• Code: 2563
• Description: Yellow TCR sensor failure
  TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Causes: • Imaging unit/Y,M,C,K • Printer control board (PRCB)
• Remedy: 1 Reinstall imaging unit - - 2 Check the connector between imaging unit-PRCB CN18, CN19 for proper connection and correct as necessary. - - 3 Replace the imaging unit - - 4 Replace PRCB

• Code: 2564
• Description: Black TCR sensor failure
  TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
• Causes: • Imaging unit/Y,M,C,K • Printer control board (PRCB)
• Remedy: 1 Reinstall imaging unit - - 2 Check the connector between imaging unit-PRCB CN18, CN19 for proper connection and correct as necessary. - - 3 Replace the imaging unit - - 4 Replace PRCB

• Code: 2650
• Description: Main backup media access error
  • When an error is detected at the data reading process. • The re-written data, which has been read out, checked and founded as error, is read out again and found as error. • The error was found when reading out the counter value.
• Causes: • MFP board (MFPB) • Printer control board (PRCB)
• Remedy: 1 Check the harness from MFPB to PRCB for proper connection and correct as necessary. - - 2 Replace MFPB - - 3 Replace PRCB - - 1. Check that the trouble code “4802” appears and then display service mode. 2. Touch [Engine Data Backup]. 3. Touch [Engine Data Backup]. 4. Touch [Engine Data Reflect Mode], and touch [OK]. 5. Check that the result “OK” appears. 6. Turn OFF the main power switch and turn it ON again more than 10 seconds after. 7. Update the PRCB firmware. 8. Make the specified readjustments. 4 If the above actions do not solve the problem, contact KM.

• Code: 2A21
• Description: Toner cartridge/C new release failure
  The status with the new cartridge is not cleared after the new toner cartridge is set.
• Causes: • Toner cartridge/C,M,Y,K • Printer control board (PRCB)
• Remedy: 1 Check the connector between toner cartridge-relay CN79-EXCB CN4 for proper connection and correct as necessary. - - 2 Clean the connection between the toner cartridge and the machine if dirty. - - 3 Reinstall the toner cartridge 4 Check the harness for proper connection and correct as necessary. - - 5 Check the connector between EXCB CN2-PRCB CN11 for proper connection and correct as necessary. - - 6 Replace the toner cartridge - - 7 Replace PRCB

• Code: 2A22
• Description: Toner cartridge/M new release failure
  The status with the new cartridge is not cleared after the new toner cartridge is set.
• Causes: • Toner cartridge/C,M,Y,K • Printer control board (PRCB)
• Remedy: 1 Check the connector between toner cartridge-relay CN79-EXCB CN4 for proper connection and correct as necessary. - - 2 Clean the connection between the toner cartridge and the machine if dirty. - - 3 Reinstall the toner cartridge 4 Check the harness for proper connection and correct as necessary. - - 5 Check the connector between EXCB CN2-PRCB CN11 for proper connection and correct as necessary. - - 6 Replace the toner cartridge - - 7 Replace PRCB

• Code: 2A23
• Description: Toner cartridge/Y new release failure
  The status with the new cartridge is not cleared after the new toner cartridge is set.
• Causes: • Toner cartridge/C,M,Y,K • Printer control board (PRCB)
• Remedy: 1 Check the connector between toner cartridge-relay CN79-EXCB CN4 for proper connection and correct as necessary. - - 2 Clean the connection between the toner cartridge and the machine if dirty. - - 3 Reinstall the toner cartridge 4 Check the harness for proper connection and correct as necessary. - - 5 Check the connector between EXCB CN2-PRCB CN11 for proper connection and correct as necessary. - - 6 Replace the toner cartridge - - 7 Replace PRCB

• Code: 2A24
• Description: Toner cartridge/K new release failure
  The status with the new cartridge is not cleared after the new toner cartridge is set.
• Causes: • Toner cartridge/C,M,Y,K • Printer control board (PRCB)
• Remedy: 1 Check the connector between toner cartridge-relay CN79-EXCB CN4 for proper connection and correct as necessary. - - 2 Clean the connection between the toner cartridge and the machine if dirty. - - 3 Reinstall the toner cartridge 4 Check the harness for proper connection and correct as necessary. - - 5 Check the connector between EXCB CN2-PRCB CN11 for proper connection and correct as necessary. - - 6 Replace the toner cartridge - - 7 Replace PRCB

• Code: 3201
• Description: Fusing motor malfunction
  The motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Causes: • Fusing motor (M2) • Printer control board (PRCB)
• Remedy: 1 Check the connector between M2-PRCB CN9 for proper connection and correct as necessary. - - 2 Check the loading status of the fusing unit drive, and correct the error as necessary. - - 3 M2 operation check PRCB CN9-9 to 12 15-C 4 Replace M2 - - 5 PRCB F9 conduction check - - 6 Replace PRCB