENTS 9 - 4
C. Necessary tool for copy density adjustment
• One of the following test charts:
UKOG-0162FCZZ, UKOG-0089CSZZ, KODAK GRAY SCALE
• B4 (14" x 8 1/2") white paper
• The user program AE setting should be "3."
Test chart comparison table
D. Features of copy density adjustment
For the copy density adjustment, the image data shift function provided
in the image process LSI is used.
List of the adjustment modes
E. Copy density adjustment procedure
The copy density can be adjusted in 300dpi or in 600dpi.
For selection of modes, use the copy mode select key.
(1) Test chart (UKOG-0162FCZZ) setting
1) Place the test chart so that its edge is aligned with the A4 (Letter)
reference line on the document table. Then place a A4 (14" x
8 1/2") white paper on the test chart and close the document cover.
(2) Perform the adjustment in each mode.
1) Execute TC 46-01 (300dpi). To adjust in 600dpi, execute TC 46-
02.
2) Select the mode to be adjusted with the exposure mode select key.
Set the exposure level to 3 (center) for all adjustment. (Except for
the auto mode.)
3) Make a copy.
Check the adjustment level (shown in the above table) of the
exposure test chart (Sharp Gray Scale).
(When too bright): Decrease the value displayed on the copy quantity
display.
(When too dark): Increase the value displayed on the copy quantity
display.
* The value can be set in the range of 1 - 99.
UKOG-
0162FCZZ
DENSITY
No.
12345678910W
UKOG-
0089CSZZ
DENSITY
No.
0.1 0.2 0.3 0.5 1.9 0
KODAK
GRAY
SCALE
123419A
Auto Mode Brightness 1 step only
Manual Mode Brightness 5 steps. Adjustment of only the center
brightness is made.
Photo Mode Brightness 5 steps. Adjustment of only the center
brightness is made.
Manual T/S
mode
Brightness 5 steps. Adjustment of only the center
brightness is made.
T/S Auto mode Brightness 1 step only
Main code Sub code Resolution for copy density adjustment
46
01 300dpi
02 600dpi
1 10 W 23456789
White paper
Test chart
Test chart
Adjustment
mode
Display
item
LED
Sharp gray chart
adjustment level
Auto mode AE COPY mode lamp "3" is slightly
copied.
Text mode TEXT PRINT mode lamp "3" is slightly
copied.
Photo mode PHOTO SCAN mode lamp "3" is slightly
copied.
Text T/S mode TSTXT PRINT mode lamp
SCAN mode lamp
"3" is slightly
copied.
Auto T/S mode TSAE COPY mode lamp
SCAN mode lamp
"3" is slightly
copied.
Sharp Gray Scale adjustment level
Non toner
save mode
Toner save
mode
(2) Mode select key
TEXT
| | | | |
(1) Exposure mode, level display
1 10 W 23456789
Slightly copied.
Not copied.
1 10 W 23456789
Slightly copied.
Not copied.