AnsweredAssumed Answered

8563E failure, help needed.

Question asked by ChrisG on Nov 8, 2008
Latest reply on Mar 12, 2010 by AETEREPAIR
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 previous 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.