• Code: U2 00
• Description: EEPROM read/write error (ICU detection)
• Causes: EEPROM version error EEPROM write error
• Remedy: Case 1 Cause EEPROM trouble. EEPROM is not initialized. Check & Remedy 1. Check that the EEPROM is properly set. 2. Use SIM 16 to cancel the error. Case 2 Cause ICU PWB EEPROM access circuit trouble Check & Remedy 1. To prevent against deletion of the counter data and the adjustment data, record them with the simulation. (When a printer option is installed, use SIM 22-1 to record the counter data and the adjustment data.) 2. Replace the ICU PWB. 3. Use SIM 16 to cancel the error.

• Code: U2 11
• Description: EEPROM check sum error (ICU detection)
• Causes: EEPROM (ICU) check sum error
• Remedy: Case 1 Cause EEPROM trouble Check & Remedy 1. Check that the EEPROM is properly set. 2. Use SIM 16 to cancel the error. Case 2 Cause Control circuit freeze by noises. ICU PWB EEPROM access circuit trouble. Check & Remedy 1. To prevent against deletion of the counter data and the adjustment data, record them with the simulation. (When a printer option is installed, use SIM 22-1 to record the counter data and the adjustment data.) 2. Replace the ICU PWB. 3. Use SIM 16 to cancel the error.

• Code: U2 30
• Description: Production No. data discrepancy
• Causes: The production No. recorded in the PCU differs from that recorded in the ICU.
• Remedy: Case 1 Cause EEPROM is not exchanged when replacing the PCU/ICU PWB. Check & Remedy Check that the EEPROM is properly installed. When replacement, check that the EEPROM before replacement is inserted to the board after replacement.

• Code: U2 80
• Description: EEPROM read/write error (SCN)
• Causes: EEPROM version error EEPROM write error
• Remedy: Case 1 Cause EEPROM trouble, Insertion of EEPROM which is not initialized or defective. Check & Remedy 1. Check that the EEPROM is properly inserted. 2. Use SIM 16 to cancel the error. Case 2 Cause SCN PWB EEPROM access circuit trouble Check & Remedy 1. To prevent against deletion of the counter data and the adjustment data, record them with the simulation. (When a printer option is installed, use SIM 22-1 to record the counter data and the adjustment data.) 2. Replace the SCN PWB. 3. Use SIM 16 to cancel the error.

• Code: U2 81
• Description: Adjustment value check sum error (SCN)
• Causes: EEPROM (SCN) check sum error
• Remedy: Case 1 Cause EEPROM trouble Check & Remedy 1. Check that the EEPROM is properly inserted. 2. Use SIM 16 to cancel the error. Case 2 Cause SCN PWB EEPROM access circuit trouble Check & Remedy 1. To prevent against deletion of the counter data and the adjustment data, record them with the simulation. (When a printer option is installed, use SIM 22-1 to record the counter data and the adjustment data.) 2. Replace the SCN PWB. 3. Use SIM 16 to cancel the error.

• Code: U2 90
• Description: EEPROM read/write error (PCU)
• Causes: EEPROM version error EEPROM write error
• Remedy: Case 1 Cause EEPROM trouble, Insertion of EEPROM which is not initialized or defective. Check & Remedy 1. Check that the EEPROM is properly inserted. 2. Use SIM 16 to cancel the error. Case 2 Cause PCU PWB EEPROM access circuit trouble Check & Remedy 1. To prevent against deletion of the counter data and the adjustment data, record them with the simulation. (When a printer option is installed, use SIM 22-1 to record the counter data and the adjustment data.) 2. Replace the PCU PWB. 3. Use SIM 16 to cancel the error.

• Code: U2 91
• Description: Adjustment value check sum error (PCU)
• Causes: EEPROM (PCU) check sum error
• Remedy: Case 1 Cause EEPROM trouble Check & Remedy 1. Check that the EEPROM is properly inserted. 2. Use SIM 16 to cancel the error. Case 2 Cause Control circuit freeze caused by noises, PCU PWB EEPROM access circuit trouble Check & Remedy 1. To prevent against deletion of the counter data and the adjustment data, record them with the simulation. (When a printer option is installed, use SIM 22-1 to record the counter data and the adjustment data.) 2. Replace the PCU PWB. 3. Use SIM 16 to cancel the error.

• Code: U4 02
• Description: ADU alignment plate operation abnormality
• Causes: The alignment plate does not move from the home position within 1sec when it must move. Return to the home position is not detected for 5sec or more.
• Remedy: Case 1 Cause Home position sensor trouble Check & Remedy Use SIM 9-2 to detect the home position sensor. Case 2 Cause Alignment plate shift motor trouble Check & Remedy Use SIM 9-4 to check the alignment plate operation. Case 3 Cause Disconnection of the harness between the ADU control PWB and the motor sensor. Check & Remedy Check connection of the harness between the ADU control PWB and the motor sensor. Case 4 Cause Alignment plate operation belt, gear breakage or improper adjustment Check & Remedy Remove the ADU, and check for breakage of the gear and the belt.