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Table of contents
TROUBLESHOOTING
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REV.-A
TABLE OF CONTENTS
CHAPTER 1.
GENERAL DESCRIPTION
CHAPTER 2.
OPERATING PRINCIPLES
CHAPTER 3.
OPTIONAL EQUIPMENTS
CHAPTER 4.
DISASSEMBLY, ASSEMBLY, AND ADJUSTMENT
CHAPTER 5.
TROUBLESHOOTING
CHAPTER 6.
MAINTENANCE
APPENDIX
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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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