schematic/service info for Samsung N400?

Hello,

I broke the RF port off the PCB on my N400 by plugging in an external
antenna. (I did it very gently, too, and this after having the POS
phone for a whole month -- if anyone has an N400 and is using an
antenna on the RF port, be careful!) In a fit of stupidity I told
Samsung that I had used an antenna on the phone, and *poof* there went
my warranty, despite the phone being obviously defective if the port
breaks off with such little pressure applied.

So I figured if I had voided my warranty I might as well try to fix
it. After taking apart the phone, I see exactly what happened to it;
the 4 solder points on the PCB that hold the outer metal sleeve on the
RF port cracked off and the whole jack came off with it.

The phone still works (in that it turns on and looks for signal), but
doesn't ever find one. My suspicion is that breaking off the jack has
also severed the connection from the chipset to the (builtin) antenna.
Despite what Sprint or Samsung tells you, that RF port IS an antenna
and it does work as such.

Anyway, there are two leads in addition to the ones for the sleeve;
does anyone know what they are for? Is the antenna a loop or a single
lead? In either case, what needs to be connected to what?

Any information appreciated.


Thanks.

Matt Mitchell

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Matt Mitchell wrote:
> Anyway, there are two leads in addition to the ones for the sleeve;
> does anyone know what they are for? Is the antenna a loop or a single
> lead? In either case, what needs to be connected to what?
>
> Any information appreciated.

What is the FCC ID number? Look inside the battery compartment.

Then go to the FCC type acceptance page:
http://gullfoss2.fcc.gov/prod/oet/cf...ericSearch.cfm

In the Grantee Code filed, type in the first three characters of
the ID number. In the Product, type in the rest.

For example, for the Sanyo 6000 (Sprint Model No. SPC-6000), the
FCC ID is AEZSCP-6K. so you would use "AEZ" for the Grantee Code
and "SCP-6K" as the Product Code. Or you could just do a full search
for "Sanyo".

When you click on a link, Internet Explorer might try to open
the link and then tell you no application found. So you need to
SAVE the link - it will be "retreive.cgi" and once saved, rename
it to "whatever_you_want.pdf" and then open it with Adobe Acrobat
Reader.

JRW <no_addy@no_.com> wrote in message news:<[email protected]>...
> Matt Mitchell wrote:
> > Anyway, there are two leads in addition to the ones for the sleeve;
> > does anyone know what they are for? Is the antenna a loop or a single
> > lead? In either case, what needs to be connected to what?
> >
> > Any information appreciated.
>
> What is the FCC ID number? Look inside the battery compartment.
>
> Then go to the FCC type acceptance page:
> http://gullfoss2.fcc.gov/prod/oet/cf...ericSearch.cfm
>
> In the Grantee Code filed, type in the first three characters of
> the ID number. In the Product, type in the rest.
>
> For example, for the Sanyo 6000 (Sprint Model No. SPC-6000), the
> FCC ID is AEZSCP-6K. so you would use "AEZ" for the Grantee Code
> and "SCP-6K" as the Product Code. Or you could just do a full search
> for "Sanyo".
>
> When you click on a link, Internet Explorer might try to open
> the link and then tell you no application found. So you need to
> SAVE the link - it will be "retreive.cgi" and once saved, rename
> it to "whatever_you_want.pdf" and then open it with Adobe Acrobat
> Reader.

Wow. Thanks. Who knew the FCC could be so useful?

Unfortunately, they grant "confidentiality" to block diagrams and
schematics -- at least for the N400. So I'm still stuck. (I doubt
anyone would try to duplicate such a crappy design anyway.)


Matt Mitchell