deckel fp4ma retrofit

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9 years 6 months ago #91395 by bahrabadi
Replied by bahrabadi on topic deckel fp4ma retrofit
sorry.but I'm stuck and need your help.I think I hotwired the drive and pullout all axis boards from drive(soomeone suggested it).but the 4 red leds are still on.can anyone help me?I attach schematic of the section that i hotwired

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9 years 6 months ago #91401 by tommylight
Replied by tommylight on topic deckel fp4ma retrofit
That is the signal that goes out, not in to the drives. I will have to read from the begining as i do not recal what was going on.
I also do not understand why would you pull all the drives out if you have to test them?
What am i missing?

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9 years 6 months ago - 9 years 6 months ago #91405 by bahrabadi
Replied by bahrabadi on topic deckel fp4ma retrofit
well someone suggested that when pulling the drives out;if the red led is still on then it is high likely would be power supply (or 035038) board problem.this is the diagram and the picture before it is my drive wires.what did i do wrong?is there any way to make sure that the drive is ok?
Last edit: 9 years 6 months ago by bahrabadi.

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9 years 6 months ago #91437 by tommylight
Replied by tommylight on topic deckel fp4ma retrofit
Question : did you power the thing with the drives in place? What happens ?
Put the drives back in place, power it up, find the FG switches or wire them directly, ONLY one by one, get one of those dead batteries or a multimeter, disconnect the SW1 and SW2 wires AFTER you write down how they are connected in order, withe the FG closed connect the multimeter leads to the SW1 pins on the drive shortly ( multimeter has to be set at OHM or KOHM ), does the motor move or make noise? Touch the SW1 ( or SW2 if SW1 does not work ) very shortly as the motors should run in one direction at 1/3 full speed if the multimeter is at OHM, it will run even if the breaks are engaged, so be careful.
You should also read the tutorial about servo tuning on the advanced section of this forum as it has a lot of details about testing the drives and the procedure to wire them to Mesa 7i77.
NEVER connect everything and power the machine, one by one ONLY. Until you get things working properly.

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