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1.3 SPECIFICATIONS
This chapter describes the specifications of the LX-800 printer.
●
General Specifications
Printing method:
Pin configuration:
Pin diameter:
Dot Pinch:
Printing direction:
Text mode:
Bit-image mode:
Dot matrix:
Character sets:
Fonts:
Printing speed:
Character size:
Column width:
Serial impact dot matrix
9 wires (see Figure 1-5)
0.29 mm
0.35 mm (1/72 inch)
#1
#2
#3
#4
#5
#6
#7
#8
#9
(
)
i
(
)
0.29mm
t
<
>
0.35mm (1 /72”)
t
( )
Fig. 1-5. Printhead Pin Configuration
Bi-directional with logic seeking
Uni-directional (left to right)
9 X 9 (Draft)
11 X 18
(NQL)
6 X 8 (Graphics)
96 ASCII characters
96 Italic characters
32 International characters
32 International Italic characters
32 Graphics characters
96 IBM Graphics characters
Draft,
NLQ-Roman,
Saris-serif
See Table 1-4
See Table 1-4
See Table 1-4
480 dots/line at 60 dots/inch (Bit-image)
1-6
—.—
- TECHNICAL MANUAL 1
- PRECAUTIONS 3
- REVISION SHEET 5
- TABLE OF CONTENTS 6
- CHAPTER 1 7
- GENERAL DESCRIPTION 7
- FEATURES 9
- 1.2 INTERFACE 11
- 1.3 SPECIFICATIONS 14
- 1.4 OPERATING CONTROLS 20
- Middle and 21
- 1.5 MAIN COMPONENTS 26
- CHAPTER 2 30
- OPERATING PRINCIPLES 30
- 2.1 GENERAL 33
- MODEL-3A1O PRINTER MECHANISM 34
- (MAIN BOARD) 34
- 2.3 POWER SUPPLY CIRCUIT 35
- 2.3.2 Regulator Circuit 37
- 2.4 CONTROL CIRCUIT 41
- (ControIl 46
- 1. Address latch 47
- -“’’’’’’’’’’’’’;’’’”:l 51
- *m(cN2pin’3) 54
- 2.4.6 Paper Feed Motor 59
- ~---vuvu 61
- 61
- EPSON LX-800 62
- 2.4.8 Print Timing Control 66
- 4,,1<,1 68
- 2.5.1 Sensor Mechanism 69
- Carriage Guide Shaft 70
- Paper Feed Motor 72
- Breaking 74
- CHAPTER 3 75
- OPTIONAL EQUIPMENT 75
- 3.1 GENERAL 76
- 3.2 OPTIONAL INTERFACES 76
- CHAPTER 4 77
- ISASSEMBLY, ASSEMBLY, AND 77
- ADJUSTMENT 77
- 4.2 DISASSEMBLY AND ASSEMBLY 82
- 4.2.2 Removal of Cases 83
- Flat Spring 92
- , Platen 92
- Platen Gear 92
- Carriaga Guide 93
- Shaft Ground 93
- Sprocket Shaft 98
- Guide Roller’ 98
- Sprocket Wheel 98
- 4.3 ADJUSTMENT 99
- ,’v?,?la 100
- CHAPTER 5 101
- TROUBLESHOOTING 101
- LIST OF FIGURES 101
- LIST OF TABLES 101
- ‘ARN’NG~ 102
- I printer mechanism 104
- Set the gap-adjustment lever 107
- Printhead 111
- 5.3 UNIT REPAIR 112
- ● The l/F cable is 113
- Solution 113
- 5.3.2 Printer Mechanism 115
- ● Replace the 116
- ● Resistance value: 117
- ● Sheet load 118
- ● Remove any 118
- CHAPTER 6 120
- MAINTENANCE 120
- 6.1 PREVENTIVE MAINTENANCE 121
- Adhesive Application Point 122
- No. of Point 122
- APPENDIX 124
- A.1 PRINCIPAL 126
- SPECIFICATIONS 126
- Fig. A-2. wPD7810/7811 Block 128
- E05A03BA 132
- (E05A03CA) 132
- Gate Array 132
- Memory Ce I 134
- A.1.4 494 Regulator IC 135
- A.1.5 7407 137
- Fig. A-1 2. 7407 Pin Diagram 137
- A.2 SCHEMATICS AND DIAGRAMS 138
- Fig, A-15 139
- Board Component Layout 139
- in Japan 142
- 87.07 -.6 142
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