• Code: 328
• Description: LD unit H.P. error 2 The LD unit H.P. sensor does not detect an off condition when the LD unit moves from its home position.
• Causes: • H.P. sensor/harness defective • LD positioning/harness motor defective • LD unit movement blocked because of incorrect connector routing

• Code: 329
• Description: LD unit beam pitch adjusted incorrectly The LD unit H.P. sensor does not detect the ON condition while changing the LD unit position to correct the LD position or to adjust the dpi.
• Causes: • After initialization of the SP modes, SP2109-03 or SP2109-04 was not executed. • The harness is blocking the LD drive (PCB), preventing adjustment of the pitch

• Code: 350
• Description: ID sensor pattern test error One of the following ID sensor output voltages was detected twice consecutively when checking the ID sensor pattern. Vsp>=2.5 V Vsg<=2.5 V Vsp = 0 V
• Causes: • ID sensor defective • ID sensor connector defective • Poor ID sensor connector connection • I/O board (IOB) defective • High voltage supply board defective • ID sensor dirty • Defect at ID sensor pattern writing area of the drum

• Code: 351
• Description: ID sensor Vsg test error When ID sensor checks the drum surface, VSG = 0, or PWM = 0
• Causes: • ID sensor defective • ID sensor connector defective • Poor ID sensor connection • I/O board (IOB) defective • Scanning system defective • High voltage supply board defective • ID sensor dirty • Defect at the ID sensor pattern writing area of the drum

• Code: 352
• Description: ID sensor edge detect pattern error At 800 ms intervals, the value of the ID sensor edge pattern voltage was not 2.5 V for 2 consecutive attempts.
• Causes: • ID sensor defective • ID sensor connector defective • Poor ID sensor connector connection • I/O board (IOB) defective • High voltage supply board defective • Dirty ID sensor • Defect at the ID sensor pattern writing area of the drum

• Code: 353
• Description: LED current abnormal at initialization during ID sensor adjustment 353 C At ID sensor initialization, one of the following is detected: At PWM = 255, VSG < 4.0 V At PWM = 0, VSG>=4.0 V
• Causes: • ID sensor defective • ID sensor harness defective • ID sensor connector defective • Poor ID sensor connection • I/O board (IOB) defective • Exposure system defective • High voltage supply board defective • Dirty ID sensor

• Code: 354
• Description: ID sensor adjustment timeout error VSG out of the adjustment target range (4.0 ± 0.2 V) within 20 s at VSG initialization.
• Causes: • ID sensor defective • ID sensor harness defective • ID sensor connector defective • I/O board (IOB) defective • Exposure system defective • Poor ID sensor connector connection • High voltage supply board defective • Dirty ID sensor

• Code: 390
• Description: TD sensor error: Test value abnormal TD sensor output voltage is less than 0.5 V or more than 4.8 V after 10 consecutive times during printing.
• Causes: • TD sensor defective • TD sensor not connected or connector damaged • Poor connection between the TD sensor and the I/O board (IOB) • I/O board (IOB) defective • Toner supply defective