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SC4xx: Bias Leak

Code

Level

Details

491

D

Bias Leak

A bias leak has occurred for the drum charge, development charge, or transfer charge.

PWM signals are sampled at 20 ms intervals. This SC is issued if 10 PWM samplings within 200 ms are abnormal.

  • The HVP harness is loose, broken, or defective.

  • The HVP board is defective.

  • The AIO terminal is defective.

  • Cycle the power OFF/ON.

  • Check all the harness connections of the HVP.

  • Check the spring-loaded AIO terminal installation behind the HVP.

  • Replace the HVP.
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