Repair manual

Repair PS4 7503HH, PS4 7503HF, PS4 11003HH, PS4 11003HF

Repair.fm 178

—Replace the power supply cable if the outer sheath is damaged

or exposing interior insulation or protective materials. No tape

repair is permitted.

6.8.1.3 Power Supply Testing

1. Air test the cable insulation for resistance using a Megger tester

between conductors.

—Replace power cable (k) if readings fall below 30 MΩ.

2. Water test the cable insulation for resistance using a water tank.

This testing method may detect minute insulation flaws that the air

test will not. Submerse the cable in a water tank with conductors on

both ends of cable above the water level. After 24 hours, test the

cable insulation using a Megger tester between conductors and

metal container.

—Replace power cable (k) if readings fall below 30 MΩ.

G = Green 1 = Coil

B = Black 2 = Circle Thermal Protector

W=White

R=Red

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