I mainly don't save the Laserjet <anything>
because no parts and they
don't run forever. If there was a way to extend life I didn't practice
it. Such as recharging the cartridges, etc.
What? I have restored an maintained a number of early LJs. Check eBay for parts and ink.
The newer ones are actually harder to maintain because of all the DRM in the toner
cartridges and poor build quality.