Repairing a HP41 Printer?



#2

I finally am running my printer, but the paper doesn't advance enough and it prints ontop of the old. If I click Paper Advance 3 times it will print underneath, clicking 4 times gives alittle more space. Using original HP paper that came in the package with the printer still in its original 6 roll HP box.

Does not matter if I am plugged in or just running on batteries, as it does the same thing.

Any ideas?

Thank you.

Dimitri


#3

Paper advance rollers are probably flat spotted. Sometimes you can work them back into round, but usually they have to rebuilt.

#4

Hi;

there are two small springs, in both left and right tips of the cog that pulls the paper, that control the pressure made over the printed paper. Are they in place? Also the rubber-like (kind of a polymer) rings in the same cog may be either contaminated (dirty) or wear. Should check it.

I also have a printer that does not pull the paper because the rubber belt that connects the motor pulley to the cog mentioned above is loose and it slips.

Cheers.

Luiz (Brazil)

#5

I think Geoff Quickfall's calculator repair book will cover this. I have a busted printer for the 41 also, as well as a card reader with gummy rollers. I'm planning to get Geoff's book when he's done and trying to repair them myself.

#6

Thank you guys. I was wondering if you had any dis assembly tips.

Dimitri


Possibly Related Threads…
Thread Author Replies Views Last Post
  Repairing HP 65 Michae Altmann 5 2,139 03-15-2013, 04:13 AM
Last Post: Joel Setton (France)
  [41CL] Repairing an image in Flash Monte Dalrymple 0 931 01-24-2013, 07:01 PM
Last Post: Monte Dalrymple
  Book on repairing HP calculators? Dave F 24 6,167 11-23-2012, 06:46 AM
Last Post: Bart (UK)
  HP-25C Repairing aj04062 11 3,291 10-31-2011, 01:11 PM
Last Post: Randy
  Repairing HP 41C screw posts Fouad M. Kaadou 7 2,424 09-25-2011, 08:19 PM
Last Post: Randy
  The week of repairing calculators David Ramsey 6 2,129 08-25-2011, 12:15 PM
Last Post: David Ramsey
  Repairing a cracked Spice case Jeff Kearns 3 1,576 04-20-2011, 07:27 PM
Last Post: Jose Poyan
  Looking for TTF font for HP41 Printer Output Egan Ford 1 1,068 03-05-2011, 08:29 PM
Last Post: Gerson W. Barbosa
  Repairing an HP33E with springs Alberto Fenini 0 997 02-26-2011, 09:44 AM
Last Post: Alberto Fenini
  Repairing a 82022B charger (with P.S. to Geoff Quickfall) Karl-Ludwig Butte 3 1,363 02-23-2011, 11:44 AM
Last Post: Karl-Ludwig Butte

Forum Jump: