Dignostic on 7I96 Board
- Ewok2
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24 May 2021 15:27 #210066
by Ewok2
Dignostic on 7I96 Board was created by Ewok2
I have a 7I96 mesa board working since some years, but I change a little the wiring and made a mistakes.
I made a shortcircuit between TB1 PIN 24 (5V) and the TB3 PIN 12 (24V).
There where some smoke...
The card still answer to LinuxCnC, but "Home" does not works anymore (The stepper motors does not move anymore)
Whith the Hal metter it seem's that the input works...
Do you thinks the card is out off order, or maybe only one a part of the TB1 ? (I need only 3 steeper motor control...)
How can I test simply the stepper motor control ?
Thanks
I made a shortcircuit between TB1 PIN 24 (5V) and the TB3 PIN 12 (24V).
There where some smoke...
The card still answer to LinuxCnC, but "Home" does not works anymore (The stepper motors does not move anymore)
Whith the Hal metter it seem's that the input works...
Do you thinks the card is out off order, or maybe only one a part of the TB1 ? (I need only 3 steeper motor control...)
How can I test simply the stepper motor control ?
Thanks
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24 May 2021 15:48 #210069
by PCW
Replied by PCW on topic Dignostic on 7I96 Board
The most likely parts to be damaged are the ACT parts as they connect to
5V and have the lowest overvoltage rating.
These include the 74ACT540 (U4) and 74ACT541 (U7) that drive
the step/dir outputs 0..3 and the 74ACT04s that drive step/dir 4 and the
isolated outputs (U3,U8,U16)
5V and have the lowest overvoltage rating.
These include the 74ACT540 (U4) and 74ACT541 (U7) that drive
the step/dir outputs 0..3 and the 74ACT04s that drive step/dir 4 and the
isolated outputs (U3,U8,U16)
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24 May 2021 15:55 #210070
by Ewok2
Replied by Ewok2 on topic Dignostic on 7I96 Board
Thanks for reply
If I understand that mean the card is no more usable...
Do you confirm?
If I understand that mean the card is no more usable...
Do you confirm?
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24 May 2021 16:16 #210074
by PCW
Replied by PCW on topic Dignostic on 7I96 Board
Well its probably fixable for someone with access to SMT repair
equipment. The parts are less than $1.50 or so
equipment. The parts are less than $1.50 or so
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24 May 2021 16:52 #210080
by Ewok2
Replied by Ewok2 on topic Dignostic on 7I96 Board
Thanks
I do some wiring but not so thin.
Just for fun I will try to see if a component seem's broken...
I do some wiring but not so thin.
Just for fun I will try to see if a component seem's broken...
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