Service Forum

[klikkete]

Hi,
i have a thinkpad A21m with crc1 error.
I would program the chip with another .bin code from another a21m.
Can you hel me for the programmer?

If i unsold/remove completly the chip 24rf08ct.... the laptop boot or not?

Thanks

Andrea

[victor]

The laptop won't boot without the eeprom. You'll have EAIA error.

The best way is to correct the original dump. The eeprom writer is not free, sorry.

[klikkete]

Hi Victor,
thanks for your response.
When, the laptop without the chip don't boot
I have read on the newsgroup that the 390 without chip boot...

On the newsgroup i have read that correct crc1 error on the thinkpad A21m is much riskiusly because the alimentation problem can broke the chip.
It's true?

Ciao.

Andrea

[victor]

A2X series had many problems not only with the power regulators. T20-22 had problems as well. However, a CRC error can appear as a result of a power loss but not necessary due to a defective power source.

So the answear is YES and NO.

[klikkete]

Thanks Victor.

my doubt is : if reprogram the eprom and then my computer stops to work the same one?
If mine motherboard has of the feeding problems I spend of the money and I do not resolve nothing in how much crc error return after little time?

[victor]

You must know better if you have a defective laptop there and if it worth spending some money on it.