HP 42S printer annunciator


I have a question / problem. Any time I execute a shifted key other than math operations, the print icon comes on the screen. The icon does not go off if I use the "POFF" command. It only goes off when I key the shift print followed by the "PRsummation" selection. Then I get a "Printing Is Disabled" message.
But the next time I key a shifted command like clear, it's back again.

Help would be appreciated.




I'd guess your HP42S is set to TRACE mode, but the annunciator would go off by itself after printing. Have you placed an HP82240A or B in front of it to "see" if there's anything actually being sent to the printer?

Also, have you considered a memory clearing (Memory Lost) procedure? I mean, if you don't have it filled with long programs or important data (all data and programs are iomportant, but if they can be keyed back in, then it's a matter of having the time and pacience...), a clearing procedure may restore original condition. The HP42S has no external access to a hardware reset, but the [EXIT]/[SIGMA+]/[XEQ] should be enough. If not, short circuiting the battery terminals (remove batteries first) for five to ten seconds would also be fine. Of course, if you want to give it a try. This is just a guess, I'm not sure if the memory clearing will also solve the problem. BUT if it doesn't, I also cannot think of anything else but IC terminals with external short circuit (any sort of durt) or a faulty IC.

I wish I could help more.

Luiz (Brazil)



I had removed the batteries for over two hours, then replaced them without any change. The exit/sigma/xeq did solve the problem. Thank you very much. I thought that leaving the batteries out of the calculator for two hours should reset it but obviously not. Thanks again, I really appreciate it.


Possibly Related Threads...
Thread Author Replies Views Last Post
  42s questions and 42s vs 35s snaggs 13 2,364 09-19-2011, 02:44 AM
Last Post: snaggs
  Screen comparison and annunciator question Marcus von Cube, Germany 17 1,945 03-23-2009, 02:03 PM
Last Post: Marcus von Cube, Germany
  Misbehaving 42s Multirow Menu Annunciator? Dallas Osborne 4 670 02-26-2008, 05:00 PM
Last Post: Dallas Osborne
  Thermal Printer Paper for 82143A Printer? Gordon Hamachi 1 527 02-03-2008, 03:05 PM
Last Post: Randy
  unexpected annunciator Bram 0 311 09-28-2006, 11:02 AM
Last Post: Bram
  Hourglass and Annunciator won't shut off Rick 10 1,058 03-16-2006, 02:01 PM
Last Post: Rick
  HP-42S with HP-82240B Printer Joe D. 9 1,112 11-02-2005, 01:47 PM
Last Post: Joe D.
  Unknoun 'Hex' Annunciator on HP10b Raul Leslie C. 4 698 10-03-2005, 08:35 AM
Last Post: Randy
  What is that annunciator? (33S) Tizedes Csaba 7 928 10-08-2003, 01:06 PM
Last Post: JaSon
  Thermal Printer 82143 -Problems to operate the printer- Martin Wahlich 4 781 12-07-2002, 04:01 PM
Last Post: Martin Wahlich

Forum Jump: