Toshiba T4500 'P30' error problem

When this happened to me it was due to using a Compaq power pack instead of the correct Toshiba one. When I changed to the correct one the problem did not re-occur. The power output voltage of the Compaq version was too low.

My sister's T4500 has this same P30 error message and will not boot. It is plugged into the wall and it has the Toshiba internal battery pack. Since there is no reference in the manual, what does the P30 error message actually mean?

I recently purchased 2 "dead" T4500s, one of which had this "P30" error. I cured this by fitting the psu board from the other T4500, so it seems that in this case it is not actualy the battery pack that was causing the problem.

p30 eror code on t4600c how dio you fix this problem

We have found (marie@tri-gon.net and margret@live-evil.com) the fix for the p30 and p32 error codes on the T4700ct. First arm yourself with $19.95 +$4 shipping, then go to http://www.jameco.com. Order part #172671 which is the power supply table top regulating 12vdc/2..9 Amp. Wait a couple of days for it to arrive. Plug it into the back of the laptop where the old power supply went. Wait for the cmos battery charge up. You do this by making sure that your computer icon is on your led display. Wait an hour. Fire it on up. This worked for us. Now mind you we have punched, kicked and smacked the computer around in the meantime. However the computer is now purring. It works better then before. The theory behind this is that somewhere between the power supply and the power distribution rectifier there is a smd (surface mount diode) that gave out. We tested the old power supply and we had clean power as specified by toshiba. Now this new power supply being a 12 volts we believe is circumventing the regular path and it is assuming it is a battery that is plugged in. So it avoids the bad rectifier. You may want to try this. All you have to lose is $24 or so.

Sirs, The Toshiba t4500 and t4600 are somewhat similar machines.I recently obtained a t4600 with the same problem. P30 is an out of tolerence 3.3v supply in the power supply.I replaced c29 a 1000uf 6.3vdc cap on the power supply daughter board and the computer boots with no error codes. If you go on the Toshiba site and find service note 779, it explains the various "P" codes. I hope this helps.