Xerox Phaser 3450 Service Manual

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Contents

Xerox Phaser 3450 Service Manual Manual pdf 77 page image

7-2TROUBLESHOOTINGService Manual7.1.3 Horizontal Black Band• Description 1. Dark or blurry horizontal stripes occur in the printing periodically.(They may not occur periodically.)Digital PrinterDigital PrinterDigital PrinterDigital PrinterDigital PrinterCheck and Cause Solution1. Bad contacts of the voltage terminals totoner cartridge.2. The rollers of toner cartridge may bestained.Charge roller = 38mmSupply roller = 45mmDevelop roller = 49mmTransfer roller = 57mm1. Clean each voltage terminal of the Charge,Supply, Develop and Transfer roller.(remove the toner particles and paper par-ticles)2. Clean the left Gear that has relativelysmall gap of the teeth in the OPC.3. If the malfunction persists, replace thetoner cartridge.7.1.4 Black/White Spot• Description 1. Dark or blurry black spots occur periodically in the printing.2. White spots occur periodically in the printing.Digital PrinterDigital PrinterDigital PrinterDigital PrinterDigital PrinterCheck and Cause Solution1. If dark or blurry black spots occur periodi-cally, the rollers in the Toner cartridgemay be contaminated with foreign matteor paper particles.( Charge roller : 38 mm intervalOPC drum : 95 mm interval)2. If faded areas or voids occur in a blackimage at intervals of 95 mm, or blackspots occur elsewhere, the OPC drumsurface is damaged.3. If a black image is partially broken, thetransfer voltage is abnormal or the trans-fer roller's life has expired.1. Run OPC cleaning Mode Print and run theSelf-test 2 or 3 times.2. In case of 95 mm interval unremovable in 1,cleanly remove foreign substances stuck onthe OPC location equivalent to black spotsand white spots with a dry duster.3. The transfer roller guarantees 10,000sheets printing. If the roller's life is expired,replace it.4. In case of 95 mm interval unremovable in 1,take measures as to replace the toner car-tridge and try to print out.5. Clean the inside of the set against the paperparticles and foreign matter in order not tocause the trouble.