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EPSON
EPSON TERMINAL PRINTER
LQ-850/105O
TECHNICAL MANUAL
Y45499901 o-z
1 ! .,
,7
. . . . . . .
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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 /.LP 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 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 Chapter 3 Chapter 4 -
Describes the theory of printer =peration.
Discusses the options Includes a step-by-step guide for product disassembly, assembly, and adjustment.
Chapter 5 Chapter 6 -
Provides Epson-approved techniques for troubleshooting. 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.
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REVISION TABLE
REVISION A DATE ISSUED Aug. 31, 1987 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 OPTIONAL EQUIPMENTS DISASSEMBLY, ASSEMBLY, AND ADJUSTMENT TROUBLESHOOTING MAINTENANCE
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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
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LIST OF FIGURES
Fig. 1-1. Fig. 1-2. Exterior Views of the LQ-850/l 050 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 1 Printhead Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1- .3 . .
Fig. 1-3. Fig. 1-4. Fig. 1-5. Fig. 1-6. Fig. 1-7. Fig. 1-8. Fig. 1-9.
Cut Sheet Paper Printable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 5 Fanfold Paper Printable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 6 Head Adjustment Lever Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 7 . Character Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 Data transmission Timing of 8-bit Parallel interface . . . . . 1-13 36-Pin 57-30360 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13 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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LIST OF TABLES
Table 1-1. Optional Units...................................................o..mmm..mmo.mmm"""..""..1- 2 . Line Feed Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 4 Table 1-2. Optional Interface Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..1- 2 Table 1-3.
Table 1-4. Cut Sheet Paper Specified Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 4 Table 1-5. Table 1-6. Table 1-7. Table 1-8. Table 1-9. Fanfold Paper Specified Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 5 . Lever Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 7 Ribbon Cartridge Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1- 7 Dimensions and Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..1- 8 . 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
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1.1 FEATURES
The LQ-850/ 1050 printers are multifunctional,
features of the these printers are: .---.-- Zq-pin printhead, impact dot matrix printers The main
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 1detailed 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
.
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. #73 11 #731 2 #7339 #7340 #7753 #7754 #7400 #7401 #7402 #7403 Tractor unit Tractor unit Cut sheet feeder (single-bin) Cut sheet feeder (single-bin) Ribbon cartridge Ribbon cartridge Courier font-module Prestige font-module Script font-module OCR-B font-module o o o o o o o o Name LQ-850 o o LO-1 050
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
Method
Specifications Serial, impact dot matrix
See Figure 1-2 (12X 2 staggered, diameter: 0.2 m m ) .
Printing
Pin Configuration
T
I fhz
o m
: !-
I1
11
13 15
!
6 10 12
1'
"--
17
19
$
16
18
20 22 4
21
23
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.
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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 Cut sheet paper
Line Spacing
Inserted from the rear side Inserted from the up side
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 [ins/line] 60 65 65 Continuous IIPS] 3.0 2.7 2.7
Friction w/o CSF Friction w/ CSF Tractor
Paper specifications Cut sheet paper Refer to Table 1-4. Table 1-4. Cut Sheet Paper Specified Conditions LQ-850 Width Length [mm] [mm] 1 8 2 - 2 5 7 ( 7 . 2 - 10.1") LQ-1 050 1 8 2 - 3 6 4 ( 7 . 2 - 14.4")
1 8 2 - 305 (7.2 - 12.0") 0.065 -0.10 (0.0025 - 0.004") 14 - 2 2 ( 5 2 - 8 2 g\m2)
Plain paper
Thickness [mm] I Weight
Quality
[lb] I
Copies
Not available
Fanfold paper
Refer to Table 1-5,
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REV.-A Table 1-5. Fanfold Paper Specified Conditions LQ-850
Width [mm] 101 - 254 (4.0 - 1 0 . O " )
LQ-1 050 101 406 (4.0
-
16.0")
Copies
[sheet]
4 (1 original + 3 ) at normal temperature 3 (1 original + 2 ) at all temperature range
Quality Total Thickness [mm] Weight [lb]
Plain paper 0 . 0 6 - 0.32 (0.0023 -0.01 2")
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. --
10.1 2", 3 mm_ or more `
7.2 - 10,1*' (1 4.4)", 1-
1 82-
257 (364) mm I
9 -0.1 2", 3 mm or more
Printable area
1
T 0.33",-8.5 mm or more
D, r n t a 1 Max. 12", b 305 I n 1'
T
ABC
T
XYZ
0.53", 3.5 mm or more _J_~
1
e
a
r e a
L
ABC
--l
XYZ
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
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REV.-A Fanfold paper
See Figure 1-4.
b.
