Epson LX-86TM Specifiche Scaricare il pdf (Pagina 33)

REV.-A

2.1 GENERAL

This chapter describes the component connections, specifications and operation of the power supply

circuit section, the software for the control circuit section, and the operation of the hardware and the

printer mechanism.

Please note that the following units are assumed when omitted in this chapter.

Resistor:

Units are Ohms.

Capacitor: Units are Farads.

The components listed below are referred to as follows:

ROCX board: Main board

LCPNL

board: Control panel

Model-3Al O: Printer mechanism

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.—

2-1

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 141 142

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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