Error Messages 4
Self-Test Error Messages
E3632A User’s Guide 135
Self-Test Error Messages
The following errors indicate failures that may occur during
a self- test. Refer to the Service Guide for more information.
Table 4 - 2 Self-test error messages
601 Front panel does not respond
The main controller U17 (U10 for serial MY53xx6xxx) attempts to establish serial communications with
the front panel controller U7 (U602 for serial MY53xx6xxx) on the front panel board. During this test, the
U7 (U602 for serial MY53xx6xxx) turns on all display segments. Communication must function in both
directions for this test to pass. If this error is detected during power-on self-test, the power supply will
beep twice. This error is only readable from the remote interface.
602 RAM read/write failed
This test writes and reads a 55h and AAh checker board pattern to each address of RAM U14. Any
incorrect readback will cause a test failure. This error is only readable from the remote interface.
603 A/D sync stuck
The main controller issues an A/D sync pulse to U17 and U18 to latch the value in the ADC slope
counters. A failure is detected when a sync interrupt is not recognized and subsequent time-out occurs.
604 A/D slope convergence failed
The input amplifier is configured to the measure zero (MZ) state in the 10 V range. This test checks
whether the ADC integrator produces nominally the same number of positive and negative slope
decisions (±10%) during a 20 ms interval.
605 Cannot calibrate rundown gain
This test checks the nominal gain between integrating ADC and the U17 on-chip ADC. This error is
reported if the procedure can not run to completion due to a hardware failure.
606 Rundown gain out of range
This test checks the nominal gain between the integrating ADC and the U17 on-chip ADC. The nominal
gain is checked to ±10% tolerance.
607 Rundown too noisy
This test checks the gain repeatability between the integrating ADC and the U17 on-chip ADC. The gain
test (606) is performed eight times. Gain noise must be less than ±64 LSB of the U17 on-chip ADC.
608 Serial configuration readback failed
This test re-sends the last 3 bytes of serial configuration data to all the serial paths (SERDAT, SERBCK,
SERCLK). The data is then clocked back into U18 and compared against the original 3 bytes sent. A
failure occurs if the data do not match. This tests checks the serial data path through U22.
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