* 2 ~
4 - 1O*1(1 6)", 101 - 254 (406) mm
Printable area J * 2
d
o 0
0
0
Printable area
; 0 0 0 ;
o ;
1 0.35", 9 mm or m o r e 0.35", 9 mm or more
LABC
------------------
---
o o
0 0
ABC
r
t Printable area
0
o
o 0 0 0
0 0 0 0 0 0 XYZ 1 0 0 0 0 ------ 0 0 0 0 XYZ 7 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 Quality Thickness Weight No. 6 (166 X 92 mm), No. 10 (240 X 104 mm) Bond paper, xerographic copier paper, airmail paper 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"). 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 Thickness 2 1/2 X 15/1 6", 4 X 15/16", 4 X 17/16" 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 2nd 3rd -- 4th 5th Paper Thickness [mm] 0.06 - 0.12 0.13 - 0 . 1 7 0.18 -0.25
1
Head adjustment Lever
`orwardw
,, n
f=;tackwa'd
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. Printer Color Life Dimension
(W)
#7753 LQ-850 Black
#7754 LQ-1 050
[characters] [mm]
2 million (LQ, self-test) 290 X 34 X 71 468 X 34 X 80
X (h) X (d)
1-7
REV.-A
Dimensions W e i g h t See Table 1-8 (Details are shown in Figures A-45 and 46.) See Table 1-8. Table 1-8. Dimensions and Weight
Width [mm] LQ-850
LQ-1 050
Height [mm]
Depth [mm] 360
360
Weight [Kg] 10
12
430
605
142
142
NOTE: Excluding paper feed knob and paper guide. Electrical Specifications See Table 1-9. Table 1-9. Electrical Specifications L 120 V Version
Voltage [V AC] Frequency range [Hz] Rating current [A] Insulation resistance [M ohm] min. (between AC line and chassis)
220/240 V Version
I
108 - 132
I
198 - 2 6 4
I I
49.5 - 6 0 . 5 2
I
10
1
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 5 - 35 101
0.25
Temperature ["C] Humidity [% RH] Resistance to shock [G] (within 1 ms) Resistance to Vibration [G] (55 Hz, max.)
30 - 65 5 - 85 2
0.50
80
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) VDE871 (self-certification) (Europe version) Interference 1.2.2 Firmware Specifications Control Code Printing Direction
Text Bit-image Character Code Character Set Family Fon~ Bidirectional with logic seeking Unidirectional 8 bits 96 ASCII and 13 international character sets Roman: Roman: Sansserif: Draft: Printing Mode No. O 10, 12, 15, Proportio~al 10, 12, 15, Proportional 10, 12, 15, Proportional Sansserif: No. 1
ESC/P-83
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. Refer to Table 1-11.
Print Columns
1-9
REV.-A
Table 1-11. Printirm Mode
Print Pitch Condensed Emphasized Double Width Character Pitch Printing Speed
[CPS]
Draft 220 110 110 55 188 94
264
Printable Columns LQ-850 80 LQ-1 050 136
[cPI]
0 0 0 0 1 1 0 1 1
x
LQ 73
10 5 10 5 17.1 8.5
12
36
73 36 125 62
88
40
80 40 137 58 96 48 96 48 160 80 120 120 60 60
68
136 68 233 116 163 81 163 81 272 136 204 204 102 102
o 1
12
0
0
0 1
6 12 6 20 10 15 @ 7 < 7.5 7.5
132 132 66 220 110 330 165 165 82
44 88 44 146 73 110 55 110 55
Ignored
1
0 1
1
x
o 1
15
0
0
0 1
1
0 1
1 o
x x
x
o
8.6 20
--
62 146
Max.
