SC No.  Level  Error Name/Error Condition/Major Cause/Solution 
141-00  B  Black level detection error 
The black level cannot be adjusted within the specified value. 
  CIS defective 
  MPU defective 
  Harness defective 
1.  Reconnect the harness of the CIS. 
2.  Replace the following parts. 
  Replace the CIS 
  Replace the MPU. 
  Replace the harness of the CIS. 
 
SC No.  Level  Error Name/Error Condition/Major Cause/Solution 
142-00  B  White level detection error 
The white level cannot be adjusted within the specified value. 
  CIS defective 
  MPU defective 
  Harness defective 
  Condensation in scanner unit 
  CIS dirty or positioned incorrectly 
  White plate dirty or positioned incorrectly 
1.  Perform the following operations. 
  Reconnect the harness of the CIS. 
  Reattach or clean the CIS. 
  Reattach or clean the white plate. 
2.  Replace the following parts. 
  Replace the CIS 
  Replace the MPU. 
  Replace the harness of the CIS.