Posts: 4,027
Threads: 172
Joined: Aug 2005
Hi, Frank;
I was never told about these external jacks as well, but I wonder about the color: should they not be a way to power the printer from the outside? Blue for negative, red for positive? Have you measured for existing voltage across these jacks?
Just a guess.
Best regards.
Luiz (Brazil)
Posts: 1,841
Threads: 54
Joined: Jul 2005
Hi,
maybe you meant the different case layouts of the printer?
The older ones used to have the LED's look out of the case, the newer ones have the LED's hidden behind the panel overlay. Someone wrote here that the reason for this change was to get a better shielding against high frequency emissions from inside the printer.
And then there are the printers with the 'brighter' (greener) case. I'm not sure if the 43A was ever made with the green case.
Regards,
Raymond
Posts: 182
Threads: 9
Joined: Jun 2013
These jacks were custom added to connect a power supply. I have once acquired a 82143A with a similar modification. Maybe the orignial power supply failed and the owner wanted to save the money for a new (original) one...
Cheers, Victor