Samsung SCX 6322DN - B/W Laser - All-in-One Service Manual page 80

6.2.1.2 PC-Scan
PROBLEM
Scanning Error
Defective image
Quality
Abnormal noise
Samsung Electronics
ITEMS TO BE CHECKED.
• Check the printer cable installed.
• Check how TWAIN driver is installed.
• Check the printer port(Parallel).
• Check harness contact.
• Check the IEEE1284 signal level.
• Check the USB signal level.
• Check shading profile.
• Check the gap between original and scanner glass.
• Check the Scanner Motor and any mechanical
disturbance.
• Check the motor driver in Driver PBA.
HOW TO SOLVE
• Check correct installation, and use standard
IEEE1284 cable.
• Remove any other scanner driver.
• Reboot after reinstallation of the TWAIN
driver.
• Check the parallel-port-related items in the
CMOS Setup.
As a printer port, Select ECP among
SPP(Normal), ECP, and EPP
modes(increase print-ing speed)
• Check CN12 contact in Main PBA
• If any signal level is defective, replace
Driver PBA.
Main PBA = 0.8V to 2.4V TTL signal.
• Otherwise, replace Main PBA.
• If USB signal level is defective, replace
Main PBA.
• Remake shading profile in the tech mode.
• The gap above 0.5mm can cause a
blurred image.
• Check the right position of the Scanner
Motor, and check the any mechanical
disturbance in the CCD carriaging part.
• If any driver is defective, replace it.
Service Manual
Troubleshooting
6-3