Causes: The values in one of the billing counters or the life counter mismatch between the main side and the engine side.
Remedy: 1 Checking the machine serial No. of the main PWB The main PWB for the different main unit is installed. Check the machine serial Nos of MAIN and ENGINE at U004, and install the correct main PWB if the MAIN No. differs. Note: Be sure not to execute U004 if the machine serial No. differs from the machine serial No. indicated on the main unit to prevent the different machine serial No. from overwritten. (Dontselect[Execute]andpressth e[Start]key.)' 2 Checking the machine serial No. in the EEPROM on the engine PWB The EEPROM for the different main unit is installed. Check the machine serial Nos of MAIN and ENGINE at U004, and install the correct EEPROM on the engine PWB if the ENGINE machine serial No. differs. 3 Checking the main PWB The main PWB is faulty. When the MAIN machine serial No. differs at U004, replace the main PWB and execute U004. 4 Checking the EEPROM on the engine PWB The EEPROM is faulty. When the machine serial No. in the engine PWB differs at U004, reattach the EEPROM on the engine PWB. If not repaired, replace the EEPROM and execute U169.Then, compare to previously output U000 maintenance report, re-enter the setting value for U053, U100, U101, U106, U140, U161, U464, U252, U034, and execute the maintenance mode in following order. U119 > U469[Manual] > U140[AC Calib] > U464[Calib] > U155[Calibration] (prepare the empty waste toner box) 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB.
Code: C0180
Description: Machine serial number mismatch
Causes: The machine serial Nos. in the main PWB and the EEPROM on the engine PWB mismatch when turning the power on.
Remedy: 1 Checking the machine serial No. of the main PWB The main PWB for the different main unit is installed. Check the machine serial Nos of MAIN and ENGINE at U004, and install the correct main PWB if the MAIN No. differs. Note: Be sure not to execute U004 if the machine serial No. differs from the machine serial No. indicated on the main unit to prevent the different machine serial No. from overwritten. (Dontselect[Execute]andpressth e[Start]key.)' 2 Checking the machine serial No. in the EEPROM on the engine PWB The EEPROM for the different main unit is installed. Check the machine serial Nos of MAIN and ENGINE at U004, and install the correct EEPROM on the engine PWB if the ENGINE machine serial No. differs. 3 Replacing the main PWB The main PWB is faulty. When the MAIN machine serial No. differs at U004, replace the main PWB and execute U004. 4 Checking the EEPROM on the engine PWB The EEPROM is faulty. When the machine serial No. in the engine PWB differs at U004, reattach the EEPROM on the engine PWB. If not repaired, replace the EEPROM and execute U169.Then, compare to previously output U000 maintenance report, re-enter the setting value for U053, U100, U101, U106, U140, U161, U464, U252, U034, and execute the maintenance mode in following order. U119 > U469[Manual] > U140[AC Calib] > U464[Calib] > U155[Calibration] (prepare the empty waste toner box) 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB.
Code: C0350
Description: Panel PWB communication error (Electronic volume I2C communication error)
Causes: Since NACK was received during the I2C communication, the retry was repeated 5 times and the initial command was transmitted, and then the retry was repeated 5 times again. After that, NACK was also received.
Remedy: 1 Resetting the main power The operation of the operation panel main PWB 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 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. Operation panel main PWB - Main PWB 3 Replacing the operation panel main PWB The operation panel main PWB is faulty. Replace the panel main PWB. 4 Replacing the main PWB The main PWB is faulty. Replace the main PWB.
Code: C0361
Description: Communication error between the engine CPU and the feed ASIC
Causes: The communication with the feed ASIC failed 10 times continuously.
Remedy: 1 Resetting the main power The engine PWB does not operate properly. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version 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. Feed drive PWB - Engine PWB 4 Replacing the feed drive PWB The feed drive PWB is faulty. Replace the feed drive PWB. 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB.
Code: C0362
Description: Communication error between the engine CPU and the feed ASIC
Causes: The communication with the feed ASIC failed 10 times continuously.
Remedy: 1 Resetting the main power The engine PWB does not operate properly. Turn the power switch and the main power switch off . After 5s passes, turn the main power switch and the power switch on. 2 Firmware upgrade The firmware is not the latest version. Upgrade the engine firmware to the latest version 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. Feed image PWB - Engine PWB 4 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 5 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB.
Code: C0640
Description: Hard Disk error
Causes: The HDD cannot be accessed properly.
Remedy: 1 Releasing the partial operation The partial operation is executed. Execute resetting the partial operation at U906. 2 (When abnormal sounds occur) Replacing the HDD The HDD is faulty. Replace the HDD when the abnormal sounds are from the HDD. 3 Checking the connection The connector is not connected properly. The SATA cable or the wire is faulty. Reconnect the below SATA cable and connector of the wire. If there is no continuity, replace SATA cable or the wire. - HDD - main PWB 4 Initializing the HDD The HDD storage data is faulty. Execute U024 [FULL] (HDD Format). 5 Replacing the HDD The HDD is faulty. Replace the HDD. 6 Replacing the main PWB The main PWB is faulty. Replace the main PWB.