Canon FAX-L350 Service Manual

Also see for FAX-L350: Simplified guide Service manual

Contents

Canon FAX-L350 Service Manual Manual pdf 132 page image

3-21FAX-L350 Chapter 3: Maintenance and Service• LightSolutions: (1) Remove the toner cartridge and shake it lightly five or six times.(2) Verify that user setting “ECONOMY PRT” is not “ON”.(3) Replace the toner cartridge.(4) Open the front cover during printing, and remove the toner cartridge. Open thecartridge drum cover shutter manually, and check whether the toner image onthe photosensitive drum is transferred onto the paper. If it is transferred, go toitem (7). If not, go the following step.(5) Clean the transfer bias contact and the transfer charging roller shaft contact.(6) Replace the transfer charging roller.(7) Clean the developing bias contact and the toner cartridge contact.(8) Replace the PCNT board.(9) Replace the LASER/scanner section.(10) Replace the SCNT board.• DarkSolutions: (1) Verify that user setting “ECONOMY PRT” is not “OFF”.(2) Clean the drum ground contact and the toner cartridge contact(3) Clean the primary charging contact and the toner cartridge contact.(4) Replace the LASER/scanner section.(5) Replace the SCNT board.• Completely blankSolutions: (1) Clean the developing bias contact and the toner cartridge contact.(2) Check whether the projection for opening and closing the LASER shutter on thetoner cartridge is damaged.(3) Check the voltage connector (MCNT : J503/J5, SCNT : J501/J3) for the high-voltage power circuit.(4) Replace the PCNT board.(5) Replace the LASER/scanner section.(6) Replace the SCNT board.• All blackSolutions: (1) Replace the toner cartridge.(2) Clean the primary charging contact and the toner cartridge contact.(3) Replace the PCNT board.(4) Replace the LASER/scanner section.(5) Replace the SCNT board.• DotsSolutions: (1) Clean the static charge eliminator in the toner transfer section.(2) Check the static charge eliminator contact.(3) Clean the transfer charging roller.(4) Replace the transfer charging roller.