MX-B200 (serv.man8). Operation Manual. - Sharp Copying Equipment User Guide / Operation Manual. Page 75

Any one of the 
alarm indicators 
(

) 

See "STATUS INDICATORS" to check the meaning of 
the alarm indicator, and take appropriate action.

The document glass or the underside of the document 
cover/SPF is dirty.
→ Clean regularly.

Original 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.

–

You have not specified a suitable value for the "B/W 
Threshold" setting.
→ If you are scanning with a TWAIN-compliant 

application, make sure that a suitable value is specified 
for the "B/W Threshold" setting. 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 "Professional" screen.

–

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 
"Colour" tab of the "Professional" screen. 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 in the screen that appears.

–

The original is not placed face up in the SPF or face 
down on the document glass.
→ Place the original face up in the SPF or face down on 

the document glass.

26, 27

The original was not placed in the correct position.
→ Place the original correctly.

26, 27