LX-300+/1170
Revision C
Operating Principles
Printer Mechanism
50
CARRIAGE HOME POSITION (HP) DETECTOR
The table below is the HP detector specifications.
HP detector detects the signal right after when the CR motor switches the phase.
2.2.2.1 High speed skip method
At no-printing area, the carriage moves at high speed compared to the normal carriage
speed at printing. This is called carriage control.
2.2.3 Ribbon Mechanism
2.2.3.1 Ink Ribbon Shifting Mechanism
Ink ribbon shifting mechanism: CR motor drives timing belt and the timing belt driven
pulley drives the ribbon shifting gears.
2.2.3.2 Color Ribbon Driving Mechanism (Option)
Color ribbon driving is only avilable for LX-300+.
Color ribbon driving mechanism: shifts the color ribbon up and down to change the
color area of the ribbon to be printed.
Color ribbon mechanism consists of the color shift (CS) motor, CS cam, ribbon detector,
CS lever assembly and color cartridge holder. Color ribbon is installed on the color
cartridge holder.
When CS motor revolves, 1) the pinion revolves CS cam, 2) the CS lever assembly on the
CS cam shifts the color cartridge holder up and down and 3) drives ribbon up and down.
Table 2-5. HP detector Specifications
Item
Specification
Method
Mechanical contact method
Switching rate
0.6 to 1.0 mA, 5 VD±5%
Switching mode
• out of HP: close
• within HP: open
Table 2-6. CS Motor Specifications
Item
Specification
Motor type
2-phase/48-pole PM stepping motor
Coil resistance
150
Ω
±5% (25°C, per 1 phase)
Control method
uni-polar rated voltage drive
Phase drive
2-2 phase
Drive voltage
36.75 ± 1.75 VDC
Consuming current
• Operating, peak current: 245 mA
• Non-operating:
20 mA
Drive frequency
500 pps
Содержание LX-1170
Страница 1: ...EPSONLX 300 1170 9 pin Serial Impact Dot Matrix Printer SEDM997003 SERVICE MANUAL LX 300 LX 1170 ...
Страница 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 44: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 60: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 69: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 89: ...LX 300 1170 Revision C Disassembly and Assembly Disassembly and Assembly 89 ...
Страница 90: ...C H A P T E R 5 ADJUSTMENT ...
Страница 98: ...C H A P T E R 6 MAINTENANCE ...
Страница 103: ...C H A P T E R 1 9 7 APPENDIX ...
Страница 112: ...LX 300 1170 Revision C Appendix Component Layout 112 C294 MAIN B BOARD Figure 7 3 Component Layout C294 MAIN B Board ...
Страница 114: ...LX 300 1170 Revision C Appendix Component Layout 114 C294PNL BOARD Figure 7 6 Component Layout C294PNL ...
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