Citizen CL-E720DT Technical Manual page 122

Chapter 4 Troubleshooting
4-1. Error Message and Corrective Actions
Causes/Corrective Actions
Head resistance abnormality - Resistance is small
• Defective thermal element(s).
Print quality will degrade.
Serial communication error
• Receiving buffer overrun error
Serial communication error
• Parity error
Serial communication error
• Framing error
System error
• Power to the "SA Head" and "SA PF Motor" is shut off.
(To resume, turn the power OFF and then ON.)
Auto-cutter abnormality (foreign object etc.)
(Option)
• Jamming, etc.
CL-E720DT
ERROR LED
Flashing in red
Flashing in red
Flashing in red
Flashing in red
Flashing in red
Flashing in red
4-4
LCD
Alarm
Head Check
Error
Serial Over Run
Error
Serial Parity
Error
Serial Framing
Error
System Fail
Error
Cutter Fail