IBM 6400-I15 Maintenance Manual - Page 58

a. Recoverable unit check conditions are errors detected in the electromechanical print mechanism that may be temporary and correctable by cycling power. The printer tries a number of times to correct the condition before posting the message to the operator panel. The first thing to do in such cases is to power the printer off, wait 15 seconds, then power the printer back on. If the message reappears, classify the check condition unrecoverable. b. Unrecoverable unit check conditions are "hard" failures such as overcurrent, component failure, or microcode failures that prevent printing until the conditions are corrected. Unrecoverable conditions require that the printer be powered off and the condition corrected before powering the printer back on. Clearing Error Messages Refer to the Message List below, which lists the display messages numerically and alphabetically and directs you to a troubleshooting procedure. After correcting an error, press the Stop key to clear the message and return the printer to the NOT READY state. Press Start to resume printing. (If an error is not cleared, the printer will try to print again but will display another error message until the error is cleared.) Table 2. Message List Operator Panel Message Troubleshooting Procedure 001 END OF FORMS LOAD FORMS 002 FORMS JAMMED CLEAR JAM AND RELOAD FORMS 003 FORMS EJECTED PRESS EJECT/RESTORE 004 VIEW FORMS PRESS VIEW KEY 006 HOST SYSTEM REQUEST ATTENTION 007 FM HEADER ERROR Page 70 Page 70 Page 72 Page 72 Page 72 Page 72 58 Troubleshooting