Critical error messages Critical error messages may indicate some kind of failure. Cycling the power may fix the problem. If a critical error persists, the product may require service. Table 17. Critical error messages Message Cause Solution 50 Fuser Error The product has experienced an internal hardware error. Disconnect the power cable from the product, wait at least 20 minutes, then reconnect the power cable and wait for the product to initialize. Check the cabling connections to the heating element. Perform the heating element check (see page 203). If the error persists, replace the heating element. If, after replacing the heating element, the error persists, replace the ECU.
51 Laser Error The product has experienced an internal hardware error. Disconnect the power cable from the product, wait at least 30 seconds, then reconnect the power cable and wait for the product to initialize. Check the cabling connections to the laser scanner assembly. Try connecting the product to a different power source or surge protector. If the error persists, replace the laser scanner assembly. 52 Scanner Error The product has experienced an internal hardware error. Disconnect the power cable from the product, wait at least 30 seconds, then reconnect the power cable and wait for the product to initialize. Try connecting the product to a different power source or surge protector.
If the error persists, replace the laser scanner assembly. 79 Error PowerOff>PowerOn The product has experienced an internal firmware error. Disconnect the power cable from the product, wait at least 30 seconds, then reconnect the power cable and wait for the product to initialize. If the error persists, upgrade the firmware (page 207). EN Errors 185