• Code: 175.01
• Description: Service engine error Front right cooling fan failure
• 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
• 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
• 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
• 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
• Remedy: 1 Check the center exhaust fan. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the center exhaust 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

• Code: 175.07
• Description: Service engine error Rear upper center cooling fan failure
• 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

• Code: 175.08
• Description: Service engine error Rear left upper cooling fan failure
• Remedy: 1 Check the upper exhaust fan. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the upper exhaust fan. Go to “Upper exhaust 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: 191.01
• Description: Service engine error Lower engine PCBA detect failure
• Remedy: 1 POR the machine. Does the error remain? Go to step 2. Problem resolved 2 Check the lower engine PCBA. Is the above component properly connected? Replace the lower engine PCBA. Go to “Lower engine PCBA removal” . Go to step 2. Replace the connections. 3 POR the machine. Does the error continue? Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” . Problem resolved