Description: LD error: Bk The BICU detects LDB error a few times consecutively when LDB unit turns on after LDB initialization.
Causes: Worn-out LD. Disconnected or broken harness of the LD
Remedy: 1. Replace the harness of the LD. 2. Replace the laser optics housing unit. 3. Replace the BICU.
Code: 241
Description: LD error: Y The BICU detects LDB error a few times consecutively when LDB unit turns on after LDB initialization.
Causes: Worn-out LD. Disconnected or broken harness of the LD
Remedy: 1. Replace the harness of the LD. 2. Replace the laser optics housing unit. 3. Replace the BICU.
Code: 242
Description: LD error: M The BICU detects LDB error a few times consecutively when LDB unit turns on after LDB initialization.
Causes: Worn-out LD. Disconnected or broken harness of the LD
Remedy: 1. Replace the harness of the LD. 2. Replace the laser optics housing unit. 3. Replace the BICU.
Code: 243
Description: LD error: C The BICU detects LDB error a few times consecutively when LDB unit turns on after LDB initialization.
Causes: Worn-out LD. Disconnected or broken harness of the LD
Remedy: 1. Replace the harness of the LD. 2. Replace the laser optics housing unit. 3. Replace the BICU.
Code: 285
Description: Line position adjustment (MUSIC) error Line position adjustment fails four consecutive times.
Causes: Pattern sampling error (insufficient image density). Defective ID sensors for the line position adjustment. Defective image transfer belt unit. Defective PCU(s). Defective laser optics housing unit.
Remedy: 1. Do the recovery procedure for SC285 (see "Laser Optics Housing Unit" in "Replacement & Adjustment"). 2. Check and reinstall the image transfer belt unit and PCUs. 3. Check if each toner bottle has enough toner. 4. Replace the ID sensor. 5. Replace the image transfer belt unit. 6. Replace the PCU(s). 7. Replace the laser optics housing unit.
Code: 290
Description: Shutter sensor time over error: Close The shutter close sensor does not detect "ON" for 2000msec after the shutter motor turns on.
Causes: Defective shutter close sensor. Disconnected or broken harness. Defective shutter motor. Defective shutter. Shutter motor overload. Defective IOB.
Remedy: 1. Check or replace the harness. 2. Replace the shutter on the laser optics housing unit. 3. Replace the shutter motor. 4. Replace the shutter close sensor. 5. Replace the IOB.