Technical data

Troubleshooting 4
6000 Series Oscilloscopes Service Guide 95
4 Perform a continuity check on the “DC cable” (item W1
on page 167). 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.
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 96).
• If the voltage is not correct, then replace the power
supply
(see page 150).
WARNING
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!
6000_series_service_guide.book Page 95 Friday, March 23, 2007 2:43 PM