Dead Phaser 7300

[techwrtr2]

It's dead. power supply checks ok, tried a different engine board. Appear to ahve continuity through the toner sensor.

Died after clearing a paper jam. Cleared the jam, close the lid and it shut down.

Ideas other than tossing it out the window?

 

[CULTOFLON]

In my experience I have seen the NVRAM cause a problem like this. One way to check if it is the IP board or NVRAM is to pull the IP board out and turn the printer on to see if it starts up, you can also look at the display and see if any thing shows (it won't be words). This will sometimes reset the machine and allow it to start up after the IP board is reinstalled.

 

[techwrtr2]

If you are refering to the formatter board, that was one of the first things I tried.

 

[ELECTRICWARRIOR]

any other indications? control panel? or health LED blinking?

 

[techwrtr2]

Totally dead. No fans, no health LED, no display. I can make the power supply come up by doing a jumperwire bypass, and it produces the correct voltages. But when doing this test, I keep the engine board out of the power loop.

At the moment I'm thinking I may have missed something when I was checking fuses on the engine board. I *thought* they all checked ok, but can't swear to it.