HP 3015 Service Manual - Page 220

Table 6-2. Critical error messages (continued) Control panel message Event log Description error message 51 Laser Error None The product has experienced an internal hardware error. 52 Scanner Error None The product has experienced an internal hardware error. 79 Error Turn off then on None The product has experienced an internal firmware error. Recommended action Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power 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. HP LaserJet 3015: see, Scanner assembly. HP LaserJet 3020 and 3030: see, Scanner assembly. Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the product to initialize. Make sure that the flat, flexible cables (FFCs) are properly connected on the formatter and on the laser/scanner. Check the FFC connection between the formatter and the scanner. Note Do not bend or fold the FFCs during the removal or reinstallation process. Try connecting the product to a different power source or surge protector. If the error persists, replace the laser scanner assembly. See Laser/scanner assembly. Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the product to initialize. HP LaserJet 3020 and 3030 only: update the firmware. If the error persists, replace the formatter. See Formatter and line interface unit (LIU). 202 Chapter 6 Troubleshooting ENWW