HP Color LaserJet 4700, 4730 MFP, CP4005, and CM4730 MFP Series Yellow Color Partially Missing

Problem
Customers have reported the yellow cartridge not printing properly with a fade from right to left (seen below on the Yellow PQ Troubleshooting page) due to a problem with the yellow toner engaging or disengaging.

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Solution
Check the paper feed assembly / Paper Input Unit (PIU) cable cover, being careful to route the cables properly. Cover must not sit on top of any cables; rather, it should be seated firmly at the bottom of the cartridge bay. This cover can interfere with the alienation of the left-side of the yellow cartridge.

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About the Author
Printer Tech Tip is contributed by Laser Pros (www.laserpros.com). Email any questions to marketing@laserpros.com.