Kyocera TASKalfa 3551ci

9. Toner fan motor 1, 2 does not operate (45 ppm/55 ppm model only).

Causes	Check procedures/corrective measures
1. Defective connector cable or poor contact in the connector.	Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Toner fan motor 1, 2 and engine PWB (YC19)
2. Defective motor.	Replace the toner fan motor 1 or 2.
3. Defective PWB.	Replace the engine PWB and check for correct operation

10. Developer fan motor 1, 2 does not operate.

Causes	Check procedures/corrective measures
1. Defective connector cable or poor contact in the connector.	Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer fan motor 1, 2 and front PWB (YC6) Front PWB (YC3) and engine PWB (YC7)
2. Defective motor.	Replace the developer fan motor 1 or 2.
3. Defective PWB.	Replace the front PWB or engine PWB and check for correct operation

11. Exhaust fan motor 1, 2 does not operate (45 ppm/55 ppm model only)

Causes	Check procedures/corrective measures
1. Defective connector cable or poor contact in the connector.	Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Exhaust fan motor 1, 2 and engine PWB (YC19)
2. Defective motor.	Replace the exhaust fan motor 1 or 2.
3. Defective PWB.	Replace the engine PWB and check for correct operation

12. LSU fan motor does not operate.

Causes	Check procedures/corrective measures
1. Defective connector cable or poor contact in the connector	Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. LSU fan motor and front PWB (YC16) Front PWB (YC2) and engine PWB (YC10)
2. Defective motor.	Replace the LSU fan motor.
3. Defective PWB.	Replace the front PWB or engine PWB and check for correct operation