Коды ошибок Brother MFC-L2740DWR, MFC-L2740DW. Сброс ошибок.

• Error Code: 0201
• Display: Print Unable 02 Turn the power off and then back on again.
• Description: Cannot detect the synchronized signal of the main motor. The speed of the main motor does not stabilize within the specified time.
• Remedy: 1 Connection failure of the main motor flat cable Reconnect the main motor flat cable. 2 Connection failure of the LVPS harness Reconnect the LVPS harness. 3 Damaged fuser gear Replace the fuser gear. 4 Main motor failure Replace the main motor. 5 Damaged fuser unit Replace the fuser unit. 6 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 7 Damaged part in motor drive sub ASSY Replace the main frame L ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0300
• Display: Print Unable 03 Turn the power off and then back on again.
• Description: Cannot detect the lock signal of the polygon motor for the laser unit (second time).
• Remedy: 1 Connection failure of the laser unit flat cable Reconnect the laser unit flat cable. 2 Laser unit flat cable failure Replace the laser unit flat cable. 3 Laser unit failure Replace the laser unit. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0305
• Display:
• Description: Cannot detect the lock signal of the polygon motor for the laser unit (first time).
• Remedy: 1 Connection failure of the laser unit flat cable Reconnect the laser unit flat cable. 2 Laser unit flat cable failure Replace the laser unit flat cable. 3 Laser unit failure Replace the laser unit. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0401
• Display: Print Unable 04 Turn the power off and then back on again.
• Description: Cannot detect the synchronized signal of the polygon motor for the laser unit (second time).
• Remedy: 1 Connection failure of the laser unit flat cable Reconnect the laser unit flat cable. 2 Laser unit flat cable failure Replace the laser unit flat cable. 3 Laser unit failure Replace the laser unit. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0405
• Display:
• Description: Cannot detect the synchronized signal of the polygon motor for the laser unit (first time).
• Remedy: 1 Connection failure of the laser unit flat cable Reconnect the laser unit flat cable. 2 Laser unit flat cable failure Replace the laser unit flat cable. 3 Laser unit failure Replace the laser unit. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0501
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: The center thermistor of the fuser unit has not reached the specified temperature within the specified time.
• Remedy: 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0502
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: The center thermistor of the fuser unit has not reached the specified temperature within the specified time after it was heated normally to the certain level.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0503
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: The center thermistor of the fuser unit detected a temperature higher than the specified value.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0504
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: After the heat unit was heated normally, the center thermistor of the fuser unit detected a temperature lower than the specified value.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0505
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: The center thermistor of the fuser unit detected a temperature rise greater than the specified value within the specified time.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0506
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: The center thermistor of the fuser unit detected a temperature fall greater than the specified value within the specified time. Print Unable 05 Turn the power off and then back on again. <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 050A
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: The hardware detected a temperature error through the center thermistor or the side thermistor of the fuser unit.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 050B
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: When the center thermistor of the fuser unit was lower than the idle temperature, the side thermistor detected a temperature higher than the specified temperature.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 050C
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: When the center thermistor of the fuser unit was higher than the idle temperature, the side thermistor detected a temperature lower than the specified temperature.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 050F
• Display: Print Unable 05 Turn the power off and then back on again.
• Description: An error occurred in the fuser unit. Print Unable 05 Turn the power off and then back on again. Print Unable 05 Turn the power off and then back on again. Print Unable 05 Turn the power off and then back on again. Print Unable 05 Turn the power off and then back on again.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit. 2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Connection failure of the LVPS harness Reconnect the LVPS harness. 5 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY. <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.

• Error Code: 0600
• Display: Print Unable 06 Turn the power off and then back on again.
• Description: A communication error occurred between the ASIC controlled by engine and the motor driver.
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0800
• Display: Print Unable 08 Turn the power off and then back on again.
• Description: An error occurred in the internal temperature sensor.
• Remedy: 1 Internal temperature sensor failure Replace the main frame L ASSY. 2 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0900
• Display: Print Unable 09 Turn the power off and then back on again.
• Description: Detected irregular power supply for more than 100 times.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. 1 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. Reset irregular power supply detection counter of low-voltage power supply PCB (function Error Code: 88) in Chapter 5 to reset the irregular power supply detection counter. 2 Main PCB failure Replace the main PCB ASSY. Note: • The irregular power supply detection error of the low-voltage power supply PCB (error Error Code: 0900) occurs when there is a large distortion in the power supply voltage supplied to the machine. In this case, if the same power supply is used, the same error may occur even when the low-voltage power supply PCB ASSY is replaced. Ask the user to review the installation environment.

