Description: 240 -001 C LD error: K 241 -004 C LD error: Y The bridge board 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 bridge board.
Code: 270
Description: Write ASIC communication error • Write/read values were checked twice but failed to match. • Parity error resulted after three attempts.
Causes: • Cycle the machine off/on. • Harness between OPU and BCU loose, broken, defective • Bridge board defective • BCU defective
Remedy: 1. Replace the harness between the BCU and bridge board. 2. Replace the bridge board. 3. Replace the BCU.
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.
Code: 291
Description: LDU shutter: Open position error The machine does not detect the correct open 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.
Code: 292
Description: LDU shutter: Close position error The machine does not detect the correct closed 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.