The Museum of HP Calculators

HP Forum Archive 14

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82143A printer help
Message #1 Posted by Mike H on 21 July 2004, 9:47 a.m.

Hello all, I purchased a used 82143A printer for my 41C. The print out fades to the left. That is, when 12345678 is printed, the 123 are barely visible, 4 and 5 are faded, 678 are the darkest. Any ideas? Thanks Mike H 1111

      
Re: 82143A printer help
Message #2 Posted by Randy Sloyer on 21 July 2004, 1:17 p.m.,
in response to message #1 by Mike H

Chances are it's a bad battery... They're real power pigs and you absolutely need a good battery to avoid this and other strange behaviours. Put a scope on the battery - you'll see the voltage drop as the head starts moving, the longer it runs, the lower the voltage, the dimmer the printing.

      
Re: 82143A printer help
Message #3 Posted by David Smith on 21 July 2004, 5:22 p.m.,
in response to message #1 by Mike H

The platen that backs up the paper may be out of position. The platen has a groove on the back of it that rests on a ridge in the print mechanism. It is basically held in place with springs at each end.

            
It was the battery, thanks (NT)
Message #4 Posted by Mike H on 21 July 2004, 5:49 p.m.,
in response to message #3 by David Smith

Works Great

Mike H


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