• Error Code: 0A02
• Display: Print Unable 0A Turn the power off and then back on again.
• Description: Detected a fan failure.
• Remedy: 1 Connection failure of the fan harness Reconnect the fan harness. 2 Connection failure of the HVPS flat cable Reconnect the HVPS flat cable. 3 Fan failure Replace the fan. 4 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 5 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY. 6 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0B01
• Display: Print Unable 0B Turn the power off and then back on again.
• Description: An error occurred in the high-voltage power supply PCB ASSY while operating.
• Remedy: <User Check> • Replace the drum unit. 1 Connection failure of the HVPS flat cable Reconnect the HVPS flat cable. 2 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: 0B02
• Display: Print Unable 0B Turn the power off and then back on again.
• Description: An error occurred in the high-voltage power supply PCB ASSY when the machine was in the ready state.
• Remedy: <User Check> • Replace the drum unit. 1 Connection failure of the HVPS flat cable Reconnect the HVPS flat cable. 2 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: 4000
• Display: Drum End Soon
• Description: The number of rotations of the drum unit is reaching the upper limit.
• Remedy: <User Check> • Prepare a new drum unit. 1 Replace the drum unit with a new one and reset the drum counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Error Code: 4200
• Display: Replace Drum
• Description: The number of rotations of the drum unit has reached the upper limit. (Printing does not stop.)
• Remedy: <User Check> • Prepare a new drum unit. 1 Replace the drum unit with a new one and reset the drum counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Error Code: 4B01
• Display: Toner Low
• Description: Dot count or develop roller counter of the toner is reaching the upper limit.
• Remedy: <User Check> • Prepare a new toner cartridge. 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: 4C01
• Display: Replace Toner Open the Front Cover, replace Toner Cartridge.
• Description: Dot count or develop roller counter of the toner has reached the upper limit in the toner stop mode.
• Remedy: <User Check> • Replace the toner cartridge which has reached the upper limit. 1 If the error display is not cleared after replacing the toner cartridge with a new one, the main PCB is faulty. Replace the main PCB ASSY.

• Error Code: 4D01
• Display: Replace Toner
• Description: Dot count or develop roller counter of the toner has reached the upper limit in the toner continuous printing mode.
• Remedy: <User Check> • Replace the toner cartridge which has reached the upper limit. 1 If the error display is not cleared after replacing the toner cartridge with a new one, the main PCB is faulty. Replace the main PCB ASSY.

• Error Code: 4E01
• Display: Toner Ended Open the Front Cover, replace Toner Cartridge.
• Description: The toner cartridge has reached the upper limit in the toner continuous printing mode.
• Remedy: <User Check> • Replace the toner cartridge which has reached the upper limit. 1 If the error display is not cleared after replacing the toner cartridge with a new one, the main PCB is faulty. Replace the main PCB ASSY.

• Error Code: 4F01
• Display: Cartridge Error Put the Toner Cartridge back in.
• Description: The new toner sensor could not detect the new toner cartridge correctly.
• Remedy: <User Check> • Replace the toner cartridge with a new one again. • If the machine is on the uneven surface, place it on a level surface. 1 Connection failure of the new toner sensor PCB flat cable Reconnect the new toner sensor PCB flat cable. 2 New toner actuator coming off or caught in sections of the machine Reattach the new toner actuator. 3 Develop joint coming off or caught in sections of the machine Reattach the develop joint. 4 New toner sensor failure Replace the new toner sensor PCB ASSY. 5 If the error display is not cleared after replacing the toner cartridge with a new one, the main PCB is faulty. Replace the main PCB ASSY.

• Error Code: 6001
• Display: Cover is Open Close the Front Cover.
• Description: The front cover sensor detected that the front cover was open.
• Remedy: <User Check> • Close the front cover. 1 Front cover failure Replace the front cover. 2 Front cover sensor failure Replace the high-voltage power supply PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: 6004
• Display: Cover is Open Close the Fuser Cover which can be found behind the Back Cover of the machine.
• Description: The eject sensor detected that the fuser cover was open.
• Remedy: <User Check> • Close the fuser cover. 1 Eject actuator coming off or caught in sections of the machine Reattach the eject actuator. 2 Fuser cover attachment failure Reattach the fuser cover. 3 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 4 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 5 Main PCB failure Replace the main PCB ASSY.

