• Code: 121.09
• Description: Service fuser error Fuser temperature lag error
• Remedy: 1 Check the fuser assembly. Is the above component properly connected? Go to step 2. Remove foreign particles, and replace the connections. 2 Replace the fuser assembly. Go to “Fuser assembly removal” . Does the error remain? 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: 121.10
• Description: Service fuser error Heat belt rotation failure
• Remedy: 1 Check the fuser assembly. Is the above component properly connected? Go to step 2. Remove foreign particles, and replace the connections. 2 Replace the fuser assembly. Go to “Fuser assembly removal” . Does the error remain? 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: 121.11
• Description: Service fuser error Fuser temperature recovery failure.
• Remedy: 1 Check the fuser assembly. Is the above component properly connected? Go to step 2. Remove foreign particles, and replace the connections. 2 Replace the fuser assembly. Go to “Fuser assembly removal” . Does the error remain? 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: 121.12
• Description: Service fuser error Incorrect fuser
• Remedy: 1 POR the machine. Does the error continue? Replace the fuser assembly. Go to “Fuser assembly removal” . Problem resolved

• Code: 121.13
• Description: Service fuser error Fuser thermostat failure
• Remedy: 1 Check the fuser assembly. Is the above component properly connected? Go to step 2. Remove foreign particles, and replace the connections. 2 Replace the fuser assembly. Go to “Fuser assembly removal” . Does the error remain? 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: 126.01
• Description: Service fuser error Fuser interface failure
• Remedy: 1 Check the fuser driver PCBA. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” . Does the error remain? 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: 126.02
• Description: Service fuser error Fuser driver to upper engine PCBA interface failure
• Remedy: 1 Check the fuser driver PCBA. Is the above component properly connected? Go to step 2. Replace the connections. 2 POR the machine. Does the error continue? Go to step 3. Problem resolved 3 Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” . Does the error continue? Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” . Problem resolved

• Code: 126.03
• Description: Service fuser error Fuser driver communication failure
• Remedy: 1 Remove the sub LVPS PCBA. Go to “Sub LVPS PCBA removal” . Check the fuser driver PCBA. Is the above component properly connected? Go to step 2. Replace the connections. 2 Replace the fuser driver PCBA. Go to “Fuser driver PCBA removal” . Does the error remain? 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