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SQ - 870/1170 Service Manual
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EPSON TERMINAL PRINTER
SQ - 870/1170
4001225 REV.-A
o
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 1992 by SEIKO EPSON CORPORATION Nagano, Japan
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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/maintenance 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 PRODUCT 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 KP CHIPS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSING 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.
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PREFACE
This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of the SQ-870/l 170. 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 Chapter 3 Describes the theory of printer operation. Includes a step-by-step guide for product disassembly and assembly. Chapter 4 Chapter 5 Chapter 6 Includes a step-by-step guide for adjustment. Provides Epson-approved techniques for troubleshooting. Describes preventive maintenance techniques.
` The contents of this manual are subject to change without notice.
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REVISION SHEET
REVISON A DATE ISSUED
Feb. 21, 1992
CHANGE DOCUMENT
1st issue
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TABLE OF CONTENTS
CHAPTER 1. CHAPTER 2. CHAPTER 3. CHAPTER 4. CHAPTER 5. CHAPTER 6. APPENDIX GENERAL DESCRIPTION OPERATING PRINCIPLES DISASSEMBLY AND ASSEMBLY ADJUSTMENTS TROUBLESHOOTING MAINTENANCE
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CHAPTER 1 GENERAL DESCRIPTION
1.1
1.2
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 . 1.2.1 Hardware Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1-3 1.2.2 Firmware Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .1-9
1.3
INTERFACE Overflew....... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ..1-14 1.3.1 Parallel interface...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .........1 -14
1.4 1.5
CONTROL PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....1 -16 .. DIP SWITCHES AND JUMPER SETTING ......................................1-18 1.5.1 DIP Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18 . 1.5.2 Jumper Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19 ...
1.6
OPERATING INSTRUCTIONS... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1-20 . 1.6.1 1.6.2
1.6.3 1.6.4 1.6.5 1.6.6 1.6.7 1.6.8 1.6.9
Self.Test...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 1-20 Hexadecimal Dump Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1-20 Paper-out Detection and Forms Override Function . . . . . . . . 1-20 Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..............1 -20 Buzzer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 .. Printer initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ...........1 -21 .. Default Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .........1 -22 Sheet Loading and Sheet Ejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22 Tear-off Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1-23 .
1.6.10 Adjust Lever Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 1.6.11 Printhead Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ......1 -24 1.6.12 Ink Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-24 .... 1.6.13 Ink End Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24. . ... 1.6.14 Cover Open Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
1.7
MAIN COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25 1.7.1 C076 MAIN Board (Main Control Circuit Board) ............l-26 1.7.2 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......1 -27 1.7.3 C076 PSB/PSE Board (Power Supply Circuit Board) ....l-27 1.7.4 Printer Mechanism (M.471 O/476 O).....................................l.28 1.7.5 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......................1 -28 .....
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LIST OF FIGURES
Figure 1-1. Figure 1-2. Figure 1-3. .. Exterior View of the SQ-1 170 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2 Nozzle Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ......1-3 .... ... Release Lever Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
.... Figure 14. Label Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5 Figure 1-5. Figure 1-6. Figure 1-7. Figure 1-8. Figure 1-9. .. Printable Area for Cut Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6 . Printable Area for Continuous Papers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 .. Printer Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 ... Character Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13 Data Transmission Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
.... Figure 1-10. Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 .... Figure 1-11. Lever Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 .. Figure 1-12. SQ-1 170 Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-25 ... Figure 1-13. C076 MAIN Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-26 .... Figure 1-14. Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27 Figure 1-15. C076 PSB/PSE Board ...........................................................l -27 Figure 1-16. Model-4710/4760 Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 ..... Figure 1-17. Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
LIST OF TABLES
Table 1-1. Table 1-2. Table 1-3. Table 14. Table 1-5. Table 1-6. Table 1-7. Table 1-8. Table 1-9. Table 1-10. Table 1-1 f. Table 1-12. Table 1-13. Table 1-14. Table 1-15. Table 1-16. ... Interface Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Optional Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 .. Specifications for Cut Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 . Specifications for Continuous Papers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 .... Envelopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5 .. Labels Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5 .. Built in Bit-map Fonts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9 . Printing (Text Mode) . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1o ... Printing (Bit Image Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 . Character Matrix and Character Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12 Connector Pin Assignments and Signal Functions . . . . . 1-14 Settings for DIP Switch 1 (sw1)................................-.....1-18 Settings for DIP Switch 2 (SW2).......... . . . . . . . . . . . . . . . . . . . . . . . . . ..1-18 . International Character Set Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19 .... Page Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19 .... Lever Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
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1.1 FEATURES
The SQ-870/l 170 is a high speed 48-nozzle ink jet printer which provides advanced paper handling that is upper compatible with the TSQ-4800. The printer's main features are as follows:
q Use of ESC/P 2 control codes
Ability to print multi-point fonts Ability to receive and print raster graphic images Compatibility with the LQ\SQ series available on the market
q Printing speeds:
660 cps (draft, 12 cpi) 550 cps (draft, 10 cpi) 2 4 0 cps (LQ, 12 cpi) 2 0 0 cps (LQ, 10 cpi)
q Optional interface card q Clear, easy-to-read printing with standard EPSON fonts q Multiple fonts resident in the printer
2 scalable fonts (Roman, Saris Serif) 8 LQ bit-map fonts (Roman, Saris Serif, Courier, Prestige, Script, Script C, Orator, Orator-S) 1 draft bit-map font
q q q q
Control panel switch selection of fonts, pitch, and cut-sheet feeder (CSF) bin Optional tractor unit that can make up push-pull tractor Easy handling of cut sheets with the optional cut-sheet feeder Continuous Paper Two ways to insert continuous paper (front/rear path) Backout & loading Continuous paper can be used without removing CSF Standard tractor unit can be attached in two positions (front/rear)
q Cut Sheet
Two ways to insert cut sheets (front/top) Auto loading The SQ-870/l 170 is equipped with the standard EPSON 8-bit parallel interface and various interface options ensure compatibility with a wide variety of computers. Table 1-1 lists the interface options, Table 1-2 lists the optional units available for the SQ-870/l 170, and Figure 1-1 shows an exterior view of the SQ-870/l 170
Table 1-1. Interface Options
Model C82305 C82306 C82307 C82308 C82310 C82313 Descriptions Serial interface card (inch screw) Serial interface card (mini screw) 32KB serial interface card (inch screw) 32KB serial interface card (mini screw) 32KB parallel interface card 32KB IEEE-488 interface card
NOTE: Refer to the "Optional Interface Technical Manual" for details.
