Samsung SCX-5315F Series Service Manual page 30

4-4-5 MAINTENANCE
CLEAN DRUM
Use this feature to remove toner particles remaining in the OPC drum unit.
Use this feature when print quality falls or when marks or specks appear on the printout.
You should perform this feature several times until a clean printout appears.
The machine automatically pulls in a sheet of paper and prints out. Excess toner particles on the OPC drum
surface are fixed to the paper.
FLASH UPGRADE
This function is used to update the system Firmware. There are 2 methods Local and Remote.
More information can be found in the firmware upgrade section.
ADJUST SHADING
This option is used to test and check the functionality of the CCD (Charge Coupled Device). Use this when
poor quality scanning or copying is reported.
< Method >
1. Select the [ADJUST SHADING] in TECH MODE.
2. Push the SET UP button. The unit scans
a "white image" using the 'white bar'
3. After the scan, CCD SHADING PROFILE similar to that
shown will be printed out.
4. If the printed image is different to the image, if the lines
are significantly lower or higher, or if there are high or low
spots in the chart then the CCD is defective.
NOTICE : When you test the CCD, make
sure that the cover is closed."
ANSWER ON CNG
The function is to control the CNG TONE recognition times for entering receiving mode from the AUTO MODE
or ANS/FAX MODE.
Samsung Electronics
Troubleshooting
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