Epson LQ-1050 User manual

EPSON
EPSON TERMINAL PRINTER
LQ-850/105O
TECHNICAL MANUAL
Y45499901 o-z
,7
1 !
.,
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REV.-A
PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1 ) personal injury, and 2) damage
to equipment:
DANGERSignals 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.
WARNINGSignals 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.
1.
2.
3.
1.
2.
3.
4.
5.
DANGER
ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND THE
HOST COMPUTER BEFORE PERFORMING ANY MAINTENANCE OR REPAIR
PROCEDURE.
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.
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
REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON
CERTIFIED REPAIR TECHNICIAN.
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.
ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE
POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS
AND/OR INDIVIDUAL CHIPS.
IN ORDER TO PROTECT SENSITIVE
/.LP CHIPS AND CIRCUITRY, USE STATIC
DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESS-
ING INTERNAL COMPONENTS.
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.
- ii -
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REV.-A
PREFACE
This manual describes functions, theory of electrical and mechanical
operations, maintenance, and repair of the LQ-850 and LQ-1 050.
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 -
—
Chapter 2 -
Chapter 3 -
Chapter 4 -
Chapter 5 -
Chapter 6 -
Provides a general product overview, lists specifications,
and illustrates the main components of the printer.
Describes the theory of printer
=peration.
Discusses the options
Includes a step-by-step guide for product disassembly,
assembly, and adjustment.
Provides Epson-approved techniques for troubleshooting.
Describes preventive maintenance techniques and lists
lubricants and adhesives required to service the equipment.
● The contents of this manual are subject to change without notice.
- iv -
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REVISION TABLE
REVISION DATE ISSUED CHANGE DOCUMENT
A
Aug. 31, 1987 1st issue
-v-

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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REV.-A
1.1
1.2
1.3
—
1.4
1.5
1.6
1.7
1.8
1.9
CHAPTER 1
GENERAL DESCRI
PTION
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 1
SPECIFICATIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 3
1.2.1 Hardware Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 3
1.2.2 Firmware Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 9
INTERFACE Overflew....... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
1.3.1 8-bit Parallel Interface Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
1.3.2 RS-232C Serial Interface Specifica~ions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-14
DIP SWITCH AND JUMPER SETTINGS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-16
SELF-TEST OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-19
HEXADECIMAL DUMP FUNCTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-20
PRINTER INITIALIZATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
1.7.1 Hardware initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
1.7.2 Software Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
BUZZER OPERATION AND ERROR CONDITIONS . . . . . . . . . . . . . . . . . . . . . 1-22
1.8.1 Buzzer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
1.8.2 Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
MAIN COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-23
1.9.1 Printer Mechanism
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-23
1.9.1.1 Paper Leading and Paper Ejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
1.9.1.2 Auto-Tear-OFF Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
1.9.2
1.9.3
1.9.4
1.9.5
MONMA Board (Main Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
MONPS/MONPSE Board
(Power Supply Circuit Board)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-26
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-29
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REV.-A
LIST OF FIGURES
Fig. 1-1. Exterior Views of the
LQ-850/l 050
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 1
Fig. 1-2.
Printhead Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 3
Fig. 1-3. Cut Sheet Paper Printable Area
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 5
Fig. 1-4. Fanfold Paper Printable Area
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 6
Fig. 1-5.
Head Adjustment Lever Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 7
Fig. 1-6. Character Matrix
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-11
Fig. 1-7. Data transmission Timing of 8-bit Parallel interface . . . . . 1-13
Fig. 1-8. 36-Pin 57-30360 Connector
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-13
Fig. 1-9.
Hand Shaking of RS-232C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Fig. 1-10. Serial Data Transmission Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Fig. 1-11. Serial Interface Connector
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-15
Fig. 1-12. DIP switches 1 and 2 Factory Settings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-18
Fig. 1-13. Self-Test Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Fig. 1-14. Hexadecimal Dump List
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-20
Fig. 1-15.
LQ-850/1050 Component Locations
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-23
Fig. 1-16. Model-531 0/5360 Printer Mechanism
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-23
Fig. 1-17. MONMA Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
Fig. 1-18. MONPS/MONPSE Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
Fig. 1-19. Control PaneI
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-27
Fig. 1-20. Housings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-29
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REV.-A
LIST OF TABLES
Table 1-1. Optional
Units...................................................o..mmm..mmo.mmm""".."".. 1- 2
Table 1-2. Optional Interface Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 2
Table 1-3. Line Feed Speeds
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 4
Table 1-4. Cut Sheet Paper Specified Conditions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 4
Table 1-5.
Fanfold Paper Specified Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 5
Table 1-6. Lever Adjustment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 7
Table 1-7. Ribbon Cartridge Specification
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 7
Table 1-8.
Dimensions and Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 8
Table 1-9. Electrical Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 8
Table 1-10. Environmental Conditions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1- 8
Table 1-11. Printing Mode
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1o
Table 1-12. Character Matrix and Character Size
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-12
Table 1-13. Serial Interface Handshaking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Table 1-14. DIP Switch 1 Settings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-16
Table 1-15. International Character Set Designation . . . . . . . . . . . . . . . . . . . . . . . . 1-16
Table 1-16. DIP Switch 2 Settings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-17
Table 1-17. Interface Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Table 1-18. Baud Rate Selection
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-17
Table 1-19. Jumper Setting
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-18
Table 1-20. Self-Test Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-19
Table 1-21. Hexadecimal Dump Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
l-iii
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REV.-A
1.1 FEATURES
The LQ-850/ 1050 printers are multifunctional,
Zq-pin printhead, impact dot matrix printers The main
features of the these printers are:
.-—.— -
● Upward compatibility with the LQ-800/l 000
● A maximum print speed of 264
CPS in draft mode at 12 CPI and of 88 CpS in l-Q mode at 12 Cpl
● Direct selection of font, pitch, and normalfcondensed mode from the control panel
0 Automatic paper-10 adin9/ejectin9 function
● Low-noise acoustics
. Both 8-bit parallel and
RS-232C serial interfaces
● Push and (optional) pull tractor feedin9
● Advanced paper handling:
Auto backing of fanfold paper and autoloadin9 of cut sheet paper
Auto ejecting of cut sheet paper and autoloadin9 of fanfold paper
Printing of fanfold paper without removal of the cut sheet feeder (option)
● Optional interface for the EPSON 8100 series
● Optional low-priced, single-bin cut sheet feeder which
cont~ins enveloPe feeding capability
Figu~e 1-1 shows exterior views of the printers, Table 1- 1 lists optional units available, and Table 1-2
lists the optional interface boards (refer to Chapter 3for more detailed information) for the
LQ-8!30/l 050.
Settings for
.
Continuou5 Paper
LQ-850
Setting for Cut Sheet Paper
LQ-1 050
Fig. 1-1. Exterior Views of the
LQ-850/1050
1-1
“1