1-1
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Table 1-2. Optional Units 1
Model Descriptions / Single-bin cut-sheet feeder (80 columns] Single-bin cut-sheet feeder (136 columns) Second bin hopper (80 columns) I
I C80647 C80648 C80637
I I
IC80640 I S e c o n d binhopper(136 c o l u m n s ) C80023 C80024 SO2OO1O Tractor unit (80 columns) Tractor unit (136 columns) Ink cartridge
J
Figure 1-1. Exterior View of the S(2-870/1 170
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. e
1-2
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1.2 SPECIFICATIONS
This section provides specifications for the SQ-870/l 170 printer. 1.2.1
Hardware Specifications
On-demand type ink jet system 48 nozzles (48 X 1 diagonal) h
*i `g s Al \~1 A2 `2 A ~ (7.125°) 3 *
q
Printing method Nozzle configuration
1 `o a m ~
3
1/45" 47/45" h
Figure 1-2. Nozzle Configuration Feeding methods Friction feed (front/top) Push tractor feed (front/rear) Push-pull tractor feed (with optional tractor) (front/rear) NOTE: Do not perform pull tractor feed. Line spacing Paper insertion
Paper-feed speed
1/6 inch, 1/8, or programmable in units of 1/180 or 1/360 inch Friction feed -- Front or top side Tractor feed -- Front or rear side
Friction without CSF Friction with CSF Tractor 45 msec (1/6-inch feed) 4.5 inches per second (ips) (continuous) 49 msec (1/6-inch feed) 4.0 ips (continuous) 45 msec (1/6-inch feed) 4.5 ips (continuous)
NOTE: Following are the precautions for handling paper. 1
Friction feed (release lever in FRICTION POSITION).
q The paper must be loaded from the front or top entrance. q Do not use continuous paper. q Do not perform any reverse paper feeds within the top 8.5 mm (.34 in.) or bottom 22 mm (.87 in.) area. q
2 Do not perform reverse feeds greater than 1/6 inch after a paper end has been detected. Push tractor feed (release lever in REAR PUSH POSITION or FRONT PUSH POSITION).
q The paper must be loaded from the front or rear entrance. q Release the friction-feed mechanism. q
Do not perform reverse feeds greater than 1/6 inch. reverse feeding after the detection of a paper end.
1-3
q Since accuracy of paper feed cannot be assured after the paper end has been detected, do not perform
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3. Push-pull tractor feed (release lever in REAR PUSH POSITION or FRONT PUSH POSITION). q The paper must be loaded from the front or rear entrance. q Release the friction-feed mechanism. q Attach the pull tractor unit.
O Ensure that there is no slack in the paper between the platen and the pull tractor.
q Precisely adjust the horizontal position of the pull tractor and push tractor. q Paper for multiple copies must be spot pasted on both side of the perforation betvveen the tractor
holes.
q Do not perform reverse feeds greater than 1/6 inch. q Do not perform a reverse feed after the paper end has been detected.
Rear Push Position Release Position
\
Figure 1-3. Release Lever Positions
Paper specifications See tables 1-3, 1-4, 1-5, and 1-6
Table 1-3. Specifications for Cut Sheets Width
Length Thickness
182 mrn to 257 mm (7.2 in. to 10.1 in.) (80 columns)
182 mm to 420 mm (7.2 in. to 16.5 in.) (136 columns) 182 mm to 364 mm (7.2 in. to 14.3 in.) 0.065 mm to 0.10 mm (0.0025 in. to 0.0039 in.) 14 lb to 22 lb (52.3 g/m2 to 82 g/m2)
Weight Quality
Standard paper (photocopier paper, etc.)
Table 1-4. Specifications for Continuous Papers Width Quality Thickness Weight
I 101 mm to 254 mm (4.0 in. to 10.0 in.) (80 columns)
I 101 mm to 406 mm (4.0 in. to 16.0 in.) (136 columns]
Stan jard paper 0.065 mm to 0.10 mm (0.0025 in. to 0.0039 in.) 14 lb to 22 lb (52.3 g/m2 to 82 g/m2)
.: i..)
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Table 1-5. EnveIo~es
Size Thickness No. 6 166 mm X 92 mm (6.5 in. X 3.625 in.) No. 10240 mm X 104 mm (9.5 in. X 4.125 in.) 0.16 mm to 0.52 mm (0.0063 in. to 0.0197 in.) Differences in thickness within the printing area must be less than 0.25 mm (0.0098 in.) 12 lb to 24 lb (45 g/m2 to 91 g/m2) Bond paper, standard paper, airmail
[
Weight Quality
NOTES: q Printing on envelopes is available only at normal temperatures and only using top insertion. q Keep the longer side of the envelope horizontal during insertion. q Place the left edge of a No. 6 envelope at the sheet guide setting mark. Table 1-6. Labels Specifications Label size 2.5 in. X 0.94 in. 4.0 in. X 0.94 in. 4.0 in. X 1.44 in. These three kinds of labels are recommended. 0.22 mm (0.0079 in.) maximum
Copies Thickness
NOTES: q Printing on labels is available only at normal temperatures. q Labels must be of the continuous type. q Examples of labels AVERY CONTINUOUS FORM LABELS AVERY MINI-LINE LABELS
F;;::~?nch)r' `
23.8mm (0.94inch) L 36.5mm (1 .44inch)
Figure 1-4 Label Size
1-5
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182-257mm ~.2-10.lind?) : 60cdm
=
k~
13.5rnm (0.53-inti) or more
q 1: 80 columns: 3.0 mm (0.12 in.) or more when the width of paper is less than 229 mm (9 in.). ~~· 13 mm (0.51 in.) or more when the width of paper is 257 mm (10.1 in.).
136 columns: 3.0 mm (O. 12 in.) or more when the width of paper is less than 364 mm (1 4.3 in.) 25 mm (0.98 in.) or more when the width of paper is 420 mm (16.5 in.).
0
q.
NOTE: The paper feed accuracy can not be assured within the following area.
Front insertion: 47 mm (1 .85 in.) from the bottom edge of paper. Rear insertion: 26 mm (1 .02 in.) from the bottom edge of paper.
Figure 1-5. Printable Area for Cut Sheets
101 -254mm (4-10inch) : 60 columns
b q1 101 -406mm [4-16inch) : 136 columns *
q
Printable area max. 203mm (6. Oinch) : 60 columns 345mm (13.6inch): 136 columns
0 0 0 0 0 0 Printable 0 0 area 0 0 0 XYZ: 0 ABC - 1 o L 0 o 0 9mm or more 0 0 0 (0.35inch) 0 0 r - - - - - - - - - - - - - - - - o ? 0 9mm or more : 0 (0.35inch) o 0 : 0 XYzo o ABC o 1 0 -fo Printable : 0
I
4-
c..,
>$'
r
q 1: 80 columns:
13 mm (0.51 in.) or more when the 101 mm (4.0 in.) to 241 mm (9.5 in.) width paper is used. 26 mm (1 .02 in.) or more when the 254 mm (1 O in.) width paper is used.
136 columns: 13 mm (0.51 in.) or more when the "101 mm (4.0 in.) to 377.8 mm (1 4.87 in.) width paper is used. 15 mm (0.59 in.) or more when the 381 mm (15 in.) to 406 mm (16 in.) width paper is used.
