Samsung MultiXpress K7 Series Service Manual page 328

4. Troubleshooting
► Error Code
A2–1510 / A2–1511 / A2–1521 / A2–1523
A2–2810 / A2–2811 / A2–2821 / A2–2823
A2–2910 / A2–2911 / A2–2920 / A2–2921
► Error message
Fan Failure: #A2-xxxx. Turn off then on. Call for service if the problem persists
Fan Failure: #A2-xxxx. Open the door, then close it. Call for service if the problem persists
► Symptom
Fan does not operate or fan signal is abnormal.
► Troubleshooting method
NOTE
• Duplex fan error : A2–1510 / A2–1511 / A2–1521 / A2–1523
• Deve fan error : A2–2810 / A2–2811 / A2–2821 / A2–2823
• OPC blow-in fan error : A2–2910 / A2–2911 / A2–2920 / A2–2921
1) Turn the machine off then on. If the problem persists, check the followings.
2) Check the connection of the corresponding fan and main board.
3) If the connection is OK, enter SVC mode. Execute the fan test.
(Diagnostics > Engine Diagnostics > Engine Test Routines)
a) If the fan is not operational,
i) Check the power(24V).
• If the power is abnormal, check the SMPS board. If the SMPS board is defective, replace it.
• If the SMPS board is normal, replace the corresponding fan.
• If the error persists after replacing the fan, replace the main board.
b) If the fan is operational,
i) Check the fan signal (3.3V) as connected or disconnected.
• If the fan signal as disconnected is abnormal, replace the main board.
• If the fan signal as connected is abnormal, replace the corresponding fan.
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