Power Supply Trouble Isolation - Agilent Technologies Infiniium 90000 A Service Manual

Power Supply Trouble Isolation

W A R N I N G
SHOCK HAZARD!
The maintenance described in this section is performed with power supplied to the oscilloscope
and with the protective covers removed. Only trained service personnel who are aware of the
hazards involved should perform the maintenance. Read the safety summary at the back of this
book before proceeding. Failure to observe safety precautions may result in electric shock
W A R N I N G SHOCK HAZARD!
Once the bulk 12V power supply is removed from the oscilloscope, two AC leads located on the
supply are exposed and severe shock can result if touched. Extreme care should be taken to not
contact these leads when removing or testing the bulk 12V power supply.
For information on how to replace assemblies, see "Replacing Assemblies," beginning on page
89.
Chapter 4: Troubleshooting

Power Supply Trouble Isolation

57