Epson LQ-870 User manual

LQ-1170
24-PIN DOT MATRIX PRINTERS
TM-LQ8/1170
Back to Contents

LQ-870/1170
SERVICE MANUAL
EPSON
T$$$ Printed on recycled paper.

NOTICE
’ All rights reserved. Reproduction of any part of this manual in any from
whatsoever without SEIKO EPSON’s express written permission is forbidden.
* The contents of this manual are subject to change without notice.
* All efforts have been made to ensure the accuracy of the contents of this manual.
However, should any errors be detected, SEIKO EPSON would greatly appreciate
being informed of them.
* The above notwithstanding SEIKO EPSON can assume no responsibility for any
errors in this manual or the consequences thereof.
© Copyright 1991 by SEIKO EPSON CORPORATION
Nagano, Japan

REV.-A
PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1) personal injury, and 2) damage
to equipment:
DANGER Signals a precaution which, if ignored, could result in serious or fatal personal
injury. Great caution should be exercised in performing procedures preceded by
a DANGER headings.
WARNING Signals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/main-
tenance procedures.
DANGER
1. ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND THE
HOST COMPUTER BEFORE PERFORMING ANY MAINTENANCE OR REPAIR
PROCEDURE.
2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH
BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN
THEIR LINE OF WORK.
3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT
CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN
THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN
WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.
WARNING
1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON
CERTIFIED REPAIR TECHNICIAN.
2. MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED
VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PROD-
UCT HAS A PRIMARY-AC RATING DIFFERENT FROM THE AVAILABLE POWER
SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
3. ALWAYS VERIFY THATTHE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE
POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS
AND/OR INDIVIDUAL CHIPS.
4. IN ORDER TO PROTECT SENSITIVE /JP CHIPS AND CIRCUITRY, USE STATIC
DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESS-
ING INTERNAL COMPONENTS.
5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS
RECOMMENDED BY THE MANUFACTURER; INTRODUCTION OF SECOND-SOURCE
ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND
VOID ANY APPLICABLE EPSON WARRANTY.

REV.-A
PREFACE
This manual describes functions, theory of electrical and mechanical
operations, maintenance, and repair of the LO-870/1170.
The instructions and procedures included herein are intended for the
experienced repair technician, and attention should be given to the
precautions on the preceding page. The chapters are organized as follows:
Chapter 1
- Provides a general product overview, lists specifications,
and illustrates the main components of the printer.
Chapter 2 - Describes the theory of printer operation.
Chapter 3 -
Includes a step-by-step guide for product disassembly and
assembly.
Chapter 4 -
Includes a step-by-step guide for adjustment.
Chapter 5 - Provides Epson-approved techniques for troubleshooting.
Chapter 6 -
Describes preventive maintenance techniques and lists
lubricants and adhesives required to service the equipment.
l The contents of this manual are subject to change without notice
- iv -

Revision Level
Revision Date
I
1st printing
I
7/23/91
I
I-----
%ViSC?d
I
10/g/91
I
1~
2ndprhting
I
3/17/92
I

REV.-A
TABLE OF CONTENTS
CHAPTER 1.
CHAPTER 2.
CHAPTER 3.
CHAPTER 4.
CHAPTER 5.
CHAPTER 6.
APPENDIX
GENERAL DESCRIPTION
OPERATION PRINCIPLES
DISASSEMBLY AND ASSEMBLY
ADJUSTMENTS
TROUBLESHOOTING
MAINTENANCE
- vi -

