C-2 Description of Self Test Items
C.1.3 Z0202 Display Count Status Test
Top test item
PC Module and MF FPGA Interconnection Test
Test content
Check whether the black screen fault occurs during the Doppler running.
During the test, the self-test program reads the black screen count in the startup phase in the
integral life cycle of the machine — start count (StartingCount) and the black screen count in
the Doppler running phase in the integral life cycle of the machine — work count
(WorkingCount).
Analysis to test failure
If WorkingCount is not 0, the black screen fault occurs on the machine in the Doppler running
phase. StartingCount is used only for reference and is not a basis for fault judgment.
Note: The final result of the test item is NaN regardless of the value of WorkingCount and
StartingCount.
Suggestion to failure test
If WorkingCount is not 0, it is recommended to replace the PC carrier.
C.1.4 Z0203 Fan Speed Test
Top test item
PC Module and MF FPGA Interconnection Test.
Test Content
Control the speed of 9 fans by ADT7462 drive to decide whether the fan speed can be controlled
or not. Set 25% of working speed first, and then decide whether the fan is still working; set 100%
working speed, and then decide whether the fan is still working; compare the changes of the fan
speed under these conditions.
Analysis to Test Failure
If the test result is Error, it indicates the error happens when the drive controls the hard disk.
If the test result is FAIL, check the information that the test report outputs. The report says “…fan
speed: fan speed fails”, which indicates the fan speed becomes abnormal; if the report says “the
speed control fails:…”, which indicates the fan speed control becomes abnormal.
Suggestion to Test Failure
a) If the result is Error, it is recommended to restart the device to retest first, and then restore the
device, and replace the PC carrier board finally.
b) If the fan speed and fan control become abnormal, it is recommended to check the connection
among each fan first, and then replace the fan assembly.
C.1.5 Z0204 Back End Voltage Monitor Test
Top test item
PC Module and MF FPGA Interconnection Test.
Test content
Read+5V, +2.5V, +1.8V, +1.5V, +1.2V, -5.7V, +3.3V and voltage value of button battery via
ADT7462, and decide whether it meets the requirement.
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