HP Laserjet 1320 not working showing LED status pattern not mentioned in user manual

[Faridurrehman]

My HP Laserjet 1320 was working fine when I last turned it off around a week ago. Yesterday when I turend on my printer the motor is spnning in the start as normal but the printer is not printing any document. The Attention and Ready leds are solid Orange and Green while Go button led is blinking I tried pressing pressing Go and Cancel button several times but nothing happens. The status of the leds remain same. I also tried unplugging every thing and tried turning it on while pressing Go button to reset the printer. But nothing works.

I tried Engine test by pressing a small button under the Left panel cover it performs ok an printed horizontal lines on paper. 

Please suggest me what to do to repair the printer at home if possible or atleast understand where the problem lies.

[Valsimot · Accepted solution]

If the engine test works you need to replace the mainboard ( formatter).

https://www.youtube.com/watch?v=eBILhCrF5Oo 

[Faridurrehman]

Thanks for your reply. I have changed the formatter board and now the printer is working fine now.🤗