• Code: 270
• Description: Write ASIC communication error
• Causes: • Write/read values were checked twice but failed to match. • Parity error resulted after three attempts.
• Remedy: • Cycle the machine off/on. • Harness between OPU and BCU loose, broken, defective • IPU defective • BCU defective

• Code: 285
• Description: Line position adjustment (MUSIC) error Line position adjustment fails four consecutive times.
• Causes: • Pattern sampling error ( insufficient image density ) • Defective ID sensors for the line position adjustment • Defective image transfer belt unit • Defective PCDU(s) • Defective laser unit
• Remedy: • Check and reinstall the image transfer belt unit and PCDUs. • Check if each toner bottle has enough toner. • Replace the ID sensor. • Replace the image transfer belt unit. • Replace the PCDU(s). • Replace the laser unit.

• Code: 312
• Description: Charge P.P. output error [K]. The feedback voltage of the charge AC for each color is 0.3 V or less for 0.2 seconds after the charge AC has turned on.
• Causes: • Disconnected or broken harnesses of the HVPS: CB board • Defective PCDU • Defective HVPS
• Remedy: • Do the troubleshooting for “PCDU Installation (SC312, SC313, SC314, SC315)” • Check or replace the harnesses of the HVPS: CB board. • Reinstall or replace the PCDU. • Replace the HVPS: CB board.

• Code: 313
• Description: Charge P.P. output error [M]. The feedback voltage of the charge AC for each color is 0.3 V or less for 0.2 seconds after the charge AC has turned on.
• Causes: • Disconnected or broken harnesses of the HVPS: CB board • Defective PCDU • Defective HVPS
• Remedy: • Do the troubleshooting for “PCDU Installation (SC312, SC313, SC314, SC315)” • Check or replace the harnesses of the HVPS: CB board. • Reinstall or replace the PCDU. • Replace the HVPS: CB board.

• Code: 314
• Description: Charge P.P. output error [C]. The feedback voltage of the charge AC for each color is 0.3 V or less for 0.2 seconds after the charge AC has turned on.
• Causes: • Disconnected or broken harnesses of the HVPS: CB board • Defective PCDU • Defective HVPS
• Remedy: • Do the troubleshooting for “PCDU Installation (SC312, SC313, SC314, SC315)” • Check or replace the harnesses of the HVPS: CB board. • Reinstall or replace the PCDU. • Replace the HVPS: CB board.

• Code: 315
• Description: Charge P.P. output error [Y]. The feedback voltage of the charge AC for each color is 0.3 V or less for 0.2 seconds after the charge AC has turned on.
• Causes: • Disconnected or broken harnesses of the HVPS: CB board • Defective PCDU • Defective HVPS
• Remedy: • Do the troubleshooting for “PCDU Installation (SC312, SC313, SC314, SC315)” • Check or replace the harnesses of the HVPS: CB board. • Reinstall or replace the PCDU. • Replace the HVPS: CB board.

• Code: 325
• Description: Color development motor error The motor LOCK signal is not detected for more than two seconds while the motor START signal is on.
• Causes: • Color development motor slip due to an increase in the torque caused by connected components. • Defective motor.
• Remedy: • Adjust the torque properly by replacing or cleaning the PCDU. • Replace the PCDU. • Replace the development motor: CMY if load torque is normal.

• Code: 360
• Description: TD sensor (Vt high) error 1: K. • The Vt value of the black, magenta, cyan, or yellow TD sensor exceeds the specified value (default: 4.7V) with SP3020-002 for twenty counts. • The [Vt - Vtref] value of the black, magenta, cyan, or yellow TD sensor exceeds the specified value (default: 5.0V) with SP3020-001.
• Causes: • Black, magenta, cyan, or yellow TD sensor disconnected • Harness between TD sensor and PCDU defective • Defective TD sensor.
• Remedy: • Check the drawer connector. • Do the troubleshooting for “Light Density (SC360, SC361, SC362, SC363)”. • Replace the defective PCDU.