请帮帮忙，施乐7855硒鼓盒r1错误
 

今天一开机就出现 硒鼓盒r1，代码391.921

黑色的鼓没装好，拔出来重新装一下

已经装了很多次，而且和其它鼓对换过，还是一样

391-921 Drum CRUM K Not In Position
BSD-ON: 9.4 Drum Life Control (C,K)
The Drum (K) CRUM is not in the proper position (loose CRUM).
NOTE:
When turning the power OFF, turn OFF the Power Switch first and then the Main Power Switch.
Cause/Action
1.Remove and reinstall the Drum (K).
2.Polish the connection terminals between the Drum (K) CRUM PWB and the Drum CRUM Coupler Assembly (K) CRUM with dry cloth. (When cleaning, do not use Drum cleaner, etc.)
3.Check the following:
•The connection between the MDM PWB P/J528 and the Drum CRUM Coupler Assembly (K) P/J115 for open circuit, short circuit, and poor contact
•The connection terminals between the Drum (K) CRUM PWB and the Drum CRUM Coupler Assembly (K) CRUM for damage and foreign substances
•The Drum (K) for improper installation
If no problems are found, replace the following parts in sequence:
•Drum (K) (PL 8.1)
•Drum CRUM Coupler Assembly (K) (PL 8.1)
•MDM PWB (7830/35) (PL 18.2A)
•MDM PWB (7845/55) (PL 18.2B)

或者是鼓和板子之间连接断开了。。。。。

接触芯片的小板子掉了？:bad_smile:

没有掉，就前一晚用完，第二天开机就显示这样错误。

不是说硒鼓上的，而是识别这块芯片上的那个。