{"id":15362,"date":"2019-10-07T13:42:22","date_gmt":"2019-10-07T13:42:22","guid":{"rendered":"http:\/\/localhost\/bizhubtroubleshooter\/?post_type=epkb_post_type_1&p=15362"},"modified":"2023-12-18T19:10:35","modified_gmt":"2023-12-18T19:10:35","slug":"c9401-bizhub-c754-c654","status":"publish","type":"epkb_post_type_1","link":"https:\/\/apps.kmbizhubvcare.com\/bizhubtroubleshooter\/?epkb_post_type_1=c9401-bizhub-c754-c654","title":{"rendered":"C9401 (bizhub C754\/C654)"},"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

\n\nContents<\/p>\n\n\n\n
Trouble type<\/td>Exposure LED lighting failure \/ ROM contents error (MSC)<\/td><\/tr>
Trouble code<\/td>C9401<\/td><\/tr>
Rank<\/td>A<\/td><\/tr>
Detection timing<\/td>-The output from the CCD sensor is a predetermined value or less during CCD sensor gain adjustment.
-The wrong model of firmware is detected in the MFP board when the main power switch is turned ON.
-The machine type information (Machine, Type) registered to the machine differs from the actual machine type.<\/td><\/tr>
Trouble isolation<\/td>Scanner<\/td><\/tr>
Relevant electrical parts<\/td>-LED exposure unit (LA201)
-Flat cable (LED exposure unit)
-CCD board (CCDB)
-Scanner drive board (SCDB)
-MFP board (MFPB)<\/td><\/tr><\/tbody><\/table>\n\n\n\n

(2)Procedure<\/p>\n\n\n\n
Step<\/td>Action<\/td>Control signal<\/td>Location of electrical components<\/td><\/tr>
1<\/td>Check the machine type information registered and re-enter as necessary.For details the machine information, see J.2.4 Entering the machine type information<\/a>.<\/td>
<\/td>
<\/td><\/tr><\/thead>
2<\/td>Check the connection between SCDB and LA201, and correct if necessary.<\/td>–<\/td>–<\/td><\/tr>
3<\/td>Check the connection between SCDB and MFPB, and correct if necessary.<\/td>–<\/td>–<\/td><\/tr>
4<\/td>Check that the connection between CCDB and MFPB, and correct if necessary.<\/td>–<\/td>–<\/td><\/tr>
5<\/td>Replace the LED exposure unit<\/a> (Part# A161M31001Old or Part# A2X0M31000)<\/td>–<\/td>–<\/td><\/tr>
6<\/td>Replace CCDB (A2X0R70022Old or A2X0R72100)<\/td>–<\/td>–<\/td><\/tr>
7<\/td>SCDB F1 conduction check<\/td>–<\/td>–<\/td><\/tr>
8<\/td>Replace SCDB<\/a> (Part# A2X0H01A01Old or Part# A2X0H01A12)<\/td>–<\/td>–<\/td><\/tr>
9<\/td>Replace MFPB<\/a> (Part# A2XKH02004)<\/td>–<\/td>–<\/td><\/tr><\/tbody><\/table>\n\n\n\n