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Before you begin, read Micah's page and the related links on how to use our equipment (see: Test Equipment).
Relevant page on testing MSXII: Precharge Revisions
Initial board validation:
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Still before plugging in the capacitors and HV, enable precharge and probe the test points ISO_1, ISO_2 and DISC_GATE. These should all be reading a 12V signal. If ISO_1 or ISO_2 isn't reading properly, double-check the pins on the isolated DC/DC U9 aren't shorted and connectivity between components is good. If DISC_GATE isn't reading, do the same with charge pump DC/DC U4.
Precharge Test points:
Relevant page on testing MSXII: Precharge Revisions
Connect the HV line (12V or similar) and the capacitors.
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Repeat this test, except instead of checking the voltage on the capacitor, measure the test points COMP_OUT, AND_OUT, ISO_LATCH_OUT, LATCH_OUT, and ISO_2. The latter 4 should all be logic low to start and only send a 12V signal when the condition above is met. COMP_OUT will probably output a logic high when both pins are unpowered at the start. Note the times taken for each output to reach logic high. Also check the behaviour of LATCH_OUT to ensure it doesn't oscillate during the transition from logic high to logic low. Examples of transient tests can be seen in the related page posted above (recommended read for understanding of the board regardless).
CAN tests:
Thermistor tests:
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