• Code: 173.01
• Description: 173.01 Service engine error LVPS cooling fan failure The LVPS cooling fan is not functioning.
• Remedy: 1 Check the LVPS sub cooling fan. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the LVPS sub cooling fan. Go to “LVPS sub cooling fan removal”. Does the error continue? Go to step 3. Problem resolved 3 POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal”. Problem resolved

• Code: 174.01
• Description: Service engine error Rear left lower cooling fan failure The HVPS cooling fan is not functioning.
• Remedy: 1 Check the charge roll HVPS cooling fan. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the charge roll HVPS cooling fan. Go to “Charge roll HVPS cooling fan removal”. Does the error continue? Go to step 3. Problem resolved 3 POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal”. Problem resolved

• Code: 175.01
• Description: Service engine error Front right cooling fan failure The front right cooling fan is not functioning.
• Remedy: 1 Check the front right cooling fan. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the front right cooling fan. Go to “Front right cooling fan removal”. Does the error continue? Go to step 3. Problem resolved 3 POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal”. Problem resolved

• Code: 175.03
• Description: Service engine error PC/developer drive motor cooling fan failure The PC/developer drive motor is not functioning.
• Remedy: 1 Check the PC/developer drive motor cooling fan. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the PC/developer drive motor cooling fan. Go to “PC/ developer drive motor cooling fan removal”. Does the error continue? Go to step 3. Problem resolved 3 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal”. Problem resolved

• Code: 175.04
• Description: Service engine error Front left cooling fan failure The front left cooling fan is not functioning.
• Remedy: 1 Check the front left cooling fan. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the front left cooling fan. Go to “Front left cooling fan removal”. Does the error continue? Go to step 3. Problem resolved 3 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal”. Problem resolved

• Code: 175.05
• Description: Service engine error Suction fan failure The suction fan is not functioning.
• Remedy: 1 Check the suction fan. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the suction fan. Go to “Suction fan removal”. Does the error continue? Go to step 3. Problem resolved 3 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal”. Problem resolved

• Code: 175.06
• Description: Service engine error Rear upper cooling fan failure The rear upper cooling fan is not functioning.
• Remedy: 1 Check the front upper cooling fan. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the front upper cooling fan. Go to “Front upper cooling fan removal”. Does the error continue? Go to step 3. Problem resolved 3 POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal”. Problem resolved

• Code: 175.07
• Description: Service engine error Rear upper center cooling fan failure The rear upper center cooling fan is not functioning.
• Remedy: 1 Check the fuser driver PCBA cooling fan. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the fuser driver PCBA cooling fan. Does the error continue? Go to step 3. Problem resolved 3 POR the machine. Does the error continue? Replace the lower engine PCBA. Go to “Lower engine PCBA removal”. Problem resolved