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Chapter 6 Service
Troubleshooting Hints
6
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 50). The instrument’s circuits allow
troubleshooting and repair with basic equipment such as a 6
½ digit
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.
Unit Reports Error 705
This error may be produced if you accidentally turn off power to the
unit during a calibration or while changing a non-volatile state of the
instrument. Recalibration or resetting the state should clear the error.
If the error persists, a hardware failure may have occurred.
Unit Fails Self-Test
Ensure that all terminal connections (both front panel and rear terminals)
are removed while the self-test is performed.
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