11
receive data, when the signal is
‘SPACE’, it means printer is
ready to receive data
5
GND
——
GND
3.3.5 Cash Drawer Interface
PIN NO
Signal
Directi
on
1
Structure
ground
——
2
Cash drawer
driver signal
outpu
t
3
Cash drawer
on/off status
signal
input
4
+12V DC
——
5
NC
——
6
Signal ground
——
Fig 3-3-5 Cash drawer interface
3.4 Buzzer
There is also a buzzer to indicate various status of the printer. The meanings
are as below:
One low one high: power on;
Circulation continuous two lows: printer at error status
3.5 Indicator light
SP-TL21 has two indicator lights, the green one[ONLINE] is power light, the
red one[ERROR] is status light.
The green indicator light[ONLINE] on when the printer on. The [ONLINE]light
will flicker when the printer turn on the auto peel mode and paper left on the
paper-taking position.
The red light[ERROR]off when the printer work properly, the meaning of red
light are as below:
False
Status
Illustration
Paper out
On
Change
paper
or
use the proper label
paper
Paper
cover open
Flicker
twice
and off for 1s
Close the paper cover
Over-heat
printing
head
Flicker
once
and off for 1s
Print after for a while
