{"id":26412,"date":"2025-06-11T14:21:39","date_gmt":"2025-06-11T14:21:39","guid":{"rendered":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/?post_type=epkb_post_type_1&#038;p=26412"},"modified":"2025-06-11T14:21:44","modified_gmt":"2025-06-11T14:21:44","slug":"c8402-c4751i","status":"publish","type":"epkb_post_type_1","link":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/?epkb_post_type_1=c8402-c4751i","title":{"rendered":"C8402 (C4751i)"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Contents<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Trouble type<\/td><td>C8402: Multi feed detection board failure (When UK-P19 is installed)<\/td><\/tr><tr><td>Rank<\/td><td>C<\/td><\/tr><tr><td>Trouble detection condition<\/td><td>When the main power switch ON or when the original is being conveyed, the AD value there is no paper loaded state is out of the predetermined range.<\/td><\/tr><tr><td>Trouble isolation<\/td><td>DF<\/td><\/tr><tr><td>Relevant electrical parts<\/td><td>Multi feed detection board\/TX (MFDB\/TX)Multi feed detection board\/RX (MFDB\/RX)DF control board (DFCB)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Procedure<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Check the connector between MFDB\/TX CN111-relay CN114-DFCB CN1 for proper connection and correct as necessary.<\/li>\n\n\n\n<li>Check the connector between MFDB\/RX CN110-relay CN115-DFCB CN1 for proper connection and correct as necessary.<\/li>\n\n\n\n<li>MFDB\/TX operation check\n<ul class=\"wp-block-list\">\n<li>Control signal: DFCB CN1-6<\/li>\n\n\n\n<li>Location of electrical component: 13-X<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>MFDB\/RX operation check\n<ul class=\"wp-block-list\">\n<li>Control signal: DFCB CN1-3<\/li>\n\n\n\n<li>Location of electrical component: 12-X<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>MFDB\/TX ICP1 conduction check<\/li>\n\n\n\n<li><a href=\"https:\/\/wapps.mykonicaminolta.com\/msman\/m\/service\/bizhubC4751iService\/en-US\/7475962507.html\">Replace MFDB\/TX.<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/wapps.mykonicaminolta.com\/msman\/m\/service\/bizhubC4751iService\/en-US\/7475967371.html\">Replace MFDB\/RX.<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/wapps.mykonicaminolta.com\/msman\/m\/service\/bizhubC4751iService\/en-US\/7470459275.html\">Replace DFCB.<\/a><\/li>\n<\/ol>\n\n\n\n<p><a href=\"https:\/\/wapps.mykonicaminolta.com\/msman\/m\/service\/bizhubC4751iService\/en-US\/15399271179.html\">(Link to the Field Service Manual)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Contents Trouble type C8402: Multi feed detection board failure (When UK-P19 is installed) Rank C Trouble detection condition When the main power switch ON or when the original is being conveyed, the AD value there is no paper loaded state is out of the predetermined range. Trouble isolation DF Relevant electrical parts Multi feed detection &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/?epkb_post_type_1=c8402-c4751i\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;C8402 (C4751i)&#8221;<\/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":[1399],"epkb_post_type_1_tag":[],"class_list":["post-26412","epkb_post_type_1","type-epkb_post_type_1","status-publish","hentry","epkb_post_type_1_category-c8-4750i-4050i-trouble"],"_links":{"self":[{"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/epkb_post_type_1\/26412","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=26412"}],"version-history":[{"count":1,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/epkb_post_type_1\/26412\/revisions"}],"predecessor-version":[{"id":26413,"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=\/wp\/v2\/epkb_post_type_1\/26412\/revisions\/26413"}],"wp:attachment":[{"href":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26412"}],"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=26412"},{"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=26412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}