Agilent Technologies 6000 Series Service Manual page 85

WA R N I N G
6000 Series Oscilloscopes Service Guide
4 Perform a continuity check on the "DC cable" (item
page 162). If the cable is shorted or open, replace it. If not,
continue to the next step.
5 Reconnect the "DC cable" to the power supply, but not to
the system board.
HAZARDOUS VOLTAGES EXIST — HIGH VOLTAGE IS PRESENT ON DSO6000L
SERIES POWER SUPPLY HEAT SINKS !
The power supply heat sinks of the 6000L Series oscilloscopes are at a high
potential. This presents an electric shock hazard. Protect yourself from electric
shock by keeping this area covered or by not coming in contact with the heat sinks
when the power cord is attached to the oscilloscope!
6 Connect the power cord and check the power supply
voltage between pins 1 and 6 of the system board side of
the "DC cable". The voltage should be 15 V ±10%.
If the voltage is correct, then test the system board
•
(see page 86).
If the voltage is not correct, then replace the power supply
•
(see page 138).
Troubleshooting 4
W1 on
85