Code :

Code: U1-2330, U1-2340
Display: Error #U1-2330 Turn off then on Error #U1-2340 Turn off then on
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: Error #U2-1112 Turn off then on Error #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.

Code: U3-3313, U3-3314
Display: Document jam. Remove jam
Description: A document jam was detected in the ADF unit.
Remedy: 1) Remove the jammed paper from ADF unit. (Refer to 4.1.3.1) 2) If the error persists, turn the machine off then on. 3) If the document jam occurs continually, open the ADF cover-top. Check if the ADF pick up roller is contaminated or worn out. Clean or replace it. 4) If the pick up roller is OK, check the followings. a) Check if the ADF motor is working normally. b) Check if the connector on the ADF joint board is connected correctly. 5) If the problem persists, replace the ADF unit.

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