EPSON Stylus PHOTO 810/820 Revision A
Troubleshooting Troubleshooting with LED Error Indications and Status Monitor 3 Message 54
Paper jam error On On
This error is detected when ;
1) the end of a paper is not correctly detected
     with the HP/PE sensor in the paper feeding
     sequence.
2) the HP/PE sensor cannot detect that the CR
     unit moves outside the home position in the
     CR home position detection sequence.
Paper out error On On
This error is detected when the top of a paper is 
not detected with the HP/PE sensor in the paper 
loading sequence.
Table 3-3.  Error indication and status monitor 3
Printer status
Indicators
Status monitor 3 message Condition for error detection
Power Error