HP 46 repair

[AndiGer]

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.