IBM 6400 series Maintenance Manual page 99

If the message appears, replace the CMX controller board. Record the
message and return it with defective CMX board.
122 PAPER NOT SCHEDULED
SEE USER'S GUIDE
1. The paper feed process is not scheduling on the CMX controller board, and the
printer cannot advance paper.
Cycle power. Run the print job again. If the message appears, download
the emulation software again.
2. Cycle power. Run the print job again.
If the message appears, replace the MPU cable assembly.
3. Power on the printer. Run the print job again.
If the message appears, replace the power supply board.
4. Power on the printer. Run the print job again.
If the message appears, replace the shuttle frame assembly.
5. Power on the printer. Run the print job again.
If the message appears, replace the CMX controller board. Record the
message and return it with defective CMX board.
123 PAPER BUSY TOO LONG
SEE USER'S GUIDE
1. Firmware error on the CMX controller board.
Cycle power. Run the print job again. If the message appears, download
the emulation software again.
2. Run the print job again.
If the message appears, power off the printer. Remove the paper guide
assembly or pedestal top cover. Make sure connectors P106 and P107
are fully seated on the CMX controller board.
3. Power on the printer. Run the print job again.
If the message appears, replace the shuttle frame assembly.
4. Power on the printer. Run the print job again.
If the message appears, power off the printer. Make sure the MPU cable,
the hammer bank logic cable, and the hammer bank power cable are
Troubleshooting 99