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Need Help!!! 03 Alarm on Spindle Amplifier

robbie0201

Plastic
Joined
Dec 11, 2019
I have a hitachi seiki and A06B-6088-H222#500 spindle amplifier, was working great then I got this alarm(well that is how it always happens).
I have read that error code 03 is Fuse on DC link Blown. But where the heck is that fuse?
Anyone encounter this before?
 
It’s behind the front board and is connected between the rectifier and output transistors. Usually when this fuse blows it is caused by a bad output transistor module.
So I checked the fuses and none were bad. how would I check the output transistor modules?
these are the ones I have

A50L-0001-0260N​

 
It’s behind the front board and is connected between the rectifier and output transistors. Usually when this fuse blows it is caused by a bad output transistor module.
Another thing is that, this is the last module in the link. it goes power supply, spindle amplifier, servo amplifier, servo amplifier, to lastly the one giving the alarm.

being that its last in line, could it be the one that is before it causing the 24v problem. I have taken this one apart also and did not find anything blown.
any thoughts?
 








 
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