On 05/09/2012 12:33 AM, [email protected] wrote:
Hi Magnus,
On 05/08/2012 11:58 PM, Bob Camp wrote:
Hi
The first thing to check is the soldering job on the DB-9 connector.
Second thing to check is the RS-232 level translator IC. (RS-232 in
should create TTL etc)
Does not explain why the OCXO remains stuck as if it was untrained.
I suspect that the CPU never starts or hangs early.
Cheers,
Magnus
The big Trimble IC (U2) close to the RS232 port, is also noticeable colder
to a finger tip on the faulty unit, compared to a working unit.
OK. As Azelio proposes, check the 3,6864 MHz clock.
If you can find the reset pin, then that too.
Cheers,
Magnus
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