Overcurrent/overvoltage

There are two overvoltage devices in this printer:

•Fuse F101 provides overcurrent protection for the fusing-system circuitry. Checking or replacing the fuse requires the removal of the ECU. Fuse F102 (found only on 110 V units) provides overcurrent protection to the printer DC power supply circuitry.

•In addition, the +24 VDC, +3.3 VDC, and +5 VDC power circuitry contains an overcurrent protection circuit that automatically shuts off the output voltage when an overcurrent condition occurs as a result of a short or an abnormal voltage on the load side.

136 Chapter 3 – Power supply

EN