08/2012
2-11
WorkCentre 5021/5019
004-345
Status Indicator RAPs
Initial Issue
004-345 HVPS Communication Error
BSD-ON:CH9.2
Communication failure between the ESS/MCU PWB and the HVPS was detected.
Cause/Action
1. Turn the power OFF and ON.
2. Turn OFF the power and check the connection between the HVPS J500 and the ESS/
MCU PWB J402 for open circuit, short circuit, and poor contact.
3. If no problem is found, replace the following parts in sequence:
• HVPS (PL 18.1)
• ESS/MCU PWB (PL 18.1)
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