• Error Code: 6101
• Display: No Toner Open the Front Cover, then install Toner Cartridge.
• Description: The new toner sensor detected that the toner cartridge was not set.
• Remedy: <User Check> • Set the toner cartridge correctly. • Replace the toner cartridge with a new one. 1 New toner actuator coming off Reattach the new toner actuator. 2 Connection failure of the new toner sensor PCB flat cable Reconnect the new toner sensor PCB flat cable. 3 New toner sensor PCB failure Replace the new toner sensor PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: 6801
• Display: Cooling Down Wait for a while
• Description: The side thermistor of the fuser unit or the internal temperature sensor detected a temperature higher than the specified value.
• Remedy: <User Check> • Lower the room temperature. • Keep the machine away from heating appliances. 1 Side thermistor failure Replace the fuser unit. 2 Main PCB failure Replace the main PCB ASSY.

• Error Code: 6901
• Display: Self-Diagnostic Turn the power off, then on again. Leave the machine for 15 min.
• Description: An error occurred in the fuser unit when the power switch was turned ON or sleep mode was released.
• Remedy: 1 Connection failure of each fuser unit harness Reconnect each harness of the fuser unit. 2 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 3 Fuser unit failure Replace the fuser unit. 4 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 6 Main PCB failure Replace the main PCB ASSY. Note: • Turn OFF the power switch. After the fuser unit has cooled sufficiently, turn ON the power switch again and leave the machine for 15 minutes. This problem may then be cleared. • To release the fuser unit error after taking appropriate measures, enter the maintenance mode once and quit it with the function Error Code 99.

• Error Code: 6902
• Display: Self-Diagnostic Will Automatically Restart within 15 minutes.
• Description: Rechecking the error after the power switch was turned OFF and then ON again because an error was detected in the fuser unit. (This message is displayed for approximately 15 minutes when the machine is restarted after error Error Code 6901 has occurred.)
• Remedy: 1 Connection failure of each fuser unit harness Reconnect each harness of the fuser unit. 2 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 3 Fuser unit failure Replace the fuser unit. 4 Eject sensor PCB failure Replace the eject sensor PCB ASSY. 5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 6 Main PCB failure Replace the main PCB ASSY. Note: • Turn OFF the power switch. After the fuser unit has cooled sufficiently, turn ON the power switch again and leave the machine for 15 minutes. This problem may then be cleared. • To release the fuser unit error after taking appropriate measures, enter the maintenance mode once and quit it with the function Error Code 99.

• Error Code: 6A00
• Display: Drum ! Slide the Green tab on Drum Unit.
• Description: Detected discharge that may be attributable to dirty corona wire on the drum unit.
• Remedy: <User Check> • Slide the green tab of the drum unit to left and right for two to three times to clean the corona wire. • Clean the terminal of the drum unit. • Replace the drum unit. 1 Dirt on the high-voltage power supply PCB terminal Clean the electrodes of the machine. 2 High voltage electrodes attachment failure Check if the problem disappears after pressing each electrode. If not, reattach the electrodes. 3 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: 6F00
• Display: Print Unable ZC Turn the power off and then back on again.
• Description: Detected irregular power supply for less than 100 times.
• Remedy: <User Check> • Turn the power switch OFF and then back ON again. • Put a filter into the power supply. • Install a voltage stabilizer to the power supply unit.

