I'm trying to repair 8720D network analyzer. There is no internal or external monitor picture. Red led light on CPU board always on, the light is DS403. The manual say that in this case replace A7 CPU board assembly. I would be happy to do so, but nothing is available on eBay, Agilent parts, etc. Just trying to understand this error, may be fixing the board. No documentation available anywhere.
Please, help to find definition of this red LED error, or may be someone has this board laying around.
Is anybody have documentation on A7 CPU board? The part numbers are : 08753-63272 or 08720-69253.
Dr_Joel may be you have some diagnostic documentation on it, you are one of the developers for this product, please.
Thank you everybody for taking time to reply, but no help yet. All documentation available on internet doesn't provide detailed troubleshooting of A7 CPU board on any of analogs like 8753ES, 8753D, 8753E, 8720ES. May be I could be directed by someone to where I can buy the whole board?