6/4/93
CHAPTER 1
GENERAL DESCRIPTION
1.1 FEATURES .....................................................................
1-1
1.2 SPECIFICATIONS ................................................................
1-3
1.2.1 Hardware Specifications
.........................................................
1-3
1.2.2 Firmware Specifications
.........................................................
1-9
1.3 PARALLEL INTERFACE ...........................................................
1-14
1.4 CONTROL PANEL .............................................................
1-16
1.4.1 Buttons ......................................................................
1-16
1.4.2 Indicator Lights. ..............................................................
1-17
1.5 DIP SWITCHES AND JUMPERS ....................................................
1-18
1.5.1 DIP Switches ................................................................
1-18
1.52 Jumpers ...................................................................
1-19
1.6 OPERATING INSTRUCTIONS ......................................................
1-20
1.6.1 Self Test ...................................................................
1-20
1.6.2 Hexadecimal Dump Function
.....................................................
1-20
1.6.3 Paper-out Detection and Form Override Function
......................................
1-21
1.6.4 Error Conditions ..............................................................
1-21
1.6.5 Buzzer Operation .............................................................
1-21
1.6.6 Printer Initialization ............................................................
1-22
1.6.7 Default Values ...............................................................
1-22
1.6.8 Paper Loading and Ejection .....................................................
1-23
1.6.9 Tear-off Function
.............................................................
1-23
1.6.10 Paper-Thickness Lever Operation
................................................
1-24
1.6.11 Printer Protection for Heavy Duty Printing
...........................................
1-25
1.7 MAIN COMPONENTS ............................................................
1-26
1.7.1 C060 MAIN, C061 MAIN, and C060 MAIN B Board (Main Control Circuit Board) ...............
1-27
1.7.2 C060 PNL Board (Control Panel Circuit Board). .......................................
1-28
1.7.3 C060 PSB Board (Power Supply Circuit Board)
.......................................
1-28
1.7.4 C060 DRV Board (Head Control Circuit Board)
........................................
1-29
1.7.5 M-5D10/5D60 Printer Mechanism .................................................
1-29
1.7.6 Housing ...................................................................
1-30
l-i

6/4/93
LIST OF FIGURES
Figure 1-1.
Figure 1-2.
Figure 1-3.
Figure 1-4.
Figure 1-5.
Figure 1-6.
Figure 1-7.
Figure 1-8.
Figure 1-9.
Exterior View of the LQ-870
....................................................
1-2
Pin Configuration
...........................................................
1-3
Printable Area for Single-Sheet Paper
............................................
1-6
Printable Area for Continuous Paper
.............................................
1-6
Character Matrix
...........................................................
1-13
Data Transmission Timing
....................................................
1-14
Control Panel
.............................................................
1-16
Self-Test
................................................................
1-20
Hexadecimal Dump
.........................................................
1-20
Figure 1-10. Paper-Thickness Lever Positions
..............................................
1-24
Figure 1-11. LQ-870/1170 Component Layout ..............................................
1-26
Figure 1-12. C060 MAIN, C061 MAIN, and C060 MAIN B Boards ................................
1-27
Figure 1-13. C060 PNL Board .........................................................
1-28
Figure 1-14. C060 PSB Board .........................................................
1-28
Figure 1-15. C060 DRV Board .........................................................
1-29
Figure 1-16. M-5D10/5D60 Printer Mechanism ..............................................
1-29
Figure 1-17. Housing ................................................................
1-30
LIST OF TABLES
Table 1-1. Optional Interface Cards ....................................................
Table 1-2. Optional Units
1-1
...........................................................
1-2
Table 1-3. Specifications for Single-Sheet Paper
.............................................
1-4
Table 1-4. Specifications for Single-Sheet Multi-Part Forms (Carbonless Duplicating Paper)
..............
1-5
Table 1-5. Specifications for Continuous Paper
..............................................
1-5
Table 1-6. Specifications for Envelopes
....................................................
1-5
Table 1-7. Specifications for Labels
.......................................................
1-5
Table 1-8. Printing (Text Mode) ........................................................
1-10
Table 1-9. Printing (Bit Image Mode) .....................................................
1-11
Table 1-10. Character Matrix and Character Size ............................................
1-12
Table 1-11. Connector Pin Assignments and Signal Functions
..................................
1-14
Table 1-12. DIP Switch Set 1 (SW1) .....................................................
1-18
Table 1-13. DIP Switch Set 2 (SW2) .....................................................
1-18
Table 1-14. International and PC Character Set Selection ......................................
1-19
Table 1-15. Page Length .............................................................
1-19
Table 1-16. Paper-Thickness Lever Positions
...............................................
1-24
Table 1-17. Main Boards and Driver Board ................................................
1-26
l-ii

