256
Chapter 7 Diagnosing Problems
426 BC READ ERR
See User Manual
Yes Bar code read error: The
printer does not detect
the presence of the
ribbon bar code sensor.
1. Power down the printer.
2. Remove the ribbon and
wipe the two lenses of the
ribbon bar code sensor with
a lint-free cloth or cotton
swab.
3. Install the ribbon and power
on the printer. If the
message reappears,
replace the ribbon.
733 DP FIFO Busy* Yes There is a timing problem
in the Engine Controller
firmware.
1. Cycle power. Run the print
job again. If the message
reappears, download the
emulation software again.
2. Cycle power. Run the print
job again. If the message
reappears, contact your
authorized service
representative.
1
A TO D OVERUN* No Analog to Digital
Overrun. The analog-to-
digital converter
overflowed.
Contact your authorized service
representative.
1
ACCESS NULL PTR* No Access Null Pointer: The
processor tried to access
a pointer that contains
nothing (null).
Contact your authorized service
representative.
1
ACTIVATE LOST No The printer detects a
twinax protocol
communication error and
reports the error.
Contact your authorized service
representative.
1
B00 STATUS: SDRAM
DETECTION 166MHZ
No Status message: the
printer has begun its
boot-up routines and is
checking for the
presence of SDRAM.
No action required.
B01 STATUS: 8245
SDRAM TEST 32MB
No Status message: printer
boot-up routines are
testing SDRAM.
No action required.
B10 ERROR: NO
DRAM DETECTED*
No SDRAM DIMM may not
be properly installed.
Boot-up routines did not
detect the presence of
the SDRAM DIMM.
Cycle power to see if the message
clears, if not, contact your
authorized service representative.
1
Table 15. LCD Message Troubleshooting Table
Displayed Message
Can User
Correct?
Explanation Solution
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