Code 5472: “lampcathode fan - voltage too low” (Error)

This error code is probably proceeded by the warning code: “lampcathode fan - voltage low”. The same troubleshooting tablecan be applied to.

Situation

Solution

Malfunction SMPS module. All other fans also report voltagelow error.

Replace the SMPS module.

Damaged insulation of the wire unit of the cathode fan.

Check the insulation of the wire unit of the cathode fan. Thecathode fan is located at the right side of the lamp house compartment

  1. Repair the insulation of the wire unit using shrink sleeve.

  2. If not repairable, replace the whole wire unit and/or fan.

Malfunction Fan & Motor Control board.

Replace the Fan & Motor Control board.

Malfunction Power Backplane (bad connection)

Replace the Power Backplane.