[time-nuts] Z3805 service information ?

[paul swed]

Mark
Many of us would like those details but they have never crossed time-nuts
path as far as I know.
There has however been various reverse hacks that are helpful. Basically
time-nuts have figure out this and that power supply voltages and such.
Gross stuff. Some have ventured down into Forth.
But the easy pull out diags and schematics. Those were the gud ole days.

Comparing the two units are an excellent way to try to deduce the issue.
You are better off then most with two. However swapping parts may be a bad
idea. You may end up with 2 bad units. Just my 2 cents on this last item.

There is a DC to DC inverter and there tend to be issues with that so power
supply checks are a really good place to start.
Best of luck
Paul
WB8TSL

On Tue, Sep 1, 2015 at 12:54 PM, Mark Spencer <mark at alignedsolutions.com>
wrote:

> Hi, I realize this is a long shot but I'm curious if anyone has ever come
> across any form of a service manual (or insight into a power on self test
> routine) for the Z3805 gpsdo ?
>
> One of mine is not working properly after being power cycled.   It works
> well enough to blink the status lights on the front panel hence my request
> for info about a possible power on self test routine.
>
> I'll likely start by confirming the power supply voltages using another
> working unit as a guide and then swap parts with another working unit but
> thought I would look for service information first.
>
> Thanks in advance for any help.
>
> With the exception of two ocxo's that have a dedicated battery backup
> system all my time nuts gear, computers, freezers, etc was power cycled
> during a two day power outage after a wind storm while I was on vacation.
>  I have a nice generator that sat un used in my garage (:
>
> Mark Spencer
> VE7AFZ
>
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