REV.-A
1.1 FEATURES
The LQ-870/1170 is a small, light-weight, low-cost printer that provides advanced paper
handling and is compatible with The LQ-510/550. The printer’s main features are:
I
0 Use of ESC/P 2 control codes
The printer can print fonts in various point sizes and receive and print raster graphic images.
l Compatibility with LQ and SQ series printers
0 Printing speeds:
300 characters per second (cps) in high-speed draft mode at 10 characters per inch (cpi)
330 cps (draft, 12 cpi)
275 cps (draft, 10 cpi)
1 10 cps (LO, 12 cpi)
92 cps (LO, 10 cpi)
0 Multiple fonts resident in the printer: nine letter quality (LQ) fonts (Roman, Sans Serif, Courier,
Prestige, Script, OCR-B, Script-C, Orator, and Orator-S) and one draft font
0 Clear, easy-to-read printing using standard EPSON fonts
0 Selection of fonts, condensed printing, and the cut-sheet feeder (CSF) bin using control panel buttons
0 Advanced paper handling
Continuous paper:
Three ways to insert continuous paper, using the front, bottom, or rear paper entrance
Auto backout and auto loading when using the front or rear paper entrance
Ability to use continuous paper without removing the cut-sheet feeder
Ability to use the standard tractor in three positions (two push tractor positions and one pull tractor
position)
Single-sheet paper:
Two ways to insert single-sheet paper, using the front or top paper entrance
Auto loading
0 Easy handling of single-sheet paper with the optional cut-sheet feeder
0 Optional tractor that can be used to create a push-pull tractor feeding
0 Optional interface cards
The LQ-870/1170 is equipped with the standard EPSON 8-bit parallel interface. The optional
interface cards ensure compatibility with a wide variety of computers. Table l-l Lists the optional
interface cards, Table 1-2 lists the optional units available for the LO-870/1170, and Figure l-l
shows an exterior view of the LO-870/1170.
Table l-l Optional Interface Cards
Model No. Description
C82305’
Serial interface card (inch screw) l 1
C82306’
Serial interface card (milli screw) l 1
C82307’
32KB serial interface card (inch screw)
C82308’
32KB serial interface card (milli screw)
1-1

REV.-A
*The last digit in each part numbers above, represented by an asterisk (‘), varies depending on the
country.
l l.You cannot use the printer with the following baud rates: 1800, 200, 134.5, 1 10, or 75 bps.
NOTE: Refer to the “Optional Interface Technical Manual” for more information on the optional
interface cards.
Table 1-2. Optional Units for LQ-870
1 Model No. /
Description
C80637’
Single-bin cut-sheet feeder
C80638‘
High-capacity cut-sheet feeder
I
C80020 1
Tractor
7753 Fabric ribbon cartridge
7768 Film ribbon cartridge
Table 1-2-1. Optional Units for LQ-1170
1 Model No. /
Description
C80639'
Single-bin cut-sheet feeder
C80640’
High-capacity cut-sheet feeder
I
C8002 1 l Tractor
I
r I
7754 Fabric ribbon cartridge
I
7770 Film ribbon cartridge
*When the last digit in the part number above is represented by an asterisk (“), the number varies
depending on the country.
Figure 1-1. Exterior View of the LQ-870
1-2

REV.-A
1.2 SPECIFICATIONS
This section provides the specifications for the LQ-870/1170.
1.2.1 Hardware Specifications
Printing method Serial, impact, dot matrix
Pin configuration 24 wires; 12 x 2 staggered, diameter 0.2 mm (.008 in.)
Feeding methods
Line spacing
Paper insertion
Paper feed speed
Figure 1-2. Pin Configuration
Friction feeding (front and top paper entrances)
Push tractor feeding (front and rear paper entrances)
Pull tractor feeding (front and bottom paper entrances)
Push-pull tractor feeding (front and rear paper entrances)
1/6 inch, 1/8 inch, or programmable in units of 1/360 inch
Friction feeding: front or top paper entrance
Tractor feeding: front, bottom, or rear paper entrance
Friction feeding without cut-sheet feeder:
59.0 msec for a 1/6-inch line feed
3.6 inches per second (ips) during continuous feeding
Friction feeding with cut-sheet feeder:
62.7 msec for a 1/6-inch line feed
3.3 ips during continuous feeding
Tractor feeding:
64.1 msec for a 1/6-inch line feed
3.0 ips during continuous feeding
NOTE: Paper handling precautions are listed below.
1-3

