{"id":20946,"date":"2020-06-29T18:29:38","date_gmt":"2020-06-29T18:29:38","guid":{"rendered":"http:\/\/localhost\/bizhubtroubleshooter\/?post_type=epkb_post_type_1&p=20946"},"modified":"2023-12-13T18:33:31","modified_gmt":"2023-12-13T18:33:31","slug":"c2559-c255a-c255b-bizhub-750i","status":"publish","type":"epkb_post_type_1","link":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/?epkb_post_type_1=c2559-c255a-c255b-bizhub-750i","title":{"rendered":"C2559, C255A, C255B (bizhub 750i)"},"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>C2559: Cyan TCR sensor adjustment failure

C255A: Magenta TCR sensor adjustment failure

C255B: Yellow TCR sensor adjustment failure<\/td><\/tr>
Rank<\/td>B<\/td><\/tr>
Trouble detection condition<\/td>TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.<\/td><\/tr>
Trouble isolation<\/td>–<\/td><\/tr>
Relevant electrical parts<\/td>-Developing unit\/C,M,Y
-Toner cartridge motor\/YM (M10)
-Toner cartridge motor\/CK (M25)
-Toner supply motor\/Y (M9)
-Toner supply motor\/M (M8)
-Toner supply motor\/C (M7)
-Expansion control board (EXCB)
-CPU board (CPUB)
-Base board (BASEB)<\/td><\/tr><\/tbody><\/table>\n\n\n\n

Procedure<\/h2>\n\n\n\n
  1. Reinstall the developing unit.<\/li>
  2. Check the connector between the developing unit\/C-relay CN251-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2559)<\/li>
  3. Check the connector between the developing unit\/M-relay CN250-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C255A)<\/li>
  4. Check the connector between the developing unit\/Y-relay CN249-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C255B)<\/li>
  5. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.<\/li>
  6. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.<\/li>
  7. Check CPUB for proper installation and correct as necessary.<\/li>
  8. M10, M25 operation check