Phaser 6121MFP Service Manual 3-59
Error Messages and Codes
Jam at Transfer
Detection of misfeed at 2nd transfer section For misfeed detection, the 
Registration Sensor (PS2) is unblocked after a specified period of time. In some 
cases, the 2nd Image Retraction Position Sensor (PS3) is not blocked by the paper 
that has moved past the position at which the sensor is blocked.
Detection of media left in 2nd transfer section For detection of paper, the 
Registration Sensor (PS2) is blocked when the power switch is turned ON, a cover is 
opened and closed, or a misfeed or malfunction is reset. In some cases, the2nd 
Image Retraction Position Sensor (PS3) is blocked when the power switch is turned 
ON, a cover is opened and closed, or a misfeed or malfunction is reset.
Applicable Error Code
• Jam at Transfer
Open top cover and
remove Imaging Unit
clear jammed paper
close top cover
Initial Actions
Follow the directions in “Initial Actions for Jam Errors” on page 3-56.
3 Check for +5 V at P/J12-6. 
Is the voltage present?
Go to step 4. Replace the Paper 
Path Guide 
Assembly 
page 8-98. If the 
problem persists, 
go to step 4.
4 Check for +24 V at P/J10-2.
Is the voltage present?
Go to step 5. Replace the 
solenoid 
(page 8-100). If 
the problem 
persists, go to step 
5.
5 Replace the Engine Control 
Board (page 8-59).
Complete.
Troubleshooting Procedure Table (continued)
Step Action and Questions Yes No