Display Messages
106
125 PAP FIFO UNDERFLOW *
SEE USERS MANUAL
Paper First In First Out Underflow.
Firmware error on the controller
board.
1. 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 and
unplug the printer. Remove the paper guide assembly or pedestal
top cover. Make sure connectors P106 and P107 are fully seated
on the controller board. Plug in the printer.
3. Check hammer phasing (page 381). Try using a lower phasing
value; sometimes this message indicates too high a hammer
phase value.
4. Run the print job again. If the message appears, power off and
unplug the printer. Make sure the MPU cable, the hammer bank
logic cable, and the hammer bank power cable are undamaged
and have good connections. Replace as needed. (Refer to the
Cable Shorts Test on page 254.)
5. Check the shuttle for shorts (page 252).
6. Plug in the printer and power it on. Run the print job again. If the
message appears, replace the shuttle frame assembly.
7. Plug in the printer and power it on. If the problem reappears, the
controller board or microcode is suspect. Do the following:
8. Save the printer configuration values. (Refer to the
User’s
Manual
.)
9. Clear NVRAM (page 237).
10. Download and install the latest code from IBM First (page 231).
11. Power on the printer in download mode and load flash memory
(page 238).
a. If you encounter loading problems, go to the appropriate error
code for resolution.
b. If you encounter the failure or message that brought you to
this procedure, replace the controller board (page 319). After
replacing the controller board, DO NOT make the printer
READY, but proceed immediately to the next step.
Table 3. Message List
Operator Panel Message Explanation Corrective Action
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