68 Max. 160 Min. 34 Max. 80 Min. 137 Max. 320 Min. 68 Max. 160 Min. 102 Max. 240 Min. 51 Max.
116
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
272 58 136 233 544 116 272 174 408 87 204 174 816 87 204
1 `proportional 1 x o
4.3 10 17.1 40
-- -- -- -- -- -- -- -- -- -- -- -- -- --
31 73 125 293 68 146 94 220 47 110 188 440 94 220
1
8.6 20
0
x
o
12.8 30
1 `roportiona I ; uper/ subscript
6.4 15
120 Min. 204 Max. 480 Min. 102 Max. 240 Min.
1
x
o
25.7 60
1
12.8 30
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 See Figure 1-6 and Table 1-12.
(Superscript Character) Pin Nos. 17 to 24 are not used when superscript printing.
(Normal Character) I 2 3
4
Ascender Area R A H T s 2L 3 E
4 F
--
R A H T s P A c E
5 6 7 8 9 10 II 12 13 14 15 16 17 18 19
Ascender Area (15P itch )
10
-20
--
21 22 2 3
24
1-
1--1
Descender Area Face Width(ol ) Choracrer Width (CWI
P A
c E (a 2
5 T 6 7!j - 8 P 9A 10 c II E 12 13 14 15 16
:[
--
(Subscript--Character) Pin Nos. 1 to 8 are not used when subscript printing.
10 II 12 13 14 15 16 ~7 18 19 20 21 22 23
L E F T
24 ---
Fig. 1-6. Character Matrix
1
S p A c E
R I G H T
s
P A c E
1-11
REV.-A Character Size See Table 1-12. Table 1-12. Character Matrix and Character Size
Face Matrix 9 X 23 9 X 23 9 X 16 ... ... 29 X 23 29 X 23 15 X 16 .. ... max. 39 X 23 min. 18 X 23 LQ, proportional, condensed ... ... LQ, proportional, super/subscript max. 28 X 16 min. 12 X 16 LQ, proportional, super/subscript, condensed ... ... HDD 120 120 120 240 240 360 360 360 360 360 360 360 360 360 360 360 360 360 Character Size H. X V. (mm) 1.9 X 3.2 1.9 X 3.2 1.0 ~ 2.3 .... . . . Unit ESC Sfl 120 120 120 240 240 180 180 180 360 360 180 1.0 X 3.2 ... 360 ... 1.8 X 2.3 . 180 0.7 X 2.3 ... 360 ...
Printing Mode DRAFT, 10 pitch DRAFT, 12 pitch DRAFT, 15 pitch DRAFT, 10 pitch, condensed DRAFT, 12 pitch, condensed LQ, 10 pitch LQ, 12 pitch LQ, 15 pitch LQ, 10 pitch, condensed LQ, 12 pitch, condensed LQ, proportional
2.0' X 3.2 2.0 X 3.2 1.0 X 2.3 ... ... 2.6 X 3.2
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
REV.-A
1.3 INTERFACE OVERVIEW
The LQ-850/l 050 has both 8-bit parallel interface and RS-232C serial interface as standard. They can be selected by DIP switches 2-3 and 2-4 respectively. (This detail of DIP switch settings, refer to Table 1-1 7.) 1.3.1 8-bit Parallel Interface Specifications Data Transmission Mode Synchronization Hand Shaking Logic Level Data Transmission Timing Connector 8-bit pallarel By STROBE pulse By BUSY and ACKNLG (either or both) TTL compatible See Figure 1-7. 57-30360 (AMPHENOL) or equivalent (See Figure 1-8.)
--
BUSY [d ACKNLG DATA
\=!=
W
NOTE: Transmission time (rising and falling time) of every input signal must be less than 0.2 ws. Fig. 1-7. Data Transmission Timing of 8-bit Parallel Interface
1.
2. 3. 4.
5. 6. 7. 8. 9.
19. r -20.
GNO ( Pair witn l.)
GNo ( Pa;, with2.)
21. GNO ( Pair w;tl13.) 22. GNO ( Pair w;tn4.)
23. GNO ( Pair W;tns.) 24. GNO ( Pair w:tn6. ) 25. GNO ( Pair witn7. ) 26. GNO ( Patr 27. GNO (
W:tne. )
Pair w;tf19.)
