And some more,
The schematic I have calls out an M48T35AV, a combined 256K SRAM real time
clock, power fail control circuit and battery. Fitted to my radio is an
M4T28, a 48mAh battery and crystal. Ha, but pulling it off reveals the
M48T35AV underneath. The plot thickens. Reading the data sheet now.
Martin, HS0ZED
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Martin Sole
Sent: 16 October 2010 22:20
To: 'N4PY2'; 'Discussion of Ten-Tec Equipment'
Cc: 'ROD'
Subject: Re: [TenTec] Orion resets at every power up
DSP/CPU board, U501, Yellow oblong, ST device marked C996160215,
M4T28-BR12SH1, Timekeeper Snaphat Lithium Battery.
Looks like it's plugged in to a 16 pin DIL holder designed to be mounted SMD
style.
Now to find it in the schematics. Unlikely I can find a source locally if it
should turn out to be the problem.
BTW, checked the 5 volt supply and it measures 5.06 volts at the output of
the regulator board so I guess that is okay.
Martin, HS0ZED
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of N4PY2
Sent: 16 October 2010 22:08
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Orion resets at every power up
That's definitely not the case. I just can't remember exactly where the
battery is located.
Carl Moreschi N4PY
121 Little Bell Drive
Hays, NC 28635
www.n4py.com
----- Original Message -----
From: "ROD" <w3krq@dejazzd.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Saturday, October 16, 2010 10:56 AM
Subject: Re: [TenTec] Orion resets at every power up
>I think they are using a chip with a built in battery
>
> --------------------------------------------------
> From: "Martin Sole" <hs0zed@csloxinfo.com>
> Sent: Saturday, October 16, 2010 10:44 AM
> To: "'N4PY2'" <n4py2@earthlink.net>; "'Discussion of Ten-Tec Equipment'"
> <tentec@contesting.com>
> Subject: Re: [TenTec] Orion resets at every power up
>
>> Okay, now I'm really confused! I'm looking at the V2 sweep mod
>> document and have my 565AT in bits in front of me. Cannot for the
>> life of me identify a battery anywhere on either the document or the
>> hardware on my bench. Huh, what gives? Where exactly is this battery?
>> Lets try and narrow it down to a specific board first:
>> DSP/CPU
>> Display
>> Left side front panel
>> Right side front panel
>>
>> Maybe I'm being dumb here but nothing I can see looks anything like a
>> battery I've ever seen before.
>>
>> Thanks
>> Martin, HS0ZED
>>
>>
>> -----Original Message-----
>> From: tentec-bounces@contesting.com
>> [mailto:tentec-bounces@contesting.com]
>> On Behalf Of N4PY2
>> Sent: 16 October 2010 21:14
>> To: Martin Sole
>> Cc: tentec
>> Subject: Re: [TenTec] Orion resets at every power up
>>
>> It's in the front panel of the Orion. It's a coin cell. See the
>> description on the tentec website for how to do the version 2 sweep mod.
>> This description shows how to get to the battery. The battery is
>> what keeps the non-volatile RAM alive. Changing it should fix your
>> problem.
>>
>> Carl Moreschi N4PY
>> 121 Little Bell Drive
>> Hays, NC 28635
>> www.n4py.com
>>
>>
>> ----- Original Message -----
>> From: "Martin Sole" <hs0zed@csloxinfo.com>
>> To: "'N4PY2'" <n4py2@earthlink.net>; "'Discussion of Ten-Tec Equipment'"
>> <tentec@contesting.com>
>> Sent: Saturday, October 16, 2010 10:06 AM
>> Subject: RE: [TenTec] Orion resets at every power up
>>
>>
>>> There's a battery? Who'd have thought. I know it says battery
>>> failure when doing a RAM clear but had assumed (ha) it was just a
>>> way of saying that the process had taken place. Maybe standard
>>> device text.
>>>
>>> So where is the battery? Not on the CPU/DSP board. What is it's
>>> function?
>>> Which schematic is it on? Coin cell? What expected life? Hopefully
>>> changing requires no special procedure. Who knows? Questions
>>> questions??!!
>>>
>>> Thanks
>>> Martin, HS0ZED
>>>
>>>
>>> -----Original Message-----
>>> From: tentec-bounces@contesting.com
>>> [mailto:tentec-bounces@contesting.com]
>>> On Behalf Of N4PY2
>>> Sent: 16 October 2010 19:11
>>> To: Discussion of Ten-Tec Equipment
>>> Subject: Re: [TenTec] Orion resets at every power up
>>>
>>> There's a battery behind the front panel of the Orion. It may need
>>> to be replaced. Follow the old instructions on the Tentec site for
>>> how to modify the Orion for the Version 2 sweep to get to the
>>> battery.
>>>
>>> Carl Moreschi N4PY
>>> 121 Little Bell Drive
>>> Hays, NC 28635
>>> www.n4py.com
>>>
>>>
>>> ----- Original Message -----
>>> From: "Martin Sole" <hs0zed@csloxinfo.com>
>>> To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
>>> Sent: Saturday, October 16, 2010 2:10 AM
>>> Subject: [TenTec] Orion resets at every power up
>>>
>>>
>>>> After being able to load software into the radio again, not sure if
>>>> it was PC serial port cable or connectors but it's okay now, I'm
>>>> now seeing that at almost every power cycle the radio does a master
>>>> reset. The sequence of events is as follows:
>>>>
>>>>
>>>>
>>>> Radio off
>>>>
>>>> Power up and master reset complete appears
>>>>
>>>> Radio boots but has unusable audio
>>>>
>>>> Power down followed by power up again about 5 seconds later radio
>>>> starts normally
>>>>
>>>> Power off and leave for a short while, sometimes only 20 seconds or
>>>> so, power up again causes master reset
>>>>
>>>>
>>>>
>>>> Needless to say this is frustrating.
>>>>
>>>>
>>>>
>>>> RAM clear and forced master reset do not appear to have helped.
>>>>
>>>>
>>>>
>>>> Is it a 'known' issue?
>>>>
>>>>
>>>>
>>>> Thanks
>>>>
>>>> Martin, HS0ZED
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> TenTec mailing list
>>>> TenTec@contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>
>>> _______________________________________________
>>> TenTec mailing list
>>> TenTec@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>
>>
>> _______________________________________________
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>
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