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1-6
Figure 1-6. Printable Area for Continuous Papers
REV.-A Ink cartridge Type: Color: Ink capacity: Exclusive ink cartridge Black 105 to 115 cc Draft: Ink life: Storage
Print capacity (depending on the cleaning operation): 6 million characters Letter Quality: 3 million characters 2 years from production date temperature: 30 to 40 degrees C (22 to 104 degrees F) -Storage (within a month at 40 degrees C (104 degrees F)) 30 to 60 degrees C (22 to 140 degrees F) -Transit (within a month at 40 degrees C (104 degrees F ) ) (within 120 hours at 60 degrees C (140 degrees F)) Dimension of cartridge: 24.8 mm (W) X 138 mm (D) X 99.3 mm (H) (0.98 inch X 5.43 inch X 3.91 inch)
NOTES: q Ink will be frozen under 7 degrees C (19 degrees F) environment, however it will be usable after placing
it at room temperature. (It will take approx2.5 hours until melting at 25 degrees C (77 degrees F).)
q Do not use the ink cartridge which has been stored longer than the ink life.
Reliability Mean cycles between failures (MCBF) 5 million lines (excluding printhead) Mean time between failures (MTBF) 4000 power on hours (POH) (25% duty)(SQ-870) 6000 power on hours (POH) (25'%. duty)(SQ-1 170) Life of printhead Safety approvals 4000 million dots/nozzle Safety standardsULl 950 with D3 (U. Aversion) CSA22.2#220 EN 60950 (TUV) (European version) Radio frequency interference (RFI) FCC class B (U. Aversion) VDE0871 version) Electrical specifications 120 V version Rated voltage Input voltage range Rated frequency range Input frequency range Rated current Power consumption 120 VAC 103.5 to 132 VAC 50 to 60 Hz 49.5 to 60.5 Hz 0.6 A Approx. 30 W (SQ-870) Approx. 30 W (SQ-1 1 7 0 ) (during a self-test in draft mode, 10 cpi) Insulation resistance 10 Megohms minimum (at 500 VDC between AC line and chassis). (self-certification) (European
1-7
REV.-A Dielectric strength 1 0 0 0 VAC rms 1 minute or 1200 VAC rms 1 second (between AC line and chassis) 220/240 version Rated voltage Input voltage range Rated frequency range Input frequency range Rated current Power consumption 220 to 240 VAC 198 to 264 VAC 50 to 60 Hz 49.5 to 60.5 Hz 0.4 A Approx. 30 W (SQ-870) Approx. 30 W (SQ-1 170) (during a self-test in draft mode, 10 cpi) Insulation resistance Dielectric Strength 10 Megohms minimum (at 500 VDC between AC line and chassis). 1 2 5 0 VAC rms 1 minute or 1500 VAC rms 1 second (between AC line and chassis) Environmental conditions Humidity Temperature 10 to 35 degrees C (50 to 95 degrees F) operating 30 to 60 degrees C (22 to 140 degrees F) -in shipment container 20 to 80 % RH - operating 5 to 85 % RH - storage .,.-:. , ., "'- , ,, o
NOTE: Figure 1-5 shows the operating environment.
I
Temperature ("c) Figure
1-7. Printer Operating Environment
1 G, within 1 ms - operating 2 G, within 1 ms - storage 0.25 G, 55 Hz, max - operating 0.50 G, 55 Hz, max - storage 9.5 Kg, approx. (2 1.0 pounds, approx.) (SQ-870) 12.2 Kg, approx. (27.0 pounds, approx.) (SQ-1 170) 462 mm (width) X 325 mm (depth) X 205 mm (height) 1 8 . 2 in(width) X 12.8 in(depth) X 8.1 in(height) (SQ-870) 657 mm (width) X 325 mm (depth) X 205 mm (height) 2 5 . 9 in(width) X 12.8 in(depth) X 8.1 in(height) (SQ-1 1 7 0 ) 1-8
Resistance to shock Resistance to vibration Physical specifications Weight Dimensions
REV.-A
1.2.2 Firmware Specifications
Control code Printing direction Input data buffer Character code Character tables ES C/PTM level 2 (EPSON standard code for printers) Bi-directional with logic seeking (text printing) Uni-directional (bit-image printing) 16KB (Standard) 128KB (factory option) 8 bits Italic character table, PC 437, PC 850, PC 860, PC 863, PC 865 (PC indicates character table for personal computer) Fonts and pitches Bit-map fonts Scalable fonts See table 1-7 EPSON Roman EPSON Saris-serif 8 pt to 32 pt 8 pt to 32 pt
Table 1-7. Built in Bit-ma~ Fonts
I
EPSON Roman EPSON Saris-serif EPSON Courier EPSON Prestige EPSON Script EPSON Script-C EPSON Orator EPSON Orator-S EPSON DRAFT
I Family o 1 2 3 4 9 7 8 ..-
No.
I
10
CPI I 0 0 0 0 0 0 0 0 0
12
CPI I 0 0 0 0 0 0 . " 0
15
CPI I 0 0 0 0 0 0 x x 0
Proportional 0 0
q
I
q
q
. .
q
xx
0-- R e s i d e n t , -Desired pitch is made by software using selected font x -print Roman 15 CPI xx -- Print LQ proportional font selected by ESC k Printing modes Selection and mixture of the following modes are allowed, excluding 15 cpi condensed mode: O Print quality (draft/letter quality) O Character pitch (1 O, 12, 15, or proportional) O Condensed O Double-width O Double-height O Emphasized O Double-strike O Italic O Underlined O Double-underlined O Overscore O Strike-through O Outline O Shadow 1-9
REV.-A Printing speed Printing columns Character matrix Character size See Tables 1-8 and 1-9. See Table 1-8. See Table 1-10. See Table 1-10. Table 1-8. Printing (Text Mode) Print
Pitch 10
Condensed 0 0 0
Emphasized 0 0 1
Double width 80 0 1 0 1 o 80 40 80 40 137 68 96 48 96 48 160 80 120 60 120 60
Printable Columns
COi. 136
Col.
Charactar Pitch (cpi) 10 5 10 , 5 17.1 8.5 12 6 12 6 20 10 15 7.5 15 7.5
Printing Speed (Cps) Draft 550 275 400 200 684 342 660 330 480 240 800 400 825 412 600 300 LQ 200 100 200 100 342 171 240 120 240 120 400 200 300 150 300 150
136 68 136 68 233 116 163 81 163 81 272 136 204 102 204 102
0
1
1
x x 0 0 1 1 x x 0
1
12 0 0 0 0 1
1
0 1 0 1 o 1 0 1 0 1 x
;, ? e
1
15 0
0
0 0 1
0
1 1 x
Cannot be condensed
CPI:
CPS: LQ:
characters per inch characters per second letter quality
('J
,<..
