Samsung SCX-5312F Service Manual

Also see for Office Master SCX-5312F: Manual Driver manual Driver guide Product guide Manual Del Usuario

Contents

TroubleshootingSamsung Electronics 4-15It is needed in the development progress. Service person doesn't need to use it.4-6 Troubleshooting4-6-1 Scanner4-6-1-1 COPYPROBLEM ITEMS TO BE CHECKED. HOW TO SOLVEWhite copy • Check the Scan-Cover open. • Room light can transit a thin original.• Check shading profile. • Remake shading profile in the tech mode.• Check white/black reference voltage inMain PBA.• Replace U16 if it is defective.- U16-97 = 2.5V - U16-98 = 3.3V- U16-99 = 1.5V• Check turning the CCD Lamp on whenoperating.• If the CCD is defective, replace it.- CN3-19 is 5.8V when white original copy-ing for R, B and 3.5V for G.Black copy • Check the CCD problem in Main PBA. • Check the CCD harness contact.• Check shading profile. • Remake shading profile in the tech mode.• Check the CCD problem in Main PBA. • If the CCD is defective, replace it.- Cn3-19 is 7.3V when idle for R, B, and 5Vfor G.Defective image quality • Check shading profile. • Remake shading profile in the tech mode.• Check the gap between original and scan-ner glass.• The gap above 0.5mm can cause ablurred image.• Check printing quality. • See “Print” troubleshooting.Abnormal noise • Check the Scanner Motor and anymechanical disturbance.• Check the right position of the ScannerMotor, and check the any mechanical dis-turbance in the CCD carriaging part.• Check the Motor Driver in Driver PBA. • If any driver is defective, replace it.- U55-1 or U55-15 = 0V to 24V swing signalwhen operating.