Service manual

2 Product Specifications
2-4 SAM4S ER-650 SERIES
2-3 Thermal Printer Specifications
2-3 A. Printer Specification
Item Description Remark
Model • STM-210
Print Method • Thermal Line Printing
Total number of dots • 384 Dots / I Line
Printing Format
Dot Pitch
• Vertical : 0.125 mm
• Horizontal : 0.125 mm
Printing Speed • 50 mm/s ( At 8.5V of Motor Terminal Voltage)
Printing Direction • Unidirection with friction feed
Feeding Method • Friction Feed
Minimum Feed Pitch • 0.0625 mm
Paper Feeding
Feeding Speed • 50 mm/s (At 8.5V of Motor Terminal Voltage)
Power Voltage • 8V / 8.5V (Recommend) Head/Motor
Power Supply Volt
Circuit input Voltage • 5V Head Control/Sensor
Heat Element Density • 8 Dots/mm (0.125 mm/Dot)
Total Head Elements • 384 Dots/Dot Line
Available Printing Width • 48 mm
Printer Head
Heat element typical Ω • 176 Ω±4%
Motor Paper Feed Motor • 4-Phase Bi-Polar Stepping Motor
Head Temperature • Thermister
Paper-End Sensor • Reflecting Photo Sensor
Sensor
Cover Open Sensor • Micro Switch
Life • 15,000,000 Lines
Reliability
MCBF • 37,000,000 Line
Dimension (mm)
• 82.5 (W) ×147.3 (D) ×101.4 (H)
Weight • Approx. 365 g
Table2-2 Thermal Printer Specifications