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HP 46 repair
04-30-2020, 01:48 PM (This post was last modified: 04-30-2020 03:20 PM by AndiGer.)
Post: #34
RE: HP 46 repair
In several steps I did it ... :-)

The printer seams to be a "version 2" compared to the printer repair manual contained on the museum DVD as it contains a Hall generator, only 2 solenoids (or is inductors the right word?) and one single PCB.

I removed the PCB from the printer and examined it. As the PCB is built symmetric in some parts the values the both (mounted) C945 transistors gave were suspicious.
After I replaced those 2 transistors I got the printer back spinning! :-) - Although the original transistors measure good values.
The motor has 6 different positions when in rest. Sometimes it doesn't start from one of the 6 positions. In this case I must help the motor to start by slightly rotating the print drum below the paper. As I know that I can always get the calculator working.
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Messages In This Thread
HP 46 repair - Geoff Quickfall - 03-10-2019, 04:20 AM
RE: H 46 repair - Geoff Quickfall - 03-10-2019, 04:23 AM
RE: HP-46 repair - Dieter - 03-10-2019, 03:42 PM
RE: HP 46 repair - Geoff Quickfall - 03-10-2019, 05:21 PM
RE: HP 46 repair - BobVA - 03-10-2019, 05:30 PM
RE: HP 46 repair - Maximilian Hohmann - 03-10-2019, 05:43 PM
RE: HP 46 repair - Geoff Quickfall - 03-10-2019, 07:46 PM
RE: HP 46 repair - BobVA - 04-12-2019, 03:08 PM
RE: HP 46 repair - AndiGer - 04-12-2019, 04:02 PM
RE: HP 46 repair - Geoff Quickfall - 04-12-2019, 05:55 PM
RE: HP 46 repair - AndiGer - 04-12-2019, 07:15 PM
RE: HP 46 repair - AndiGer - 04-15-2019, 08:27 PM
RE: HP 46 repair - teenix - 04-15-2019, 10:45 PM
RE: HP 46 repair - vassilisprevelakis - 05-02-2019, 11:03 PM
RE: HP 46 repair - AndiGer - 04-19-2019, 08:42 PM
RE: HP 46 repair - AndiGer - 04-26-2019, 04:31 PM
RE: HP 46 repair - AndiGer - 04-27-2019, 05:18 PM
RE: HP 46 repair - Geoff Quickfall - 04-27-2019, 07:06 PM
RE: HP 46 repair - AndiGer - 04-28-2019, 10:12 AM
RE: HP 46 repair - Geoff Quickfall - 04-28-2019, 05:43 PM
RE: HP 46 repair - AndiGer - 04-28-2019, 06:11 PM
RE: HP 46 repair - AndiGer - 05-03-2019, 08:54 AM
RE: HP 46 repair - vassilisprevelakis - 05-04-2019, 12:53 AM
RE: HP 46 repair - AndiGer - 05-05-2019, 04:37 PM
RE: HP 46 repair - vassilisprevelakis - 05-15-2019, 10:43 PM
RE: HP 46 repair - Geoff Quickfall - 05-07-2019, 07:26 PM
RE: HP 46 repair - AndiGer - 05-07-2019, 07:40 PM
RE: HP 46 repair - AndiGer - 05-12-2019, 11:16 AM
RE: HP 46 repair - Geoff Quickfall - 05-16-2019, 05:56 AM
RE: HP 46 repair - BobVA - 05-16-2019, 09:45 PM
RE: HP 46 printer repair - AndiGer - 05-26-2019, 04:38 PM
RE: HP 46 repair - AndiGer - 04-30-2020 01:48 PM
RE: HP 46 repair - tsb - 05-16-2020, 03:15 PM
RE: HP 46 repair - AndiGer - 05-16-2020, 08:07 PM



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