Service manual

Rev. 2.00
- 41 -
SRP-275
3-3-10 Printer Head Specification
Item Description Remark
Model N09-15KS
Type : Ballistic type (Free fight)
Number of wire : 9pins
Dot pitch : 0.352 (1/72”)
Specification
Dot wire diameter : 0.3mm (0.01”)
Resistance : 18Ω ± 1.5Ω (at 20℃)
Inductance : 4.2mH ± 10% open circuit (at 1000Hz, 1VRMS)
Temperature rate : 155℃
Solenoid coil
Insulation resistance : 20MΩ with 500V/DC
Type : Constant voltage
Voltage : 24VDC±5% (Normal) (At printer head)
Current : 1.3A
Driver circuit
Pulse : 330μsec (Head on time)
Platen Gap : 0.40 ~ 0.50mm
Max. frequency : 1500Hz
Performance
Forms capability : Original + 2 copies
Max. operating temp. : 90℃
Temperature
Max. transient temp. : 110℃ ,For 5 minutes (25% duty)
3-3-11 Printer Head Thermistor Specification
Item Description Remark
Type NTC, F-CHIP FF103J
Electronic
Characteristics
• Resistance R25: 10㏀ ± 5Ω (At 25℃)
• β Value : 3950K ± 2
Temperature strage
–30℃ ~ 125℃
Rx formula Exp( -4.864010225 + 4344.5751119/T - 13183560.21/T^3) T : Absolute temperature
3-3-12 PF(Paper Feed) Motor Specification
Item Description Remark
Model PM42L-048-YKG3 (MINEBEA ELECTRONICS Co.Ltd) NMB
Voltage 24VDC±10%
Current 500mA / Phase (Peak)
Resistance
7.4Ω ± 5% at 25℃
Step angle 7.5°
Pull out torque 800 PPS 590 g·cm