About changing pcbs

Hello to all ,

I have a little confusion about changing pcbs of Maxtor drives as my post earlier i asked that some pcbs have ROM chip and some dont , I need to know that if i have a pcb with ROM chip present and one that doesnot have ROM chip and both pcbs are identical can i change them both with each other and also solder the ROM chip to the pcb that doesnot have ROM chip and connect to hdd will it work ?

I am working with the calipso drives 6y80 series and the serial ROM chip .

Thanks .

U don't need to put a rom chip if the PCB doesn't contain one.
In this case the ROM is masked in the processor already.
regards,
pepe

thanks for reply

So in this case i have to rewrite ROM if its clicking on the other pcb.
or there can be any other reason .

You want to rewrite masked Rom?

Yes , Why is it not possible ?

rameez wrote:Yes , Why is it not possible ?

http://forum.hddguru.com/howto-how-to-r ... t5977.html

thanks for reply but i need to rewrite masked ROM there is nothing about that in the topic u gave link of .

Hi,
It is not possible to rewrite masked ROM !!!
http://www.techweb.com/encyclopedia/def ... masked+ROM
You must use the logic board with correct version of masked ROM in CPU

Mikippp

Thanks for reply

I have many hdd with Corrupted Rom code the hdd is Maxtor 6e040l0 and it shows Maxtor N40p NAR63G4Z After loading Rom from LDR it shows Maxtor 6e040l0 Nar61590 and works perfectly after that after restart the hdd returns to its the same state what to do now ?

rameez
Why are you saying that the problem is with ROM?

Because this is showing invalid ROM code : NAR63G4Z .
And after i load ROM from LDR the ROM code changes to its ok state NAR61590 .

Problem is in SA... not in logic board...
HDD have defects in SA / corrupted SA modules...

Mikippp

no modules are currupt after loading the LDR i checked the SA found no errors in modules then i checked the Surface of SA no errors found .

If no errors are found in SA... - Regenerate translator...
PC-3000 Demo Video

Mikippp

did that too "Translator regenerated Successfully" .

rameez
That code is perfectly valid. "Z" at the end means "system area is damaged " :wink:

maysoft wrote:rameez
That code is perfectly valid. "Z" at the end means "system area is damaged "

the end code Z indicates that the SA is damaged but did u see the before the Z NAR6"3G4"Z that shows that this is because of ROM , this code comes when hdd in safe mode .

I fixed the problem by the way some idiot replace pcb with another mismatching pcb as u know there are two kinds of pcbs one with external serial ROM chip and one with masked ROM chip i changed it with the external ROM chip . now hdd ok .

Thank you all for help .