HP — LED status lights

Table 9. Status lights messages (continued) Message Possible causes Solutions The Ready and Attention lights are illuminated. The printer is in a fatal error state. A fatal error message appears on the computer screen. Follow the directions in the message to clear the error. Possible fatal errors are:  Fuser error  Laser/scanner error  ECU communication error  Formatter RAM or ROM error  Scan buffer error  Dynamic RAM controller error  General fatal error  Miscellaneous hardware error Note The cable pod downloads the firmware from the computer each time you turn on the printer.

If the cable pod does not receive the firmware download from the computer, only the ready and fatal-error light patterns can appear. Hint The status lights can only display information about one printer state at a time. The status lights display printer status information in the following order: fatal errors, intervention-required error, continuable error, and processing job. Q1342-90910 Errors 69