Repair manual

PS2 750 Repair
Repair.fm 83
6.4.1.3 Power Supply Testing
Air Test Cable
Air test cable insulation for resistance using a Megger tester between
conductors.
—Replace power supply cable if readings fall below 30 MΩ.
Water Test Cable
1. Water test cable insulation for resistance using a water tank. This
testing method may detect minute insulation flaws that air test will
not.
2. Submerse cable in a water tank with conductors on both ends of
cable above water level. After 24 hours, test cable insulation using
a Megger tester between conductors and metal container.
—Replace power cable if readings fall below 30 MΩ.
Test Capacitor
1. Dry capacitor (k) thoroughly before testing.
IMPORTANT: If using heat gun, DO NOT exceed temperatures of
60°C (140°F).
2. Set circuit tester to 100K
Ω at resistance and connect between both
terminals of the capacitor.
—Reuse capacitor when test indicator shakes once and comes
back slowly.
—Replace capacitor when test indicator shakes continuously and
comes back quickly.
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