{"id":17293,"date":"2019-10-22T17:10:56","date_gmt":"2019-10-22T17:10:56","guid":{"rendered":"http:\/\/localhost\/bizhubtroubleshooter\/?post_type=epkb_post_type_1&p=17293"},"modified":"2023-12-18T14:53:09","modified_gmt":"2023-12-18T14:53:09","slug":"c2555-bizhub-c759-c659","status":"publish","type":"epkb_post_type_1","link":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/?epkb_post_type_1=c2555-bizhub-c759-c659","title":{"rendered":"C2555 (bizhub C759\/C659)"},"content":{"rendered":"\n

Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.<\/strong><\/p>\n\n\n\n

Contents<\/h2>\n\n\n\n
Trouble type<\/td>C2555: Abnormally low toner density detected yellow TCR sensor<\/td><\/tr>
Rank<\/td>B<\/td><\/tr>
Trouble detection condition<\/td>When sampling data is determined in TC ratio calculation control, TCR sensor output is lower than a predetermined value for a predetermined number of times in a row even though there is toner in the sub hopper.<\/td><\/tr>
Trouble isolation<\/td>\u2013<\/td><\/tr>
Relevant electrical parts<\/td>-Imaging unit\/C
-Imaging unit\/M
-Imaging unit\/Y
-Toner cartridge\/C
-Toner cartridge\/M
-Toner cartridge\/Y
-Toner empty sensor\/C (RS\/C)
-Toner empty sensor\/M (RS\/M)
-Toner empty sensor\/Y (RS\/Y)
-Toner supply motor\/Y (M9)
-Toner supply motor\/M (M10)
-Toner supply motor\/C (M11)
-Toner cartridge motor\/YM (M13)
-Toner cartridge motor \/CK (M14)
-Process drive board (PDB)
-MFP board (MFPB)<\/td><\/tr><\/tbody><\/table>\n\n\n\n

 Procedure<\/h2>\n\n\n\n
  1. Perform image troubleshooting procedure if image density is low.<\/li>
  2. Reinstall the imaging unit.<\/a><\/li>
  3. Reinstall the toner cartridge.<\/a><\/li>
  4. Check the connector between M9-relay CN258-PDB CN8 for proper connection and correct as necessary.<\/li>
  5. Check the connector between M10-relay CN258-PDB CN8 for proper connection and correct as necessary.<\/li>
  6. Check the connector between M11-relay CN258-PDB CN8 for proper connection and correct as necessary.<\/li>
  7. Check the connector between M13-relay CN320-relay CN330-PDB CN7 for proper connection and correct as necessary.<\/li>
  8. Check the connector between M14-relay CN321-relay CN428-PDB CN7 for proper connection and correct as necessary.<\/li>
  9. Check the connector of M9, M10, M11, M13, M14 for proper drive coupling and correct as necessary.<\/li>
  10. Check the connector between RS\/C-relay CN291-relay CN265-MFPB CN4E for proper connection and correct as necessary.<\/li>
  11. Check the connector between RS\/M-relay CN246-relay CN265-MFPB CN4E for proper connection and correct as necessary.<\/li>
  12. Check the connector between RS\/Y-relay CN247-relay CN265-MFPB CN4E for proper connection and correct as necessary.<\/li>
  13. RS\/C, RS\/M, RS\/Y I\/O check, sensor check