Description: Drum unit M EEPROM error Object: Color models 1. Five times consecutive detection of no response from the device for more than 5ms on reading / writing. 2. Data read in 2 places does not match 8 consecutive times. 3. Writing data and reading data does not match 8 consecutive times.
Remedy: 1 Resetting the main power The data stored in the EEPROM in the drum unit is faulty. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Reinstalling the drum unit The drum unit is not properly installed. Reinstall drum unit M so that the connector firmly connects. Detaching and reattaching the Drum Unit 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drum/developer relay PWB - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 4 Drum unit replacement The EEPROM in the drum unit is faulty. Replace drum unit M. Detaching and reattaching the Drum Unit 5 Replacing the drum/developer relay PWB The drum/developer relay PWB is faulty. Replace the drum/developer relay PWB. Detaching and reattaching the Drum/ Developer relay PWB (Section 4 "Detaching and reattaching the waste toner box unit") 6 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 7 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.
Code: C7904
Description: Drum unit Y EEPROM error 1. Five times consecutive detection of no response from the device for more than 5ms on reading / writing. 2. Data read in 2 places does not match 8 consecutive times. 3. Writing data and reading data does not match 8 consecutive times.
Remedy: 1 Resetting the main power The data stored in the EEPROM in the drum unit is faulty. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Reinstalling the drum unit The drum unit is not properly installed. Reinstall drum unit Y so that the connector firmly connects. Detaching and reattaching the Drum Unit 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drum/developer relay PWB - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 4 Drum unit replacement The EEPROM in the drum unit is faulty. Replace drum unit Y. Detaching and reattaching the Drum Unit 5 Replacing the drum/developer relay PWB The drum/developer relay PWB is faulty. Replace the drum/developer relay PWB. Detaching and reattaching the Drum/ Developer relay PWB (Section 4 "Detaching and reattaching the waste toner box unit") 6 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 7 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.
Code: C7911
Description: Developer unit K EEPROM error 1. Five times consecutive detection of no response from the device for more than 5ms on reading / writing. 2. Data read in 2 places does not match 8 consecutive times. 3. Writing data and reading data does not match 8 consecutive times.
Remedy: 1 Resetting the main power The data stored in the EEPROM in the developer unit is faulty. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Reinstalling the developer unit The developer unit is not properly installed. Reinstall developer unit K so that the connector firmly connects. Detaching and reattaching the Developer Unit 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drum/developer relay PWB - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 4 Developer unit replacement The EEPROM in the developer unit is faulty. Replace developer unit K. Detaching and reattaching the Developer Unit 5 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 6 Replacing the drum/developer relay PWB The drum/developer relay PWB is faulty. Replace the drum/developer relay PWB. Detaching and reattaching the Drum/ Developer relay PWB (Section 4 "Detaching and reattaching the waste toner box unit") 7 Checking the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.
Code: C7912
Description: Developer unit C EEPROM error 1. Five times consecutive detection of no response from the device for more than 5ms on reading / writing. 2. Data read in 2 places does not match 8 consecutive times. 3. Writing data and reading data does not match 8 consecutive times.
Remedy: 1 Resetting the main power The data stored in the EEPROM in the developer unit is faulty. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Reinstalling the developer unit The developer unit is not properly installed. Reinstall developer unit C so that the connector firmly connects. Detaching and reattaching the Developer Unit 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drum/developer relay PWB - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 4 Developer unit replacement The EEPROM in the developer unit is faulty. Replace the developer unit C. Detaching and reattaching the Developer Unit 5 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 6 Replacing the drum/developer relay PWB The drum/developer relay PWB is faulty. Replace the drum/developer relay PWB. Detaching and reattaching the Drum/ Developer relay PWB (Section 4 "Detaching and reattaching the waste toner box unit") 7 Checking the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.
Code: C7913
Description: Developer unit M EEPROM error 1. Five times consecutive detection of no response from the device for more than 5ms on reading / writing. 2. Data read in 2 places does not match 8 consecutive times. 3. Writing data and reading data does not match 8 consecutive times.
Remedy: Resetting the main power The data stored in the EEPROM in the developer unit is faulty. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Reinstalling the developer unit The developer unit is not properly installed. Reinstall developer unit M so that the connector firmly connects. Detaching and reattaching the Developer Unit 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drum/developer relay PWB - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 4 Developer unit replacement The EEPROM in the developer unit is faulty. Replace the developer unit M. Detaching and reattaching the Developer Unit 5 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 6 Replacing the drum/developer relay PWB The drum/developer relay PWB is faulty. Replace the drum/developer relay PWB. Detaching and reattaching the Drum/ Developer relay PWB (Section 4 "Detaching and reattaching the waste toner box unit") 7 Checking the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.
Code: C7914
Description: Developer unit Y EEPROM error 1. Five times consecutive detection of no response from the device for more than 5ms on reading / writing. 2. Data read in 2 places does not match 8 consecutive times. 3. Writing data and reading data does not match 8 consecutive times.
Remedy: 1 Resetting the main power The data stored in the EEPROM in the developer unit is faulty. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Reinstalling the developer unit The developer unit is not properly installed. Reinstall developer unit Y so that the connector firmly connects. Detaching and reattaching the Developer Unit 3 Checking the connection The connector is not connected properly, or the wire is faulty. Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. . Drum/developer relay PWB - Feed image PWB . Feed image PWB - Engine PWB Section 8 "PWBs" 4 Developer unit replacement The EEPROM in the developer unit is faulty. Replace the developer unit Y. Detaching and reattaching the Developer Unit 5 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update 6 Replacing the drum/developer relay PWB The drum/developer relay PWB is faulty. Replace the drum/developer relay PWB. Detaching and reattaching the Drum/ Developer relay PWB (Section 4 "Detaching and reattaching the waste toner box unit") 7 Checking the feed image PWB The feed image PWB is faulty. Replace the feed image PWB.
Code: C7941
Description: LSU EEPROM error Data read in 2 places does not match 8 consecutive times. Writing data and reading data does not match 8 consecutive times.
Remedy: 1 Resetting the main power The EEPROM data in the LSU is faulty. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Checking the FFC FFC is not connected properly. Or it is faulty. Clean the FFC terminals of the following FFC and reconnect them. If the FFC terminal is deformed or broken, replace the FFC. . LSU (APC PWB) - Engine PWB Section 8 "PWBs" 3 LSU replacement The APC PWB (LSU) is faulty. Replace the LSU. Detaching and reattaching the LSU 4 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update
Code: C7942
Description: LSU EEPROM error 2 Data read in 2 places does not match 8 consecutive times. Writing data and reading data does not match 8 consecutive times.
Remedy: 1 Resetting the main power The EEPROM data in the LSU is faulty. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Checking the FFC FFC is not connected properly. Or it is faulty. Clean the FFC terminals of the following FFC and reconnect them. If the FFC terminal is deformed or broken, replace the FFC. . LSU (APC PWB) - Engine PWB Section 8 "PWBs" 3 LSU replacement The APC PWB (LSU) is faulty. Replace the LSU. Detaching and reattaching the LSU 4 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version Firmware Update
Máy Photocopy
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PC- Laptop - Điện thoại
Máy in – Mực in
Máy chiếu - Màn chiếu
Máy chấm công - Kiểm soát ra vào
Máy hủy tài liệu
Máy đếm tiền, kho , quỹ
Loa - Loa bluetooth, vi tính, Karaok
Máy lạnh, Cây nước nóng lạnh
