Subject:
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Re: CHARGER BOARD PROBLEM(URGENT)
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 26 Dec 1998 14:56:31 GMT
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Original-From:
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Fred G. Martin <fredm@%nospam%media.mit.edu>
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Viewed:
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3894 times
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phillip,
please go through the sequence of tests in the assembly directions (as
if you were building the serial/charger board from scratch), and
indicate the point at which you first detect a problem.
http://el.www.media.mit.edu/projects/handy-board/hbassem/index.html
fred
In your message you said:
> hI FRed, anothony and others,
> I just plug in the RJ11 in the HD and charger board. It supposed that the
> red LED on the charger board should light up. It failed to light up. When I
> plug in the adaptor onto the charger board, the red LED light up but NOT
> the yellow LED. However, it still cannot download the P_code.
> Hence, I still encounter the booststrap download failed. I have changed the
> rectifier and voltage regulator . There is no result of it. I have tried to
> use the RJ11 on a good charger board which from my friend. It has no
> problem. Hence, this deduce that the RJ11 has no fault. I've also changed
> the MAX232 chip. The booststrap still failed.
>
> You have mentioned thatthe capactors may be the fault. WHY ??? I did not
> try that to change.
>
> Besides the changing the capacitor, it there any other possibility that the
> booststrap failed ? Please advice.
>
> thank you .
>
>
> Rgds,
> phillip chia
>
>
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Message is in Reply To:
 | | CHARGER BOARD PROBLEM(URGENT)
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| hI FRed, anothony and others, I just plug in the RJ11 in the HD and charger board. It supposed that the red LED on the charger board should light up. It failed to light up. When I plug in the adaptor onto the charger board, the red LED light up but (...) (28 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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