LPSU Manual Test Button Missing

1 min read·Updated Jul 2026
Quick
answer

If the manual test button on your LPSU is missing, use the stick end of a cotton swab to safely actuate the switch.

Applies toAll machinesTopicTroubleshooting

Is your manual test button on your LPSU missing? No worries, we have a quick workaround:

LPSU with missing test button

If there is ever a need to depress the test button, pulling (or cutting) the cotton off of a swab makes a quick, safe way to actuate the switch by pressing where indicated below:

LPSU showing where to press with swab stick to actuate the test switch

Still stuck?

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