• Error Code: 7000
• Display: Jam Inside Open the Front Cover, pull out the Drum Unit completely and remove the jammed paper.
• Description: The eject sensor does not detect paper pass after the registration rear sensor detected the paper pass.
• Remedy: <User Check> • Remove the jammed paper. 1 Foreign object inside the machine Remove the foreign object. 2 Connection failure of the eject sensor PCB flat cable Reconnect the eject sensor PCB flat cable. 3 Eject actuator coming off or caught in sections of the machine Reattach the eject actuator. 4 Fuser cover attachment failure Reattach the fuser cover. 5 Eject sensor failure Replace the eject sensor PCB ASSY. 6 Fuser unit failure Replace the fuser unit. 7 Damaged gears in the feeding system Replace the main frame L ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Error Code: 7100
• Display: Jam Rear Open the Back Cover and remove the jammed paper, then press Start.
• Description: The eject sensor remains ON (paper pass detected) even after the registration rear sensor detected the end of paper pass.
• Remedy: <User Check> • Remove the jammed paper. • Check if the back cover is open during duplex printing. 1 Foreign object in the rear of the machine Remove the foreign object. 2 Eject actuator caught in sections of the machine Reattach the eject actuator. 3 Fuser cover attachment failure Reattach the fuser cover. 4 Eject sensor failure Replace the eject sensor PCB ASSY. 5 Fuser unit failure Replace the fuser unit. 6 Damaged gears in the feeding system Replace the main frame L ASSY. 7 Main PCB failure Replace the main PCB ASSY.

• Error Code: 7300
• Display: Jam Tray Remove the jammed paper from Tray.
• Description: When printing from the paper tray, the registration front sensor does not detect paper pass within the specified time after the paper feed sensor detected paper pass.
• Remedy: <User Check> • Remove the jammed paper. • Close the paper tray correctly. 1 Foreign object in the front section of the paper tray Remove the foreign object. 2 Paper dust cleaning roller attachment failure Reattach the paper dust cleaning roller. 3 Connection failure of the registration front/rear sensor PCB harness Reconnect the registration front/rear sensor PCB harness. 4 Connection failure of the HVPS flat cable Reconnect the HVPS flat cable. 5 Registration front actuator coming off or caught in some sections of the machine Reattach the registration front actuator. 6 HVPS flat cable breakage Replace the HVPS flat cable. 7 Registration front sensor failure Replace the registration front/rear actuator holder ASSY. 8 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY. 9 Damaged gears in the feeding system Replace the main frame L ASSY. 10 Main PCB failure Replace the main PCB ASSY.

• Error Code: 7700
• Display: Jam 2-sided Pull out the Duplex Tray at the back of the machine and remove the jammed paper.
• Description: The registration front sensor does not detect paper pass within the specified time after the first side was printed in duplex printing mode.
• Remedy: <User Check> • Remove the jammed paper. • Close the back cover correctly. • Close the paper tray correctly. 1 Foreign object in the duplex paper feed system Remove the foreign object. 2 Foreign object in the duplex paper feed system of the paper tray Remove the foreign object. 3 Back cover attachment failure Reattach the back cover. 4 Fuser cover attachment failure Reattach the fuser cover. 5 Duplex tray failure Replace the duplex tray. 6 Damaged gears in the feeding system Replace the main frame L ASSY. 7 Main PCB failure Replace the main PCB ASSY.

• Error Code: 7C00
• Display: Cover is Open Make sure there is no paper jammed inside the machine and close the Back Cover, then press Start.
• Description: The eject sensor was ON when the power switch was turned ON.
• Remedy: <User Check> • Close the back cover correctly. 1 Eject actuator caught in sections of the machine Reattach the eject actuator. 2 Fuser cover attachment failure Reattach the fuser cover. 3 Back cover attachment failure Reattach the back cover. 4 Eject sensor failure Replace the eject sensor PCB ASSY. 5 Main PCB failure Replace the main PCB ASSY.

