• Code: 398-003
• Description: Drum rotation error: M Drum abnormal rotation error The drum rotation pulse for a color changes more than ±20% compared with the standard rotation pulse.
• Causes: • Drum cleaning blade turned up (flipped) • Waste toner stuck in the drum cleaning unit • Drum filming • Developer stuck in the development unit • Motor lock due to the overload to the drum motor • Defective drum rotation sensor or harness • Defective drum motor • Defective or dirty drum encoder
• Remedy: 1. Check if the drum cleaning blade is bent. 2. Check or replace the drum cleaning unit. 3. Check or replace the development unit. 4. Check the harness connection. 5. Replace the drum rotation sensor 6. Replace the drum motor 7. Replace the drum encoder.

• Code: 399-001
• Description: Drum rotation error: Y Drum stop error The drum encoder counter for a color does not increase for 20 ms while the drum motor is rotating.
• Causes: • Drum cleaning blade turned up (flipped) • Waste toner stuck in the drum cleaning unit • Drum filming • Developer stuck in the development unit • Motor lock due to the overload to the drum motor • Defective drum rotation sensor or harness • Defective drum motor • Defective or dirty drum encoder
• Remedy: 1. Check if the drum cleaning blade is bent. 2. Check or replace the drum cleaning unit. 3. Check or replace the development unit. 4. Check the harness connection. 5. Replace the drum rotation sensor 6. Replace the drum motor 7. Replace the drum encoder.

• Code: 399-002
• Description: Drum rotation error: Y Drum rotation speed error The drum rotation time for a color change is more than ±5% compared with a previous rotation time after 4 seconds has elapsed from the drum start.
• Causes: • Drum cleaning blade turned up (flipped) • Waste toner stuck in the drum cleaning unit • Drum filming • Developer stuck in the development unit • Motor lock due to the overload to the drum motor • Defective drum rotation sensor or harness • Defective drum motor • Defective or dirty drum encoder
• Remedy: 1. Check if the drum cleaning blade is bent. 2. Check or replace the drum cleaning unit. 3. Check or replace the development unit. 4. Check the harness connection. 5. Replace the drum rotation sensor 6. Replace the drum motor 7. Replace the drum encoder.

• Code: 399-003
• Description: Drum rotation error: Y Drum abnormal rotation error The drum rotation pulse for a color changes more than ±20% compared with the standard rotation pulse.
• Causes: • Drum cleaning blade turned up (flipped) • Waste toner stuck in the drum cleaning unit • Drum filming • Developer stuck in the development unit • Motor lock due to the overload to the drum motor • Defective drum rotation sensor or harness • Defective drum motor • Defective or dirty drum encoder
• Remedy: 1. Check if the drum cleaning blade is bent. 2. Check or replace the drum cleaning unit. 3. Check or replace the development unit. 4. Check the harness connection. 5. Replace the drum rotation sensor 6. Replace the drum motor 7. Replace the drum encoder.

• Code: 400
• Description: ID sensor error: Calibration Before adjustment Vsg_reg<0.5, but Vsg_reg could not be adjusted to the target Vsg_reg = 4.0 ±0.5V during process control.
• Causes: • ID sensor harness disconnected, loose, defective • ID sensor dirty • ID sensor defective • ID/ MUSIC sensor shutter defective • ITB dirty
• Remedy: 1. Check the harness connection. 2. Clean or replace the ID/ MUSIC sensors. 3. Replace the ITB cleaning unit.

• Code: 410
• Description: ID sensor error: Development K. D evelopment gamma for black, magenta, cyan, or yellow is not within range (0.3 to 6.0). Process control halts when this SC is issued.
• Causes: • ID/ MUSIC sensor shutter defective • LD sensor harness loose, broken, defective • LD unit not firing • CGB HVPS harness loose, broken, defective • CGB HVPS defective • Developer worn
• Remedy: 1. Replace the ID/ MUSIC sensors. 2. Check the harness connection to the LD unit. 3. Replace the LD unit. 4. Check the harness connection to the CGB HVPS. 5. Replace the CGB HVPS. 6. Replace the developer.

• Code: 411
• Description: ID sensor error: Development C. Development gamma for black, magenta, cyan, or yellow is not within range (0.3 to 6.0). Process control halts when this SC is issued.
• Causes: • ID/ MUSIC sensor shutter defective • LD sensor harness loose, broken, defective • LD unit not firing • CGB HVPS harness loose, broken, defective • CGB HVPS defective • Developer worn
• Remedy: 1. Replace the ID/ MUSIC sensors. 2. Check the harness connection to the LD unit. 3. Replace the LD unit. 4. Check the harness connection to the CGB HVPS. 5. Replace the CGB HVPS. 6. Replace the developer.

• Code: 412
• Description: ID sensor error: Development M. Development gamma for black, magenta, cyan, or yellow is not within range (0.3 to 6.0). Process control halts when this SC is issued.
• Causes: • ID/ MUSIC sensor shutter defective • LD sensor harness loose, broken, defective • LD unit not firing • CGB HVPS harness loose, broken, defective • CGB HVPS defective • Developer worn
• Remedy: 1. Replace the ID/ MUSIC sensors. 2. Check the harness connection to the LD unit. 3. Replace the LD unit. 4. Check the harness connection to the CGB HVPS. 5. Replace the CGB HVPS. 6. Replace the developer.