IBM 6400 - Page 94

94
Chapter 5 Troubleshooting Display Messages
116 ILLEGAL
EXTERNAL BUS
ACCESS
SEE USER’S GUIDE
Illegal External Bus
Accessed. Firmware
error on the CMX
controller board.
1. 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
The analog-to-digital
converter on the CMX
controller board has
overflowed.
1. 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.
118 UNDEFINED
INTERRUPT
SEE USER’S GUIDE
Firmware error on the
CMX controller board.
1. 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.
119 TCB CORRUPTED
SEE USER’S GUIDE
Task Control Block on
the CMX controller
board has been
corrupted.
1. 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.
120 ACCESS NULL
POINTER
SEE USER’S GUIDE
The processor tried to
access a pointer that
contains nothing
(null).
1. 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.
121 PAPER NOT AT
SPEED
SEE USER’S GUIDE
Firmware error on the
CMX controller board.
1. 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.
Table 4. Message List
Operator Panel
Message
Explanation Corrective Action