• Error Code: 8903
• Display: 2-sided Disabled Close the Back Cover of the machine.
• Description: The back cover/duplex tray sensor detected that the cover was open when duplex printing is started. (Before registering printing data to engine)
• Remedy: <User Check> • Close the back cover correctly. 1 Back cover/duplex tray sensor attachment failure Reattach the back cover/duplex tray sensor. 2 Boss to push the back cover/ duplex tray sensor is broken. Replace the back cover. 3 Back cover/duplex tray sensor failure Replace the eject sensor PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: 8904
• Display: 2-sided Disabled Close the Back Cover of the machine.
• Description: The back cover/duplex tray sensor detected that the cover was open during duplex printing. (After registering printing data to engine)
• Remedy: <User Check> • Close the back cover correctly. 1 Back cover/duplex tray sensor attachment failure Reattach the back cover/duplex tray sensor. 2 Boss to push the back cover/ duplex tray sensor is broken. Replace the back cover. 3 Back cover/duplex tray sensor failure Replace the eject sensor PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: 8A01
• Display: Size Error DX Specify the correct paper.
• Description: The registration rear sensor detected that the paper fed was smaller or larger than the specified size in duplex printing mode.
• Remedy: <User Check> • Use appropriate paper (Letter to Legal). 1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator. 2 Registration rear sensor failure Replace the registration front/rear actuator holder ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: 8C00
• Display: Manual Feed Load paper.
• Description: There is no paper set in the manual feed slot on the manual feed slot fix mode.
• Remedy: <User Check> • Set paper in the manual feed slot. 1 Registration front actuator caught in some sections of the machine Reattach the registration front actuator. 2 Connection failure of the registration rear sensor harness Reconnect the registration front/rear sensor PCB harness. 3 Connection failure of the HVPS flat cable Reconnect the HVPS flat cable. 4 HVPS flat cable breakage Replace the HVPS flat cable. 5 Registration rear sensor failure Replace the registration front/rear actuator holder ASSY. 6 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY. 7 Main PCB failure Replace the main PCB ASSY.

• Error Code: 8E01
• Display: Size mismatch Fax received. Set correct paper size in menu.
• Description: The paper size setting for the machine is other than A4, Letter, Legal or Folio when receiving fax.
• Remedy: <User Check> • Set A4 or Letter size paper. 1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator. 2 Registration rear sensor failure Replace the registration front/rear actuator holder ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: 8E02
• Display: Size mismatch Reload correct paper, then press Start.
• Description: Detected that the size of the paper set to paper tray was over 10 mm shorter than letter size when receiving fax or printing a list/report.
• Remedy: <User Check> • Set A4 or Letter size paper. 1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator. 2 Registration rear sensor failure Replace the registration front/rear actuator holder ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: 9002
• Display: Size mismatch Reload correct paper, then press Start.
• Description: When printing from the paper tray, the size of paper set in the paper tray does not match the size specified by the driver.
• Remedy: <User Check> • Change the driver setting to be matched with the size of the paper set in the paper tray. 1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator. 2 Registration rear sensor failure Replace the registration front/rear actuator holder ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: 9302
• Display: No Paper Load paper.
• Description: When printing from the paper tray, the paper feed sensor detected that there was no paper set in the paper tray.
• Remedy: <User Check> • Set paper in the paper tray. 1 Connection failure of the paper feed sensor harness Reconnect the paper feed sensor harness ASSY. 2 Paper feed actuator caught in sections of the machine Reattach the paper feed actuator. 3 New toner sensor PCB failure Replace the new toner sensor PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: 9307
• Display: No Paper Load paper in Tray.
• Description: Detected that paper has run out during receiving fax or printing a list/report.
• Remedy: <User Check> • Set paper in the paper tray. 1 Connection failure of the paper feed sensor harness Reconnect the paper feed sensor harness ASSY. 2 Paper feed actuator caught in sections of the machine Reattach the paper feed actuator. 3 New toner sensor PCB failure Replace the new toner sensor PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: 9701
• Display: Size Error DX Press Stop Key. Specify the correct paper and load the same size paper as the Printer driver setting.
• Description: A tray set to duplex printing-incompatible size was specified in duplex printing.
• Remedy: <User Check> • Specify A4 or Letter size paper in the driver and set paper with the same size to the specified paper tray. 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: A000
• Display: Scan Unable Remove the original document. Turn the power off, then on again.
• Description: Image processing cannot be completed correctly because the number of pixels required for image processing is insufficient in the scanned data for the second side of the document.
• Remedy: 1 Incorrect correction data for second side CIS unit Execute Set CIS scan area (function Error Code: 55). 2 Second side CIS unit failure Replace the second side CIS unit. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: A200
• Display: Clear the scanner jam, then press the Stop Key.
• Description: The first side document scanning position sensor detected that the document length was 90 cm or longer while scanning the document.
• Remedy: <User Check> • Set A4 or Letter size paper. • Remove the jammed document. 1 First side document scanning position actuator caught in some sections of the machine Reattach the first side document scanning position actuator. 2 First side document scanning position sensor failure Replace the first side document scanning position sensor PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: A300
• Display: Document Jam Clear the scanner jam, then press the Stop Key.
• Description: The first side document scanning position sensor has not detected the top of the document even after the document has been fed for the specified distance.
• Remedy: <User Check> • Set A4 or Letter size paper. • Remove the jammed document. 1 First side document scanning position actuator caught in some sections of the machine Reattach the first side document scanning position actuator. 2 Connection failure of the first side document scanning position sensor PCB harness Reconnect the first side document scanning position sensor PCB harness. 3 First side document scanning position sensor failure Replace the first side document scanning position sensor PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: A400
• Display: Cover is Open Close the ADF Cover, then press the Stop Key.
• Description: The ADF cover sensor detected that the ADF cover was open.
• Remedy: <User Check> • Close the ADF cover correctly. 1 ADF cover actuator caught in some sections of the machine Reattach the ADF cover actuator. 2 Connection failure of the ADF cover/document detection sensor PCB harness Reconnect the ADF cover/document detection sensor PCB harness. 3 ADF cover sensor failure Replace the ADF cover/document detection sensor PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

