Thread: Dell The AC power adapter type cannot be determined and shield cablefor id chip??
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Old April 17th 09, 04:42 AM posted to alt.comp.hardware
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Default Dell The AC power adapter type cannot be determined and shieldcable for id chip??
I found the schematics.
http://img16.imageshack.us/img16/2240/psidl77.jpg
http://img16.imageshack.us/img16/4444/iotopsidl.jpg

The DS2501 data pin is connected to power jack center pin and then -
L77-I/O PS_ID and D108 pin3.
The AC adapter jack center pin has no voltage when not connected to
laptop.
When connected, center pin has 3.23V.

According to a laptop repair website, some D600 motherboard has burnt
L77 and D108. In this case, I/O must be replaced.