Table 1-1. Optional Units
No.
Name
LQ-850
LO-1 050
#73 11 Tractor unit o
#731 2 Tractor unit o
#7339Cut sheet feeder (single-bin) o
#7340Cut sheet feeder (single-bin) o
#7753Ribbon cartridge o
#7754Ribbon cartridge o
#7400Courier font-module o
#7401Prestige font-module o
#7402Script font-module o
#7403
OCR-B font-module
o
Table 1-2. Optional Interface Boards
No.
#8143
#8 145
#8148
#8 149
#8 149M
#816 1
#8 165
#8 172
#81 72M
Name
New serial interface
RS-232C current loop interface type II
Intelligent serial interface
Intelligent serial interface type II
Intelligent serial interface type III
IEEE-488 interface
Intelligent IEEE-488 interface
32 K-byte buffer parallel interface
128K-byte buffer parallel interface
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1.2 SPECIFICATIONS
The LQ-850/ 1050 communicates with a wide variety of host computers, with aid of the optional Identity
Module.
However, this section describes the specifications for the printer without the Identity Module option.
Specifications not affected by firmware (hardware specifications) are the same whether or not the
Identity Module is installed.
1.2.1 Hardware Specifications
Printing Method Serial, impact dot matrix
Pin Configuration See Figure 1-2 (12X 2 staggered, diameter: 0.2 mm).
Feeding Method
T
I o
fhz
m
:
!-
I
11
13
15
17
19
21
23
!
6
10 “—
12
$
1’
16
1
18
20
22
4
Fig. 1-2. Printhead Pin Configuration
Friction feed
Tractor feed (push: standard, pull: optional)
NOTES: 1. When using friction feed:
● Use the paper tension unit.
● Do not use fanfold paper.
● Do not perform any reverse paper feed operations within the top 8.5 mm and bottom
22 mm area of the paper.
● Do not perform reverse feed beyond than 1/6 inches after the paper end has been
detected.
● Do not use multi-part, single-sheet forms.
2. When using tractor feed:
● Release the friction feed mechanism.
● Multiple copies for printing must be finished by pasting them together at the line or dots.
● Copy paper must be a carbonless multi-part paper.
a) When using push tractor feed:
● Use the paper tension unit.
1-3

