SC200 (Engine: Image Writing)

SC202-00

D

Polygon Motor: ON Timeout Error

After the polygon mirror motor (M27) turned on, or within the specified time (sec.) after the rpm’s changed, the motor did not turn normally.

• Polygon mirror motor (M27) or polygon motor driver defective
• The interface harness to the polygon motor driver damaged or not connected correctly.
• BICU defective
• Polygon mirror motor (M27) drive pulse cannot be output correctly. (Polygon controller)

• PSU defective (polygon power supply, fuse defective) 
  

• AC power supply voltage error

1. Check if the SC occurs by turning the power OFF then ON with the front door open. If the SC occurs again, do the following steps.
2. Reconnect the following connectors:
   • Laser Unit - BICU
   • Paper Transport IOB - BICU
     (CN587 / CN574 connectors on the BICU)
3. Reconnect the relay connector of the laser unit.
4. Replace the polygon mirror motor (M27).
5. Replace the BICU (PCB10).
6. Replace the harness between the laser unit and the BICU.
7. Replace the laser unit.
8. Check the outpur voltage (if there are any defects, replace the fuse).
9. Check the following harnesses:
   • Paper Transport IOB - BICU
   • Paper Transport IOB - PSU
     (CN164/CN152)
10. Replace the harness between the BICU and the Paper Transport IOB.

SC203-00

D

Polygon Motor: OFF Timeout Error

The polygon motor fails to stop within the specified time after receiving the signal to stop.

• Polygon mirror motor (M27) or polygon motor driver defective
• The interface harness to the polygon motor driver damaged or not connected correctly.
• BICU defective

1. Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps.
2. Check the following harnesses:
3. Laser Unit - BICU (CN587/CN574 connectors on the BICU)
4. Replace the polygon mirror motor (M27).
5. Replace the BICU (PCB10).
6. Replace the harness between the laser unit and the BICU.
7. Replace the laser unit.

SC204-00

D

Polygon Motor: XSCRDY Signal Error

The polygon motor fails to rotate correctly when running (printing).

• The interface harness to the polygon motor driver damaged or not connected correctly.
• Polygon mirror motor (M27) or polygon motor driver defective
• BICU defective
• PSU defective
• AC power supply voltage error

Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

1. Reconnect the following connectors:
   • Laser Unit - BICU
   • Paper Transport IOB - BICU
     (CN587 / CN574 connectors on the BICU)
2. Reconnect the relay connector of the laser unit.
3. Replace the polygon mirror motor (M27).
4. Replace the BICU (PCB10).
5. Replace the harness between the laser unit and the BICU.
6. Replace the laser unit.
7. Check the output voltage (if there are any defects, replace the fuse).
8. Check the following harnesses:
   • Paper Transport IOB - BICU
   • Paper Transport IOB - PSU
     (CN164/CN152)
9. Replace the harness between the BICU and the Paper Transport IOB. 

SC220-01

D

Leading Edge: LD1 synchronization detection error: Bk

SC220-04

D

Leading Edge: LD1 synchronization detection error: Ye

The synchronization detection signal (periodic write/scan signal) absent.

• The interface harness to the synchronization detection unit damaged or not connected correctly.
• Synchronization detection board defective
• Beam does not enter photo detector.
• LDB defective

1. Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps.
2. Remove the laser unit, and then check for condensation.
3. Reconnect the connectors between LDB (Synchronizing detector board) and BICU.
4. Replace the BICU (PCB10).
5. Replace the Laser unit.
6. Replace the harness between LDB (Synchronizing detector board) and BICU.

SC230-01

D

FGATE ON error: Bk

SC230-02

D

FGATE ON error: Cy

SC230-03

D

FGATE ON error: Ma

SC230-04

D

FGATE ON error: Ye

Write image length signal (FGATE signal) absent even at the time to start writing.

• BICU defective
• Harness between BICU and controller board defective

1. Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps.
2. Reconnect the connectors between BICU and controller board.
3. Replace the BICU (PCB10).
4. Replace the controller board (PCB11).

