Electronics Forum | Thu Mar 19 18:26:30 EDT 2020 | damiendigilin
We just brought a used TP11 having some problems the computer will no longer boot as the 25VDC+ line was reporting over voltage at 31+VDC If we hit enable 25VDC+ on the power unit card it blows the 38+VDC Fuse F8.
Electronics Forum | Tue Mar 31 08:48:30 EDT 2009 | cyber_wolf
Does the PIAB or ELMO have anything to do with the small X ? I don't see any connection in the schematics.
Electronics Forum | Tue Mar 31 16:36:06 EDT 2009 | kmakiya
Take a look at the BM3 Ed-1C, page 6 schematic - lower middle. N17-N18 off of XXW2B goes to FX. Have you checked this fuse? Good luck
Electronics Forum | Wed Apr 01 08:11:12 EDT 2009 | cyber_wolf
Ya thats one of the first things I checked. AMK. Thanks for takin a look.
Electronics Forum | Tue Apr 21 13:28:23 EDT 2009 | cyber_wolf
Ha ! well Bruce it looks like great minds think alike. I have already tried everything you just listed. I really appreciate your input. Sounds like you know these machines well.
Electronics Forum | Thu Mar 19 21:06:19 EDT 2020 | sarason
In circumstances like these immediately switch off and remove your power supply , I often build a test harness because the damage to an expensive and unique machine is not woth the trouble of shotgun repair. Dead resistors in the voltage sense rail.
Electronics Forum | Thu Mar 26 08:51:40 EDT 2009 | avalancher
Hi Sr. First suggestion is to call Mydata's phone support. With that said... Here is some ideas of what you could check: 1. Do you have power at the XWB board connector going to the motor (xxwm connector)? 2. Do you have power coming through the bl
Electronics Forum | Mon Apr 20 08:32:28 EDT 2009 | cyber_wolf
I actually did replace the cable from the comp box to the X-boards. The original small x-motor was indeed bad. I verified this by taking it to my working machine and trying to pulse it when it was in my hand. (the mot boards were loaded). Then I to
Electronics Forum | Wed Mar 25 14:55:17 EDT 2009 | cyber_wolf
The small x motor quit working.It seems that there is no voltage going to the motor. Here is what I have done so far: *Verified that the motor is good. *Check pico fuses on the backplane *Verify voltages on backplane and on big booster. *Swap mot ca
Electronics Forum | Tue Apr 21 12:48:13 EDT 2009 | bk
ok you verified that the motor was bad. So now i would go back and verify that your voltages are still good on the back of the computer box and on the booster board. If they all check out fine. I would take the mot x board from your working machine a
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