{"id":26257,"date":"2025-06-10T14:06:34","date_gmt":"2025-06-10T14:06:34","guid":{"rendered":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/?post_type=epkb_post_type_1&p=26257"},"modified":"2025-06-10T14:06:39","modified_gmt":"2025-06-10T14:06:39","slug":"c2552-c2554-c2556-c2558-c4651i","status":"publish","type":"epkb_post_type_1","link":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/?epkb_post_type_1=c2552-c2554-c2556-c2558-c4651i","title":{"rendered":"C2552, C2554, C2556, C2558 (C4651i)"},"content":{"rendered":"\n

Contents<\/h2>\n\n\n\n
Trouble type<\/td>C2552: Abnormally high toner density detected cyan TCR sensorC2554: Abnormally high toner density detected magenta TCR sensorC2556: Abnormally high toner density detected yellow TCR sensorC2558: Abnormally high toner density detected black TCR sensor<\/td><\/tr>
Rank<\/td>B<\/td><\/tr>
Trouble detection condition<\/td>TC ratio in the imaging unit, which is determined by toner replenishing amount control mechanism, is a predetermined value or more for a given number of times consecutively.<\/td><\/tr>
Trouble isolation<\/td>–<\/td><\/tr>
Relevant electrical parts<\/td>Imaging unit\/C,M,Y,KCPU board (CPUB)Base board (BASEB)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Procedure<\/h2>\n\n\n\n
    \n
  1. Reinstall the imaging unit.<\/li>\n\n\n\n
  2. Check the connector between the imaging unit\/C-relay CN5-BASEB CN14E for proper connection and correct as necessary. (C2552)<\/li>\n\n\n\n
  3. Check the connector between the imaging unit\/M-relay CN8-BASEB CN14E for proper connection and correct as necessary. (C2554)<\/li>\n\n\n\n
  4. Check the connector between the imaging unit\/Y-relay CN7-BASEB CN14E for proper connection and correct as necessary. (C2556)<\/li>\n\n\n\n
  5. Check the connector between the imaging unit\/K-relay CN6-BASEB CN14E for proper connection and correct as necessary. (C2558)<\/li>\n\n\n\n
  6. Check CPUB for proper installation and correct as necessary.<\/li>\n\n\n\n
  7. Replace the corresponding imaging unit.<\/a><\/li>\n\n\n\n
  8. Replace CPUB.<\/a><\/li>\n\n\n\n
  9. Replace BASEB.<\/a><\/li>\n<\/ol>\n\n\n\n

    (Link to the Field Service Manual)<\/a><\/p>\n\n\n\n

    <\/p>\n","protected":false},"excerpt":{"rendered":"

    Contents Trouble type C2552: Abnormally high toner density detected cyan TCR sensorC2554: Abnormally high toner density detected magenta TCR sensorC2556: Abnormally high toner density detected yellow TCR sensorC2558: Abnormally high toner density detected black TCR sensor Rank B Trouble detection condition TC ratio in the imaging unit, which is determined by toner replenishing amount control … <\/p>\n

    Continue reading “C2552, C2554, C2556, C2558 (C4651i)”<\/span><\/a><\/p>\n","protected":false},"author":227,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"epkb_post_type_1_category":[1393],"epkb_post_type_1_tag":[],"class_list":["post-26257","epkb_post_type_1","type-epkb_post_type_1","status-publish","hentry","epkb_post_type_1_category-c2-4750i-4050i-trouble"],"_links":{"self":[{"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/epkb_post_type_1\/26257","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\/227"}],"replies":[{"embeddable":true,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=26257"}],"version-history":[{"count":1,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/epkb_post_type_1\/26257\/revisions"}],"predecessor-version":[{"id":26258,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/epkb_post_type_1\/26257\/revisions\/26258"}],"wp:attachment":[{"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26257"}],"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=26257"},{"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=26257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}