Epson TM-U950P Specifications - Page 68

3) Errors that are impossible to recover Error Description Table 3.8.3 Unrecoverable Errors ERROR LED blinking pattern Approx. 160msec R/W error in memory or gate array High voltage error After R/W checking, the printer does not work correctly. The power supply voltage is extremely high. Low voltage error The power supply voltage is extremely low. (*) CPU execution error The CPU executes an incorrect address. Drive circuit error Thermistor error There is an abnormality in a mechanism drive circuit. There is an abnormality in the print head themperature. Recovery Impossible to recover. Impossible to recover. Impossible to recover. Impossible to recover. Impossible to recover. Impossible to recover. (*) 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. Blinks 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 TITLE EPSON TM-U950/U950P Specification (STANDARD) SHEET REVISION NO. NEXT A 4442 SHEET 413