~
1-1o
REV.-A
Table 1-9. Printing (Bit Image Mode)
Dot
Pins 8
m 0 1 2 3 4
6
Density (DPI) 60 120 120 240 80
90 6 0 120 90 180 360 180 360 360
Adjacent Dot Printing Yes Yes No No Yes
Yes Yes Yes Yes Yes No Yes No Yes
256 X n2 + nl 80 Columns 480 960 960 1920 640
720 480 960 720 1440 2880 1440 2880 2880
136 Columns 816 1632 1632 3264 1088
1224 816 1632 1224 2448 4896 2448 4896 4896
Printing Speed (IPS) 55 20 20 20
20 55 55 20 55 20 20 20 20 20
24
32 33 38 39 40
48
71 72 73
DPI: IPS:
dots per inch inches per second
1-11
REV.-A Table 1-10. Character Matrix and Character Size Printing Mode ;Draft, 10 pitch Draft, 12 pitch
Draft, 15 pitch Draft, 17 pitch Draft, 20 pitch LQ, 10 pitch LQ, 12 pitch LQ, 15 pitch LQ, 17 pitch LQ, 20 pitch LQ, proportional LQ, proportional, super/subscript
, Unit ESC sp 120 120
120 120 120 180 180 180 180 180 180 180
Face Matrix 15 x 44 13 x 44
11 X 32 15 x 44 13 x 44 31 x 22 27 X 22 22 X 16 16 X 44 14 x 44 Max. 37 X 44 Min. 18 X 44 Max. 28 X 32 Min. 12 X 32
HOD 180 180
180 360 360 360 360 360 360 360 360 360 360 360
Character Size 2.1 x 3.1 1.s
X
*
3.1
1.6 X 2.3 1.1 x 3.1 0.9 x 3.1 2.2 x 3.1 1.9 x 3.1 1.6 X 2.3 1.1 x 3.1 1.0 x 3.1 2.6 X 3.1 1.() x 3.1 1.8 X 2.3 0.7 X 2.3
@
NOTES:
q
HDD is horizontal dot density in dots per inch. Face matrix and character size indicate the maximum size of a character. This value is dependent on paper, etc. Unit ESC sp (which also can be sent as unit, followed by the character string CHR$(&h20)), indicates the minimum length to be added to the right of the character specified in the ESC
SP
q
q
control code.
..; , @
1-12
REV.-A
(Normal character) 1~ 2 Ascender area 3 4 5 6 7 R . k F / T / /s/ . . 39 40 41 . . 46 47 (aO) Descender area (a2) : c E k /y/ // s : c E . . . 45 46 47 48 (Sub-script character) From dot No. 1 to 16 are not I while subscri~t txinting. ,. --
17 18 1: . . .
48
L
L
Character width (CW) 4
(Super-script character) From dot No. 33 to 48 are not used while superscript printing. -- ; 3 4 . . L
. . 29 30 31 32
Figure 1-8. Character Matrix
1-13
REV.-A
1.3 INTERFACE OVERVIEW
The printer has a parallel interface with the specifications described below.
1.3.1 Parallel Interface
Specifications for the 8-bit parallel interface are as follows: Data format Synchronization Handshaking Signal level Adaptable connector Data transmission timing 8-bit parallel STROBE signal BUSY and ACKNLG signal ITL-compatible 57-30360 (Amphenol) See Figure 1-9. It ,/ // or equivalent
BUSY [ ACKNLG DATA STROBE o.5#s
min. Figure
4
o.5/.ls
min.
o.5/ls
min.
511s
WP
5ps
typ. `
1-9. Data Transmission Timing
Table 1-11 shows the connector pin assignments and signal functions of the 8-bit parallel interface.
Table 1-11. Connector Pin Assignments and Signal Functions Pin No. 1 Signal Name
STROBE
Return Pin No.
19
Dir.
IN
Functional Description
STROBE pulse to read the input data. Pulse width must be more than 0.5Ks. Input data is latched at falling edge of this signal. Parallel input data to the printer. HIGH level means " 1". LOW level means "O".
1
0
,-.' , . .
2 3 4 5 6 7 8 9 10
DATA 1 DATA 2 DATA 3 DATA 4 DATA 5 DATA 6 DATA 7 DATA 8 ACKNLG
20 21 22 23 24 25 26 27 28
IN IN IN IN IN IN IN IN OUT
This pulse indicates data has been received and the printer is ready to accept more data. Pulse width is approximately 1 Ips. HIGH indicates the printer cannot accept more data. HIGH indicates paper out. This signal is effective only when the ERROR signal is LOW, Always HIGH output (Pulled up to +5V through a 3.3K ohm resistor.)
11 12 13
BUSY PE
29 30
OUT OUT OUT
SLCT
1-14
Table 1-11. Connector Pin Assignments and Signal Functions (Cont.)
Pin No. 14 Signal Name AUTOFEED-XT Return Pin No. -Dir. IN Functional Description If LOW when the printer is initialized, the printer
automatically performs a line feed upon input of the CR code (Auto LF). 15 16 Not used.
GND Chassis GND ..
.--
Ground for twisted-pair grounding. Chassis ground level of printer. Not used.
17 18 19 to 30 31
GND I NIT 16 IN OUT
-..
Ground for twisted-pair grounding. Pulse (width: 50ws, min., active LOW) input for printer
initialization.
32 33 34 35
ERROR GND
LOW indicates an error has occurred in the printer.
Ground for twisted-pair grounding. Not used.
OUT
Always HIGH. (Pulled up to +5V through 3.3K ohm resistor.) If LOW when the printer is initialized, DC l/DC3 control is disabled.
36
SLCT-IN
--
IN
NOTES: 1. "Dir." indicates the direction of the signal flow as viewed from the printer. 2. "Return Pin No." denotes a twisted-pair return line.
3. The cable used must be shielded to prevent noise. 4. All interface conditions are based on TTL levels. Both the rise and fall times of all signals must be less than 0.2Ks. 5. The AUTOFEED-XT signal can be set to LOW by DIP switch 2-4. 6. The SELECT-IN signal can be set to LOW by jumper 1. 7. Printing tests, including those of the interface circuits, can be performed without using external equipment by setting DATA 1 -DATA 8 pins to the STROBE signal.
1-15
REV.-A
1.4
CONTROL PANEL
On the control panel are: 10 non-lock type buttons, and 24 indicators.
k ---- I Lom I -!. I
0 111--
Figure 1-10. Control Panel BUTTONS
(1) PAUSE Button This button controls printer action. Pressing the button toggles the printer between PAUSE condition (no printing, no paper feeding, or no data acception) (2) FORM FEED Button Advances the paper to the next top of from position. This switch is also used for the micro feed function. and RUNNING.
(3) LINE FEED Button Advances the paper by one line ( 1/6 inch)By pressing this switch more than 0.5 second, the paper is fed continuously until releasing this switch. This switch is also used for the micro feed function. (4) LOAD/EJECT Button Pushing this switch loads the paper when paper-out condition is detectedAnd ejects the paper when out of paper condition is not detected as in the Forms Override function. (5) TEAR-OFF/BIN l/BIN 2 Button In tractor-feed mode, pressing this button advances continuous paper to the tear-off position, and the TEAR-OFF indicator is Iitln friction-feed mode, pressing this button toggles between bin 1 and bin 2, and the selected BIN indicator is lit. (6) MICRO FEED Button Selects or cancels the micro feed function. When this function is enabled, the MICRO FEED indicator is lit. In the micro feed mode, the LINE FEED button is used to feed the paper forward, and the FORM FEED button is used to feed the paper backward. Paper feed performed by this micro feed function does not affect the page position control. And this func!ion is also used to adjust the paper loading position and to adjust the continuous paper to meet the tear off edge. (7) FONT Button Pressing this button selects a font, and pressing it continuously selects the following ones in sequence. The `ONT LED indicates the currently selected font.
