Troubleshooting Hints - Keysight 33210A Service Manual

Troubleshooting Hints

This section provides a brief check list of common failures. Before
troubleshooting or repairing the instrument, make sure the failure is
in the instrument rather than any external connections. Also make
sure that the instrument is accurately calibrated within the last year
(see "Calibration Interval", on page 53). The instrument's circuits allow
troubleshooting and repair with basic equipment such as a 6
multimeter.
Unit is Inoperative
• Verify that the ac power cord is connected to the instrument.
• Verify that the front-panel On/Standby switch has been pushed.
Is the display working?
• If the display appears blank, but front-panel keys are lit (and the fan
is working), the display screen saver may be enabled. Press any key
to restore the display.
• If the display appears blank, but front-panel keys are lit (and the fan
is working), the display contrast setting may be too low. Use the
menu to set the display contrast.
Unit Fails Self-Test
Ensure that all terminal connections (both front panel and rear terminals)
are removed while the self-test is performed.
Chapter 6 Disassembly and Repair
Troubleshooting Hints
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