10
11 12 13 14 15 16 17 10
28. GNO ( Pair W;th I o.) 29. GNO ( Pair W;th 1 1. ) 30. GNO (Pair W;tn 1 2.) 31. ~T 32. m 33. GNO 34. NC 35. q 5V 36. m
Fig. 1-8. 36-Pin 57-30360 Connector
1-13
REV.-A 1.3.2 RS-232C Serial Interface Specifications Data Transmission Mode Synchronization Handshaking RS-232C serial Asynchronous By DTR (REV) signal or X-ON\OFF protocol Refer to Table 1-13 and Figure 1-9. Table 1-13. Serial Interface Handshaking DTR Signal MARK X-ON/OFF protocol X-OFF (13H) Description When the number of bytes remaining in the input buffer reaches 256 or less, the signal level goes to MARK, or a X-OFF code is sent out to the host computer. This indicates that the printer is not ready to receive data. SPACE X-ON (1 1 H) When the number of bytes remaining in the input buffer reaches 512 or more, the signal level goes to SPACE, or a X-ON code is sent out to the host computer. This indicates that the printer is ready to receive data.
I
DTR (REV) Signal MARK ( - 12VI
I- - - - - - - 8Kbyte `
1
I
4
I1
SPASE ( + IZV) 5 1 2 b y t e 256byte O
1 I
I
byte Input Buffer Vacant Area
I
I
X-ON
X-OFF
X-ON/X-OFF Protocol
Fig. 1-9. Hand Shaking of RS-232C Interface Word Length Start bit Data bit Parity bit Stop bit Bit Rate Logic Level Data Transmission Timing 1 8 Odd, Even, or none (selectable by DIP switches 2-3 and 2-4) 1 bit or more 300, 1200, 4800, or 9600 BPS (selectable by DIP switches 2-5 and 2-6) EIA level, MARK: logical 1 (3 - 27 V) SPACE: logical O (+3 - +27 V) See Figure 1-10.
1-14
REV.-A
(
+V)
t'+
- - - - - - - - - - - - - - - - - - - - - - - - - -
,1
DTR ( -v) [ +V] RXD [ -v] * Start Bit
-o~j-z~3~q-g-6~j:
Data Bit
---S ~
Stop Bit -T' " 1+
1Pari~Y
DTR Handshake
( + v)
RXD ( -v)
-
."[I[3[4mE::17
Data Bit l-l P:rlty [
Stop Bit
,,--
Start Bit
(
+V)
--
TXD ( v) S;:;t ;;ta&i; X-ON/X-OFF Protocol
NOTES: 1. The value of "T" varies according to the input data. 2. The word structure of serial data is 1 start bit + 8 data bits + parity (Odd, Even, or none) + 1 or more stop bit. Fig. 1-10. Serial Data Transmission Timing Error Detection Parity error: "x" is printed.
Overrun error: Ignored Framing error: Ignored Connector 6-pin DIN connector (See Figure 1-1 1.)
RXD
DTR TXD \ 1
I
NC Chassis GND Signal GND
Fig. 1-11. Serial Interface Connector
1-15
REV.-A 1.4
DIP Switch and Jumper Settings
The DIP switches that users can set are SW1 and SW2. These switches are positioned at the rear of the printer, and have the functions as shown in Tables 1-14 through 1-18, (note that the status of the DIP switches are read only when the printer power on or an INIT signal is input.) Table 1-14. DIP Switch 1 Settings I DIP SW. 1-1 1-2
I I I
I I I
I Table select Not used Not used I CSF mode Input buffer
Function
ON
OFF
International characher set
See Table 1-15.
1-3 1-4 1-5 1-6
Graphic -- --
Italic
l
l
I
1-7 1-8
Valid None
I Invalid I 6K-byte
Table 1-15. International Character Set Designation Country U.S.A. France Germany U. K. Denmarkl Sweden Italy Spain 1 1-1 ON 1-2 ON 1-3 ON
I I I I I
ON ON ON OFF OFF OFF OFF I
I
I I I I I
ON OFF OFF ON ON OFF OFF I
I
I
OFF ON OFF ON OFF ON OFF
I
I I I I
I
NOTE: The above settings can be changed to any country's characters set by inputting ESC R control codes.
1-16
Table 1-16. DIP Switch 2 Settings DIP SW. 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 -- Table 1-17. Interface Sele;tion 2-3 2-4 Function Parallel Serial, Even parity I Serial, Odd parity I Serial, None parity] Tear off mode Auto LF Baud rate selection Page length Function ON 12"
perforation
OFF 11 "
Invalid
I 1"
skip-over
Valid
Interface selection
I I
I
See Table 1-17.
