Causes: When the main motor encoder pulse is not detected for 100 msec. - Main motor unit abnormality - Improper connection or disconnection the main motor and the harness. - MCU PWB abnormality
Remedy: Use TC 25-01 to check the main motor operations. Check connection of the main motor harness/ connector. Replace the main motor. Replace the MCU PWB.
Code: L6-10
Description: Polygon motor lock detection
Causes: The lock signal (specified rpm signal) does not return within a certain time (about 20 sec) from starting the polygon motor rotation. - Polygon motor unit abnormality - Improper connection or disconnection of the polygon motor and the harness. - MCU PWB abnormality
Remedy: Use TC 61-1 to check the polygon motor operations. Check connection of the polygon motor harness/connector. Replace the polygon motor. Replace the MCU PWB.
Code: U1-03
Description: FAX board battery error
Causes: The SRAM backup battery voltage on FAX PWB falls - The SRAM backup battery voltage on FAX PWB falls.
Remedy: Check voltage of the SRAM back up battery. Replace the battery.
Code: U2-04
Description: EEPROM read/write error (Serial communication error)
Causes: EEPROM access process error - EEPROM abnormality
Remedy: Check that the EEPROM is properly set. Use TC 16 to cancel the trouble. Replace the MCU PWB.
Code: U2-11
Description: Counter check sum error (EEPROM)
Causes: Check sum error of the counter area in the EEPROM - EEPROM abnormality
Remedy: Check that the EEPROM is properly set. Use TC 16 to cancel the trouble. Replace the MCU PWB.
Code: U9-99
Description: Operation panel language error
Causes: There is no language file. The language file is destroyed. - Language file abnormality - MCU PWB abnormality
Remedy: MCU firmware download Replace the MCU PWB.