A1706 820-00239 No SSD

[kashitozu]

I have an a1706 820-00239
can't find the hard drive, no trace of oxidation
we go in to do the installation, hard drive not found
we measured all the voltages around the nand I have the PP3v3_2v7_nand_VCC: 2.69V
PP1v8_SSD_Cold: 1.8V
PP00V9_SSDREG : 0.9V
Do you think the problem is with the NAND or the U8600?

 

[2informaticos]

All J9600 contacts good?
What the client said about fault?

 

[kashitozu]

J9600 is good and no trace of oxidation
and the customer said it just happened

 

[2informaticos]

Compare the signals on J9600 right side (reffering to schematic) with good board.
Find the proper test points...

 

[kashitozu]

I compared everything and I have only the pin 36 “LPSR_EN_LB_L” that instead of having 0.470 I have 0.549

 

[2informaticos]

You should check voltage, not only diode mode.

 

[kashitozu]

what voltage you need ? because i have try the nand voltage and its good

 

[2informaticos]

I mean signal levels, not only power rails...