1.Place meter probes on black and white wires of transformer connector. Check meter reading.

Meter Reading for Black and White Wires	Required Action
42 to 58 VAC	Transformer OK
Out of range	Perform Resistance Test

2.Place meter probes on red and orange wires of transformer connector. Check meter reading.

Meter Reading for red and orange wires	Required Action
23 to 43 VAC	Transformer OK
Out of range	Perform Resistance Test

1.Unplug chair power cord.

2.Tag and disconnect four transformer wires from inlet.

3.Place meter probes on blue/white and brown/white wires. Check meter reading.

4.Place meter probes on blue and brown wires. Check meter reading.

Meter Reading	Required Action
Less than 10 ohms	Transformer OK
OL or more than 10 ohms	Replace transformer.