Samsung SCX 6322DN Service Manual - Page 80
PC-Scan - scanner driver
UPC - 635753620658
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Troubleshooting 6.2.1.2 PC-Scan PROBLEM Scanning Error Defective image Quality Abnormal noise ITEMS TO BE CHECKED. HOW TO SOLVE • Check the printer cable installed. • Check how TWAIN driver is installed. • Check correct installation, and use standard IEEE1284 cable. • Remove any other scanner driver. • Check the printer port(Parallel). • 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 harness contact. • Check the IEEE1284 signal level. • 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. • Check the USB signal level. • Check shading profile. • If USB signal level is defective, replace Main PBA. • Remake shading profile in the tech mode. • Check the gap between original and scanner glass. • Check the Scanner Motor and any mechanical disturbance. • 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. • Check the motor driver in Driver PBA. • If any driver is defective, replace it. Samsung Electronics Service Manual 6-3