• Code: 240
• Description: LD error The bridge board detected a problem at the LD unit.
• Causes: • Worn-out LD • Disconnected or broken harness of the LD.
• Remedy:

• Code: 270
• Description: GAVD communication error • The I2C bus device ID is not identified during initialization. • A device-status error occurs during I2C bus communication. • The I2C bus communication is not established due to an error other than a buffer shortage.
• Causes: • BCU, Bridge board harness loose or broken • Defective bridge board • Defective BCU • Defective LD controller board
• Remedy:

• Code: 302
• Description: Charge roller bias leak A charge roller bias leak signal was detected.
• Causes: • Charge roller damaged • High voltage supply board defective • PCDU harness defective or disconnected
• Remedy:

• Code: 304
• Description: Charge roller bias correction leak The charge roller bias correction is performed twice even if the maximum charge roller bias (-2000V) is applied to the roller.
• Causes: • ID sensor defective • Worn charge roller • Charge roller damaged
• Remedy:

• Code: 320
• Description: Development roller bias leak The development roller bias leak is detected for 60 ms after the high voltage has been supplied to the development unit.
• Causes: • Development bias leak • Broken harness • Defective high voltage power supply, voltage supply • Defective high voltage supply unit
• Remedy:

• Code: 324
• Description: Development paddle motor error The machine detects a lock signal error from the development puddle motor for 2 seconds after the drum motor has turned on.
• Causes: • Overload on the development puddle motor • Defective development puddle motor • Defective harness • Defective IOB
• Remedy:

• Code: 350
• Description: ID sensor pattern test error One of the following readings occurred 10 times in the ID sensor output when the ID sensor pattern was checked: 1) Vsp > 2.5V 2) Vsg < 2.5V 3) Vsp =0V 4) Vsg = 0V
• Causes: • ID sensor connector defective • Poor ID sensor connector connection • I/O board (IOB) defective • Poor writing of ID sensor pattern on the drum • High voltage supply board defective
• Remedy:

• Code: 351
• Description: ID sensor Vsg test error When the ID sensor was checked, the ID sensor output voltage is 5.0V while the LED current value is 0.
• Causes: • ID sensor defective or dirty • ID sensor connector defective • Poor ID sensor connection • I/O board (IOB) defective • High voltage supply board defective • Defect at the ID sensor pattern writing area of the drum
• Remedy: