AnsweredAssumed Answered

8563E failure, help needed.

Question asked by ChrisG on Nov 1, 2008
Latest reply on Nov 12, 2008 by jborges3
I have an 8563E not working and limited access to documentation.

The SA fails during start-up and displays error 335 when it stops. Viewing multiple messages gives errors 201,205,336,335,456 and 499 as well.

As per 8562E Service Guide Check A3 ADC MUX Function Block, I checked
the voltages being between 1.7 and 5.0 volts which I belive is OK.

Can someone point me in the right direction what to do next?

Although I have not received any response to my post I'll try again.

When the SA stops it shows PRESET and there is no sweep. I have checked the power supply and all voltages are ok.

The document available is the General Troubleshooting Guide (for 8652E).

I believe the problem is in on the A2 or A3 board. It says that the ADC needs 2 signals from A2 HBADC-CLKO and HBBKT-PULSE.
The HBADC-CLKO is missing and it supposed to come from A2. My document does not mention this signal in the controller section.

I hope someone has worked with this SA and can guide me.