HP 4300 Service Manual - Page 304

Table 42. Numerical printer messages (continued) Message Description Action Continued 49.XXXX PRINTER ERROR Continued Continued 11. Replace the DIMM or EIO device caused the error message. 12. Remember to reconnect all of the cables that connect the printer to the network or computer. 13. If this error message persists, replace the firmware DIMM. See "Firmware DIMM" on page 160. 14. Replace the formatter assembly. See "Formatter assembly" on page 161 49.24.02 PRINTER ERROR The printer has experienced a critical error. 1. Verify that the ribbon cables are fully seated in the connectors on the DC controller PCA. 2. Replace the power supply. See "Power supply" on page 188. 3. Replace the DC controller PCA. See "DC controller PCA" on page 181. 4. Replace the formatter assembly. See "Formatter assembly" on page 161. 50.X FUSER ERROR For help press A fuser error has occurred. X Description 1 low fuser temperature 2 fuser warmup service 3 fuser over temperature 4 faulty fuser 5 incorrect fuser is installed 6 open fuser circuit 1. Turn the printer off and allow it to cool down. 2. Verify that the correct model of fuser is installed. 3. Verify that the correct voltage fuser is installed. 4. Reinstall the fuser, and check the connection between the fuser and the printer. Replace the connector if it is damaged. 5. Replace the fuser. 6. Replace the DC controller PCA. See "DC controller PCA" on page 181. 7. Replace the power supply. See "Power supply" on page 188. 284 Troubleshooting Q2431-90912