Scantronic 9100 fault

Scantronic 9100 fault
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Subject Author Date
Scantronic 9100 fault Dave Partridge 03-30-2008
Posted by Dave Partridge on March 30, 2008, 3:24 pm
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There is a fault with the alarm. With the system in engineering mode,
selecting 97/Enter (Engineer Walk Test), the display shows a tamper fault
with zone 4.

I have shorted zone 4 A/T loop and also zone 4 alarm loop at the panel, and
the fault persists.

My suspicion is possibly the TC4021BP shift register associated with the
zones 1 to 4, but it could be a problem with the dirving circuits.

Does recognise this fault? Are circuit diagrams available?

Thanks
Dave



Posted by Norton Nescio on March 30, 2008, 5:13 pm
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Dave Partridge wrote:
but it could be a problem with the dirving circuits.

they always get me too!

Posted by Paul Ekins on March 31, 2008, 1:20 pm
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Hi Dave,

Haven't had this problem myself on a 9100, but have you tried replacing all
tamper circuits with a link to see if the fault persists?
Had a persistent tamper fault on a 9452 a few years back, even tried
soldering out the panel tamper switch, not worth the hassle, changed board
and all was good.


--
A fine is a tax for doing wrong. A tax is a fine for doing well.


Paul Ekins

Linc Secure



> There is a fault with the alarm. With the system in engineering mode,
> selecting 97/Enter (Engineer Walk Test), the display shows a tamper fault
> with zone 4.
>
> I have shorted zone 4 A/T loop and also zone 4 alarm loop at the panel,
> and the fault persists.
>
> My suspicion is possibly the TC4021BP shift register associated with the
> zones 1 to 4, but it could be a problem with the dirving circuits.
>
> Does recognise this fault? Are circuit diagrams available?
>
> Thanks
> Dave
>



Posted by Dave Partridge on March 31, 2008, 4:42 pm
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Yes, I replaced zone 4 tamper with a link.

D.
> Hi Dave,
>
> Haven't had this problem myself on a 9100, but have you tried replacing
> all tamper circuits with a link to see if the fault persists?



Posted by Just Looking on March 31, 2008, 9:31 pm
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I think I am glad that one is on your side of the pond.

> Yes, I replaced zone 4 tamper with a link.
>
> D.
> > Hi Dave,
> >
> > Haven't had this problem myself on a 9100, but have you tried replacing
> > all tamper circuits with a link to see if the fault persists?
>
>



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