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SHEET
REVISION
NO.
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L
TM-U210 series
Specification
(STANDARD)
51 50
3) Errors that cannot be recovered
Table 3.5.3 Unrecoverable Errors
Error Description ERROR LED blinking pattern Recovery
R/W error in
memory
After R/W checking,
the printer does not
work correctly.
Impossible to
recover.
CPU execution
error
CPU executes
incorrect address.
A
pprox. 160 ms
Impossible to
recover.
High voltage
error
Power voltage is
extremely high.
Impossible to
recover.
Low voltage
error
Power voltage is
extremely low.
Impossible to
recover.
Print head
temperature
detection
circuit error
Abnormality in the
mechanism or circuit
connection. Or
abnormality in the
print head
temperature.
Approximately 2.56 s
Impossible to
recover.
NOTE: If an error that cannot be recovered occurs, turn off the power as soon as possible.
3.5.2 Operation when an error is detected
The printer executes the following operations when detecting an error:
<Serial interface model>
• Stops all mechanical operations.
• Sets the DTR signal to MARK.
• Blinks the ERROR LED
• Transmits XOFF if XON/XOFF control is selected.
<Parallel interface model>
• Stops all mechanical operations.
• Sets the Busy signal to HIGH.
• Blinks the ERROR LED.
• Sets the nFault signal to LOW.
3.5.3 Data reception error
If any of the following data reception errors occur during serial interface communication, the
printer prints “ ? ” or ignores the data, according to the setting of DIP switch 1-1.
• Parity error
• Framing error
• Overrun error