Technical data

Service 2
Self-Test Procedures
E3632A Service Guide 59
631 System DAC test failed
This test checks if the DAC hardware is functional. The main controller U17 (U10 for serial MY53xx6xxx)
sends a reference voltage data to DAC and converts the DAC output to digital data to see if the digital
data is within a valid range.
632 Hardware test failed
This test checks the status of voltage and current error amplifiers for the power circuit of output1. If
both amplifiers are not operational, the power supply will beep and the error annunciator will be lit on.
[1] This error message is only applicable for serial MY53xx6xxx.
Table 2 - 3 Self-test error messages (continued)