Description: IDU error - Timing - Just after the main switch is turned on or during a hardware reset - Condition - The IDU starts self-diagnosis at power-on and a hardware error was detected during this.
Remedy: 1. Test the scanner IPU board (SP 4-904-001 and 002). If not OK, replace the scanner IPU board. 2. Replace the IDU board.
Code: SC195
Description: Serial number error - Timing - Just after the main switch is turned on - Condition - The serial number entered or stored in RAM is not correct.
Causes: • Incorrect serial number • RAM board is replaced. • Defective RAM
Remedy: 1. Check and re-enter the serial number properly. NOTE: Contact your product specialist for the detailed procedure.
Code: SC301
Description: Charge current leak - Timing - When the charge corona unit is on during printing or process control - Condition - The current leak was detected for 2 seconds.
Causes: • Charge corona unit not installed properly • Poor connection of cables • Defective high voltage supply board (C,G) • Defective I/O control board • Defective main control board.
Remedy: 1. Reinstall the charge corona unit properly or replace the charge corona unit. 2. Reconnect the connectors on the high voltage supply board (C,G), I/O control board, and main control board, or check the cables. 3. Check and clean the charge corona unit receptacle. 4. Replace the high voltage supply board (C,G). 5. Replace the I/O control board. 6. Replace the main control board. - Signals to Check - • Leak detection: CN201-1 or TP224 on I/O control board or TP162 on main control board
Code: SC302
Description: Charge corona grid voltage error - Timing - When the charge corona unit grid is on during printing or process control - Condition - The feedback voltage is 4.8V or higher, or the PMW value is 50% or higher for 500 ms continuously.
Causes: • Charge corona unit not installed properly • Poor connection of cables • Defective high voltage supply board (C,G) • Defective I/O control board • Defective main control board.
Remedy: 1. Reinstall the charge corona unit properly or replace the charge corona unit. 2. Reconnect the connectors on the high voltage supply board (C,G), I/O control board, and main control board, or check the cables. 3. Check and clean the charge corona unit receptacle. 4. Replace the high voltage supply board (C,G). 5. Replace the I/O control board. 6. Replace the main control board. - Signals to Check - • Leak detection: CN201-1 or TP224 on I/O control board or TP162 on main control board Signals to Check - • Feedback signal: CN201-3 or TP226 on I/O control board or CN302-A4 or TP160 on main control board • PWM: CN201-4 or TP237 on I/O control board
Code: SC320
Description: Polygon motor error - Condition - • The PMLOCK signal is not received by the LD main control board within a predetermined period of time.
Causes: • Poor connection of connector • Defective polygon motor • Defective LD main control board • Defective scanner IPU board
Remedy: 1. Check that the connector (CN602-4) on the LD control board is properly connected. 2. Check the continuity of cable. 3. Replace the polygon motor. 4. Replace the LD main control board. 5. Replace the scanner IPU board.
Code: SC322
Description: Laser synchronizing signal error - Timing & Condition - While the polygon motor is running and the laser diode is on, the LD main control board does not receive the laser synchronizing signal.
Causes: • Poor connection of connectors • Defective laser synchronizing detector board • Improper laser beam axis • Defective LD control board • Defective main control board • Defective optic housing unit
Remedy: 1. Check if the connectors (CN 604) are properly connected on the laser synchronizing detector board and LD main control board 2. Remove and clean the synchronizing detector board. 3. Check if anything such as the seal of the barrel toroidal lens in the optic housing unit interferes with the laser beam axis. 4. Replace the synchronizing detector board. 5. Check if the cable connectors (CN1 & CN605) on the LD drive board and LD main control board are properly connected or check the continuity of the cable. 6. Check if the cable connectors (CN601 & CN306) on the LD main control board and main control board are properly connected or check the continuity of the cable. 7. Replace the LD main control board. 8. Replace the main control board 9. Check the optical housing unit or replace it.