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Chapter
7
Diagnosing Problems
Table 12. N7000 STD ASCII LCD Fault Messages Troubleshooting
Displayed Message
B50 STATUS: XX%
CLEAR FLASH
B51 STATUS: XX%
LOADING...
B53 ERROR: 12C NO
ARBITRATION
B54 ERROR: SDA
LINE STUCK LOW
B55 STATUS: SEND
PROGRAM TO EC
BUFFER OVERRUN
CLEAR PAPER JAM
CLEARING
PROGRAM FROM
FLASH
CLOSE PLATEN
COIL HOT
182
Can User
Explanation
Correct?
No
Emulation software
sucessfully loaded in
RAM. Old program being
deleted from flash
memory.
No
Status message: printer
boot-up routines are
loading printer system
software into flash
memory and SDRAM.
No
There is a problem on the
2
I
C bus which allows the
SDRAM DIMM to
communicate with the
GPIO interface.
No
The SDRAM or a PCI
card is shorting out the
serial data bus on the
controller board.
No
EC program downloaded
and being programed in
EC.
Yes
The print buffer has
overflowed on a serial
interface. The printed
output may contain
random * (asterisk)
characters. Make a
configuration printout.
Yes
No paper motion.
No
Status message:
emulation software
successfully loaded into
printer RAM and the
checksum matched. The
old program is now being
deleted from flash
memory.
Yes
The platen lever is open.
No
One or more hammer
coils are overheating.
Solution
No action is required.
No action required.
Cycle power to see if the message
clears, if not, contact your
authorized service representative.
Cycle power to see if the message
clears, if not, contact your
authorized service representative.
No action is required.
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. Set printer serial interface
parameters to match those of the
host.
Clear jam and reload paper. If this
message recurs, contact your
authorized service representative.
No action is required.
Close the platen lever.
Contact your authorized service
1
representative.
1
1
1
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