REV.-A
Friction feeding precautions
0
Move the release lever to the FRICTION position.
0
Load paper into the front or top paper entrance.
0 Do not use continuous paper.
0
Do not perform any reverse feeds within the top 8.5 mm (.34 in.) or bottom 22 mm (.87 in.) of
the paper.
0
Do not perform reverse feeds greater than l/6 inch after a paper end is detected.
0 Use the paper tension unit.
0
Load single-sheet multi-part forms only into the front paper entrance.
0 Use only carbonless multi-part forms.
Push tractor feeding precautions
0
Move the release lever to the REAR PUSH/FRONT PUSH position.
0 Load paper into the rear paper entrance.
0 Release the friction-feed mechanism.
0
Multi-part forms must be spot pasted beyond the perforation between the sprocket holes.
0 Use only carbonless multi-part forms.
l Use the paper tension unit.
0 Do not perform reverse feeds greater than l/6 inch.
0
Because paper feeding accuracy cannot be assured after a paper end is detected, do not perform
reverse feeds after a paper end is detected.
Push-pull tractor feeding precautions
0
Move the release lever to the REAR PUSH/FRONT PUSH position.
l
Load paper into the front, rear, or bottom paper entrance.
0 Release the friction-feed mechanism.
l
Remove the paper tension unit and attach the pull tractor.
0
Make sure there is no slack in the paper between the platen and the pull tractor.
0 Carefully align the pull tractor and push tractor sprockets.
l
Paper for multiple copies must be spot pasted beyond the perforation between the sprocket holes.
0 Use only carbonless multi-part forms.
0 Do not perform reverse feeds greater than l/6 inch.
0
Do not perform reverse feeds after a paper end is detected.
Pull tractor feeding precautions
0 Move the release lever to the PULL position.
0
Load paper into the front or bottom paper entrance.
0 Release the friction feed mechanism.
0
Remove the paper tension unit and attach the pull tractor.
0
Paper for multiple copies must be spot pasted beyond the perforation between the sprocket holes.
0 Use only carbonless multi-part forms.
0 Do not perform reverse feeds.
Paper specifications See Tables 1-3, 1-4, 1-5, 1-6, and 1-7.
Table 1-3. Specifications for Single-Sheet Paper (80/136 column)
Width
Length
Thickness
Weight
Quality
148 to 257/420 mm (5.8 to 10.1/16.5 in.) (top insertion)
182 to 257/364 mm (7.2 to 10.1/14.3 in.) (front insertion)
364 mm (14.3 in.), maximum
0.065 to 0.14 mm (0.0025 to 0.0055 in.)
14 to 24 lb (52.3 to 90 g/m2)
Standard paper (such as photocopier paper)
1-4

REV.-A
Table 1-4. Specifications for Single-Sheet Multi-Part Forms (Carbonless) (80/l 36 column)
Width
Length
Thickness
Weight
Quality
Copies
182 to 216/364 mm (7.2 to 8.5/l 4.3 in.)
257 to 297 mm (10.7 to 11.7 in.)
0.065 to 0.14 mm (0.0025 to 0.0055 in.)- per sheet
0.12 to 0.64 mm (0.0047 to 0.0256 in.) total
17 to 24 lb (52.3 to 90 g/mZ) single sheets
12 to 15 lb (40 to 58 g/mZ) each
Carbonless duplicating paper
Four sheets (one original and three copies)
Table l-5. Specifications for Continuous Paper (80/l 36 column)
Width
Thickness
Weight
Quality
Copies
101 to 254/406 mm (4.0 to 10.0/16 in.)
0.065 to 0.10 mm (0.0025 to 0.0039 in.) single sheet
0.065 to 0.32 mm (0.0025 to 0.012 in.)total
14 to 22 lb (52.3 to 82 g/m2) single sheet
12 to 15 lb (40 to 58 g/m2) each
Standard paper or carbonless duplicating paper
4 sheets (1 original and 3 copies)
Table 1-6. Specifications for Envelopes
Size No. 6 = 166 mm x 92 mm (6.53 in. x 3.62 in.)
No. 10 = 240 mm x 104 mm (9.45 in. x 4.09 in.)
Thickness 0.16 to 0.52 mm (0.0063 to 0.0197 in.)
Differences in thickness within the printing area must be less
than 0.25 mm (0.0098 in.).
Weight 12 to 24 lb (45 to 9 1
g/m2)
Quality Bond paper, standard paper, air mail
Copies Not available
NOTES: 0 Printing on envelopes is available only at normal temperatures.
0 Load envelopes only into the top paper entrance.
0 Keep the longer side of the envelope horizontal when you insert it.
0 Place the left edge of a no. 6 envelope at the sheet guide mark.
Table 1-7. Specifications for Labels
Label size
Thickness
Copies
2 l/2 in x 15/16 in.
4 in. x 15/16 in.
4 in. x 7/l 6 in.
0.07 to 0.09 mm (0.0028 to 0.0031 in.)-for the backing paper
0.16 to 0.19 mm (0.0063 to 0.0075 in.)-total
Not available
NOTES: 0 Printing on labels is available only at normal temperatures.
0 Only use labels on continuous backing paper with sprocket holes for tractor feeding.
0 Labels with pressure-sensitive paper must be spot pasted beyond the perforation between
the sprocketholes and the total thickness must be less than or equal to 0.3 mm (0.0 1 18
‘in.). You can print labels only when the temperature is between 5 and 35 degrees C (4 1
and 95 degrees F) and humidity is between 10% and 80% RH.
0 Examples of labels: Avery continuous form labels and Avery mini-line labels
1-5