REV.-A
● Do not perform reverse feeding for more than 1/6 inches.
● Because accuracy of paper feed cannot be assured, do not perform reverse feeding
after the paper end has been detected.
b) When using pull tractor feed:
● Remove the paper tension unit and mount the pull tractor unit.
● Use the paper path when a single sheet is inserted.
c) When using push-pull tractor feed:
● Remove the paper tension unit and mount the pull tractor unit.
● Do not loosen the paper between the platen and the pull sprocket.
● Precisely the horizontal position of the pull sprocket and push tractor.
● Do not perform reverse feeding for more than 1/6”.
. Do not perform reverse feeding after the paper end has been detected.
Paper Loading Directions
Fanfold paper Inserted from the rear side
Cut sheet paper Inserted from the up side
Line Spacing 1/6” or programmable (min. 1/180”)
Line Feed Speed See Table 1-3
Table 1-3. Line Feed Speeds
Feeding Method 1/6” Line Spacing Continuous
[ins/line] IIPS]
Friction w/o
CSF
603.0
Friction w/
CSF
65 2.7
Tractor 65 2.7
Paper specifications
Cut sheet paper Refer to Table 1-4.
Table 1-4. Cut Sheet Paper Specified Conditions
LQ-850
LQ-1 050
Width [mm] 182-257 (7.2 - 10.1”) 182-364 (7.2 - 14.4”)
Length
[mm] 182 -305 (7.2 - 12.0”)
Thickness [mm]
I 0.065 -0.10 (0.0025 - 0.004”)
Weight [lb]
I
14
-22 (52 -82 g\m2)
Quality Plain paper
Copies
Not available
Fanfold paper Refer to Table 1-5,
1-4

REV.-A
Table 1-5. Fanfold Paper Specified Conditions
LQ-850
LQ-1 050
Width [mm]101 - 254 (4.0 - 10. O”)
101 - 406 (4.0 - 16.0”)
Copies [sheet]
4 (1 original + 3 ) at normal temperature
3 (1 original + 2 ) at all temperature range
Quality Plain paper
Total Thickness 0.06 -0.32 (0.0023 -0.01 2“)
[mm]
Weight [lb]
1 sheet ..................14 - 22 (52 - 82
g/m2)
4 sheets ..................12 -
15 (40 -58.2 g/m2) for each
Printable Area
— Cut sheet paper See Figure 1-3.
—
1-
7.2 - 10,1*’
(1 4.4)”, 182- 257 (364) mm
9
0.1 2“, 3 mm_ ‘
1-
Printable area
I
or more
1
T-
0.33”, 8.5 mm
or more
1
D,
r
n
t
a
Max. 12“,
b
n
1’
305 I
1
e
a
r
e
a
0.53”,
T
ABC
T
XYZ
L
ABC
--l
XYZ
3.5 mm
or more
_J_~
NOTES: 1. Values in the parentheses apply to the LQ-105O.
-0.1 2“, 3 mm
or more
2. Printing is possible for approximately 42 mm after the bottom edge of a page has been
detected. Thus, the value 13.5 mm (lowest print position) is given for reference only. Paper
feed accuracy cannot be assured in the area approximately 22 mm (0.87”) from the bottom
edge of the page.
Fig. 1-3. Cut Sheet Paper Printable Area
1-5
m ,

REV.-A
Fanfold paper See Figure 1-4.
4-1O*1(1 6)”, 101 - 254 (406) mm
b.
d
*2
~
Printable area
J
*2
o
0
0
Printable ;
area
1
0
0
0
0.35”, 9 mm ;
or moreo
;
0.35”, 9 mm o
or more
t
o
0
0
0
Printable o
area o
0
0
0
L-
ABC -1
XYZ
------------------ —------
rABC
7
XYZ
0
0
0
0
0
0
0
0
0
0
0
--
0
0
0
0
0
0
0
0
0
0
0
NOTE: 1. Values in the parentheses are apply to LQ-105O.
2. 0.47”, 12 mm or more when the 101 to 242 mm (4 to 9.5”) width paper is used.
0.98”, 25 mm or more when the 254 mm (1 O“) width paper is used.
Fig. 1-4. Fanfold Paper Printable Area
Envelopes
Size
No. 6 (166 X 92 mm), No. 10 (240 X 104 mm)
Quality Bond paper, xerographic copier paper, airmail paper
Thickness
0.16-0.52 mm (0.0063 -0.01 97”)
NOTE: Differences in thickness within printing area must be less than 0.25 mm (0.0098”).
Weight 121 -241 lb (45 -91
g/m2)
NOTES: 1. Envelope printing is only available at normal temperature.
2. Keep the longer side of the envelope horizontally at setting.
3. Set the left of No. 6 envelope at the setting mark of the sheet guide.
Label
Size
2 1/2 X 15/1 6“, 4 X 15/16”, 4 X 17/16”
Thickness
O.19 mm (0.0075) max.
NOTE: Thickness excluding the base paper must be less than or equal to O.12 mm (0.0075”).
1-6

