IBM 6400 Series, Maintenance Information Manual

Page: 72 / 422

72
Chapter 5
Troubleshooting Display Messages
025 SERIAL FRAMING
ERROR
VERIFY
CONFIGURATION The printed output
may contain random !
(exclamation point)
characters. 1. Make a configuration printout. Verify that
the printer matches host configuration
settings for Data Protocol, Baud Rate,
Data Bits, Stop Bits, Parity, Data
Terminal Ready, and Request to Send.
Set printer serial interface parameters to
match those of the host.
2. Send a print job to the printer. If the
message appears, go to
Communications Failures, page 131.
026 HEX DUMP MODE Printer attach status
message. No action required.
027
COMMUNICATIONS
CHECK
CALL SYSTEM
OPERATOR Enable poll timeout.
The printer was not
enabled for one
minute over a coax
interface Power off the printer. Disconnect the AC
power cord from the printer. Check data cable
connection and host system. (Refer to line
problem determination procedures, as
recommended by the host system.)
028
COMMUNICATIONS
CHECK
CALL SYSTEM
OPERATOR Poll timeout error.
The printer was not
polled for one minute
over a coax interface. Power off the printer. Disconnect the AC
power cord from the printer. Check data cable
connection and host system. (Refer to line
problem determination procedures, as
recommended by the host system.)
029 8344 DIAGNOSTIC
TEST FAILED Link-level code test
detects a hardware
failure on the coax/
twinax expansion
board. This message
can also occur if the
software in flash
memory is 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 coax/
twinax expansion board. Record the
message and return it with defective
board.
Table 4. Message List
Operator Panel
Message
Explanation Corrective Action