[TechAssist] Re: Chipper Check / CTC 177 series Question
- From: "Jerry" <geiting@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 27 May 2004 19:31:47 -0400
I will also jump into this thread. After first trying it the way RCA said
to do with clip leads in circuit, I found it to be unreliable. I then
created an adaptor to check the EEPROM out of circuit and modified the
Chipper Check interface with a cable to work with it. Since doing that, I
have had almost no problems. I say almost because a few years ago RCA
released the software that did have a bug in it where it wouldn't correctly
reinitialize the EEPROM. I called them about this and they were like, uh,
we don't really support the CTC177 chassis with Chipper Check. But the next
release of the program had fixed the problem...
Jerry Eiting
Christians Electronic Service
Troy, Ohio
----- Original Message -----
From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, May 27, 2004 2:29 PM
Subject: [TechAssist] Re: Chipper Check / CTC 177 series Question
| 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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