. ~. c"
.')
1-16
REV.-A (8) PITCH Button Pushing this switch once selects the character pitch. And holding this button down selects the following ones in sequence. PITCH indicators indicate the currently selected character pitch.
(9) RESET Button
Holding this button down more than 0.45 second, the input data buffer is cleared and the printer initialized by software as ESC Cl?. (10) CLEANING Button Holding this button down more than 0.5 second, the print head cleaning is performed. This button is only effective in the PAUSE condition. The CLEANING button is located inside the DIP switch cover.
INDICATORS (1) POWER (green) Lit when the printer's power switch is on, and AC power is supplied.
(2) PAUSE (orange) Lit when the printer is in PAUSE mode (no printing, no paper feed, or no data accepting). (3) DATA (orange) Lit when the printer has received data from the host machine.
(4) PAPER-OUT (red)
Lit when the paper-out detector detects no paper. Refer to Section 1.6.3, Paper-out Detection and Forms Override Function. (5) INK END (red) Lit when the printer detects the ink empty condition. (6) MICRO FEED (orange) Lit when the micro feed function is enabled. (7) TEAR-OFF (orange) Lit when the sheet is advanced to the tear-off position. (8) BIN 1 (green) Lit when bin 1 is selected. (9) BIN 2 (green) Lit when bin 2 is selected. (1 O) FONT (green) --Draft, Courier, Roman, Saris Serif, Prestige, Script, Script C, Orator, Orator-S These indicators show the currently selected font. (1 1) PITCH (green) --10 CPI, 12 CPI, 15 CPI, 17 CPI, 20 CPI, PS These indicators show the currently selected pitch.
1-17
REV.-A
1.5 DIP SWITCHES AND JUMPER SETTING
This section describes the DIP switch selections and jumper setting for the SQ-870/l 170 printer.
1.5.1 DIP Switch Settings
The two DIP switch banks for the printer, located on the control panel, are used to set various print conditions as shown in tables 1-12 through 1-15. (Note that the status of the DIP switches is read only at power on or upon receipt of the INIT signal.)
Table 1.12. Settings for DIP Switch 1 (SW1)
No. 1 2 3 4 5 6 7 8
Description
International character set and PC selection Character table selection Graphic print direction Not Used
ON
See Table 1-14 Graphic Unidir.
OFF
Factory
Setting ON ON ON
Italic Bidir.
OFF OFF OFF OFF OFF
Table 1-13. Settings for DIP Switch 2 (SW2) No. 1
2
Description
ON
See Table 1-15
I
OFF
Factory Setting
I
I
!
Page length of continuous paper
[
I
OFF OFF OFF
I I I
3
4
1 inch skip for continuous paper
1
ON
I
OFF
,
~ Auto LF
ON
OFF
OFF
=. @
1-18
REV.-A
Table 1-14. international Character Set Selection 1-1 ON ON ON ON OFF OFF OFF OFF 1-2 ON ON OFF OFF ON ON OFF
OFF
1-3 ON OFF ON OFF ON OFF ON
OFF
Country Us. France Germany U.K. Denmark 1 Sweden Italy
Spain 1
Pc 437 850 860 863 865 (437) (437)
(437)
When SW 1-4 is ON,
L
2-1 OFF ON OFF ON 2-2 OFF OFF ON ON 1.5.2 Jumper Setting
~ If italic table was selected by ESC t O, country setting becomes U.S. When SW 1-4 is OFF, if graphic table was selected by ESC t 1, PC becomes 437.
Table 1-15. Page Length Page Length 11 inches 12 inches 8.5 inches 70/6 inches
If Jumper 1 is connected to GND, the SLCT-IN signal is fixed to LOW and DC l/DC3 control is ignored.
1-19
REV.-A
1.6 OPERATING INSTRUCTIONS
This section describes the self-test and hexadecimal dump functions as well as the error states, printer initialization, and buzzer operation.
*
1.6.1 Self-Test
To run the self-test using draft mode, turn the printer on while pressing the LINE FEED button. To run the self-test using the letter quality (LO) mode, turn the printer on while pressing the FORM FEED button. You can stop or start self-test printing by pressing the PAUSE button. When you are satisfied with the self-test, stop the printing by pressing the PAUSE button and turn the printer off. The firmware revision number is printed on the first line of the self-test, followed by the current DIP switch settings.
1.6.2 Hexadecimal Dump Function
To put the printer in hexdump mode, power it on while pressing both the LINE FEED and FORM FEED buttons. In hexdump mode, the printer prints out the hexadecimal representation of the input data, along with the corresponding ASCII characters. This function is useful for checking the data the printer has received from the host. If input data is a control code rather than a character code, a period (.) is printed in the ASCII column.
o
"i" ,,
1.6.3 Paper-out Detection and Forms Override Function
When the paper-out detector detects a paper-out condition, the printer enters the PAUSE mode with the following status. PAPER OUT indicator lit BUSY signal becomes HIGH ERROR signal becomes LOW PE signal becomes HIGH In the PAUSE mode, you can perform the "Forms Override" function by pressing the PAUSE button, or continue the printing operation by pressing the PAUSE button after loading new paper. In the forms override function, the printer ignores the paper-out condition temporarily and prints additional lines beyond the bottom line specified for the page. Once the "Forms Override" function is performed, the paper-out detection will not be enabled until paper is loaded.
I
c..
."..
.,
`) :
1.6.4 Error Conditions
If the following conditions are detected, the printer recognizes them as errors and enters the error mode.
q Paper-out
Paper-out is detected after performing paper loading operation. . Ink end Ink end condition is detected. Perform 200 lines of printing or remove the ink cartridge.
1-20
REV.-A
q Cover open
The printer lid is opened.
q Fatal errors
In the following cases, the printer recognizes them as fatal errors and enters the fatal error mode. The fatal error condition cannot be recovered until turning the power off.
q Carriage does not move correctly q Control circuit cannot work correctly
When the error condition is detected, the printer automatically enters `PAUSE' mode and outputs appropriate interface signal. When parallel interface is selected, the following interface signals are outputted to indicate the error and to stop data transmission.
q BUSY signal becomes HIGH q ERROR signal becomes LOW q Output no ACKNLG pulse q PE signal becomes HIGH (only paper out error)
1.6.5 Buzzer Operation
The buzzer sounds under the following conditions:
q A paper-out error is detected (beeps 3 times for 0.1 second respectively, with 0.1 second intervals). q Ink end error is detected (beeps 5 times for 0.1 second respectively, with 0.1 second intervals). q Cover open error is detected (beeps 5 times for 0.1 second respectively, with 0.1 second intervals). q Fatal error is detected (beeps 5 times for 0.5 second respectively, with 0.5 second intervals). q When panel setting is accepted (beeps 1 time for 0.1 second).