REV.-A
Printable area See Figures 1-3, 1-4, and 1-5.
top Insertion
148-257 mm (5.8-10 1-j
<
front lnsertlon 182-257 mm (7 Z-10.1”)
3
_ ‘1) L
Prtntable area Max. 203 2 mm I8 I” 1
A-1)
r
7 -
l 1
l
ABC
I
-i
XYZ
) 3.0 mm (0.12 in.) or more when paper width is less than 229 mm (9 in.).
25 mm (0.9 in.) or more for top insertion or 26 mm (1 .O in.) or more for front insertion when paper
width is 257 mm (10.1 in.).
For top insertion, paper feeding accuracy cannot be assured within 26 mm (1.02 in.) from the bottom
edge of the paper.
For front insertion, paper feeding accuracy cannot be assured within 47.0 mm (1.85 in.) from the
bottom edge of the paper.
Figure 1-3 Printable Area for Single-Sheet Paper
Prmlable
area
I
4
9mmtO 35”)
or more
+
9mm10 35”)
or more
+
I
Prmtable
area
0
0
0
0
0
0
0
0
0
0
-l
0
XYZ 0
0
0
----o_
0
0
7Gq;
0
0
0
0
0
0
l 1) 13 mm (0.51 in.) or more with paper 101 to 241 mm (4 to 9.5 in.) wide. 25 mm (0.9 in.) or more
for rear insertion or 26 mm (1 .O in.) or more for front insertion with paper 254 mm (10 in.) wide.
Figure 1-4 Printable Area for Continuous Paper
1-6

REV.-A
Ink ribbon
Reliability
80column:
Black ribbon cartridge #7753
Film ribbon cartridge #7768
136-column:
Black ribbon cartridge #7754
Film ribbon cartridge #7770
Color Black
Life 2 million characters at 48 dots/character (black ribbon)
0.2 million characters at 48 dots/character (film ribbon), 80-column
0.3 million characters at 48 dots/character (film ribbon), 136-column
Dimensions of ribbon cartridge:
80-column:
293 mm (width) x 34 mm (height) x 72 mm (depth)
1 1.7 in. (width) x 1.4 in. (height) x 2.9 in. (depth)
136-column:
468.5 mm (width) x 34 mm (height) x 72 mm (depth)
18.4 in. (width) x 1.4 in. (height) x 2.9 in. (depth)
Mean cycles between failures (MCBF): 5 million lines (excluding printhead)
Mean time between failures (MTBF): 4000 power-on hours (POH) at 25% duty,
80-column
Printhead life
Safety approvals
Mean time between failures (MCBF): 6000 power-on hours (POH) at 25% duty,
136-column
200 million strokes (black ribbon)
100 million strokes (film ribbon)
Safety standards UL1950 with D3 (U.S. version)
CSA22.2#220
EN 60950 (TUV) (European version)
Radio frequency
interference (RFI) FCC class B (U.S. version)
VDE087 1 (self-certification) (European version)
Electrical specifications 120 V version Rated voltage 120 VAC
Input voltage range 103.5 to 132 VAC
Rated frequency range 50 to 60 Hz
Input frequency range 49.5 to 60.5 Hz
Rated current 2.0 A
Power consumption Approx.58 W (during self-
test in draft)
‘Insulation resistance 10 Megohms minimun (at
500 VDC between AC line
and chassis)
1-7

