{"id":10160,"date":"2019-07-08T18:30:13","date_gmt":"2019-07-08T18:30:13","guid":{"rendered":"http:\/\/localhost\/bizhubtroubleshooter\/?post_type=epkb_post_type_1&p=10160"},"modified":"2023-12-21T15:22:14","modified_gmt":"2023-12-21T15:22:14","slug":"c2557-bizhub-554e-454e-2","status":"publish","type":"epkb_post_type_1","link":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/?epkb_post_type_1=c2557-bizhub-554e-454e-2","title":{"rendered":"C2557 (bizhub 554e\/454e)"},"content":{"rendered":"\n

Contents <\/p>\n\n\n\n
\nTrouble type<\/td>\nAbnormally low toner density detected black TCR \nsensor<\/td><\/tr>
\nTrouble code<\/td>\nC2557<\/td><\/tr>
\nRank<\/td>\nB<\/td><\/tr>
\nDetection timing<\/td>\nWhen sampling data is determined in TC ratio \ncalculation control, TCR sensor output is higher than a predetermined value for \na predetermined number of times in a row even though there is toner in the sub \nhopper<\/td><\/tr>
\nTrouble isolation<\/td>\n–<\/td><\/tr>
\nRelevant electrical parts<\/td>\u2022 Developing unit
\u2022 Toner cartridge
\u2022 Toner empty switch\/K (PS31)
\u2022 Toner bottle motor (M10)
\u2022 Toner supply motor\/K (M6)
\u2022 Front side board (FRB)
\u2022 Printer control board (PRCB) <\/td><\/tr><\/tbody><\/table>\n\n\n\n

\n \n(2)Procedure\n\n\n\n\n<\/p>\n\n\n\n
\nStep<\/td>\nAction<\/td>\nControl signal<\/td>\nLocation of electrical \ncomponents<\/td><\/tr><\/thead>
\n1<\/td>\nPerform image troubleshooting procedure if image \ndensity is low.<\/td>\n–<\/td>\n–<\/td><\/tr>
\n2<\/td>\nReinstall developing unit<\/td>\n–<\/td>\n–<\/td><\/tr>
\n3<\/td>\nReinstall toner cartridge<\/td>\n–<\/td>\n–<\/td><\/tr>
\n4<\/td>\nCheck the connector between developing unit-FRB CN13 \nfor proper connection and correct as necessary.<\/td>\n–<\/td>\n–<\/td><\/tr>
\n5<\/td>\nCheck the connector between FRB CN1, CN3-PRCB CN7, \nCN9 for proper connection and correct as necessary.<\/td>\n–<\/td>\n–<\/td><\/tr>
\n6<\/td>\nM10 operation check<\/td>\nPRCB CN14-1 to 4<\/td>\n17-C<\/td><\/tr>
\n7<\/td>\nM6 operation check<\/td>\nPRCB CN14-5 to 8<\/td>\n17-C<\/td><\/tr>
\n8<\/td>\nIf the toner empty sensor and its surroundings \ninside the sub hopper are dirtied with toner, clean them.<\/td>\n–<\/td>\n–<\/td><\/tr>
\n9<\/td> Replace the developing unit<\/a>Developer 554e\/454e (Part# A2XN03D)<\/td>\n–<\/td>\n–<\/td><\/tr>
\n10<\/td> Replace FRB<\/a>FRB (Part# A61FH00500)<\/td>\n–<\/td>\n–<\/td><\/tr>
\n11<\/td> Replace PRCB<\/a>PRCB (Part# 554e A61DH00101 454e A61EH00101)<\/td>\n–<\/td>\n–<\/td><\/tr><\/tbody><\/table>\n\n\n\n