1.6.6 Printer Initialization
There are three initialization methods: hardware initialization, software initialization, and panel initialization. (1) Hardware initialization This type of initialization takes place when the printer power button is turned on with the AC power cord plugged in or when the INIT signal is received. When the printer is initialized, it performs the following actions: (a) Initialize printer mechanism. (b) Clears input data buffer. (c) Clears downloaded character set. (d) Clears print buffer. (e) Returns printer settings to their default values.
1-21
REV.-A (2) Software initialization Input of the ESC C2 command also initialize the printer. Printer initialization by ESC C? code does not perform functions (d) or(e) above. The settings changed by the last SelecType operation are maintained.
(3) Panel initialization
This printer can be initialized by pressing the RESET button on the front panel. When the printer is initialized in this method, the functions (b), (d) and (e) above are not performed. The settings changed by the last SelecType operation are maintained.
1.6.7 Default Values
When the printer is initialized, the following default values are set: Page position Left and right margins Line spacing Vertical tabs Horizontal tabs Family number of type style Download characters The current paper position becomes the top-of-form position Released 1/6 inch Cleared Every 8 characters (relative) Last font selected from the panel Kept - software initialization Cleared - hardware initialization Character spacing Printing effects Printer condition Last pitch selected from the panel Cleared Not PAUSE
Q
,F . ,.
1.6.8 Sheet Loading and Sheet Ejection
The release lever has a disengage capability of tractor unit drive mechanism. Therefore, this printer provides some improved paper handling in combination with the release lever.
(a) Automatic cut sheet loading without cut sheet feeder insertion).
. . ,-~. G Change the release lever to friction feed position and put'a cut sheet with the paper guide (rear or front `"'
A few seconds laster, the cut sheet is automatically loaded to the top-of-form position.
(b) Automatic cut sheet loading & ejection with cut sheet feeder Change the release lever to the friction feed position and the put cut sheets into the hopper of the cut sheet feeder. Pushing LOAD/EJECT button loads a sheet to the top-of-form positionlf paper out is detected before printing starts, a sheet is automatically loaded to the top-of-form position. (c) Continuous paper loading & ejection (back-out) Change the release lever to the rear push position or front push position, and set the continuous paper into the tractor unit. Pushing LOAD/EJECT button loads the paper automatically to the top-of-form position. If paper out is detected before printing statis, the paper is automatically loaded to the top-of-form position. F.< if LOAD/EJECT button is pushed when continuous paper is loaded, the paper is ejected backward too "" 1-22
the push tractor unit.
REV.-A When the paper is at the top-of-form position, the loading position is adjustable by using the `MICRO FEED' function. In the `MICRO FEED' function, pushing the LINE FEED button pushes the paper forward, and pushing the FORM FEED button pulls the paper backward. The adjusted loading position is stored into the memory and remains to be effective until the power is turned off. But the adjusted loading position of the continuous paper is memorized into nonvolatile RAM, so it remains effective even if the power is turned off.
1.6.9 Tear-off Function
By pressing the TEAR OFF button when the tractor feed is selected, the paper is advanced to the tear off position and `TEAR OFF' indicator is lit. In this condition (tear off condition), the tear off position is adjustable by using the `MICRO FEED' functionln the `MICRO FEED' function, pushing the LINE FEED button pushes the paper forward, and pushing the FORM FEED button pulls the paper backward. The adjusted position is memorized into the nonvolatile RAM and remains effective even if the power is turned off. If necessary to cancel this function, press the TEAR OFF button again or press the PAUSE button or send subsequent data to the printer. Then the paper is fed back to the top-of-form position.
1.6.10 Adjust Lever Operation
The adjust lever must be set to the proper position according to the type of paper used.
Table 1-16. Lever Positions Lever Position Front side Paper Type
Envelope
I Label Rear side Cut sheet
I
I
I
I Continuous paper I
Figure 1-11 Lever Positions
1-23
REV.-A
1.6.11
Printhead Protection
To keep the print quality, several kinds of printhead cleaning functions are performed automatically. (1) Power on cleaning Performed at power on when `(4) Cleaning' as defined below is not required. It takes about several seconds. (2) Capping In the following cases the printhead is capped. It takes about a second.
q Printing is stopped about 3 seconds. q Entering the PAUSE condition.
(3) Refresh nozzles Performed about every 15 seconds during printing. It takes less than a second. (4) Cleaning In the following cases the printhead cleaning is performed and it takes about 20 seconds.
q Turning the power on when the printhead has not been capped. q Turning the power on more than 7 days after the last cleaning.
. Pressing the CLEANING button.
1.6.12 Ink Charge
Install the ink cartridge to the printer and turn the printer power on while pressing the CLEANING switch down. The `Ink Charge' function is started. It takes about 3 minutes to complete this functionlt is needed only at the first time the new printer is used.
1.6.13 Ink End Detection
If ink end sensor detects ink end condition, `INK END' indicator blinks performing 200 lines of printing, and the printer enters the ink end condition. ('INK END' indicator is lit.) If ink cartridge is removed, `INK END' indicator is lit and the printer enters the ink end condition immediately. 1.6.14
Cover Open Detection
Cover open detector is installed to stop the printing whenever the printer cover is opened. If cover open is detected, the printer enters the cover open error condition.
CAUTION:
Don't open the printer cover while printing.
1-24
REV.-A
1.7 MAIN COMPONENTS
The main components of the SQ-870/l 170 printer are designed for easy removal and replacement to facilitate maintenance and repair of the printer. The main components are:
1) C076 MAIN board:
2) Control panel unit 3) C076 PSB/PSE 4) M-47 10/4760: board:
the main control board; the CPU on this board controls all main functions. the power supply board.
the printer mechanism.
C076 PSB/PSE Board
\
C076 MAIN Board
- Printer Mechanism M-4760
[
n
)4
1 ,
Figure 1-12. SQ-1 170 Component Layout
1-25
REV.-A
1.7.1 C076 MAIN Board (Main Control Circuit Board)
The C076 MAIN board is the main board in the printer, and contains a logic circuit and printer mechanism driver circuit. The KPD70325 (location: IC5) is used, and the following memories and gate arrays are assigned in the 1 M byte memory space. Memories 5 12K\l M bits program ROM 1 M bits PS-RAM 8M\4M\2M/l M bits mask ROM (C.G) Gate Arrays Memory management unit (E05A65) Motor control unit (E05A48) Driver CR motor (DC motor) driver (SLA4391) PM motor (DC motor) driver (SDH03) PF motor (Stepping motor) driver (STK67 12B) Printhead driver (MPD 16322) :Ic17 :IC16 :Ic 11 :lC8/9 :Ic12 :Iclo :Ic14 :IC 1 9 / 2 2 / 2 3 :lC3/4/24
.,; ,.. . c'\
Others EEPROM Reset IC (MB3771) Reset IC (PST529C) Switching Regulator (TL494) Lithium battew
:IC2 :IC21 :IC7 :IC20 :BAT 1
A lithium battery in the battery circuit backs up the head cleaning timer while the printer power is off.
