• Code: S6–3210
• Display: Network Failure: #S6-3210. Turn off then on. Call for service if the problem persists
• Description: Departments along with wireless module is abnormal.
• Remedy: 1) Turn the machine off, and then turn on. 2) Check the setting is proper – AP setting of wireless lan and p1) Turn the machine off. Re-install the fuser unit. Then turn the machine on. Is the error message is disappeared? 2) If the problem persists, turn the machine off and remove the fuser unit. Check if the fuser connector is connected properly. Check if the input voltage is normal.rinter configuration.

• Code: U1–2312, U1–2315
• Display: Fuser Unit Failure #U1-2312 : Turn off then on. Fuser Unit Failure #U1-2315 : Turn off then on.
• Description: The temperature control of fuser unit is abnormal. (Open Heat Error)
• Remedy: 1) Turn the machine off. Re-install the fuser unit. Then turn the machine on. Is the error message is disappeared? 2) If the problem persists, turn the machine off and remove the fuser unit. Check if the fuser connector is connected properly. Check if the input voltage is normal.

• Code: U1–2320, U1–2330, U1–2334
• Display: Fuser Unit Failure: #U1-23.
• Description: The temperature control of fuser unit is abnormal. (Low Heat Error or Over Heat Error)
• Remedy: 1) Turn the machine off. Re-install the fuser unit. Then turn the machine on. Is the error message is disappeared? 2) If the problem persists, turn the machine off and remove the fuser unit. a) Check if the fuser connector is connected properly. b) Check if the input voltage is normal. c) Check if the thermistor is twisted or contaminated.

• Code: U1–2340, U1–234H
• Display: Fuser Unit Failure: #U1-23
• Description: The temperature control of fuser unit is abnormal. (Low Heat Error or Over Heat Error)
• Remedy: 1) Turn the machine off. Re-install the fuser unit. Then turn the machine on. Is the error message is disappeared? 2) If the problem persists, turn the machine off and remove the fuser unit. a) Check if the fuser connector is connected properly. b) Check if the input voltage is normal. c) Check if the thermistor is twisted or contaminated.

• Code: U2–1112, U2–1113
• Display: LSU Unit Failure #U2-1112. Turn off then on. LSU Unit Failure #U2-1113. Turn off then on.
• Description: LSU Motor does not work normally.
• Remedy: 1) Execute the LSU motor test in EDC program. Check the LSU motor operation sound. 2) If there is no sound, remove the right cover. Check if the LSU harness on the main board is connected properly. (picture- ,) 3) If it is OK, remove the top cover. Check if the LSU harness on LSU board is connected properly. (picture- ,) 4) Check if the LSU harness is defective. (picture- ,) 5) Reconnect the LSU harness and then execute the LSU motor test in EDC program again. 6) If the problem persists, replace the LSU. 7) If the problem persists after replacing LSU, replace the main board.