Alliance Laundry Systems BU170S Service Manual download pdf (Page 99)

70422201R1

LED OPL and UniLinc Troubleshooting

54.Troubleshooting At Slip Ring Assembly

1. At the slip ring assembly, unplug the slip ring assembly harness on the control side of the slip ring assembly

(Refer to Figure 11).

2. Remove the three (3) screws holding the slip ring assembly to basket shaft.

3. Carefully disconnect the white wire of the slip ring assembly from the set-screw on the basket shaft.

4. Carefully disconnect the black wire of the slip ring assembly from the connector in the basket shaft.

5. Connect one ohm meter probe to the black wire on the basket side of the slip ring assembly, and connect the

other ohm meter probe to the black wire of the slip ring assembly harness. If the metered value is less than 1

ohm, proceed to Step 6. If 1 ohm or greater, replace slip ring assembly and return to Paragraph 52.

6. Connect one ohm meter probe to white wire on the basket side of the slip ring assembly, and connect the other

ohm meter probe to the white wire of the slip ring assembly harness. If the metered value is less than 1 ohm,

proceed to Paragraph 55. If 1 ohm or greater, replace slip ring assembly and return to Paragraph 52.

55.Troubleshooting From Slip Ring Assembly to Moisture Sensing Baffle

and Basket

1. Remove three (3) screws holding slip ring assembly to basket shaft.

2. Carefully disconnect the white wire of the slip ring assembly from the set-screw on the basket shaft.

3. Carefully disconnect the black wire of slip ring assembly from the connector in the basket shaft.

4. Connect one ohm meter probe to the connector in the basket shaft. Connect the other ohm meter probe to the

basket shaft itself. If the metered value is infinite resistance, open load (OL), proceed to Step 5. If not, remove

machine basket and proceed to Paragraph 56.

5. Create a direct short between basket and moisture sensing baffle (Refer to Figure 10).

6. Connect one ohm meter probe to the connector in the basket shaft. Connect the other ohm meter probe to the

basket shaft itself. If the metered value is less than 1 ohm, circuit is functioning properly; double-check

machine configuration and cycle programming. If 1 ohm or greater, remove machine basket and proceed to

Paragraph 56.

56.Troubleshooting from Basket Shaft to Moisture Sensing Baffle with

Machine Basket Removed

1. Disconnect and remove slip ring assembly before removing machine basket.

2. Remove machine basket.

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Alliance Laundry Systems BU170S Service Manual Page 99