Epson LX-850 manuali

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Epson LX-850 Specifiche (176 pagine)


Marchio: Epson | Categoria: Stampa e scansione | Dimensione: 4.09 MB |

 

Indice

LX-810/850

1

PRECAUTIONS

3

REVISION TABLE

5

TABLE OF CONTENTS

6

CHAPTER 1

7

GENERAL DESCRIPTION

7

FEATURES

9

Hardware Specifications

11

Si_k&lL

12

Figure 1

14

Cut-Sheet Printing Area

14

3mm min

16

Printing Columns

19

See Table 1-10

19

1.3 INTERFACE OVERVIEW

20

1.4.1 DIP Switch Settings

23

SELECTYPE

24

FUNCTION

24

TEAR-OFF

25

FUNCTION

25

1.8 OPERATING INSTRUCTIONS

26

1.8.3 Buzzer Operation

28

Beeps indefinitely until

28

1.6 MAIN COMPONENTS

30

Control Panel

31

1.6.5 Housing

33

1-15. Housing

33

CHAPTER 2

34

PRINCIPLES OF OPERATION

34

2.1 OVERVIEW

37

Optional

38

Interface

38

&&

40

<o—————u

41

‘Usir+km+=l

44

● EEPROM

45

● Power supply circuit

45

2.2.1.1 TA Filter Unit

47

Figure 2-13

48

12V DC Power Supply Circuit

48

Frb’+a*b

49

Feedback Circuit

51

Im_IL’’’’ompara’or

53

UPC494C

54

2.2.2 Reset Circuit

56

Power-off Reset

57

: Driving Pulley

58

PD78 10HG

59

Figure 2-27. SLA7020M Circuit

61

““’’’-r’”’

63

Table 2-3. Reference Voltage

64

ON then

66

ON to IOFF

66

ON increases

67

D voltage reaches the

67

D voltage

67

C Phase D

68

-f-e’’Jw-JL&aau

69

--JvLODJm-J_

70

@~{’aperTe~~~~~~~con.ear

71

~>TractOrReductiOn

72

Printhead

75

This section describes the

75

operation

75

$:q:&J1-n—rL

78

Figure 2-48

79

2.2.6 Host Interface

80

2.2.8 Ribbon-feed Mechanism

82

CHAPTER 3

83

OPTIONAL EQUIPMENT

83

Cat. No

85

X-ON/X -OFF

86

3.2 CUT SHEET FEEDER C80612*

88

(0.0039 inches)

89

8.5mm(0..33”)

90

Cut Sheet Feeder Mode

92

E#j’::::d/w

93

‘. . .

94

E-ring (6)

95

Figure 3-7. E-Ring Removal

96

PULL TRACTOR

100

(@-ring’”

102

Marks to ‘be Matched

103

CHAPTER 4

104

DISASSEMBLY, ASSEMBLY, AND

104

ADJUSTMENT

104

LIST OF FIGURES

104

LIST OF TABLES

106

JiMwf!3a

108

DISASSEMBLY AND REASSEMBLY

109

Casing Removal -1

111

4.2.2.2

113

3. Remove

115

(M3 X 6)

115

Removal of Printer Mechanism

116

Remove the GND spring

117

PaDer Guide

118

Frame (R)

122

Flat Spring

124

Shaft Ground

125

NOTES FOR REASSEMBLY:

129

Home Position Sensor

130

NOTES FOR REASSEMBLY

132

CHAPTER 5

135

TROUBLESHOOTING

135

5.1 GENERAL

136

UNIT REPLACEMENT

136

(5) Abnormal Control

143

UNIT REPAIR

145

Check point

148

Solution

148

Problem Symptom

150

Symptom Cause

152

Check point Solution

152

Printer Mechanism Repair

153

● Replace the

154

6.1 PREVENTIVE MAINTENANCE

157

APPENDIX

160

/APD7810HG

163

<,”>

165

(AD7-0)

166

A.1.2 E05A30 (3B)

168

SRAM (3D)

170

A.1.5 SLA7020M (1A)

172

A.1.6 pPC494C (3A)

173

A.2 EXPLODED DIAGRAMS AND

174

SCHEMATICS

174





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