Description: FGATE ON error: C The PFGATE ON signal does not assert within 5 seconds after processing the image in normal job or MUSIC (line position adjustment) for start position [C].
Causes: • Defective ASIC • Poor connection between controller and BCU. • Defective BCU
Remedy: 1. Check the connection between the controller board and the BCU. 2. Replace the BCU. 3. Replace the controller board.
Code: 237
Description: FGATE OFF error: C • The PFGATE ON signal still asserts within 5 seconds after processing the image in normal job or MUSIC (line position adjustment) for end position [C]. • The PFGATE ON signal still asserts when the next job starts.
Causes: • Defective ASIC • Poor connection between controller and BCU. • Defective BCU
Remedy: 1. Check the connection between the controller board and the BCU. 2. Replace the BCU. 3. Replace the controller board.
Code: 240
Description: LD error: K The BCU 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 unit. 3. Replace the controller.
Code: 241
Description: LD error: Y The BCU 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 unit. 3. Replace the controller.
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 PCDU(s) • Defective laser unit
Remedy: 1. Check and reinstall the image transfer belt unit and PCDU(s). 2. Check if each toner bottle has enough toner. 3. Replace the ID sensor. 4. Replace the image transfer belt unit. 5. Replace the PCDU(s). 6. Replace the laser unit.
Code: 290
Description: LDU shutter: Home position error The machine does not detect the home position of the LDU shutter.
Causes: • Defective LDU shutter motor • LDU shutter broken • Overload on the LDU shutter motor • Defective LDU shutter sensor • Loose or disconnected harnesses between LDU shutter motor and BCU • Defective BCU
Remedy: 1. Replace the LDU shutter. 2. Replace the LDU shutter motor. 3. Replace the harnesses between LDU shutter motor and BCU. 4. Replace the BCU.