Technical data

70 7000 Series Oscilloscopes Service Guide
4 Troubleshooting
Equipment required for troubleshooting
The equipment listed in this table is required to troubleshoot the
oscilloscope.
Table 12 Equipment Required to Troubleshoot the Oscilloscope
To check out the oscilloscope
1 Disconnect any external cables from the front panel.
2 Disconnect the power cord, then remove the cabinet
following the instructions on page 83.
Equipment Critical Specifications Recommended Model/Part
Digital multimeter Accuracy ±0.05,% 1 mV resolution Agilent 34401A
Oscilloscope Capable of measuring ≥ 500 MHz signal.
1 M
Ω input impedance.
Agilent
DSO6102A, MSO6102A,
DSO7104A, or MSO7104A
CAUTION
USE AN EXTERNAL FAN TO AVOID OVERHEATING COMPONENTS !
When you remove the oscilloscope cover and main shield, use an external fan to
provide continuous air flow over the heat sinks. Air flow over the heat sinks is
reduced when the cover and main shield are removed, which leads to higher than
normal operating temperatures. Have the fan blow air across the system board
where the heat sinks are located. Otherwise, damage to the components can
occur.
If the cover of a 7000A Series oscilloscope is removed but the main shield remains
installed and the bottom holes are not blocked, the instrument will cool properly.
WARNING
HAZARDOUS VOLTAGES EXIST — HIGH VOLTAGE IS PRESENT ON POWER
SUPPLY HEAT SINKS !
The power supply heat sinks of the oscilloscope 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!
7000 service guide.book Page 70 Thursday, October 16, 2008 12:18 PM