GA E05A48 (Iclo) \ ~o CPU PPD70325 P-ROM 5 12K (IC14) (IC5) I 00 u n = o'
IJOQ
000
I
`
n `N `L
II ~11 II 1--1
I b
0
,~i 4-
1 M PS-RAM (IC19)
(IC22))
Mu
u "p-RAM
BAT1/
GA L05A65 (1C12)
Figure 1-13. C076 MAIN Board
1-26
REV.-A
1.7.2 Control Panel
The Control Panel is, which includes the indicator LEDs, switches, and DIP switches.
Figure 1-14. Control Panal
1.7.3 C076 PSB/PSE Board (Power Supply Circuit Board)
The power supply unit consists of a switching regulator circuit, which converts the AC line voltage to the DC voltages (for example, + 35V and + 5V) used by the printer. The C076 PSB board is 120V input type, and the C076 PSE board is 220/240V input type.
u
o
0
P I
Figure 1-15. C076 PSB/PSE Board
1-27
REV.-A
1.7.4 Printer Mechanism (M-4710/4760)
The M-47 10/4760 printer mechanism was developed specifically for SQ-870/l 170 printer. Included the components are a carriage motor, carriage mechanism, paper-feed motor, paper-feed mechanism, TE motor, top edge holding mechanism, pump motor, pump mechanism, printhead, and sensors. This printer mechanism allows three ways of paper insertion.
o-..+:, .
,'
Figure 1-16. Model-4710/4760 Printer Mechanism
1.7.5 Housing
The LQ-870/l 170 housing consists of the upper, lower, and front cases. The front case houses the control panel. The lower case contains the printer mechanism, the main control circuit board, and power supply circuit board.
Figure 1-17. Housing
1-28
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CHAPTER 2 OPERATION PRINCIPLES
2.1 OPERATING PRINCIPLES OF PRINTER MECHANISM..............2-1 2.1.1. Printhead Mechanism .............................................................2.2
2.1.2. Carriage Mechanism ...............................................................2.4 2.1.3. Paper Feed Mechanism ..........................................................2.6 2.1.3.1 Paper Feeding Mechanism.....................................2-6 2.1.3.2 Release Lever Operation.........................................2.8 2.1.3.3 Paper Insertion entrance ........................................2.l O 2.1.3.4 Top Edge Holder Mechanism Operation ...........2 -13 2.1.4 Ink Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ..............2 -14 2.1.4.1 Pump Motor ................................................................2.l 5 2.1.4.2 Pump Mechanism .....................................................2.l 6 2.1.4.3 Cap Mechanism .........................................................2.l 7 2.1.4.4 Cleaning Mechanism and Carriage Lock Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..2-18 . 2.1.4.5 Ink Cartridge and Ink End Sensor Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-20 . 2.1.4.6 Wasted Ink Drain Tank...........................................2.2l 2.1.4.7 Operational Sequence of Ink Mechanism ........2 -22 2.1.5 Case Open Interlock Switch..................................................2.26 2.2 OPERATING PRINCIPLES OF POWER SUPPLY CIRCUITRY..2-27 2.2.1 Voltage Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ...2-27 .. 2.2.2 Operating Principles of Power Supply Circuitry ............2 -27 2.3 OPERATING PRINCIPLES OF CONTROL CIRCUITRY ...............2 -29 2.3.1 2.3.2 2.3.3 2.3.4 2.3.5 2.3.6 2.3.7 2.3.8 2.3.9 Control Circuitry Overview ...................................m.........mm.mmm.2.29 Reset Circuit ...............................................................................2-31 Detection Circuit .......................................................................2.31 Paper Feed Motor Drive Circuit ...........................................2-32 Carriage Motor Drive Circuit.................................................2.33 Printhead Drive Circuit ...........................................................2.34 Pump Motor Drive Circuit ......................................................2.36 TE Motor Drive Circuit ............................................................2.37 Timer Circuit and Backup Circuit ........................................2.37
2.3.10 EEPROM Control Circuit.........................................................2.38
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LIST OF FIGURES
Figure 2-1. Block Diagram of Printer Mechanism -Model .... -47 10/4760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1 Figure 2-2. Figure 2-3. Figure 2-4. Figure 2-5. Figure 2-6. Internal Structure of Printhead ..........................................2-2 ... Structure of a Nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2 ... Printing Principle (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3 ... Printing Principles (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3 ... Printing Principles (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
... Figure 2-7. Carriage Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Figure 2-8. Figure 2-9. ... Adjustment of Platen Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Friction Feed Method .............................................................2.6
... Figure 2-10. Push Tractor Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7 ... Figure 2-11. Push-Pull Tractor Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 Figure 2-12. Moving the Release Lever ....................................................2.8 Figure 2-13. Arrangement of Gears in Friction Feed (or Full Release) ........................................................................2.9 Figure 2-14. Arrangement of Gears in Front Push Tractor Feed.....2-9 Figure 2-15. Arrangement of Gears in Rear Push Tractor Feed ......2-9 Figure 2-16. Top Entrance - Friction Feed Method .............................2-10 Figure 2-17. Rear Entrance - Push Tractor Method............................2-l O Figure 2-18. Rear Entrance - Push-Pull Tractor Method ...................2-l 1 . Figure 2-19. Front Entrance - Friction Feed Method . . . . . . . . . . . . . . . . . . . . . . . . .2-11 . Figure 2-20. Front Entrance - Push Tractor Method . . . . . . . . . . . . . . . . . . . . . . . . .2-12 Figure 2-21. Front Entrance - Push-Pull Tractor Method..................2-l 2 Figure 2-22. Top Edge Holder Mechanism ...............................................2-l 3 Figure 2-23. Outline Ink Mechanism System .........................................2-14 .... Figure 2-24. Pump Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-15 ... Figure 2-25. Pump Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-16 .... Figure 2-26. Cap Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17 ... Figure 2-27. Air Inlet Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-17 ... Figure 2-28. Cleaner Blade Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18 ... Figure 2-29. Rubbing Block Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18 ... Figure 2-30. Set/Reset of Cleaner Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 Figure 2-31. Carriage Lock............................................................................2- 19 .. Figure 2-32. internal Structure of Ink Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20 Figure 2-33. Structure of Ink Cartridge Holder......................................2-2l .. Figure 2-34. Structure of Wasted Ink Drain Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21 .....
