{"id":20941,"date":"2020-06-29T18:24:24","date_gmt":"2020-06-29T18:24:24","guid":{"rendered":"http:\/\/localhost\/bizhubtroubleshooter\/?post_type=epkb_post_type_1&p=20941"},"modified":"2023-12-13T18:34:00","modified_gmt":"2023-12-13T18:34:00","slug":"c2552-c2554-c2556-c2558-bizhub-c750i","status":"publish","type":"epkb_post_type_1","link":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/?epkb_post_type_1=c2552-c2554-c2556-c2558-bizhub-c750i","title":{"rendered":"C2552, C2554, C2556, C2558 (bizhub C750i)"},"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>C2552: Abnormally high toner density detected cyan TCR sensor

C2554: Abnormally high toner density detected magenta TCR sensor

C2556: Abnormally high toner density detected yellow TCR sensor

C2558: Abnormally high toner density detected black TCR sensor<\/td><\/tr>
Rank<\/td>B<\/td><\/tr>
Trouble detection condition<\/td>The TC ratio of the toner determined by the toner replenishment control is detected to be the predetermined value or over for consecutive times.<\/td><\/tr>
Trouble isolation<\/td>–<\/td><\/tr>
Relevant electrical parts<\/td>-Developing unit\/C,M,Y,K
-Toner cartridge\/C,M,Y,K
-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. Reinstall the toner cartridge.<\/li>
  3. Check the connector between the developing unit\/C-relay CN251-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2552)<\/li>
  4. Check the connector between the developing unit\/M-relay CN250-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2554)<\/li>
  5. Check the connector between the developing unit\/Y-relay CN249-relay CN248-EXCB CN6EX for proper connection and correct as necessary. (C2556)<\/li>
  6. Check the connector between the developing unit\/K-relay CN252-relay CN25-EXCB CN4EX for proper connection and correct as necessary. (C2558)<\/li>
  7. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.<\/li>
  8. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.<\/li>
  9. Check CPUB for proper installation and correct as necessary.<\/li>
  10. Replace the corresponding developing unit.<\/a>
    (C Part# ACV80KD, M Part# ACV80ED, Y Part# ACV808D, K Part# ACV803D)<\/li>
  11. Replace EXCB.<\/a> (Part# AA7NH00500)<\/li>
  12. Replace CPUB.<\/a> (Part# ACKNH02P03)<\/li>
  13. Replace BASEB.<\/a> (Part# ACKNH02101)<\/li><\/ol>\n\n\n\n

    (Link to the Field Service Manual)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers. Contents Trouble type C2552: Abnormally high toner density detected cyan TCR sensor C2554: Abnormally high toner density detected magenta TCR sensor C2556: Abnormally high toner density detected yellow TCR sensor C2558: Abnormally high toner … <\/p>\n

    Continue reading “C2552, C2554, C2556, C2558 (bizhub C750i)”<\/span><\/a><\/p>\n","protected":false},"author":231,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"epkb_post_type_1_category":[1283],"epkb_post_type_1_tag":[],"class_list":["post-20941","epkb_post_type_1","type-epkb_post_type_1","status-publish","hentry","epkb_post_type_1_category-c2-c750i-trouble"],"_links":{"self":[{"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/epkb_post_type_1\/20941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/epkb_post_type_1"}],"about":[{"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/types\/epkb_post_type_1"}],"author":[{"embeddable":true,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/users\/231"}],"replies":[{"embeddable":true,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=20941"}],"version-history":[{"count":2,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/epkb_post_type_1\/20941\/revisions"}],"predecessor-version":[{"id":22612,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/epkb_post_type_1\/20941\/revisions\/22612"}],"wp:attachment":[{"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20941"}],"wp:term":[{"taxonomy":"epkb_post_type_1_category","embeddable":true,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=%2Fwp%2Fv2%2Fepkb_post_type_1_category&post=20941"},{"taxonomy":"epkb_post_type_1_tag","embeddable":true,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=%2Fwp%2Fv2%2Fepkb_post_type_1_tag&post=20941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}