On 2022-09-14 1:06 p.m., Sellam Abraham via cctalk wrote:
Lots of Televideo docs scanned thanks to good old Al
Nothing for the 921 but there is an operator's manual for the 922 which may
shed some light on what the continuous beep might mean.
I have the "Televideo 912/920" service binder but I know it has stuff
for other models inside. There is a similar binder on bitsavers I
thought, but each one is probably slightly different. I can check inside
it to see if there's anything relevant.
(I own a TVI-920B.
On Wed, Sep 14, 2022 at 9:33 AM Peter Coghlan via cctalk <
> Mike Loewen wrote:
>> On Wed, 14 Sep 2022, Jonathan Katz via cctalk wrote:
>>> I have a TVI-921C at the museum. I power it on and it beeps
>>> continuously. One long, solid tone that does not stop until I power it
>>> off. How do I start diagnosing this?
>> Check the power supply voltages.
> After checking the voltages, if it has a microprocessor, check if it is
> held reset and if the clock is running.
> If it is a big lump of logic, it would probably be a lot easier to deal
> with if you can find some sort of service manual / circuit diagram /
> circuit description.
> Peter Coghlan.