Citizen Systems CT-S4000DC user manual Cleaning the Print Head, Self-printing

4.3 Cleaning the Print Head

1.Turn the printer power off.

2.Open the printer cover.

3.Wait several minutes. Wipe off any debris on the heating element of the head using a cotton swab soaked in ethyl alcohol.

Print (thermal) head

CAUTION!

The print head is hot immediately after printing. DO NOT touch it with your hand. DO NOT touch the heating element of the head with a bare hand or metal object either.

4.4 Self-printing

Insert paper into the printer. With the FEED button pressed and held, turn the printer power on, keep the FEED button held for about 1 second, and then release the FEED button. The printer starts self-printing. The printer prints model name, version, DIP switch setting, memory switch setting, and built-in fonts.

Firmw	are versi	on
Interface
Serial	communication		Memory
condition (Only serial
			switch
interface model)
			setting
Buffer size
DIP switch setting
(Only serial interface
model)

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