OK...
I've got QUANTA HK2 (DA0HK2MB6E0) which is completely dead...
I'm stuck at PU9 (PM6686TR) as don't have DH2 voltage from pin26...
As far as I understand:
-VIN comes to pin6 (got 19V)
-that should activate EN_LDO (got 5V)
-EN_LDO should go to LDO (got 5V)
-also should activate EN2 (got 3.6V)
-& finally EN2 should activate DH2 (got 0V) & should have 3V+ which should activate LX2 and then go to SIO...
Am I wrong???
Any ideas what else to check???
These Sandy Bridge mobos are so complicated...So many voltages
I'm attaching schematic...this one is for HK1 (can't find for HK2), but at least the charging and 3&5V circuits looks the same...
ALSO NOTICED THAT PR275 & PC191 IS MISSING!!!
I've got QUANTA HK2 (DA0HK2MB6E0) which is completely dead...
I'm stuck at PU9 (PM6686TR) as don't have DH2 voltage from pin26...
As far as I understand:
-VIN comes to pin6 (got 19V)
-that should activate EN_LDO (got 5V)
-EN_LDO should go to LDO (got 5V)
-also should activate EN2 (got 3.6V)
-& finally EN2 should activate DH2 (got 0V) & should have 3V+ which should activate LX2 and then go to SIO...
Am I wrong???
Any ideas what else to check???
These Sandy Bridge mobos are so complicated...So many voltages
I'm attaching schematic...this one is for HK1 (can't find for HK2), but at least the charging and 3&5V circuits looks the same...
ALSO NOTICED THAT PR275 & PC191 IS MISSING!!!
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