34405A User’s and Service Guide 117
Disassembly and Repair 5
Self-Test Errors
The following errors indicate failures that may occur during a self- test.
NOTE
On the remote interface, a self–test failure will generate SCPI error –330 and a
supplemental message indicating one of the test numbers shown below. On the front
panel, only the failing test is shown.
Ta ble 2 2 Self-Test Error Numbers
Error Number Description
626 I/O processor failed self-test
630 Unstable Oscillator
631 Program ROM checksum failed
632 Program RAM failed
633 Display board failed
634 ADC failed
635 Interface board failed
636 DC Path error
637 AC path attenuated error
638 AC path attenuated 100 error
639 AC path attenuated 1000 and amplified 10 error
640 Frequency measurement path failed
641 Constant Current 0.2V/1kohm error
642 Constant Current 0.2V/10kohm or amplification of 11 error
643 Constant Current 0.8V/100kohm or amplification of 11 error
644 Constant Current 1V/1.1Mohm or amplification of 11 error
34405A users guide.book Page 117 Saturday, September 2, 2006 3:38 PM
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