• Code: C963
• Description: Connection detection error between the IMG board and the LGC board
• Causes:
• Remedy: 1 LGC board Connector check (CN319, CN320) 2 IMG board Connector check (CN423, CN424, CN426) 3 Harness between the IMG board and the LGC board Harness check 4 Harness between the IMG board and the low-voltage power supply Harness check
  Harness between the IMG board and the LGC board LGC board If the problem is not corrected by the replacement of the LGC board, reinstall the removed LGC board and replace the IMG board. IMG board If the problem is not still corrected by the replacement of the IMG board, reinstall it and ask a specialist to repair it. (Abnormal ID) Harness between the IMG board and the low-voltage power supply

• Code: C970
• Description: High-voltage transformer abnormality: Leakage of the main charger is detected.
• Causes: Main charger
• Remedy: Main charger • Install check • Check if any foreign matter is on the needle electrode or main charger grid. • Harness check EPU tray (process unit) • Check if any foreign matter is adhering on the high-voltage terminal of the EPU tray. • Check if there is a sign of discharge on the joint of the high-voltage terminal of the EPU tray and the main charger. Correct if there is.

• Code: C9E0
• Description: Connection error between SLG board and SYS board
• Causes: SLG board If the problem is not corrected with the replacement of the SLG board, reinstall the removed SLG board and replace the IMG board. IMG board If the problem is still not corrected with the replacement of the IMG board, reinstall the removed IMG board and replace the SYS board. SYS board
• Remedy: SLG board • Connector check (CN12) • Board check IMG board • Connector check (CN421, CN422) • Board check SYS board • Connector check (CN135) • Board check

• Code: CA00
• Description: Image position alignment abnormality
• Causes:
• Remedy: < Invalidating image position alignment control > 1 [0] [8] Power ON 2 [4546] [START] 3 Set the value to “0” (not performed automatically). 4 Power OFF < Checking the abnormal status on image position alignment > 5 [0] [5] Power ON 6 [4720] [START] 7 Press the [START] button again, then check the displayed value. (05-4720-0: Displaying the cause of image position alignment detection error front and rear sides.) When the error [CA00] occurs, the value between 1 and 255 is displayed. (0: Detection normality on the front and rear sides) (The statues of total 8 sections (4 colors on the front and rear sides) are displayed.) 1 :Y on the rear side detection abnormality (*1) 2 : Y on the front side detection abnormality (*1) 3 : Y on the front and rear sides detection abnormality 4 : M on the rear side detection abnormality (*1) 8 : M on the front side detection abnormality (*1) 12 : M on the front and rear sides detection abnormality 16 : C on the rear side detection abnormality (*1) 32 : C on the front side detection abnormality (*1) 48 : C on the front and rear sides detection abnormality 64 : K on the rear side detection abnormality (*1) 85 : All colors on the rear side detection abnormality → (I) 128: K on the front side detection abnormality (*1) 170: All colors on the front side detection abnormality → (I) 192: K on the front and rear sides detection abnormality 255: All colors on the front and rear sides detection abnormality → (I) Other than the above: Multiple colors detection abnormality (*2) The adjustment value is the sum of (*1), which, as in the example below, specifies the cause of the detection abnormality. (E.g. 1) 05-4720-0 --- in case of 72 72 = 64 + 8 → K on the rear side / M on the front side detection abnormality (E.g. 2) 05-4720-0 --- in case of 146 146 = 128 + 18 = 128 + 16 + 2 → K on the front side / C on the rear side / Y on the front side detection abnormality 8 Press the [START] button 9 After [1] is pressed, then press the [START] button. 10 Check the displayed value. (05-4720-1: Displaying the cause of image position alignment detection error center side.) When the error [CA00] occurs, the value between 1 and 85 is displayed. (0: Detection normality on the center side) (The statues of total 4 sections (4 colors on the front and rear sides) are displayed.) 1 : Y on the center side detection abnormality (*3) 4 : M on the center side detection abnormality (*3) 16 : C on the center side detection abnormality (*3) 64 : K on the center side detection abnormality (*3) 85 : All colors on the center side detection abnormality → (I) Other than the above: Multiple colors detection abnormality (*4) The adjustment value is the sum of (*3), which, as in the example below, specifies the cause of the detection abnormality. (E.g. 1) 05-4720-1 --- in case of 65 65 = 64 + 1 → K on the center side / Y on the center side detection abnormality 11 If the adjustment value fits (I) in step 7 or 10, proceed to step (12). In other cases, proceed to step (30). →

• Code: CA10
• Description: Polygonal motor abnormality: The polygonal motor is not rotating normally.
• Causes: Polygonal motor Laser unit cooling fan (front) Laser unit cooling fan (rear) LGC board Laser optical unit
• Remedy: Polygonal motor Laser optical unit • Motor check (Perform the output check: 03-103) • Connector check (CN207) • Harness check Laser unit cooling fan (front) • Fan motor check (Perform the output check: 03-437) • Connector check • Harness check • Check if the suction areas of the laser unit cooling fan (front) and the laser unit cooling fan (rear) are plugged up. Laser unit cooling fan (rear) • Fan motor check (Perform the output check: 03-439) • Connector check • Harness check Polygonal motor • Motor check (Perform the output check: 03-103) • Connector check • Harness check LGC board • Connector check (CN329) • Board check Other • Perform the troubleshooting procedures for when an image control related/process related service call or an image failure occurs.

• Code: CA20
• Description: H-Sync detection error: H-Sync signal detection PC board cannot detect laser beams.
• Causes: LGC board Laser optical unit
• Remedy: Laser optical unit. • Connector check (relay connector CN212) • Harness check LGC board • Connector check (CN321, CN326) • +5V check (CN302 - 7pin) Check should be performed after the front cover and ADU are closed. • Board check Other • Check if the equipment is grounded.

• Code: CA47
• Description: SNS board abnormality: The SNS board does not operate due to disconnection or the harness breaking.
• Causes: LGC board Laser optical unit
• Remedy: Relay connector • Connector check (CN212) CNV board • Connector check • Harness check • Board check LGC board • Connector check (CN321) • Board check

• Code: CB00
• Description: Finisher not connected: Communication error has occurred between the equipment and finisher. [MJ-1103/1104]
• Causes: Finisher control board. LGC board
• Remedy: Harness (MFP - Finisher) • Connector check • Harness check Finisher control board • Connector check • Board check F/W Update the finisher firmware. F/W Update the Converter firmware. LGC board • Connector check • Board check