Dominique, I just want to say how impressed I am with your work here, as well as the way you're documenting it. This is fantastic stuff!
There's a lot of emails on this thread for me to catch up on from the past month. But if I have one request, it's that you post any additional pics you might have on the Entrex terminal. This is what has really drawn me into this chapter of your project. Keep up the great work! -AJ http://Entrex480.blogspot.com (badly in need of updating) http://Point4iris.com On Sat, Aug 19, 2017 at 12:50 PM, Curious Marc via cctalk < cctalk@classiccmp.org> wrote: > A straightforward linear supply. We should be able to get that puppy > working. Looks like you have two of the same thing on G2, two +5V supplies. > You could take advantage of that and compare voltages of one against the > other at several points. You coukd also monitor the voltage on the non > regulated side of the power transistors, if that crashes too, it's more > likely it's a problem in the caps or the rectifier diodes. If it crashes > after, transistors or regulation circuit could be suspect. Maybe we can do > a Skype "en Francais" and debug it together. > Marc > > > On Aug 19, 2017, at 12:10 PM, Dominique Carlier via cctalk < > cctalk@classiccmp.org> wrote: > > Maybe it's better to give us all the useful information these power > supplies, moreover it might be useful to other people with the same > computer. > > An overall bloc diagram of the D-116 power supply including G1 and G2. > http://www.zeltrax.com/classiccmp_forum/psu_overall_bloc_diagram.jpg > > The complete schematics of the part of the power supply named G2. > http://www.zeltrax.com/classiccmp_forum/g2_schematics.jpg > > A drawing of the regulation board of the power supply G2 with the physical > locations of the components. > http://www.zeltrax.com/classiccmp_forum/g2_regulator_board.jpg > > The schematics of this regulation board. > http://www.zeltrax.com/classiccmp_forum/g2_regulator_board_schematics.jpg > > And a bit of literature concerning the principle of operation about the > regulation with this PSU (you will understand better why I am a little bit > lost ;-) This principle of regulation with a panoply of verification and > Protection systems everywhere is unusual for me) > http://www.zeltrax.com/classiccmp_forum/psu_regulation_principe.jpg > > I have already tried without the CPU board: same symptoms. Next step, try > to check the capacitors in operation. > > And because all this is a little bit boring, here is, as a small gift, a > photo gallery of the machine under different angles ;-) > > Ensemble > > http://www.zeltrax.com/classiccmp_forum/serie01/ensemble_01.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/ensemble_02.jpg < > http://www.zeltrax.com/classiccmp_forum/serie01/ensemble_02.jpg> > > D-116 Front panel > > http://www.zeltrax.com/classiccmp_forum/serie01/d116_front_panel_01.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/d116_front_panel_02.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/d116_front_panel_03.jpg > > D-116 open rack > > http://www.zeltrax.com/classiccmp_forum/serie01/d116_open_01.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/d116_open_02.jpg > > G2 regulator board > > http://www.zeltrax.com/classiccmp_forum/serie01/g2_regulator_board.jpg > > Disk Pack drive Diablo Model 40 > > http://www.zeltrax.com/classiccmp_forum/serie01/diskpack_drive_01.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/diskpack_drive_02.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/diskpack_drive_03.jpg > > Mag-tape Pertec 8840A > > http://www.zeltrax.com/classiccmp_forum/serie01/pertec_close.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/pertec_open_01.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/pertec_open_02.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/pertec_open_03.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/pertec_open_04.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/pertec_open_05.jpg > > Drum printer Data Products model 2230 > > http://www.zeltrax.com/classiccmp_forum/serie01/printer_01.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/printer_02.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/printer_03.jpg > > Terminal Entrex > > http://www.zeltrax.com/classiccmp_forum/serie01/terminal.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/terminal_nacked.jpg > > Rear panel / connectors > > http://www.zeltrax.com/classiccmp_forum/serie01/rear_panel.jpg > > From inside > > http://www.zeltrax.com/classiccmp_forum/serie01/flat_cables.jpg > http://www.zeltrax.com/classiccmp_forum/serie01/from_inside.jpg < > http://www.zeltrax.com/classiccmp_forum/serie01/from_inside.jpg> > > Haa I can't wait to operate this heavy machine! ;-) > > Dominique > > >
