From: Ahmed Mamoor Amimi (mamoor@xxxxxxxx)
Date: Sat Feb 23 2002 - 15:10:36 GMT-3
open up the box see the circuit near the console port u will see a small
chip with 4x4 legs. see the # on that chip and
download the datasheet from the manufacturer website. print it and consult
any electronic engg. and ask what are the pins
for data in and data out.
Buy a PROB from radioshack or anywhere which can test the IC. now when read
:
1- prob read
2- know the pins for data in and data out.
now power up the router and put the pin of prob on the pin for data out on
the chip. u will see that the prob light will blink
as the data pass through.
now put ur prob pin on data in .... give anything from key board
"gnrogijregijroigjregpoew" then see if the light blinks or not
if not then it is sure that ur IC is down ...
check the # and ask it on local stores if couldn't find then mail the
orginal manufacturer for a shipment.
replace the chip and ur router is OK...
for making it sure that ur doing right and ur IC is dead first check it on
router that it OK with console.... dont worry
PROB will do no harm to it.
It is a SMT (surface mounted technology) chip so desoldering and resoldering
need a reaaaaaaly technian.
-Mamoor
----- Original Message -----
From: <stepnwlf@magma.ca>
Sent: Saturday, February 23, 2002 9:39 PM
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> Message-ID: <000d01c1bc87$d6891740$3101bfce@magma.ca>
> From: "John Underhill" <stepnwlf@magma.ca>
> To: "Ahmed Mamoor Amimi" <mamoor@ieee.org>
> References: <31.22cb0d02.29a8e330@aol.com>
<004601c1bc85$d8d207c0$0f01a8c0@WinProxy>
> Subject: Re: A MAD router
> Date: Sat, 23 Feb 2002 11:33:33 -0500
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> I have a 2505 with exactly this problem, that I have all but written off
> from my rack.. Where do I get the chip? Is it just a matter of soldering
in
> a new one? I don't have a tester, do you know what the chip looks like?
Any
> information you can provide me would be greatly appreciated..
> thanks
> ----- Original Message -----
> From: "Ahmed Mamoor Amimi" <mamoor@ieee.org>
> To: <CiscoCCNP3@aol.com>; <matthen@zisco.com.cn>; <ccielab@groupstudy.com>
> Sent: Saturday, February 23, 2002 11:19 AM
> Subject: Re: A MAD router
>
>
> > If u router dont accept any break seqeuence at very startup then be calm
u
> > have a bad console.
> > and the RS232 chip of console is dead which need replacement.... my 3
> > routers where dead like this
> > that they give on console but dont accept also not at the very
> begining....
> > if ur an electronic guy then u can desold that chip and replace it with
> the
> > sameone, before desolding
> > check the chip with a PROB. prob is an IC checker. u will see that
signal
> is
> > coming but not going through it.
> >
> > I am tell u all these things just because i have done it and replace the
> 232
> > chips and my router comes alive. u
> > have to do some research on this.
> >
> > -Mamoor
> >
> >
> > ----- Original Message -----
> > From: <CiscoCCNP3@aol.com>
> > To: <matthen@zisco.com.cn>; <ccielab@groupstudy.com>
> > Sent: Saturday, February 23, 2002 5:21 PM
> > Subject: Re: A MAD router
> >
> >
> > > hiya,
> > >
> > > what i would try is powercycling, and ctrl-break, the 2621 goes to ;
> > >
> > > rommon>
> > >
> > > then like you were going to do password recovery, bypass the startup
> > config
> > >
> > > rommon> confreg 0x2142
> > >
> > > after reload, the router will enter the intitial config dialogue,
ctrl-c
> > to
> > > bypass that, and you'll have a clean router, reset to the correct baud
> > rate,
> > > and you can reconfigure, set enable pass etc.
> > >
> > > HTH
> > >
> > > joey r.
> > > ccnp/dp/si
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