REV.-A
Environmental conditions
Physical specifications
Dielectric strength
220 to 240 V Rated voltage
version Input voltage range
Rated frequency range
Input frequency range
Rated current
Power consumption
Insulation resistance
Dielectric strength
Temperature
Humidity
Resistance to shock
Resistance to vibration
Weight
Dimensions
1000 VAC rms for one minute or
1200 VAC rms for one second
(between AC line and chassis)
220 to 240 VAC
198 to 264 VAC
50 to 60 Hz
49.5 to 60.5 Hz
1.0 A
Approx. 58 W (during self-test in
draft mode at 10 cpi)
10 Megohms minimum (at 500 VDC
between AC line and chassis)
1250 VAC rms for one minute or
1500 VAC rms for one second
(between AC line and chassis)
5 to 35 degrees C (41 to 95
degrees F), operating
-30 to 65 degrees C (-22 to
149 degrees F), in shipping
container
10 to 80 % RH, operating
5 to 85 % RH, storage
1 G, within 1 ms, operating
2 G, within 1 ms, storage
0.25 G, 55 Hz, maximum, operating
0.50 G, 55 Hz, maximum, storage
80-column:
Approx. 8.8 kg (4.0 lb)
136-column:
Approx. 1 1.5 kg (5.2 lb)
80-column:
449 mm (width) x 365 mm
(depth) x 17 1 mm (height)
17.7 in. (width) x 14.7 in.
(depth) x 6 in. (height) 136-
column:
624 mm (width) x 365 mm
(depth) x 17 1 mm (height)
24.6 in. (width) x 14.7 in. (depth)
x6
in. (height)
1-8

10/9/91
1.2.2 Firmware Specifications
Control codes
ESC/PTM level ESC/P 2
(EPSON standard code for printers)
Printing direction Bidirectional with logic seeking
Input data buffer
8KB, 32KB, 84KB; to change RAM (4A 5A)
Character code 8 bits
Character tables
Fonts and pitches
Bit
map fonts
Scalable fonts
Italic character table, PC 437, PC 850, PC 880, PC 883, PC 865
(PC indicates character tables for personal computers.)
EPSON Roman 10, 12, 15, proportional
EPSON Sans Serii 10, 12, 15, proportional
EPSON Courier 10, 12, 15
EPSON Prestige 10,12
EPSON Script 10,12
EPSON Script C
proportional
OCR-B 10
EPSON Orator 10
EPSON Orator-S 10
EPSON Draft 10, 12, 15
EPSON Roman 8 to 32 pt
EPSON Sans Serif 8 to 32 pt
Printing modes
It is possible to select and mix the following printing modes, except
15 cpi condensed, which is not available.
- Print quality (draft or LQ)
. Character pitch (10, 12, 15, or proportional)
. Condensed
+ Double-width
+ Double-height
. Emphasized
- Double-strike
- Italic
- Underlined
- Double-underlined
- Overscore
m Strike-through
* Outline . Shadow
1-9

1 o/9/9 1
NOTES: High-speed draft is valid when the printer’s status is as follows:
- High-speed draft mode is selected by DIP switch.
- Emphasized mode is not selected.
. Condensed mode is not selected.
- Draft mode is selected.
. No D/L (download) characters are sent to the printer.
- The horizontal dot space of characters is not set.
. No bit image is sent to the printer.
* Super/subscript is not selected.
(The printer switches back to normal mode to print emphasized, condensed, or download
characters and bit images.)
Printing speed
See Tables l-8 and l-9.
Printing columns
See Table 1-8.
Character matrix
See Table l-10.
Character size
See Table l-10.
Table 1-8. Printing (Text Mode) 80/13&Column
cpi:
characters per inch
cps:
characters per second
LQ:
letter quality
HSD: high-speed draft
1-10

REV.-A
Table 1-9. Printing (Bit Image Mode) 80/136-Column
dpi: dots per inch
ips: inches per second
1-11