Printhead; Buzzer Function - Epson LX-300+ Service Manual

LX-300+/1170

2.2.1 Printhead

The table below shows the printhead specifications.
Table 2-1. Printhead Specifications
Item
Number of wires
Diameter of wire
Wire configuration
Direct current coil resistance
Head drive method
Head drive voltage
Peak current
Head drive frequency
Head life
Environmental condition
Operating Principles
Specification
9
φ0.29 mm
See Figure 2-3 "Wire Configuration".
Note: The figure is seen from the back of the head
facing printing side.
33.3 ±3.3 Ω (25°C)
Rated voltage drive
35+2.1/-3.5 V
• Normal: 0.75 A (Standard)
• Copy: 0.85 A (Standard)
1.0 A (Maximum)
• Normal: 1350Hz or less
• Copy: 1350Hz or less
• Black ribbon: 0.2 billion stroke/ wire or more
• Color ribbon: 0.1 billion stroke/ wire or more
• Temperature: 5 to 55°C
• Humidity: 10 to 85%

2.2.1.1 Buzzer Function

This printhead also works as a buzzer. The table below is buzzer specification.
Table 2-2. Buzzer Function -- Specification
Head voltage
Drive frequency
Printer Mechanism
Figure 2-3. Wire Configuration
Item Specification
35 +2.1 / -3.5 V
2kHz, 1.5kHz
Revision C
47