Samsung SLK7500GX

• Code: A2-1521, A2-1523
• Display: 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
• Description: • Duplex fan error : A2–1510 / A2–1511 / A2–1521 / A2–1523
  Fan does not operate or fan signal is abnormal.
• Remedy: 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.

• Code: A2-2810, A2-2811
• Display: 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
• Description:
  • Deve fan error : A2–2810 / A2–2811 / A2–2821 / A2–2823
  Fan does not operate or fan signal is abnormal.
• Remedy: 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.

• Code: A2-2821, A2-2823
• Display: 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
• Description: • Deve fan error : A2–2810 / A2–2811 / A2–2821 / A2–2823
  Fan does not operate or fan signal is abnormal.
• Remedy: 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.

• Code: A2-2910, A2-2911
• Display: 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
• Description: • OPC blow-in fan error : A2–2910 / A2–2911 / A2–2920 / A2–2921
  Fan does not operate or fan signal is abnormal.
• Remedy: 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.

• Code: A2-2920, A2-2921
• Display: 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
• Description: • OPC blow-in fan error : A2–2910 / A2–2911 / A2–2920 / A2–2921
  Fan does not operate or fan signal is abnormal.
• Remedy: 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.

• Code: A3-2113
• Display: The CTD sensor is dirty. Please clean it with soft cloth or paper.
• Description: CTD sensor window is contaminated.
• Remedy: NOTE
  If the pop up window for cleaning is displayed, follow it.
  1) Open the side cover.
  2) Clean the sensor window with a soft cloth.
  3) Close the side cover.
  4) Enter SVC mode. Select the “CTD Sensor Cleaning” (Diagnostics Image Management > Auto Color Tone Adjustment Condition > CTD Sensor Cleaning)
  5) When pop up appears, select the “Yes” button.
  NOTE
  a) CTD sensor calibration will start. Then “CTD sensor failure” error will be solved
  b) If you don’t execute the CTD sensor cleaning in SVC mode, error message persists.