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EPSON
EPSON TERMINAL PRINTER
LQ-850/105O
TECHNICAL MANUAL
Y45499901 o-z
1 ! .,
,7
. . . . . . .
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 THAT THE 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 /.LP 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.
- 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 - Provides a general product overview, lists specifications,
and illustrates the main components of the printer.
--
Chapter 2 - Describes the theory of printer =peration.
Chapter 3 - Discusses the options
Chapter 4 - Includes a step-by-step guide for product disassembly,
assembly, and 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.
q The contents of this manual are subject to change without notice.
- iv -
i!
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
- vi -
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CHAPTER 1
GENERAL DESCRI PTION
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 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
1.4 DIP SWITCH AND JUMPER SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
1.5 SELF-TEST OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
.
1.6 HEXADECIMAL DUMP FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-20
1.7 PRINTER INITIALIZATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
1.7.1 Hardware initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
..
1.7.2 Software Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .1-21
.
1.8 BUZZER OPERATION AND ERROR CONDITIONS . . . . . . . . . . . . . . . . . . . . . 1-22
1.8.1 Buzzer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
1.8.2 Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
1.9 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 MONMA Board (Main Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
1.9.3 MONPS/MONPSE Board
(Power Supply Circuit Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-26
1.9.4 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
1.9.5 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-29
..
1 .i
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
..
1 -ii
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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
Zq-pin printhead, impact dot matrix printers The main
The LQ-850/ 1050 printers are multifunctional,
features of the these printers are:
.---.-- -
q Upward compatibility with the LQ-800/l 000
q A maximum print speed of 264 CPS in draft mode at 12 CPI and of 88 CpS in l-Q mode at 12 Cpl
q Direct selection of font, pitch, and normalfcondensed mode from the control panel
0 Automatic paper-10 adin9/ejectin9 function
q Low-noise acoustics
. Both 8-bit parallel and RS-232C serial interfaces
q Push and (optional) pull tractor feedin9
q 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)
q Optional interface for the EPSON 8100 series
q Optional low-priced, single-bin cut sheet feeder which cont~ins enveloPe feeding capability
1 lists optional units available, and Table 1-2
Figu~e 1-1 shows exterior views of the printers, Table 1-
detailed information) for the
lists the optional interface boards (refer to Chapter 3 for more
LQ-8!30/l 050.
Settings f o r Continuou5 Paper
.
Setting for Cut Sheet Paper LQ-1 050
LQ-850
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
#7339 Cut sheet feeder (single-bin) o
#7340 Cut sheet feeder (single-bin) o
#7753 Ribbon cartridge o
#7754 Ribbon cartridge o
#7400 Courier font-module o
#7401 Prestige font-module o
#7402 Script font-module o
#7403 OCR-B font-module o
Table 1-2. Optional Interface Boards
No. Name
#8143 New serial interface
#8 145 RS-232C current loop interface type II
#8148 Intelligent serial interface
#8 149 Intelligent serial interface type II
#8 149M Intelligent serial interface type III
#816 1 IEEE-488 interface
#8 165 Intelligent IEEE-488 interface
#8 172 32 K-byte buffer parallel interface
#81 72M 128K-byte buffer parallel interface
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REV.-A
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 m m ) .
T I o
m
fhz
:
!-
!
6
10 "--
I1
11
12
13
$
1'
15
16
17
18
19
20
21
22
23
4
Fig. 1-2. Printhead Pin Configuration
Feeding Method Friction feed
Tractor feed (push: standard, pull: optional)
NOTES: 1. When using friction feed:
q Use the paper tension unit.
q Do not use fanfold paper.
q Do not perform any reverse paper feed operations within the top 8.5 mm and bottom
22 mm area of the paper.
q Do not perform reverse feed beyond than 1/6 inches after the paper end has been
detected.
q Do not use multi-part, single-sheet forms.
2. When using tractor feed:
q Release the friction feed mechanism.
q Multiple copies for printing must be finished by pasting them together at the line or dots.
q Copy paper must be a carbonless multi-part paper.
a) When using push tractor feed:
q Use the paper tension unit.
1-3
REV.-A
q Do not perform reverse feeding for more than 1/6 inches.
q 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:
q Remove the paper tension unit and mount the pull tractor unit.
q Use the paper path when a single sheet is inserted.
c) When using push-pull tractor feed:
q Remove the paper tension unit and mount the pull tractor unit.
q Do not loosen the paper between the platen and the pull sprocket.
q Precisely the horizontal position of the pull sprocket and push tractor.
q 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
1/6" Line Spacing Continuous
Feeding Method
[ins/line] IIPS]
Friction w/o CSF 60 3.0
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] 1 8 2 - 2 5 7 ( 7 . 2 - 10.1") 1 8 2 - 3 6 4 ( 7 . 2 - 14.4")
Length [mm] 1 8 2 - 305 (7.2 - 12.0")
Thickness [mm] I 0.065 -0.10 (0.0025 - 0.004")
Weight [lb] I 14 - 2 2 ( 5 2 - 8 2 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 - 1 0 . 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 . 0 6 - 0.32 (0.0023 -0.01 2")
[mm]
Weight [lb] 1 sheet ..................14 - 22 (52 - 8 2 g/m2)
4 sheets ..................12 - 15 ( 4 0 - 58.2 g/m2) for each
Printable Area
-- Cut sheet paper See Figure 1-3. --
7.2 - 10,1*' (1 4.4)", 1 82- 257 (364) mm
9
1-
0.1 2", 3 mm_ ` 1- Printable area I -0.1 2", 3 mm
or more
1 or more
T 0.33",-8.5 mm
or more
D,
r T ABC
T
XYZ
n
t
1 a
Max. 12", b
305 I n 1'
1
e
a
r
e
a L ABC --l
XYZ
0.53", 3.5 mm
or more
_J_~
NOTES: 1. Values in the parentheses apply to the LQ-105O.
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 d
b.
* 2 Printable area J * 2
~
o 0
0 0
0 0
0
Printable ; 0
area 0
0
L-
0 0
0 ABC XYZ 1 0
-
1 0
0.35", 9 mm ; 0
or m o r e o 0
------------------ --- ------ -
; 0
0.35", 9 mm o 0
or more o 0
0 ABC XYZ 0
0 r 7 0
0 0
t 0
Printable o
o 0
area
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 . 1 6 - 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 1 2 1 - 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
1
Head adjustment Lever
Lever Position Paper Thickness [mm]
`orwardw ,, f=;tackwa'd
2nd 0.06 - 0.12 n
3rd 0.13 - 0 . 1 7
--
4th 0.18 -0.25
5th 0.26 - 0 . 3 2
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.)
W e i g h t See Table 1-8.
Table 1-8. Dimensions and Weight
Width [mm] Height [mm] Depth [mm] Weight [Kg]
LQ-850 430 142 360 10
LQ-1 050 605 142 360 12
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 - 2 6 4
Frequency range [Hz]
I 49.5 - 6 0 . 5
Rating current [A]
I 2
I 1
Insulation resistance [M ohm] min.
10
(between AC line and chassis)
Dielectric strength [V AC, rms]
1250 3750
(1 minute, between AC line and chassis)
Environmental Conditions Refer to Table 1-10.
Table 1-10. Environmental Conditions
Storage Operating
Temperature ["C]