• Code: S7-1110
• Display: Failure: #S7-1110. Turn off then on
• Description: 24V power for main board is less than 1.5V.
• Remedy: 1) Turn the machine off. 2) Unplug the power cable. 3) Remove the rear cover. 4) Replace the SMPS board(110V: JC44-00149B, 220V: JC44-00150B) 5) Assemble the rear cover. Turn the machine on.

• Code: S7-1210
• Display: Failure: #S7-1210. Turn off then on
• Description: 5V power for main board is less than 0.88V.
• Remedy: 1) Turn the machine off. 2) Unplug the power cable. 3) Remove the rear cover. 4) Replace the SMPS board(110V: JC44-00149B, 220V: JC44-00150B) 5) Assemble the rear cover. Turn the machine on.

• Code: S7-2110
• Display: Fuser Failure: #S7-2110. Turn off then on
• Description: Machine makes relay off because of abnormal heater control.
• Remedy: 1) Turn the machine off. Re-install the fuser unit, then turn the machine on. 2) If the problem persists, turn the machine off. 3) Replace the fuser drive board(110V: JC44-00210A, 220V: JC44-00211A) 4) If the problem persists, replace the main board(JC92-02516A) 5) If the problem persists,

• Code: S8-1111
• Display: HVPS Failure: #S8-1111. Turn off then on.
• Description: 24V power for HVPS board1 is less than 1.6V.
• Remedy: 1) Turn the machine off. 2) Remove the left cover. 3) Replace the HVPS board1(JC44-00220A). 4) Assemble the left cover. Turn the machine on.

• Code: S8-1112
• Display: HVPS Failure: #S8-1111. Turn off then on.
• Description: 24V power for HVPS board2 is less than 1.6V.
• Remedy: 1) Turn the machine off. 2) Remove the rear cover. 3) Replace the HVPS board2(JC44-00221A). 4) Assemble the rear cover. Turn the machine on.

• Code: U1-2113, U1-2119
• Display: Fuser Unit Failure: #. Turn off then on.
• Description: The temperature control of fuser unit is abnormal.
• Remedy: 1) Turn the machine off then on. 2) Turn the machine off. Re-install the fuser unit. Then turn the machine on. 3) If the problem persists, remove the fuser unit. 4) Check if the paper is curled on the fuser belt. 5) If yes, replace the fuser unit. If not, check the followings. a) Remove 8 screws. Remove left/right/top cover. b) Remove 8 screws. Remove the bracket. c) Check if the thermostat(4712-001093) is connected. d) Check if the center and side lamps(4713-001651 : 110V / 4713-001655 : 220V) are in short status. (Measure the resistance value between the common-center and common-side.) e) Check if the thermistor is defective. 6) If the step5 has no problem, replace the fuser unit(JC91-01120A(110V) / JC91-01121A(220V)). 7) If the problem persists, replace these parts in regular sequence. • Fuser Drive Board : JC44-00210A(110V) / JC44-00211A(220V) • Main board : JC92-02516A • SMPS board : JC44-00149B(110V) / JC44-00150B(220V)

• Code: U1-2115
• Display: Fuser Unit Failure: #U1-2115. Turn off then on. Call for service if the problem persists
• Description: The pressure control unit(Cam unit)of the fuser is abnormal.
• Remedy: 1) Turn the machine off then on. 2) Turn the machine off. Re-install the fuser unit. Then turn the machine on. 3) If the problem persists, remove the rear cover. Check if the fuser connector is connected correctly. 4) If the connection is OK, remove the fuser unit. 5) Remove the left/right cover after removing 4 screws. 6) Check if gears below is broken or contaminated. 7) If the problem persists, replace the fuser unit(JC91-01120A(110V) / JC91-01121A(220V)). 8) If the problem persists, replace the Motor DC(JC31-00159A). 9) If the problem persists, replace the main board(JC92-02516A).

• Code: U1-2132, U1-2135
• Display: Fuser Unit Failure: #U1-2132. Turn off then on. Call for service if the problem persists Fuser Unit Failure: #U1-2135. Turn off then on.
• Description: The temperature control of fuser unit is abnormal.
• Remedy: 1) Turn the machine off then on. 2) Turn the machine off. Re-install the fuser unit. Then turn the machine on. 3) If the problem persists, remove the fuser unit. 4) Check if the paper is curled on the fuser belt. 5) If yes, replace the fuser unit. If not, check the followings. a) Check if the input voltage is normal. b) Remove 8 screws. Remove left/right/top cover. c) Remove 8 screws. Remove the bracket. d) Check if the thermostat(4712-001093) is connected. e) Check if the center and side lamps(4713-001651 : 110V / 4713-001655 : 220V) are in short status. (Measure the resistance value between the common-center and common-side.) f) Check if the thermistor is defective. 6) If the step5 has no problem, replace the fuser unit(JC91-01120A(110V) / JC91-01121A(220V)). 7) If the problem persists, replace these parts in regular sequence. • Fuser Drive Board : JC44-00210A(110V) / JC44-00211A(220V) • Main board : JC92-02516A • SMPS board : JC44-00149B(110V) / JC44-00150B(220V)