REV.-A
NOTES: 1. Printing of labels is only available at normal temperature.
2. Labels must be fanfold.
3. Labels with pressure-sensitive paper must be jointed by pasting along the dots or lines,
and the total thickness must be less than or equal to 0.3 mm (O.
1 1 8“) to be printed out
under conditions that must be between 5 to 35 “C and 20 to
80Y0 RH.
4. Examples of labels: AVERY CONTINUOUS FROM LABELS
AVERY MINI-LINE LABELS
Lever Adjustment See Figure 1-5 and Table 1-6.
Table 1-6. Lever Adjustment
Lever Position Paper Thickness [mm]
2nd 0.06 - 0.12
3rd 0.13 -0.17
—
4th 0.18 -0.25
5th
0.26 -0.32
1
Head adjustment Lever
n
‘orwardw ,, f=;tackwa’d
J——l—l
Fig. 1.5. Head Adjustment Lever Posisitioning
NOTES: 1. When printing density becomes lighter, set the head adjustment lever one position lower.
2. When using thicker paper than shown in the above table, set the head adjustment lever
to the 6th or higher appropriate position by performing the self-test operation.
Ribbon Cartridge See Table 1-7.
Table 1-7. Ribbon Cartridge Specification
Ribbon Model No. #7753#7754
Printer
LQ-850
LQ-1 050
Color
Black
Life
[characters] 2 million
(LQ, self-test)
Dimension
[mm] 290 X 34 X 71 468 X 34 X 80
(W) X (h) X (d)
1-7

REV.-A
Dimensions See Table 1-8 (Details are shown in Figures A-45 and 46.)
WeightSee Table 1-8.
Table 1-8. Dimensions and Weight
Width [mm] Height [mm] Depth [mm] Weight [Kg]
LQ-850 430142 36010
LQ-1 050 60514236012
NOTE: Excluding paper feed knob and paper guide.
Electrical Specifications See Table 1-9.
Table 1-9. Electrical Specifications
L
120 V Version 220/240 V Version
Voltage [V AC]
I
108 - 132
I
198 - 264
Frequency range [Hz]
I
49.5 - 60.5
Rating current [A]
I
2
I
1
Insulation resistance [M ohm] min. 10
(between AC line and chassis)
Dielectric strength [V AC, rms]
(1 minute, between AC line and chassis) 1250 3750
Environmental Conditions Refer to Table 1-10.
Table 1-10. Environmental Conditions
Storage Operating
Temperature [“C] –30 - 655 - 35
Humidity [% RH]
5 - 8510- 80
Resistance to shock [G] (within 1 ms)
2 1
Resistance to Vibration [G] (55 Hz, max.) 0.500.25
Reliability
MCBF
MTBF
Printhead life
5 million lines (excluding printhead)
(MCBF . . .
Mean Cycles Between Failure)
LQ-850: 4000 POH (duty 25%)
LQ-105O: 6000
POH (duty 25%)
200 million strokes/wire
1-8

REV.-A
Safety Approvals
Safety standards UL478 (U.S.A. version)
CSA22.2#l 54
VDE0806 (TUV) (Europe an version)
Radio Frequency
(RFI) FCC class B (U.S.A. version)
Interference VDE871 (self-certification) (Europe version)
1.2.2 Firmware Specifications
Control Code ESC/P-83
Printing Direction
Text Bidirectional with logic seeking
Bit-image Unidirectional
Character Code 8 bits
Character Set 96 ASCII and 13 international character sets
Family Roman: No. O
Sansserif: No. 1
Fon~
Roman: 10, 12, 15, Proportio~al
Sansserif: 10, 12, 15, Proportional
Draft: 10, 12, 15, Proportional
Printing Mode Printing quality
(Draft/LQ)
Character pitch (10, 12, 15 CPI or Proportional)
Condensed
Double-width
Double-height
Emphasized
Double-strike
Italic
Underlined
NOTE: A condensed mode for 15
CPI characters is not available.
Print Speed Refer to Table 1-11.
Print Columns Refer to Table 1-11.
1-9

