User Manual
15 
1 POWER Switch 
The POWER Switch turns the power on or off. 
The POWER LED lights when turning on the 
power. To turn off the power, hold down the 
switch for longer than 1 second. 
2 FEED Switch 
The FEED Switch operates paper feed. When 
holding down the switch for a few seconds, the 
printer feeds the thermal paper continuously for 
the period of held. 
In the mark mode, form feed (paper feed until 
mark detection) is performed by pressing this 
switch once. 
3 ERROR LED 
The ERROR LED lights when something is 
wrong with the printer. For more details, see "7 
LED INDICATION OF PRINTER". 
4 POWER LED 
The POWER LED lights when turning on the 
power. For more details, see "7 LED 
INDICATION OF PRINTER". 
5 WIRELESS LED 
The WIRELESS LED shows the connection 
status of wireless communication (Bluetooth / 
Wireless LAN). For more details, see "7 LED 
INDICATION OF PRINTER". 
6 Power connector 
The connector is for charging with AC adapter or 
car charger. 
7 USB connector 
The connector is for using USB interface. 
8 Paper cover open button 
The button is for opening the paper cover. 
9 Paper cover 
The platen is released from the thermal paper 
when opening this cover. Open this cover when 
replacing the thermal paper or cleaning the 
thermal head. 
10 Paper outlet 
Thermal paper is ejected from here. Two paper 
cutters are installed: one is on the printer side, 
and the other is on the paper cover side (10a, 
10b). 
Be careful not to touch these paper cutters. 
11 Paper holder 
The paper holder holds the thermal paper. 
12 Thermal head   
The thermal head prints data on the thermal 
paper. NEVER touch the thermal head with 
hands immediately after printing because it may 
get hot. 
13 Lock arm 
The arm moves when opening and closing the 
paper cover. DO NOT touch because the tip is 
sharp. 
14 Platen 
The platen brings the thermal paper into contact 
with the thermal head. The platen rotates to feed 
the paper. 
15 Paper sensor 
The sensor detects thermal paper presence or 
mark. 
16 N mark (Only for MP-B30-B02JK1) 
This mark indicates the position of the NFC tag. 
By bringing an NFC-enabled terminal to this mark 
closer, it is easy to connect the terminal and the 
printer. 
17 Battery pack compartment 
The battery pack is installed here. 
18 Belt clip installation hole 
The belt clip or shoulder strap is installed here for 
carrying the printer. 
19 Charging terminal 
The terminal is for charging the battery pack by 
using the optional cradle. DO NOT touch this 
charging terminal. 