See Table 1-18. 1 Valid ValidInvalid
Invalid
I
I I
OFF ON OFF
I
I I
OFF OFF ON
I ON I ON I
Table 1-18. Baud Rate Selection
I
I
I
2-5 OFF ON OFF ON I
I
I
2-6 OFF OFF I
I
Function 9600 4800 1200 300
I
I
1
I
I
ON ON
I
1-17
REV.-A
Fiugre 1-12 shows the factory settings for DIP switches SW-1 and SW-2. Country U. S. A., Southeast Asia, Middle and Near East Germany, Northern Europe U. K., Australia
F r a n c e , Itary, Spain
White areas indicate the setting. Fig. 1-12. DIP switches 1 and 2 Factory Settings Jamper Setting See Table 1-19.
Table 1-19. Jumper Setting No.
1 M-bit Mask-ROM J1 J2 J3 J4 B2 B1 B3 ROM 4M-bit N.C. B1 RD ROM 2M-bit Type 256 K-bit P-ROM + 5 B1 RD ROM 1 M-bit Mask-ROM J5 J6 RD B4 LQ-850 J7 80 27256 J8 256 SICTIN enable J9 SLIN RD B4 B3 + 5 LQ-1 050 136 27512 512 SLCTIN disable GND PROG -- RD + 5 -- CGO PS-RAM B1 WR RD RAM 64 K-bit ST-RAM N.C. WR RD ROM 256 K-bit CG 1 Locatior
Bold indicates the factory settings.
1-18
REV.-A
1.5 SELF-TEST OPERATION
The LQ-850/l 050 printer has the following self-test operation. The control ROM version No. and the
DIP switch settings also printout when the self-test is performed. Table 1-20 lists the self-test operating instructions and Figure 1-13 shows the self-test printing. Table 1-20. Self-Test Operation Type-face Start stop
r
Draft
Turn the power ON while pressing the LINE-FEED switch. Push the ON-LINE switch, and turn the
power OFF"
LQ (Roman)
Turn the power OFF while pressing the FORM-FEED switch.
j-18-l 7 7'7 Country USA F" rance
Sul-1 1 - 2 1 - 3 O n onon on o n o f f
on o n o~~ off o n o~f off on on o f f o n off
Page Length 11" 12"
SU2-1
off on SU2-2 off SU;~3 off on off SU;f5 off on off SU27 off on 2-4 off off on ;F6 off ott on on
Germany
U.K. Denmark Sweden 1 tal.y Spain CG
l"skip Invalid
Va Lld
oft o n off off off o f f
table
Italic Graphic not used not used
SU1-4
off on SW1-5 SW1-6 SW1-7 off on SU1-8 off on
Interface Parallel Serial even Serial odd Serial none Baud Rate 9600 BPS 4800 BPS T e a r off mde Invalid Valld Auto LF Invalid Valid
CSF wde Invalid Valid Receive b u f f e r 6KB O!(B
SU2-8 off
on
D rat t 10 ! " #$%& ` ( )*+ .-. /0123456789 : ,-< = >'~@ABCI)EFGH IJKLMNOPQRSTUVWXY Z [ \ I . . ` a ! " #$~& ` ( )*+ , -. /0 123456789 : .: < = >'?@ABCDEFGH IJKLMNOpQRSTUVWXyZ [\ J"' ` ak " #$%& ` ( )*+ .-. /ol~.3456"789 : ; ~. - ~ -?@ ABC DE F-GH I JKLMNOPQRSTUVWX YZ ( \ ]" Tabc
Bold indicates the current DIP switch settings. Fig. 1-13. Self-Test Printing
1-19
REV.-A
1.6 HEXADECIMAL DUMP FUNCTION
In hexadecimal dump mode, the printer prints out the data it receive? in hexadecimal format. The printer prints a column of 16 hexadecimal values, folIowed by a column containing the 16 corresponding ASCII characters. If there is no corresponding printable character for a value (e.g., a control code, such as a carriage return or line feed), a period (. ) is printed in the ASCII column in the position of the code. Each line of the dump contains 16 values, printed in the order they were received, and any remaining data (less than 16 values on the final line) can be printed by operating the ON-LINE switch. Table 1-21 shows the hexadecimal dump operation and Figure 1-14 shows printout of the operation. Table 1-21. Hexadecimal Dump Operation Function Hexadecimal dump mode Operation Turn the power on while pressing both the LF and FF switches. stop Turn the power off.
