Epson LX-86TM Dokumentacja Pobierz pdf (Strona 28)

REV.-A

1.5.3

ROCX

Board Unit

The

ROCX

board contains the main control circuit, driver circuit, and voltage regulator circuit. The main

ICS

on the

ROCX

boards are the pPD78 10HG CPU and the E05A03 gate array which controls everything.

\----=--

Fig. 1-14. ROCX Board Unit

1.5.4

LCPNL

Board Unit

The

LCPNL

board unit is a control panel of LX-800 which contains the indicator

LEDs,

switches and

buzzer.

Fig. 1-15. LCPNL Board Unit

1-20

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 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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