Sharp MX-4100N Service Manual page 114

Display/Item
K COLOR PUSH:TEXT/
PRINTED PHOTO
L COLOR PUSH:TEXT
M COLOR PUSH:PRINTED
PHOTO
N COLOR
PUSH:PHOTOGRAPH
O COLOR PUSH:TEXT/
PHOTO
P COLOR PUSH:MAP
3) Enter the adjustment value with 10-key and press [OK] key.
When the adjustment value is increased, reproducibility of the
background and the low density image is increased. When the
adjustment value is decreased, reproducibility of the back-
ground and the low density image is decreased.
If a satisfactory result is not obtained, adjust by ADJ20D and
ADJ20E.
20-K Color copy text, line image edge gamma,
density adjustment / Text ⋅ Map mode
gamma, density adjustment
(Adjustment 1)
By changing Text/Printed Photo, Text/Photograph, automatic copy
mode Text, line image edge section gamma and the density, the
reproducibility of text and line profile can be varied optionally.
With this adjustment, the density and the thickness of fine text and
lines can be varied.
Check the result of this adjustment by text/printed photo copy mode
(manual).
This adjustment is required in the following cases.
* When the reproducibility of text and line copy image is to be
changed.
* U2 trouble has occurred.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
1) Enter the SIM 46-27 mode.
10-key
OK
Set
Content Default
value
Text print 1 - 9 3
(color PUSH)
Text (color PUSH) 1 - 9 3
Printed photo 1 - 9 5
(color PUSH)
Photograph 1 - 9 5
(color PUSH)
Text/Photograph 1 - 9 3
(color PUSH)
map (color PUSH) 1 - 9 5
MX-5001N ADJUSTMENTS 5 – 72
2) Select the mode to be adjusted with the scroll key.
Display/Item (Copy mode)
A BLACK TEXT Black character edge
(SLOPE) gamma skew
adjustment
B BLACK TEXT Black character edge
(INTERCEPT) density adjustment
C COLOR TEXT Color character edge
(SLOPE) gamma skew
adjustment
D COLOR TEXT Color character edge
(INTERCEPT) density adjustment
E ED TEXT Text/Map mode
(SLOPE) gamma adjustment
(Text/Map mode)
F ED TEXT Text/Map mode
(INTERCEPT) density adjustment
(Text/Map mode)
3) Enter the adjustment value with 10-key.
When the adjustment values of item A and C are changed, the
gamma at the line edge section is changed.
When the adjustment value is increased, the image contrast of
character edge and line edge is increased. When the adjust-
ment value is decreased, the image contrast of character and
line edge is decreased.
When the adjustment value of the adjustment item B and D are
increased, the image density at the line edge section is
increased, and vice versa.
4) Press [OK] key.
5) Press [Close] key to exit the simulation.
6) Make a copy in monochrome text/printed photo copy mode
(manual), check the copy.
When checking, use a copy of the document with a thin char-
acter and line image.
If a satisfactory result is not obtained, return to the SIM 46-27
mode and change the adjustment value.
Repeat the above procedures until a satisfactory result is
obtained.
Adjust
Content ment Default
range
1 - 99 50
1 - 99 50
1 - 99 50
1 - 99 50
1 - 99 50
1 - 99 50