IBM 6400 series Maintenance Manual page 97

If the message appears, replace the CMX controller board. Record the
message and return it with defective CMX board.
114 ILLEGAL OPERAND ACCESS
SEE USER'S GUIDE
1. Illegal Operand Accessed. Firmware error on the CMX controller board.
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 CMX controller board. Record the
message and return it with defective CMX board.
115 ILLEGAL INSTRUCTION ACCESS
SEE USER'S GUIDE
1. Illegal Instruction Accessed. Firmware error on the CMX controller board.
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 CMX controller board. Record the
message and return it with defective CMX board.
116 ILLEGAL EXTERNAL BUS ACCESS
SEE USER'S GUIDE
1. Illegal External Bus Accessed. Firmware error on the CMX controller board.
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 CMX controller board. Record the
message and return it with defective CMX board.
117 A TO D OVERRUN
SEE USER'S GUIDE
1. The analog-to-digital converter on the CMX controller board has overflowed.
Cycle power. Run the print job again. If the message appears, download
the emulation software again.
2. Cycle power. Run the print job again.
Troubleshooting 97