• Error Code: A500
• Display:
• Description: When scanning the fax, white or black correction data for the first side CIS was not within the correct range. (First time)
• Remedy: 1 Incorrect correction data for first side CIS Execute Set CIS scan area (function Error Code: 55). 2 First side CIS unit failure Replace the first side CIS unit. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: A600
• Display:
• Description: When scanning the fax, white or black correction data for the first side CIS was not within the correct range. (Second time)
• Remedy: 1 Incorrect correction data for first side CIS Execute Set CIS scan area (function Error Code: 55). 2 First side CIS unit failure Replace the first side CIS unit. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: A700
• Display: Print Unable A7 Turn the power off and then back on again.
• Description: Color parameter in the ROM does not match the first or second side CIS.
• Remedy: <User Check> • Install the latest firmware. 1 Second side CIS unit failure Replace the second side CIS unit. 2 First side CIS unit failure Replace the first side CIS unit. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: AC00
• Display:
• Description: When scanning the fax, white or black correction data for the second side CIS was not within the correct range. (First time)
• Remedy: 1 Incorrect correction data for second side CIS unit Execute Set CIS scan area (function Error Code: 55). 2 Second side CIS unit failure Replace the second side CIS unit. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: AD00
• Display: Scan Unable Remove the original document. Turn the power off, then on again.
• Description: Image processing cannot be completed correctly because the number of pixels required for image processing is insufficient in the scanned data for the first side of the document.
• Remedy: 1 Incorrect correction data for first side CIS unit Execute Set CIS scan area (function Error Code: 55). 2 First side CIS unit failure Replace the first side CIS unit. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: AF00
• Display: Scan Unable AF Turn the power off and then back on again.
• Description: Home position is still being detected even after the first side CIS was moved.
• Remedy: 1 Dust on the CIS rail Remove the dust on the CIS rail. 2 CIS drive belt coming off Reattach the CIS drive belt. 3 CIS carriage coming off Reattach the CIS carriage. 4 Connection failure of the document scanner motor harness Reconnect the document scanner motor harness. 5 First side CIS unit failure Replace the first side CIS unit. 6 Document scanner motor failure Replace the document scanner unit. 7 Main PCB failure Replace the main PCB ASSY.

• Error Code: B000
• Display: Scanner Error
• Description: Detected that the first or second side CIS flat cable was not inserted correctly when function Error Code 55 was executed.
• Remedy: 1 Connection failure of the first side CIS flat cable Reconnect the first side CIS flat cable. 2 Connection failure of second side CIS flat cable Reconnect the second side CIS flat cable. 3 First side CIS unit failure Replace the first side CIS unit. 4 Second side CIS unit failure Replace the second side CIS unit. 5 Main PCB failure Replace the main PCB ASSY.

• Error Code: BB00
• Display: Scanner Error
• Description: A white level not within the standard was scanned when function Error Code 55 was executed.
• Remedy: 1 Dirt on the second side document hold Clean the second side document hold. 2 Dirt on the white tape Clean the white tape. 3 First side CIS unit failure Replace the first side CIS unit. 4 Second side CIS unit failure Replace the second side CIS unit. 5 Second side document hold failure Replace the ADF unit. 6 White tape failure Replace the document scanner unit. 7 Main PCB failure Replace the main PCB ASSY.

