HP Color LaserJet 8500 Service Manual - Page 375

Table 41. Numbered printer messages (continued) 49. ERROR CYCLE POWER Event log message: 49. Description: Indicates that a software or data communications error has occurred, or corrupt data was sent to the printer. This can be caused during times of high network traffic or by incomplete or out-of-bounds print data. This error can also occur because of defective EIO devices. Action: 1 Verify that all cables are connected. 2 Turn the printer off and on to reset the printer. 3 Remove all EIO cards and reinstall them to ensure they are seated correctly. 4 If using a parallel connection, verify that the cable is IEEE-1284 compliant. 5 If the error occurs frequently, try adding more memory. 50.1 FUSER ERROR CYCLE POWER Event log message: 50.00.01 Description: Action: Indicates that a low temperature error has occurred 1 Verify the fuser is completely seated inside the in the fuser. printer. 2 Turn the printer off and on to reset the printer. 3 Turn the printer off and remove the fuser. Measure the resistance across fuser connectors J26F-A4 (FXTHU) and J26F-A3 (GND). If it is not in the range of 250 kOhms to 600 kOhms (room temperature), check the wiring from the connector J222 on the controller board up to the upper thermistor. If the wiring is normal, replace the fuser kit. 4 Reconnect connector J222 on the controller board and connector J26 on the fuser. 5 Replace the fuser kit. 6 Replace the power supply. 50.2 FUSER ERROR CYCLE POWER Event log message: 50.00.02 Description: Indicates that a warmup error has occurred in the fuser. Action: 1 Turn the printer off and on to reset the printer. 2 Verify the fuser is completely seated inside the printer. 3 Check for media jams in the fuser. 4 Replace the fuser kit. EN Printer message troubleshooting 373