IBM Infoprint 6500-v05 Maintenance Manual page 52

Chapter 1
Troubleshooting Display Messages
Operator Panel Message
019 STACKER FAULT
CHECK STACKER (continued)
021 BUFFER OVERRUN
VERIFY CONFIGURATION
022 UNIT ADDRESS INVALID
CHECK PRINTER ADDRESS
Table 3. Message List
Explanation
The print buffer has overflowed on
a serial interface. The printed
output may contain random *
(asterisk) characters.
Poll timeout on the twinax
interface indicating the unit
address is not recognized by the
printer.
Corrective Action
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.
11. Download and install the latest code from IBM First (page 231).
12. Power on the printer in download mode and load flash memory
(page 238).
13. If you encounter the failure after replacing the controller board,
reinstall the original controller board and contact your DDS and
Second Level Support.
14. If the problem reappears, replace the stacker motors.
1. Make a configuration printout. Verify that the printer matches the
host serial interface configuration settings for Data Protocol, Baud
Rate, Data Bits, Stop Bits, Parity, Data Terminal Ready, and
Request to Send.
2. Set printer serial interface parameters to match those of the host.
3. Send a print job to the printer. If the message appears, go to
Communications Failures, page 211.
Have the system administrator make sure the printer address is
correct.
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