REV.-A
Table 1-11. Printirm Mode
Print
Con-
Empha- Double Charac- Printing Speed Printable
Pitch
densed sized
Width ter Pitch
[CPS]
Columns
[cPI]
Draft LQ LQ-850
LQ-1 050
0000
10
220 73 80 136
1
5 110 36
40
68
1 0 10 110 73 80 136
1
5
55 36 40 68
1
x o 17.1 188 125 137 233
1
8.5 94 62 58 116
12
0 0 012 2648896 163
1
6
132 44 48 81
1 0 12 132 88 96 163
1
6
66 44 48 81
1 x o
20 220 146 160 272
1
10 110 73 80 136
15 00 0 15 330 110 120 204
1
@7<165 55 120 204
1 07.5 165 110 60 102
1
7.5 82 55 60 102
1 x x Ignored
o x o
8.6 —62 Max. 68 Max. 116
20 146 Min.
160
Min. 272
1
4.3 —
31 Max.
34 Max. 58
10 73
Min.
‘proportional
—80 Min. 136
1 x o17.1
—125
Max.
137
Max. 233
40 —293
Min. 320
Min. 544
1
8.6 —68
Max. 68
Max. 116
20 —146
Min. 160
Min.
272
0
x
o
12.8 —94 Max. 102
Max. 174
30—220 Min. 240 Min. 408
1
6.4 —47 Max. 51
Max. 87
‘roportiona I
15
—110
Min. 120 Min. 204
; uper/
1
x o
25.7 —188 Max. 204
Max. 174
subscript
60 —440 Min. 480
Min. 816
1
12.8 —94
Max. 102
Max.
87
30 —220
Min.
240 Min. 204
NOTES: 1. Max. means the value when the maximum width characters are printed.
2. Min. means the value when the minimum width characters are printed.
3. “-” means that LQ character set is automatically selected when proportional pitch is
specified.
1-10

REV.-A
Character Matrix
(Normal Character)
See Figure 1-6 and Table 1-12.
I
2
3
4
5
6
7
8
9
10
II
12
13
14
15
16
17
18
19
-20
21
22
— 23
24
1-
Ascender Area
R
A
Ascender Area (15P itch )
H
T
s
P
1--1
A
c
10
E
(a 2
Descender Area
Face Width(ol
)
Choracrer Width (CWI
(Superscript Character)
Pin Nos. 17 to 24 are not used when superscript
printing.
:[
2L
3E
4F
5T
6
7!j
-8P
9A
10 c
II E
12
13
14
15
16
—
R
A
H
T
s
P
A
c
E
—
(Subscript—Character)
Pin Nos. 1 to 8 are not used when subscript printing.
10 L
II E
12 F
13 T
14
1
15 S
16 p
~7 A
18 c
19 E
20
21
22
23
24
—-
R
I
G
H
T
s
P
A
c
E
Fig. 1-6. Character Matrix
1-11

REV.-A
Character Size See Table 1-12.
Table 1-12. Character Matrix and Character Size
Printing Mode Face Matrix HDD Character Size Unit
H. X V. (mm)
ESC Sfl
DRAFT, 10 pitch 9 X 23 120 1.9 X 3.2 120
DRAFT, 12 pitch 9 X 23 120 1.9 X 3.2 120
DRAFT, 15 pitch 9 X 16 120 1.0 ~2.3 120
DRAFT, 10 pitch, condensed
. . .
240 . . . . 240
DRAFT, 12 pitch, condensed
. . . 240 . . . 240
LQ, 10 pitch 29 X 23 360 2.0’ X 3.2 180
LQ, 12 pitch 29 X 23 3602.0 X 3.2 180
LQ, 15 pitch 15 X 16 360 1.0 X 2.3 180
LQ, 10 pitch, condensed . . 360 . . .
360
LQ, 12 pitch, condensed . . . 360 . . .
360
LQ, proportional max. 39 X 23 360 2.6 X 3.2 180
min. 18 X 23 360 1.0 X 3.2
LQ, proportional, condensed
. . . 360
. . .
360
. . .
360 . . .
LQ, proportional, super/subscript max. 28 X 16 360 1.8 X 2.3 . 180
min. 12 X 16 360 0.7 X 2.3
LQ, proportional, super/subscript,
. . .
360 . . .
condensed
360
. . . 360
. . .
NOTES :1. “HDD” means the Horizontal dot density, and the “Unit” shows the number of dots per inch.
2. “Face matrix” and “character size” indicate the size of maximum characters and this value
will be changed with condition of paper.
3. “Unit ESC sp” indicates the minimum length which is added to the right of the character
that can be specified with ESC sp control code.
4. “...” indicates that the character matrix is reformed by printer firmware. Character width
becomes half of a non-condensed character.
1-12