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Epson FX Series Product Support
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REPAIR
ANALYSIS
PROCEDURES
2.9
INCORRECT
PRINTING
Note:
See
chart
2.1
'Print
Quality(Probable
Causes)',
on
page
2-11,
before
continuing
with
RAP
2.9
1.
Remove
top
cover
(Procedure
4.1).
Reconnect
control
panel
(Procedure
4.2).
Press
and
hold
the
Draft/LF
or
LF
switch,
turn
power
on.
Release
switch
when
printer
starts
to
print.
Print
is
produced
on
the
paper
(regardless
of
the
quality).
YES
NO
Proceed
to
RAP
2.10
2.
Characters
printed
are
dark.
YES
NO
Ribbon
advances
when
the
carriage
moves
left
and
right.
YES
NO
Proceed
to
RAP
2.11
Ribbon
is
fresh,
ink
is
not
dried
out.
YES
NO
Replace
ribbon
with
a
new
ribbon.
Return
to
the
initial
checks
and
continue.
3.
Check
and
adjust
(if
necessary)
the
platen
to
print
head
gap.
and
ribbon
mask
(Procedure
4.8.1
&
4.8.2).
Problem
is
solved.
YES
NO
I
I
2-10
Parts
of
characters
are
missing.
YES
NO
Adjust
PTS
sensor
(Procedure
4.12).
Problem
is
solved.
YES
NO
Proceed
to
RAP
2.10
Proceed
to
RAP
2
.10
4.
Return
to
initial
checks
and
continue
3
1
5
COMMON
9
4
8
Head
Connector
Figure
2-4
Print
Head
Connector
EPSON
PRINTER
49
51
Table of Contents
Table of Contents
3
Default Chapter
4
How to Use this Manual
4
Introduction
4
1 Principles of Operation
5
Principles of Operation
10
2 Wiring Data
19
Table of Contents
34
Default Chapter
36
Introduction
36
1 Service Call Procedures
37
Getting Started
37
Initial Checks
37
Power2-2
42
Alarm Sounds at Power on
45
Paper out Not Sensed
46
Abnormal Carriage Operation
47
Incorrect Paper out Tones
48
Paper Feed Motor
49
Incorrect Control Panel Status 2
49
Incorrect Printing
50
Dots or Characters Missing
51
Ribbon Not Advancing
52
On-Line/Off-Line Mode Malfunction
53
Incorrect Operation with Host Computer
53
3 Parts Lists
69
FX-80/80 + /85 Covers and Electrical Components
81
Printer Mechanism Components
83
Printer Mechanism Components (Part 2)
85
Repairs/Adjustments
100
Upper Case Assembly
100
Control Panel
100
Power Transformer
100
Fuse and Filter Circuit Board
101
Daughter Board
101
Control Circuit Board (Main Board)
101
Printer Mechanism
101
Print Head Unit
102
Print Head Adjustment
103
Home Position (HP) Sensor Assembly
103
HP Sensor Adjustment
103
Timing Belt Motor Assembly
104
Timing Belt Motor Adjustment
105
Timing Belt
105
Timing Belt Tension Adjustment
105
Ptssensor Board Assembly
106
Ptssensor Adjustment
106
Paper Feed Motor Assembly
107
Paper Feed Motor Adjustment
107
PE Board Assembly
108
Integrated Circuits
108
Carriage (Fxseries)
109
Carriage (MX Series)
110
5 Final Actions
112
Introduction
112
Lubrication
112
Printer Cleaning
121
6 General
122
Specifications
122
Special Tools and Supplies
123
Dipswitch Settings
123
IC Locations
135
Interface Boards
140
Dipswitch Settings for Interface Boards
140
Install Checklist
150
Revisions to the Manual
150
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User Manual
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Epson FX Series Specifications
General
Connectivity
Parallel
Paper Handling
Friction feed, Tractor feed
Emulation
Epson ESC/P
Noise Level
55 dB(A)
Print Method
Impact dot matrix
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