DPO70404

<h5>Hi there,</h5> <p></p> <h5>I am troubleshooting a DPO70404. Possibly a B type, although on the unit I can only find DPO70404.</h5> <h5></h5> <h5>I can see that there is a power failure, as one of the diagnostic LEDs is ON red (see attached picture). I have the service manual (v077007610), but this version seems to correspond to a different model, as the description of the LEDs it offers doesn't match the LEDs I have.</h5> <h5></h5> <h5>As you can see on the attached picture, the LED &quot;P1R8V ENABLE&quot; is OFF. Does anyone know the meaning of this warning?</h5> <h5></h5> <h5>It seems to be a problem with the 1.8V rail, but I'd be grateful if someone could confirm.</h5> <h5></h5> <h5>Thanks in advance!</h5>

Hi,<br> <br> If you aren't seeing a letter after the model number then that's because you have a &quot;non-letter&quot; model, the model is just &quot;DPO70404&quot;.<br> I believe the service manual for this model is no longer on our website, so I have attached it along with this post.<br> <br> The service manual has a procedure for debugging non-functioning power rails, I suggest you follow that and report back if needed.