Samsung SCX4521F Service Manual - Page 124

Scanning Problems . Causes and Solutions, PC Scanning problems, Poor Quality of PC Scanned images

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Troubleshooting 6.8 Scanning Problems - Causes and Solutions 6.8.1 PC Scanning problems • Description Unable to scan using a PC. Check and Cause 1. Check the Cable (USB or Parallel) is properly connected and that the printer can print correctly. 2. Check that the driver is installed properly. 3. Check that the copy function operates normally. Solution 1. Reconnect the PC and printer, replace any faulty cables. If using a parallel cable, check that the parallel port is properly configured in the BIOS. 2. If printing is OK check that the Scan driver is also installed (Refer to User's Manual.) 3. If the copy function works, replace the Main PBA. If the copy function doesn't work, replace the CIS Ass'y and try again. 6.8.2 Poor Quality of PC Scanned images • Description The image PC scanned is not clear or bad. Check and Cause 1. Use TECH mode to carry out a shading test and examine the waveform printout. 2. Check if the resolution is set too low in PC Scan options. (Refer to User's Manual.) Solution 1. If the CIS waveform form is abnormal replace the CIS Ass'y. 2. Teach the user about scanner resolution - refer to the User Guide. Samsung Electronics Service Manual 6-29

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Troubleshooting
Samsung Electronics
Service Manual
6-29
6.8 Scanning Problems – Causes and Solutions
6.8.1
PC Scanning problems
• Description
Unable to scan using a PC.
Check and Cause
Solution
1. Check the Cable (USB or Parallel) is properly
connected and that the printer can print correctly.
2. Check that the driver is installed properly.
3. Check that the copy function operates normally.
1. Reconnect the PC and printer, replace any faulty
cables. If using a parallel cable, check that the par-
allel port is properly configured in the BIOS.
2. If printing is OK check that the Scan driver is also
installed (Refer to User's Manual.)
3. If the copy function works, replace the Main PBA.
If the copy function doesn't work, replace the CIS
Ass'y and try again.
6.8.2
Poor Quality of PC Scanned images
• Description
The image PC scanned is not clear or bad.
Check and Cause
Solution
1. Use TECH mode to carry out a shading test and
examine the waveform printout.
2. Check if the resolution is set too low in PC Scan
options. (Refer to User's Manual.)
1. If the CIS waveform form is abnormal replace the
CIS Ass'y.
2. Teach the user about scanner resolution – refer to
the User Guide.