[TechAssist] Re: Chipper Check / CTC 177 series Question
- From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 27 May 2004 14:29:35 -0400
Sorry to jump in on this thread ,but I use mine with an external socket also
like you do Jon.(I bought my adaptors with my CC). I made up a 8 pin test
socket for doing the CTC175,177. . It works for me. . Like I said earlier
might be worth reloading the program. May have a glitch some where. I know
you should go by the book with the hook up to test the Eprom. Lately I have
not been that particular , with my setup. I just plug in and test it still
works. I have not grounded the micro either like I should and just did a
CTC187 with chassis hook up and reset EPROM OK.'Very lucky I guess! The
point I am trying to make is , you must have the hook up right or it would
not test the CTC175 EPROM.
good luck,
Bruce.
----- Original Message -----
From: "Jon Garver" <jongar@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, May 27, 2004 1:34 PM
Subject: [TechAssist] Re: Chipper Check / CTC 177 series Question
> Jim, yes, I read the help file and even though it implies
> that it must be in the chassis, that isn't totally true.
> At least my external circuit works with the 175 series.
> Maybe that won't hold true with the 177 series but I can't
> understand what the difference would be as far as set-up
> goes.
>
> Error screen says "no communication". Pulled the chip and
> put in one for CTC175 and it read just fine. Tried a new
> one for 177 and it didn't read either.
>
> It is a ST EEPROM and my CC version is 1.78A
>
> The circuit for testing externally is here:
> http://wa6ati.com/adaptor.htm
>
> It is a diagram for using an IC test clip but there is a
> footnote that says that it is possible to initialize an
> EEPROM even if it is removed from the television.
>
> What I did was use an IC socket instead of the test clip
> since I didn't have one on hand.
>
> Jon Garver
> Heritage Television Service
> 204 Heritage Rd.
> Monticello, Indiana U.S.A.
> 574-583-9681 Voice & FAX
> jongar@xxxxxxxxxxxxx or
> htv1@xxxxxxxxx (for file u.l.)
>
> ----- Original Message -----
> From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, May 26, 2004 3:41 PM
> Subject: [TechAssist] Re: Chipper Check / CTC 177 series Question
>
>
> > Jon, did you read the CC help files set up procedure? It implies that
> > the chip must be in the chassis and all you can doe with a 175, 176,
> > 177, 186 and 187 is to reinitialize. See copy/paste below:
> >
> > CTC175, 176, 177, 186 & 187 Setup Procedure
> >
> > The only procedure that can be performed on these chassis with Chipper
> > Check is initializing the EEPROM to factory settings. The set MUST be
> > OFF and UNPLUGGED when initializing the EEPROM. You must first
> > determine if your set has a Motorola or ST microprocessor. The IC,
> > U3101, will be marked with either ST or Motorola. If the IC is a
> > Motorola ground pin 1, if the IC is marked ST ground pin 2. Retain this
> > ground while the EEPROM is being initialized. Remove the ground before
> > restoring the set to operation. Prior to initializing the EEPROM, an
> > external 5 volt supply and a 1K resistor must be connected. DO NOT
> > apply the external 5 volts until after the chassis is selected in the
> > Chipper Check software. If 5 volts is applied before the chassis is
> > selected a NO COMMUNICATIONS error may result.
> >
> > The diagram below shows how Chipper Check is connected to the chassis.
> > Adapter board 212121 (supplied), 7 jumper wires and an IC clip are used
> > to connect the Chipper Check interface box to the EEPROM. You may
> > connect leads directly to the IC or use an IC clip. The IC clip shown
> > in the diagram is a Pomonaâ clip, Pomona part number 5108, available
> > from most parts supply houses.
> >
> >
>
****************************************************************************
****
> ***********************************
> > Since 1972
> > Jim Myers
> > Telrad Electronics
> > Fort Wayne, Indiana
> >
> >
> > Jon Garver wrote:
> > > OK CC users, I'm trying to get CC to communicate with an
> > > EEPROM out of this 177 chassis. When I said "out" I mean that
> > > I have an adapter with I.C. socket and external 5V source.
> > >
> > > I don't see the 177 associated with any of the interface
> > > adapters. I've checked one out of a 175 and it works OK.
> > > I tried a new chip for another 177 and can't get it to
> > > communicate with CC either.
> > >
> > > The interface adapter that I use with my homemade adapter
> > > is the one designated for CTC 174, 175, 18X series, 19X series
> > > an 203.
> > >
> > > The 177 is in the "chassis" list so is there something else that
> > > I need to check it or something different that I have to do to
> > > get it to communicate?
> > >
> > > Jon Garver
> > > Heritage Television Service
> > > 204 Heritage Rd.
> > > Monticello, Indiana U.S.A.
> > > 574-583-9681 Voice & FAX
> > > jongar@xxxxxxxxxxxxx or
> > > htv1@xxxxxxxxx (for file u.l.)
> > >
> > >
> >
>
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