21 Jul
2008
21 Jul
'08
6:28 p.m.
I'm trying to get a TP 701c I bought off of eBay working to install OS/2
Warp on. But it has a password set in the BIOS. According to the service
manual ftp://ftp.software.ibm.com/pc/pccbbs/mobiles/tpvol2.pdf there are
two Power-On Password Bypass Pads on the bottom of the lower system board,
but no instructions on what to do with them. Do I need to short them out?
If so how? Someone else suggested desoldering the backup battery, but if
I can just short two pads, that would be preferred. Right now its
completely disassembled. I have two other 701c machines, but they each
have their own problems. Worse case if I can't clear the password I can
try to take the display off this one and put it on the 701c that has a
display problem.
Mark
21 Jul
21 Jul
7:15 p.m.
madodel wrote:
I'm trying to get a TP 701c I bought off of eBay
working to install OS/2
Warp on. But it has a password set in the BIOS. According to the
service manual ftp://ftp.software.ibm.com/pc/pccbbs/mobiles/tpvol2.pdf
there are two Power-On Password Bypass Pads on the bottom of the lower
system board, but no instructions on what to do with them. Do I need to
short them out? If so how? Someone else suggested desoldering the
backup battery, but if I can just short two pads, that would be
preferred. Right now its completely disassembled. I have two other
701c machines, but they each have their own problems. Worse case if I
can't clear the password I can try to take the display off this one and
put it on the 701c that has a display problem.
This is probably peripherally helpful, at best, but an SGI Indigo2
has the same setup to clear the password. You short two solder pads on
the system board. IIRC, with the Indigo2, it had to be done powered up.
I just remember that the whole process made me nervous as hell. :\
Doc
25 Jul
25 Jul
12:07 a.m.
Mark,
Are there just pads or are there pins on those pads? On a normal MB the
procedure to drain the CMOS is to short the pins with a standard jumper.
Try shorting the pins for 15 minutes with no power. If that has no
effect, try power with the pins shorted. This is quite a crap shoot.
Some MBs require a jumper on similar pins to enable a BIOS update so
there is no universal procedure.
BTW, I bought a 701c as well. Mine is pretty rough. The battery pack was
swollen and leaking so I need to open up the case and do some cleaning
before I get to see if I have the same problem.
I guess you haven't gotten to the point where you find out if Warp has
the drivers for the 701c or not. Let me know what you find.
Also... the CMOS backup battery is soldered? It's not a nice replaceable
button battery that you can just pop out and replace? Oh joy.
Jim
madodel wrote:
I'm trying to get a TP 701c I bought off of eBay
working to install OS/2
Warp on. But it has a password set in the BIOS. According to the
service manual ftp://ftp.software.ibm.com/pc/pccbbs/mobiles/tpvol2.pdf
there are two Power-On Password Bypass Pads on the bottom of the lower
system board, but no instructions on what to do with them. Do I need to
short them out? If so how? Someone else suggested desoldering the
backup battery, but if I can just short two pads, that would be
preferred. Right now its completely disassembled. I have two other
701c machines, but they each have their own problems. Worse case if I
can't clear the password I can try to take the display off this one and
put it on the 701c that has a display problem.
Mark
3:15 p.m.
Jim Scheef wrote:
Mark,
Are there just pads or are there pins on those pads?
When I finally got it disassembled to the point of removing the lower
mainboard, there really weren't any pads. Just a small device that looked
like it might be a PROM at the place marked on the layout in the pdf I
have. So I tried shorting that out. But it wouldn't boot. Then when I
tried to put it all back together the display case cracked on both sides
where the hinges are. The plastic case is very brittle and breaks way too
easily. I've given up on this one for now.
I have another 701c that I am now working on getting running. It was
working but now all I get is a couple beeps and then it asks for a floppy.
Its such a nifty looking little machine. Its a shame its all plastic.
Hopefully I have a lot less problems disassembling and re-assembling my
daughter's Macbook Pro in a couple of weeks when I have to do a drive
upgrade for her. :-P At least with an aluminum case it shouldn't fall
apart when I try to put it back together.
On a normal MB the
procedure to drain the CMOS is to short the pins with a standard jumper.
Try shorting the pins for 15 minutes with no power. If that has no
effect, try power with the pins shorted. This is quite a crap shoot.
Some MBs require a jumper on similar pins to enable a BIOS update so
there is no universal procedure.
I know and the only mention in the docs is to call IBM service. That was
why I asked here before trying it.
BTW, I bought a 701c as well. Mine is pretty rough. The battery pack was
swollen and leaking so I need to open up the case and do some cleaning
before I get to see if I have the same problem.
I guess you haven't gotten to the point where you find out if Warp has
the drivers for the 701c or not. Let me know what you find.
Warp should support the 701c. I don't know if the 701c ever came preloaded
with OS/2 though. All the ones I see on eBay have win 3.1 or win95 on
them. But of course you will need the external floppy drive to install it
and a copy of Warp that is on 3.5in floppies. I'll have to get a copy of
Warp on floppies at InfoAge next time I'm there. Or I can build the
floppies from the CD I have here if I can dredge up enough diskettes.
Also... the CMOS backup battery is soldered? It's not a nice replaceable
button battery that you can just pop out and replace? Oh joy.
Yes the one on the lower board is soldered.
Mark
3:30 p.m.
madodel wrote:
I have another 701c that I am now working on getting
running. It was
working but now all I get is a couple beeps and then it asks for a
floppy. Its such a nifty looking little machine. Its a shame its all
plastic.
Couple of beeps followed by floppy-prompt is IBMese for "no bootable
device found".
Sounds like there either isn't a proper boot sector on the hard drive,
or the hard drive is dead.
Peace... Sridhar
3:55 p.m.
Sridhar Ayengar wrote:
madodel wrote:
That was my guess, but both drives I have had worked earlier in the day in
the same machine. But the caddies they are in are plastic and maybe are
warped or maybe the IDE connector inside the machine has a bent pin, but I
can't see anything obvious.
Mark
I have another 701c that I am now working on
getting running. It was
working but now all I get is a couple beeps and then it asks for a
floppy. Its such a nifty looking little machine. Its a shame its all
plastic.
Couple of beeps followed by floppy-prompt is IBMese for "no bootable
device found".
Sounds like there either isn't a proper boot sector on the hard drive,
or the hard drive is dead.
4:14 p.m.
madodel wrote:
That was my guess, but both drives I have had worked earlier in the day
in the same machine. But the caddies they are in are plastic and maybe
are warped or maybe the IDE connector inside the machine has a bent pin,
but I can't see anything obvious.
Could be a misconfigured BIOS. Try running the SPSD.
Peace... Sridhar
I have another 701c that I am now working on getting
running. It was
working but now all I get is a couple beeps and then it asks for a
floppy. Its such a nifty looking little machine. Its a shame its
all plastic.
Couple of beeps followed by floppy-prompt is IBMese for "no bootable
device found".
Sounds like there either isn't a proper boot sector on the hard drive,
or the hard drive is dead.
5841
days inactive
5845
days old
6 comments
4 participants
participants (4)
-
doc＠mdrconsult.com -
madodel＠ptdprolog.net -
ploopster＠gmail.com -
scheefj＠netscape.net