HP LaserJet 1010

• Code: 01
• Display: Go: Cycling
  Ready: Cycling
  Attention: Cycling
• Description: Initialization/startup
  During Initialization/startup, the lights cycle one after another in a front-to-back pattern (the "landing lights" pattern). Pressing buttons has no effect when this is the printer status.

• Code: 02
• Display: Go: Cycling
  Ready:Cycling
  Attention: Cycling
• Description: Reconfig initialization
  When a power-on function is activated (for example, during a cold reset or NVRAM initialization) the lights cycle as in the startup state. Pressing buttons has no effect when this is the printer status.

• Code: 03
• Display: Go: OFF
  Ready: ON
  Attention: OFF
• Description: Ready (The printer is ready, with no job activity.)
  In the Ready state, the READY light is on and the GO and ATTENTION lights are off. In this state, the printer has no errors and is ready to receive data. Pressing the GO button prints a demo page.

• Code: 04
• Display: Go: OFF
  Ready: Blinking
  Attention: OFF
• Description: Processing data (The printer is processing or receiving data.)
  During data processing, the READY light is blinking and the GO and ATTENTION lights are off. Pressing the GO button cancels the current job without printing another page. The printer returns to the Ready state after the job has been canceled.

• Code: 05
• Display: Go: Cycling
  Ready: Cycling
  Attention: Cycling
• Description: Job cancellation
  During job-cancellation, all of the lights cycle. Pressing the GO button has no effect. After the job-cancel process is complete, the printer returns to the Ready state.

• Code: 06
• Display: Go: ON
  Ready: OFF
  Attention: Blinking
• Description: Continuable error
  When a continuable error exists, the GO light is on, the READY light is off, and the ATTENTION light is blinking. Press the GO button to attempt to recover from the error and continue printing. If the printer recovers from the error, it will start to process data and will complete the job. If the recovery fails, the device will return to the continuable-error state. The following actions and events cause continuable errors:
  - Manual feeding 
  - Out of paper for the specified tray 
  - General continuable error 
  - Memory overflow (error 20) or memory full (PCL only)
  - Temporary engine error (41.x errors)
  - I/O error (22 error) / buffer flow error (only with parallel connections)
  - I/O data error (40 error) (bad connection) (only with parallel connections)
  - Memory configuration error 
  - Personality/job-related error
  - Fuser high temperature (50.011 error)