[Pro2006] Re: Pro2006 digest, Vol 1 #96 - 6 msgs

Sat, 12 Jul 2003 11:02:46 +0100

Your quite right, will purchase the books.
thanks.

----- Original Message ----- 
From: <[email protected]>
To: <[email protected]>
Sent: Saturday, July 12, 2003 9:04 AM
Subject: Pro2006 digest, Vol 1 #96 - 6 msgs

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> Today's Topics:
>
>    1. Re: Pro 2006 low battery indicator always (Les Vaughn)
>    2. PDF (John M Walker)
>    3. Re: PDF (Clark Rennie)
>    4. Re: Re: Pro 2006 low battery indicator always on (David Deelstra)
>    5. Re: PDF (Len G. Carpenter)
>    6. Re: PDF (Randy True)
>
> --__--__--
>
> Message: 1
> Date: Fri, 11 Jul 2003 05:09:04 -0700 (PDT)
> From: Les Vaughn <[email protected]>
> To: [email protected]
> Subject: [Pro2006] Re: Pro 2006 low battery indicator always
> Reply-To: [email protected]
>
> Aha!
> Scanner Mod Volume 2 has a good discussion on this
> circuit starting on page 17.
> It doesn't address my specific problem, but gives
> enough information that I should be able to figure it
> out.
> The regulator is actually IC-9.
> Don't know how I missed it before, skimmed to lightly
> I guess.
> Anyway, thanks all for your input.
> If I get it fixed I'll let the list know for future
> ref.
> Les
>
>
> __________________________________
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> --__--__--
>
> Message: 2
> From: "John M Walker" <[email protected]>
> To: <[email protected]>
> Date: Fri, 11 Jul 2003 15:04:58 +0100
> Subject: [Pro2006] PDF
> Reply-To: [email protected]
>
> Hi Does anyone have the three Cheek books in PDF format.
> Thanks.
>
> --__--__--
>
> Message: 3
> Date: Fri, 11 Jul 2003 07:29:59 -0700
> To: [email protected]
> From: Clark Rennie <[email protected]>
> Subject: Re: [Pro2006] PDF
> Reply-To: [email protected]
>
> Per the Barnes and Noble web site, all three books can be ordered.
> Go their web site and search for "Scanner and Bill Cheek"
>
> Clark
>
> At 03:04 PM 07/11/2003 +0100, you wrote:
>
> >Hi Does anyone have the three Cheek books in PDF format.
> >Thanks.
> >_______________________________________________
> >Pro2006 mailing list
> >[email protected]
> >http://mailman.qth.net/mailman/listinfo/pro2006
>
>
>
> --__--__--
>
> Message: 4
> From: "David Deelstra" <[email protected]>
> To: <[email protected]>
> Subject: Re: [Pro2006] Re: Pro 2006 low battery indicator always on
> Date: Fri, 11 Jul 2003 16:05:35 -0000
> Reply-To: [email protected]
>
> IC9 is the 5 volt regulator for the CPU. It has no effect on the low
battery
> circuit.  Q33 is the primary voltage regulator that reduces the 13.8 volt
> input power to 9.2 volts.  Q33 voltages when plugged in and operating
should
> be:
>
> 10.6 v  right pin  (base, controlled by Zener diode D57)
> 13.8 v  center pin (collector, from power supplies)
>   9.2 v  left pin  (emitter, to D56, D59, and IC9)
>
> This pin layout may not match with yours, due to repairs or part
> substitutions in production.
>
> The 9 v backup battery is sensed by op-amp IC5.  When the battery voltage
is
> ok the op-amp output is 0 v to the CPU (IC501, pin 31).  Check the
voltages
> around IC5:
>
> 2.3 v  pin 10 (reference)
> 4.5 v  pin 9   (from voltage divider to 9 v battery)
> 0 v     pin 8   (to CPU through connector CN3 pin 11)
>
> If you just want to kill the beep, unsolder or cut one end of C219.
>
>
> ----- Original Message ----- 
> From: "Les Vaughn" <[email protected]>
> To: <[email protected]>
> Sent: 2003/07/11 03:35
> Subject: [Pro2006] Re: Pro 2006 low battery indicator always on
>
>
> > Thanks all for the input so far.
> > I measured the voltage at the pads where the battery
> > leads connect and it's fine.
> > Looking on to Q33 which I suspect is the regulator
> > someone mentioned, I have the following voltages (ref
> > to ground) at pins 1, 2, 3 (assuming pin 1 is on the
> > right as looking at the flat side):
> >
> > 9.2v    right pin
> > 9.2v    center pin
> > 8.74v   left pin
> >
> > This is with the unit unplugged and a fresh battery
> > installed.
> > I do have the service manual, if I could find the darn
> > thing.  We moved recently and still don't have
> > everything unpacked.
> > I have all 3 of the Cheek books too, a quick skim
> > through them didn't enlighten me on this situation,
> > I'll try a more in-depth read this weekend.
> > I got the books and service manual years ago with
> > intentions of doing some of the mods but never did.
> > I did do a memory expansion on a freinds 2020 though.
> > Pretty cool.
> > Les
> >
> >
> > __________________________________
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> > SBC Yahoo! DSL - Now only $29.95 per month!
> > http://sbc.yahoo.com
> > _______________________________________________
> > Pro2006 mailing list
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> >
>
>
>
> --__--__--
>
> Message: 5
> Date: Fri, 11 Jul 2003 12:54:49 -0400
> From: "Len G. Carpenter" <[email protected]>
> To: [email protected]
> Subject: Re: [Pro2006] PDF
> Reply-To: [email protected]
>
> To many pages to scan, besides be a good person and help support his
> wife by buying the books.
>
> John M Walker wrote:
>
> > Hi Does anyone have the three Cheek books in PDF format.
> > Thanks.
> > _______________________________________________
> > Pro2006 mailing list
> > [email protected]
> > http://mailman.qth.net/mailman/listinfo/pro2006
>
>
> --__--__--
>
> Message: 6
> From: Randy True <[email protected]>
> To: [email protected]
> Subject: Re: [Pro2006] PDF
> Date: Fri, 11 Jul 2003 16:42:25 -0400
> Reply-To: [email protected]
>
> Well worth the money, I might add.
> Besides, it would be copyright infringement.
>
> ----------
> Randy True             All Ohio Scanner Club
> [email protected]       http://aosc.rpmdp.com
>
> Kentucky Ohio Indiana Tri-State Scanner Page
> http://home.fuse.net/rwtrue00/Index.htm=20
>
> >To many pages to scan, besides be a good person and help support his
> >wife by buying the books.
>
>
>
> --__--__--
>
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> End of Pro2006 Digest
>