• Code: SC191
• Description: Bar code scan error - Timing - When the main switch is turned on - Condition - The main scanner IPU board detects that the pattern of the bard code scanned in is not appropriate.
• Causes: • Non-standard bar code label • Improper location of bar code • Dirty bar code • Defective main scanner IPU board • Defective main control board
• Remedy: 1. Check if the bar code is damaged or scratched. 2. Clean the optics section such as mirrors and lens and bar code. 3. Check if the mirrors are properly set on the 1st and 2nd scanners. If the spring plate, which is fix the position of mirrors, is out of position, it causes the light axis to change. 4. Replace the main scanner IPU board. 5. Replace the main control board.

• Code: SC192
• Description: Bar code number mismatch - Timing - When the main switch is turned on - Condition - The main control board detects that the bar code data scanned in does not match to the machine identification number stored in the RAM.
• Causes: • Defective RAM board • Defective main scanner IPU board • Defective main control board
• Remedy: 1. Check if the serial number stored in the RAM is correct. NOTE: Contacts your product specialist for the detailed procedure. 2. Replace the main scanner IPU board. 3. Replace the main control board.

• Code: SC193
• Description: IDU error - Timing - When the main switch is turned on - Condition - The IDU runs a diagnostic at power-on. Any hardware errors are detected during the diagnostics.
• Causes: • Defective IDU • Defective sub/main scanner IPU board
• Remedy: 1. Perform the scanner IPU board test (SP4- 904-001 and 002). If not OK, replace the main and/or scanner IPU board. SP4-904-001 or 002 0: OK 25 or 35: Replace sub scanner IPU board. Others: Replace main scanner IPU board. 2. Replace the IDU board.

• Code: SC195
• Description: Serial number error - Timing - When the main switch is turned on - Condition - The serial number entered or stored in RAM is not correct.
• Causes: • Improper serial number • RAM board is replaced. • Defective RAM
• Remedy: 1. Check and re-enter the serial number properly. NOTE: Contacts your product specialist for the detailed procedure.

• Code: SC301
• Description: Charge current leak - Timing - When the main charge is ON in the printing process or process control mode - Condition - The current leak is detected for 2 seconds.
• Causes: • Charge corona unit not installed properly • Poor connection of harnesses • Defective high voltage supply board (C/G/B) • 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/B), I/O control board, and main control board, or check the harnesses. 3. Check and clean the charge corona unit receptacle. 4. Replace the high voltage supply board (C/G/B). 5. Replace the I/O control board. 6. Replace the main control board. [Signal Check] • Leak detection: CN217-7 or TP120 on the I/O control board

• Code: SC302
• Description: Charge corona grid voltage error - Timing - When the main charge grid is ON in the printing process or process control mode - Condition - The feedback voltage is 4.8V or higher, or PMW value is 50% or higher for 500msec continuously.
• Causes: • Charge corona unit not installed properly • Poor connection of harnesses • Defective high voltage supply board (C/G/B) • 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/B), I/O control board, and main control board, or check the harnesses. 3. Check and clean the charge corona unit receptacle. 4. Replace the high voltage supply board (C/G/B). 5. Replace the I/O control board. 6. Replace the main control board. [Signal Check] • Feedback signal: CN217-5, TP173, or CN211-A6 on the I/O control board or CN302-A4 or TP107 on the main control board • PWM: CN217-6 or TP140 on the I/O control board

• Code: SC303
• Description: Charge cleaner motor error - Timing - When the charge cleaner starts - Condition - • Over-current is detected for 10 seconds when the cleaner pads start moving from rear to front. • Over-current is still not detected 1 minute after the cleaner motor turns on.
• Causes: • Poor connection • Defective cleaner motor • Cleaner pad locked • Defective I/O control board • Defective main control board
• Remedy: 1. Make sure the connectors (CN861 & CN829) are firmly connected. 2. Make sure the charge corona unit is properly installed. 3. Clean the screw shaft if it is dirty. 4. See if the cleaner pad is mechanically locked. 5. Make sure the connector is firmly connected on the I/O control board (CN219). 6. Replace the I/O control board. 7. Replace the main control board.

• Code: SC320
• Description: Polygon motor error - Condition - • The polygon motor rotation speed stays out of the range 22 seconds after the main switch is turned on. • The polygon motor rotation speed changes while the main power switch is ON. (Polygon motor should keep rotating with constant speed while the main switch is ON.)
• Causes: • Poor connection • Defective polygon motor • Defective LD control board • Defective main scanner IPU board
• Remedy: 1. Make sure the connector (CN602-5) on the LD control board is properly connected. 2. Test the current through the harness. 3. Replace the polygon motor. 4. Replace the LD control board. 5. Replace the main scanner IPU board. [Signal Check] • Motor OK: CN602-2 on the LD control board.