Search found 801 matches

by grsbanks
Mon Aug 02, 2021 7:20 pm
Forum: Usage tips, tricks and problem reports
Topic: Reset after battery failure
Replies: 7
Views: 63

Re: Reset after battery failure

Weird...

A couple more questions to try and get to the bottom of this.

1) What happens if you remove the battery and power the DM42 by connecting it to a USB port?

2) What brand of battery did you put in the calculator?
by grsbanks
Mon Aug 02, 2021 6:44 pm
Forum: Usage tips, tricks and problem reports
Topic: Reset after battery failure
Replies: 7
Views: 63

Re: Reset after battery failure

Did the DM42 just show the production diagnostics screen when you put a new battery in or did you have to go into the SETUP to get there?

Have you tried simply pressing the RESET button through the hole on the back of the calculator?
by grsbanks
Mon Aug 02, 2021 6:23 pm
Forum: Usage tips, tricks and problem reports
Topic: Reset after battery failure
Replies: 7
Views: 63

Re: Reset after battery failure

Just to make sure, Exit + F6 means, "press and hold Exit, with it pressed down, press and release F6, then release Exit". Is this what you're doing?
by grsbanks
Sun Jul 04, 2021 9:59 pm
Forum: Hardware
Topic: Trying to update v21 firmware on 16L getting error
Replies: 2
Views: 123

Re: Trying to update v21 firmware on 16L getting error

Hi there. This is actually an RTFM question. "Pr Error" is normal on every Voyager unit (HP-10C, 11C, 12C, 15C, 16C) after a reset. The chances are your machine is now fully up to date. Turn it off, press and hold the "E" key while switching it on. You'll see the firmware version...
by grsbanks
Wed Jun 23, 2021 6:31 pm
Forum: DM41X
Topic: [SOLVED] Debugging printing to HP82240B
Replies: 22
Views: 911

Re: [SOLVED] Debugging printing to HP82240B

There is no polarity. The original PSU provides AC to the printer. That is then rectified and filtered inside the printe.
by grsbanks
Wed Jun 23, 2021 3:53 pm
Forum: DM41X
Topic: [SOLVED] Debugging printing to HP82240B
Replies: 22
Views: 911

Re: [SOLVED] Debugging printing to HP82240B

Does the printer have a label on it from another company? This printer was OEM'd by HP to a few other companies and sold under those labels, and one of them moved the IR window to the back side as the printer was installed in/on some other equipment where the front of the unit was not accessible, t...
by grsbanks
Wed Jun 16, 2021 11:41 am
Forum: DM41X
Topic: Negative Cube Roots
Replies: 5
Views: 343

Re: Negative Cube Roots

It calculates the \(n\)th root of \(x\) by computing \(e^{ln(x)/n}\)

If \(x\) is negative, it can't calculate \(ln(x)\), hence the "DATA ERROR".
by grsbanks
Sat Jun 12, 2021 2:23 pm
Forum: Hardware issues
Topic: Cracked bezel
Replies: 29
Views: 1537

Re: Cracked bezel

Drop me an e-mail at support@[you know the domain].
by grsbanks
Wed Jun 02, 2021 6:06 pm
Forum: DM42
Topic: DM42 versions and shipping question
Replies: 2
Views: 454

Re: DM42 versions and shipping question

Hi there. To answer your questions: 1) Yes. The unsold DM42 units with the older keyboard were removed from sale in September 2020 when the DM41X was released. From that point onwards, only DM42 units made with the same, improved keyboard as the new DM41X were sold and shipped. 2) Again, yes. Even i...
by grsbanks
Tue Jun 01, 2021 8:26 am
Forum: DM41X
Topic: Getting NAME ERR when I save program raw files
Replies: 67
Views: 10415

Re: Getting NAME ERR when I save program raw files

FWIW, this is covered in the manual. Para 6.2.4 specifically:

https://technical.swissmicros.com/dm41x ... ve_raw_pgm