HP LaserJet 1010 Service Manual - Page 103

Fatal Errors, Check the ribbon cable between the formatter and ECU and all other connections.

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Fatal Errors If the printer displays all lights on solid and the error is not resolved by cycling the power, then a fatal error has occurred. The two identifiable errors are failed communication between the formatter and the engine and a failed fuser. If neither of these are identified using the following procedure, replace the printer. 1. Press and hold the Go button and the printer will display a secondary error pattern. 2. If the secondary error pattern is the Attention light on, the formatter and engine are not communicating. ● Check the ribbon cable between the formatter and ECU and all other connections. ● If error persists, replace the ECU. ● If error persists, replace the printer. 3. If the secondary error pattern is the Go and Ready lights on, the fuser (fixing assembly) has failed and must be replaced. ENWW Control Panel Lights 91

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Fatal Errors
If the printer displays all lights on solid and the error is not resolved by cycling the power,
then a fatal error has occurred. The two identifiable errors are failed communication between
the formatter and the engine and a failed fuser. If neither of these are identified using the
following procedure, replace the printer.
1.
Press and hold the Go button and the printer will display a secondary error pattern.
2.
If the secondary error pattern is the Attention light on, the formatter and engine are not
communicating.
●
Check the ribbon cable between the formatter and ECU and all other connections.
●
If error persists, replace the ECU.
●
If error persists, replace the printer.
3.
If the secondary error pattern is the Go and Ready lights on, the fuser (fixing assembly)
has failed and must be replaced.
ENWW
Control Panel Lights
91