5. In the case of image quality degradation (horizontal streaks), also check SC220.

SC231-01

D

FGATE OFF error: Bk

SC231-02

D

FGATE OFF error: Cy

SC231-03

D

FGATE OFF error: Ma

SC231-04

D

FGATE OFF error: Ye

• BICU defective
• Harness between BICU and controller board defective

1. Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps.
2. Reconnect the connectors between BICU and controller board.
3. Replace the BICU (PCB10).
4. Replace the controller board (PCB11).

SC240-01

D

LD error: Bk

SC240-02

D

LD error: Cy

SC240-03

D

LD error: Ma

SC240-04

D

LD error: Ye

• If LD error terminal of LD driver of corresponding color is asserted after LD initialization.
• If an error is detected during initialization of LD driver which detects Ith/Ieta of LD of corresponding color.

• LD degradation (LD broken, shift of output characteristics etc.)
• The interface harness damaged or not connected correctly.
• LD driver defective

1. Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps.
2. Check the value in SP2-110-001 to 004 (LD Driver), the default is "0h".
   
   • If current value is "0", perform step 4.
   • If current value is "1", perform steps 3 and 5.
   • If current value is "2" to "FF", perform step 4.
3. Reconnect the connectors between LDB and BICU.
   (CN579 / CN580 / CN581 / CN582 / CN583 / CN584 / CN588 / CN589 connectors on the BICU, and relay connector of the laser unit)
4. Replace the Laser unit
5. Replace the harness between LDB to BICU.

SC272-01

D

LD driver communication error: Bk

SC272-02

D

LD driver communication error: Cy

SC272-03

D

LD driver communication error: Ma

SC272-04

D

LD driver communication error: Ye

Communication between the CPU and LD driver was not performed correctly.

• LDB defective
• BICU defective
• Harness defective

Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

1. Reconnect the following connectors:
   
   • LDB - BICU
      (CN583/CN584/CN588/CN589 connectors on the BICU, and relay connector of the laser unit)
2. Replace the BICU (PCB10).
3. Replace the laser unit.
4. Replace the following harness:
   
   • LDB - BICU harness

SC272-10

D

LD driver communication error: Other

LD voltage does not satisfy the specified voltage (5 V).

• BICU defective (LD5V Power error)
• LDB defective (LD drive error)
• LDB connector defective (loose, broken)
• Interlock switch defective

1. Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps.

2. Check SP2-110-010.

   In the case of lower 3-bit 111: Power supply voltage is normal => Perform Step 4, 8, 10, and then 9.

   In the case of lower 3-bit 100: BISU/LSU error => Perform Step 8 and then 9, and then perform Step 2 again.

   In the case of lower 3-bit 110: Writing unit error / harness error => Perform Step 4, 9, 10, and then 8.

   In the case of lower 3-bit 000: Voltage defect / power supply line defect between IOB and BICU => Perform Step 4, 5, 6, and then 7, and then perform Step 2 again.

3. Disconnect the harness between the LDB and BICU (CN583/CN584/CN588/CN589 connectors on BICU), and then perform Step 1 and then 2 to check whether the value of SP changes.

4. Reconnect the following connectors:

   • LDB - BICU  (CN583/CN584/CN588/CN589 connectors on the BICU, and relay connector of the laser unit)

5. Reconnect the following connectors:

   • Laser Unit - BICU
   • Paper Transport IOB - BICU (CN574 on the BICU)
6. Check the following harnesses:
   • Paper Transport IOB - BICU
   • Paper Transport IOB - PSU
     (CN164/CN152)
7. Check whether the interlock switch is assembled correctly.
8. Replace the BICU (PCB10).

9. Replace the laser unit.

10. Replace the following harness:

    • Laser Unit - BICU harness

SC285-01

C

Skew Motor (in LD unit) Power Control Error

The power supply from PSU is not supplied to the skew motors.

• Software error
• Imaging IOB defective

• BICU defective

Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

1. Update the firmware.
2. Replace the imaging IOB (PCB2).
3. Replace the BICU (PCB10).

SC285-02

C

MUSIC error

The results of MUSIC pattern reading failed 4 times.

(even if mode e (real time MUSIC) fails, the error count is not incremented (+1))

For details about cause and solution, refer to "When SC285-02 (MUSIC Error) is displayed".

SC285-03

C

Insufficient MUSIC patterns

For details about cause and solution, refer to "When SC285-03 (Insufficient MUSIC patterns) is Displayed".