Read Sharp MX-M160 / MX-M160D / MX-M160DK (serv.man8) User Guide / Operation Manual online
27
TROUBLESHOOTING
4
SCANNING PROBLEMS
Problem
Cause and solution
Page
Poor scanning
quality.
quality.
The document glass or the underside of the document
cover/SPF is dirty.
cover/SPF is dirty.
→ Clean regularly.
Operation manual (for
general information
and copier)
The original is smudged or blotchy.
→ Use a clean original.
–
You have not specified a suitable resolution.
→ Make sure that the resolution setting in the scanner driver is
appropriate for the original.
15
You are scanning a large area (for example an entire 11" x
17" or A3 document) at high resolution.
17" or A3 document) at high resolution.
→ If you attempt to scan a large area at high resolution and there is insufficient
memory in the machine to hold the scanned data, scanning will take place at
a lower resolution and the scanner driver will enhance the data to make up
for the lower resolution. However, the quality of the enhanced image will not
be as high as if scanning took place at the higher resolution.
To scan a ledger or A3 original in full color at 600 dpi without using
enhancement, the 256 MB memory option is required.
a lower resolution and the scanner driver will enhance the data to make up
for the lower resolution. However, the quality of the enhanced image will not
be as high as if scanning took place at the higher resolution.
To scan a ledger or A3 original in full color at 600 dpi without using
enhancement, the 256 MB memory option is required.
14
You have not specified a suitable value for the "B/W
Threshold" setting.
Threshold" setting.
→ If you are using a TWAIN-compliant application and are using
[White], [Red], [Green], or [Blue] for "Light Source" in the TWAIN
driver, make sure that the "B/W Threshold" setting is appropriate. A
larger threshold value makes your output darker, while a small
threshold value makes it lighter. To adjust the threshold
automatically, click the [Auto Threshold] button on the [Image] tab of
the "Custom Settings (or Professional)" screen.
driver, make sure that the "B/W Threshold" setting is appropriate. A
larger threshold value makes your output darker, while a small
threshold value makes it lighter. To adjust the threshold
automatically, click the [Auto Threshold] button on the [Image] tab of
the "Custom Settings (or Professional)" screen.
–
Poor scanning
quality.
quality.
The brightness and contrast settings are not suitable.
→ If you are scanning with a TWAIN-compliant application and the
resulting image has unsuitable brightness or contrast (for example it
is too bright), click the [Auto Brightness/Contrast Adjustment] button
on the [Color] tab of the "Custom Settings (or Professional)" screen.
You can also click the [Brightness/Contrast] button to adjust the
brightness and the contrast while viewing the scanned output image
on the screen. If you are scanning with a WIA-compliant application
or the "Scanner and Camera Wizard", click [Adjust the quality of the
scanned picture] or the [Custom settings] button and adjust the
brightness and contrast.
is too bright), click the [Auto Brightness/Contrast Adjustment] button
on the [Color] tab of the "Custom Settings (or Professional)" screen.
You can also click the [Brightness/Contrast] button to adjust the
brightness and the contrast while viewing the scanned output image
on the screen. If you are scanning with a WIA-compliant application
or the "Scanner and Camera Wizard", click [Adjust the quality of the
scanned picture] or the [Custom settings] button and adjust the
brightness and contrast.
–
[Quick Scan] has been selected.
→ If scanning is performed when [Quick Scan] has been selected in the
[Preference] tab of the "Custom Settings (or Professional)" of the
TWAIN driver, image quality may be degraded. This is because the
scanned data is transferred using JPEG compression. If image
quality is poor, then perform scanning again without selecting the
[Quick Scan] option. (By default [Quick Scan] is not selected.)
TWAIN driver, image quality may be degraded. This is because the
scanned data is transferred using JPEG compression. If image
quality is poor, then perform scanning again without selecting the
[Quick Scan] option. (By default [Quick Scan] is not selected.)
15
The original is not placed face up in the SPF or face down
on the document glass.
on the document glass.
→ Place the original face up in the SPF or face down on the document
glass.
Operation manual
(for general
information and
copier)
The original was not placed in the correct position.
→ Place the original correctly.
Operation manual
(for general
information and
copier)
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