Printer Operation When An Error Occurs; Data Receive Error - Epson TM-U925 Manual

3) Errors that cannot be recovered
Error Description
R/W error in After R/W checking, the
memory or printer does not work
gate array correctly.
High voltage The power supply voltage
error is extremely high. (*1)
Low voltage The power supply voltage
error is extremely low. (*1)
CPU execution The CPU executes an
error incorrect address.
Drive circuit Error occurs in the
error mechanism drive circuit.
Thermistor There is an abnormality
error in detecting the print
head themperature or the
print head rank cannot be
read correctly.
(*1) Refer to Appendix A.
NOTE: When any error shown above occurs, turn off the power as soon as possible.

3.8.2 Printer operation when an error occurs

The printer executes the following operations when detecting an error:
· Stops all printer operations.
· Goes off-line (when DIP switch 2-1 is OFF).
· Flashes the ERROR LED.

3.8.3 Data receive error

If one of the following errors occurs during serial interface communication, the printer prints "?" or
ignores the data, depending on the setting of DIP switch 1-7.
· Parity error
· Framing error
· Overrun error
EPSON
Table 3.8.3 Unrecoverable Errors
ERROR LED blinking pattern
TITLE
TM-U925
Specification
(STANDARD)
Approx. 160msec
SHEET
REVISION
A
Recovery
Impossible to
recover.
Impossible to
recover.
Impossible to
recover.
Impossible to
recover.
Impossible to
recover.
Impossible to
recover.
NO.
NEXT SHEET
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