Rev. 3.02 - 53 -
SRP-270
8-1-8 Electrical specifications
8-1-8-1 The explanations of the circuit operations
1) Head Carriage Step Motor
- It rotates and moves the Dot Head by using the several gears and synchronous belt
- Print Speed : 4.6 Line/Sec
- This step motor is control by constant current method.
So, current flows two red line of step motor is Max.560㎃
- This step motor is control by SMA7029M (Recommended)
2) Paper Feed Step Motor
- It is used when the paper is fed.
- The characteristics of step motor is as same as head carriage step motor
3) Home Sensor
- It detects the head position
- It decides the start point of printing
4) Solenoid
- It plays part in exchanging printing color (red → black)
5) Head
-It plays part in printing a character (Axiohn Co.)
8-1-8-2 Circuit Block Diagram
8-1-9 Mechanisms specifications
This printer consists of 5 mechanisms;
Head feeding Mechanism. Printing Mechanism. Paper Feeding Mechanism. Detector Mechanism, Ribbon
Mechanism. How is the external view of SMP-710/710N Impact dot matrix printer as shown. For details on the
operating principles and handling of each of the mechanisms, refer to "Principle of Movement" in section 8-1-
10 and "Handling, Maintenance and Repair" in 8-2.