DFI LP UT P35-T2R Voltage Measurement Points
Extreme care needs to be taken when measuring onboard voltages. This especially true in this instance measuring the GTL voltages. The SMD MOSFETS are very difficult to probe. An SMD type probe is needed, fully insulated except at the tip. Since voltage changes as small as 0.005 volts is being measured a precision, calibrated, 4 digit DMM or preferably an oscilloscope should be used.