Diode check

• dynamics
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1 week 6 days ago - 1 week 6 days ago #1637 by dynamics

Diode check was created by dynamics

How is diode check of generator control unit done? How can I test a diode while it is still in a circuit without removing it completely from the circuit?

Last edit: 1 week 6 days ago by dynamics.

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• OG GarlicSalt
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1 week 6 days ago #1638 by OG GarlicSalt

Replied by OG GarlicSalt on topic Diode check

Do you have a diagram, depending on how the circuit is laid out you can still check it. Also I don't know if this is in all cases but bad diodes I have found before have always produced either an open or extremly high resistance.

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• Mark
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1 week 6 days ago #1639 by Mark

Replied by Mark on topic Diode check

There is no way I know of to check diodes (or any other components) inside the GCU.

Any component under test must be isolated on at least one side.

Do have an image of what you're concerned with?

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1 week 6 days ago #1642 by OG GarlicSalt

Replied by OG GarlicSalt on topic Diode check

Yeah I'm not seeing anyway to test these units without dissasembly of the LRU.

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1 week 6 days ago #1643 by Mark

Replied by Mark on topic Diode check

I cannot post a complete page from any Boeing manual.

I've cut an image from your PDF.....
  
  

 

  
  
These diodes cannot be checked from the pins on the unit.
 

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