Service manual

Rev. 1.04
- 25 -
EM 220
Mobile Printer Service Manual
3-2-3 Other Component Specifications
Item Description
Heat element structure 2 heaters/dot
Number of heat elements 384 dots
Heat element pitch 8.0 dots/mm (0.125 mm pitch)
Print width 48 ± 0.2 mm
TPH
Average resistance value (R
ave
) 176 ± 4 %
Voltage 5.0 VDC ± 10%
Current 420 mA (Per phase)
Phase 4 Phase
Exciting method 2-2 Phase (Bipolar – Constant A)
Exciting mode Bipolar
Step angle
18° (2-2 Phase)
Motor
Rotation
CW/CCW (Bi-direction)
Inductance 80 mH ± 30 %
3 Track MSR head
DC resistance 180  ± 25 %
Bluetooth Specification Version 2.0 +EDR
Frequency 2402 ~ 2480 MHz
Modulation
1M = GFSK
2M = ∏/4-DQPSK
3M = 8DPSK
Transmission
GFSK = 721 kbps
∏/4-DQPSK = 1448.5 kbps
8DPSK = 2178.1 kbps
Receive Sensitivity . -80 dBm
Maximum Output Power +2 dBm
Operating Voltage 2.7 ~ 3.6 V
Current Consumption Maximum 39.1mA
Operating Temperature -30 ~ +70 ℃
Antenna Impedance 50
Flash Memory 8M bit
Bluetooth
module
Package Size 11 x 11 x 1.6 mm