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Service menu unlock code? 1

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Auger282

Auger282

MIS
Sep 27, 2003
978
I'm looking for the unlock code to get into the service menu for a HP LaserJet 2420 printer.

Any help is greatly appreciated.
 
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Hey hpwizard, that was my next idea, the 4 is usually needed on the '50 units.
 
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