• Error Code: BC00
• Display:
• Description: When scanning the fax, white or black correction data for the second side CIS was not within the correct range. (Second time)
• Remedy: 1 Incorrect correction data for second side CIS unit Execute Set CIS scan area (function Error Code: 55). 2 Second side CIS unit failure Replace the second side CIS unit. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: BD00
• Display: Scanner Error
• Description: A black level not within the standard was scanned when function Error Code 55 was executed.
• Remedy: 1 Dirt on the second side document hold Clean the second side document hold. 2 Dirt on the white tape Clean the white tape. 3 First side CIS unit failure Replace the first side CIS unit. 4 Second side CIS unit failure Replace the second side CIS unit. 5 Second side document hold failure Replace the ADF unit. 6 White tape failure Replace the document scanner unit. 7 Main PCB failure Replace the main PCB ASSY.

• Error Code: BF00
• Display: Scan Unable Document is too long for 2-sided scanning. Press Stop key.
• Description: The first side document scanning position sensor detected that the ADF was unable to duplex-feed the document because the document length is 400 mm or longer.
• Remedy: <User Check> • Set A4 or Letter size paper. • Remove the jammed document. 1 First side document scanning position actuator caught in some sections of the machine Reattach the first side document scanning position actuator. 2 First side document scanning position sensor failure Replace the first side document scanning position sensor PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: C700
• Display: Out of Memory Press Stop Key.
• Description: There is insufficient memory to expand PC print data.
• Remedy: <User Check> • Print the print data stored in the memory. • Divide the print data and print them separately. 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: C800
• Display: Print Data Full Print Data is full. Press Stop and delete the previously stored data.
• Description: The memory size allotted for Secure print was exceeded when saving Secure print data.
• Remedy: <User Check> • Print the print data stored in the memory. • Divide the print data and print them separately. 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: D100
• Display: Print Unable D1 Turn the power off and then back on again.
• Description: An error occurred while initializing the modem.
• Remedy: 1 Modem PCB failure Replace the modem PCB ASSY. 2 Main PCB failure Replace the main PCB ASSY.

• Error Code: D200
• Display: Machine Error Unplug machine, then call Brother.
• Description: Detected the modem PCB was not connected.
• Remedy: 1 Connection failure of the modem flat cable Reconnect the modem flat cable. 2 Modem PCB failure Replace the modem PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: D800
• Display: Print Unable D8 Turn the power off and then back on again.
• Description: An error occurred while initializing the touch panel.
• Remedy:

• Error Code: D900
• Display:
• Description: Communication between the panel PCB and main PCB was unable while initializing the touch panel.
• Remedy: <User Check> • Check that there is no object on the touch panel. • Install the latest firmwares (panel firmware and main firmware). 1 Connection failure of the touch panel flat cable Reconnect the touch panel flat cable. 2 Touch panel failure Replace the touch panel ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Error Code: DA00
• Display:
• Description: There was no response from the panel PCB for the specified time after initializing the panel PCB.
• Remedy: <User Check> • Install the latest firmwares (panel firmware and main firmware). 1 Touch panel failure Replace the touch panel ASSY. 2 Main PCB failure Replace the main PCB ASSY.

• Error Code: E000
• Display: Print Unable E0 Turn the power off and then back on again.
• Description: An error occurred in the ROM check sum.
• Remedy: <User Check> • Install the latest firmware. 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: E100
• Display: Print Unable E1 Turn the power off and then back on again.
• Description: Program error
• Remedy: <User Check> • Install the latest firmware. 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: E500
• Display: Print Unable E5 Turn the power off and then back on again.
• Description: An error occurred during access to the DRAM in the main PCB ASSY.
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: E600
• Display: Print Unable E6 Turn the power off and then back on again.
• Description: Write error in the EEPROM of the main PCB ASSY
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: E701
• Display: Print Unable E7 Turn the power off and then back on again.
• Description: Irregular operation of the flash ROM file system on the main PCB.
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: E702
• Display: Print Unable E7 Turn the power off and then back on again.
• Description: Read error in the flash ROM on the main PCB
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Error Code: F900
• Display: Machine Error F9
• Description: The country Error Code was not entered correctly.
• Remedy: 1 The power was turned OFF while function Error Code 74 was running. Reenter the country Error Code. 2 Main PCB failure Replace the main PCB ASSY.

Коды ошибок Brother MFC-L2740DW, MFC-L2740DWR.

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