L
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REV.-A Figure 2-35. Operational Sequence of Ink Mechanism and Carriage Position .....................................................................2.22 Figure 2-36. Interlock Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ..2-26 Figure 2-37. Power Supply Circuit Block Diagram .................,.............2-28 Figure 2-38. Control Circuitry Block Diagram ........................................2.29 Figure 2-39. Reset Circuit Block Diagram ...............................................2-3 1 .. Figure 3-40. Detection Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31 Figure 2-41. Paper Feed Motor Drive Circuit..........................................2.32 Figure 2-42. Carriage Motor Drive Circuit ...............................................2.33 Figure 2-43. Printhead Drive Circuit..........................................................2.34 Figure 2-44. Charge/Discharge Circuit .....................................................2.35 Figure 2-45. Head Charge Condition..........................................................2.35 Figure 2-46. Head Discharge Condition ....................................................2.35 Figure 2-47. Timing for Discharge/Charge Pulse..................................2-36 Figure 2-48. Block Diagram of Pump Motor Drive Circuit.................2-36 Figure 2-49. Block Diagram of TE Motor Drive Circuit.......................2-37 Figure 2-50. Block Diagram of Timer Circuit/Backup Circuit ..........2-37 Figure 2-51. EEPROM Control Circuit .......................................................2.38
LIST OF TABLES
Table 2-1. Paper Feeding Method and Paper Entrance.......................2-6 Table 2-2. Rotational Direction and Operation of Each Part ............2 -15 Table 2-3. Ink End/Ink Cartridge Signal ...................................................2.2O Table 2-4. Ratings of Power Supply Board..............................................2.27 .. Table 2-5. Voltage Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27 Table 2-6. Major Elements on C076 MAIN Board and Their Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....................2 -30 ... Table 2-7. Carriage Motor Drive Modes ...................................................2.33
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2.1 OPERATING PRINCIPLES OF PRINTER MECHANISM
This section describes functions and operations of the printer mechanism - Model-47 10/4760. Modei-47 10/4760 is a serial type printer mechanism with a 48-nozzle printhead. This printer mechanism consists of the printhead unit, paper feed unit, ink mechanism, and sensors. Figure 2-1 shows the block diagram of the printer mechanism Model-47 10/4760.
LOCK
PF PE/FPE/R F/T
TE EDGE
CM EN TH DG HEAD
IE IE2
PM
s
Cover Open
i
B1
M S S S M S
Paper Feed TE Holder
G=1
I t-nnmeau .......1
I
Ink Cartridge
I I Punp Unit I . &:y:e:aln[ I (Cap, Cleaner)~ i
1
Figure 2-1. Block Diagram of Printer Mechanism - Model-471 0/4760
2-1
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2.1.1 Printhead
Mechanism
The printhead of this printer employs the on-demand method, where part of the ink stored in the reservoir within the printhead is supplied into the nozzle each time ink in the nozzle chamber is injected. Figure 2-2 shows the internal structure of the printhead. The functions of the major components are explained below.
q Head damper
When the carriage moves, the ink tube also moves, which results in the change of pressure within the tube. The head damper is used to absorb this change of pressure and prevent the ink from rushing into the reservoir.
q Reservoir
The ink supplied into the printhead is once stored in the reservoir. O Nozzle ,, `~~~ The ink stored in the reservoir is injected through nozzles. The structure of a nozzle is shown in Figure& 2-3.
Reserver Piezoelectric Element Ink Inflow Gate
/<",'/ ,'
- - - - - - ' . \ I I I I ; /
/; I II 1 \-,/' I -- \ \ \ -- ---- --./
-Damper
\
Nozzle
1 \
\
` Filter
Figure 2-2. Internal Structure of Printhead
Diaphragm
`ozzem
2-2
!3\
/
Piezoelectric Element
T
\ Pressure
Chamber
Figure 2-3. Structure of a Nozzle
REV.-A < Printing > This section describes how ink is injected through the nozzles. (1) Normal condition ---Piezoelectric Element is electrically charged and bent inward.
Piezoelectric Element
/
)
(
Figure 2-4. Printing Principle (1) (2) Charging operation --When the electric charge of the piezoelectric element is gradually discharged, the element is bent outward to let ink into the pressure chamber.
Pressure Chamber
1
I
Figure 2-5. Printing Principles (2)
(3) Injecting operation --The ink in the pressure chamber is injected when the piezoelectric element is quickly charged and bent inward.
1
1
Figure 2-6. Printing Principles (3) When charging ink or cleaning the printhead, the ink in the pressure chamber is vacuumed out by the pump. When printing, on the other hand, the ink is simultaneously injected and supplied according to the change of volume of the pressure chamber. This printer is provided with the function to change the printhead drive voltage corresponding to the ink temperature, because the viscosity of the ink is subject to change depending on the ink temperature. A thermistor is attached on the carriage to detect the ink temperature. When the ink temperature is low (i.e. the viscosity is high), the printhead drive voltage is increased, or vice versa. The temperature signal is fed back to the printhead drive voltage control circuit to adjust the voltage to a proper level.
2-3
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2.1.2 Carriage Mechanism
The timing belt attached to the base of the carriage is driven by the carriage motor and the pulley. This makes the carriage (printhead) move along the guide shafts. A scale made of polyester (DETECTION, PLATE, PTS) is provided along the motion range of the carriage. The optical linear encoders mounted on the carriage scan this scale and output one pulse of signal each time the carriage moves 1/1 20 inch. The signal consists of Phase-A and Phase-B, which are 90 degrees different from each other. Therefore, the controller can recognize the moving direction of the carriage by detecting this difference. The controller can also recognize the carriage speed from the signals sent from the encoders.These signals are also used to adjust print timing. This printer is not provided with a home position sensor. Instead, the carriage is designed to hit the left stroke end each time the printer is initialized. At this time, the controller resets the carriage position counter to "O" and then counts up/down pulse signals sent from the encoder to determine the carriage position. c' -.
$s2
k
>:" / / A Carriage Motor
.
Carriage
SHAFT, CR, GUIDE, MAIN
/Timing Belt
m
Figure 2-7. Carriage Mechanism
2-4
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< Adjustment of Platen Gap > The platen gap must be adjusted with the head adjust lever (LEVER, GAP, ADJUST) depending on the thickness of paper. When the head adjust lever is operated, it turns the carriage guide shaft (SHAFT, CR, GUIDE, MAIN) and makes the carriage closer/farther to/from the platen. (The shaft has an eccentric cross section.)
LEVER, GAP, ADJUST
r
\
\
L--.
o
Figure 2-8. Adjustment of Platen Gap
2-5
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2.1.3 Paper Feed Mechanism
The paper feeding method for this printer is divided into the friction feed method and the tractor feed method. The tractor feed method is further divided into the push tractor method and the push/pull tractor method. (This printer is provided with a standard tractor which performs "'push-type" feeding. In order to perform "push/pull-type" feeding, you must attach an optional tractor.) Also, this printer is provided with three different paper insertion. The most appropriate paper insertion is to be selected depending on the type of paper or feeding mode. The following table lists each paper feeding method in relation to the paper path. Table 2-1. Paper Feeding Method and Paper Entrance Paper Insertion (Paper Path) Paper Advance Method Friction Feed Push tractor Feed Pu