Epson LX-86TM Especificações descarregar pdf (Página 66)

REV.-A

2.4.7.3 Printhead Drive Circuit

Figures 2-32 and 2-33 show the

printhead drive circuit and the waveform of the drive voltage.

CN4

+24V

Solenoid

Coil

Q1-Q9

C3293

HDn

E05A03

R52

(3B)

R61

Fig. 2-32. Printhead Drive Circuit

s.,e.oid..rre.t~::::;:

Waveform

~A4:l-

Drive Transistor

Collector Voltage

Waveform

.=approx.

360Ps

Fig. 2-33.

B=approx.

40ps

C=approx. 1.11 ms

Solenoid Current and Drive

Voltage Waveforms

2.4.8 Print Timing Control

This section describes the print timing control for the carriage and printhead and the bidirectional logic

seeking function.

2.4.8.1 Print Timing Control for the Carriage and

Printhead

The phase switching of the carriage motor and the

printhead driving are controlled by the CPU, and

the relationship between the two is shown in Figure 2-34.

2-34

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 141 142

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Epson LX-86TM Especificações Página 66