iDP3420/3421/3423 User’sMa nual
26 CITIZEN
8. INPUT BUFFER BACKUP FUNCTION
8.1 Buffer Size
Withthe DIP switch, you can set either 6 K bytes or 256 bytes.
DIPs witchsegment 1-8 ON →6K bytes
OFF →256bytes
8.2 InputB ufferBackup
Even ifthe poweris turned offor failsduring the printingprocess, the data in the input buffer will be saved.
If the power is turne d on again, the printer wi ll print a power failure mark, "== POWER DOWN==," in red
and reprints the data from the beginning of the line where it lef t off.
8.3 Clearingthe Input Buffer
When you want to clear the data in the inputb uffer,turn on the power, holding down the LF switch. A
buzzerwill sound to informyou that the input bufferhas been cleared. Holddown the LFswitch until the
buzzer sounds.
If the printer prints the data erroneousl yat po wer-on, clear the input buffer as described above, and
then, re-input the data.