D a t a Dum~ M o d e 31 54 70 74 2D 69 72 65 6F 6E 20 69 51 6D 65 6E 2E 68 72 69 70 6D 69 20 66 74 55 6C 2D 61 65 20 31 65 69 66 69 70 78 6D 20 65 70 69 38 78 64 64 20 20 6E 75 6E 61 20 61 74 72 77 74 30 69 20 72 46 4C 74 6E 20 63 70 69 68 73 61 79 30 6D 6F 61 45 51 65 63 70 74 72 6E 65 20 72 20 2F 75 66 66 41 54 55 52 45 53 2D 38 35 30 2F 31 72 73 20 61 72 65 74 69 6F 6E 61 6C 72 69 6E 74 68 65 20 64 6F 74 2D OD 69 6E 74 65 72 73 20 66 65 61 74 75 20 74 68 65 73 65 61 72 65 3A 20 OD 64 20 63 6F 6D 70 77 69 74 68 20 74 31 30 30 30 OD OA 6D 20 70 72 69 6E 20 32 36 34 20 43 74 20 6D 6F 64 65 OD 06 OD 30 35 30 20 6D 75 2C 20 32 61 64 2C OA 6D 61 2E 20 54 72 65 73 20 70 72 OA OD 0($ 61 74 69 68 65 20 2E 20 41 74 20 73 50 53 20 20 61 74 OA 20 6C 34 20 74 68 20 69 2E 62 4C 20 70 69 20 1.1 FEATURES. . . . T h e LQ-850/1050 printers are mul tifunctional, 2 4 -pin print head, impact dot-. mat rix printers. Th e main features o f t h e thzse p r i nters are: . . . . . U p w a r d compatib ility w i t h t h e L Q-800/looo. . . A maximum print sp eed of 264 CPS i n draft mode at
Fig 1-14. Hexadecimal Dump List
1-20
REV.-A
1.7 PRINTER INITIALIZATION
There are two initialization methods: hardware initialization and software initialization. 1.7.1 Hardware Initialization
This type of initialization occurs when printer power is turned on or when the printer receives the INIT signal from the host via the 8-bit parallel interface. When printer is initialized in this way, it performs the following actions: q Initializes printer mechanism q Clears downloaded character set q Clears the input data buffer q Clears the image buffer q Sets printer selections to their default values 1.7.2 Software Initialization This type of initialization occurs when the printer receives command (ESC @) via software. WhiSin the printer is initialized in this way, it performes the fo~owing actions: q Clears the image buffer q Sets printer selections to their default values. NOTE: The printer's default values are as follows: Page Position Left and Right Margin Line Spacing Vertical Tab Position Horizontal Tab Position VFU Channel Preset paper position becomes top of form position Released 1/6 inches Cleared Every 8 characters (relative)
Channel O Family Number of Type Style Roman (Family Number O) Deselected: Software initialize Cleared: Hardware initialize Left justification
Downloaded Characters Justification Character Per Inch
10 Bit Image Mode Assignment ESC K = ESC *O, ESC L = ESC xl, ESC = ESC X 2, ESC Z = ESC X3 Printing Effects Cleared
1-21
.
REV.-A
1.8 BUZZER OPERATION AND ERROR CONDITIONS
This section describes the buzzer operation and error conditions of the printer.
1.8.1 Buzzer Operation The buzzer ring as follows: . When a BEL code is sent to the printer, the buzzer sounds for 0.5 seconds . When an error has occurred Sounds 5 times (rings for 0.5 seconds with 0.5 seconds interval.) Carriage Trouble: Paper End: Sounds 3 times (rings for 0.1 seconds with 0.1 seconds interval.) q When a panel setting is accepted, the buzzer sounds for 0.1 seconds (Refer to Section 1.9.4 for further information concerning control panel settings.) 1.8.2 Error Conditions If any of the following errors occur, the printer automatically enters the OFF-LINE mode. q Home position is not detected at printer mechanism initialization. q Home position is detected during printing. q The OFF-LINE switch is pressed, causing the printer to enter OFF-LINE mode. q Paper-out is detected when forms-override is finished. q A paper-out signal is detected and forms-override is finished. q A paper-out signal is detected after the printer has performed a paper-loading operation with the cut sheet feeder enabled. For information concerning the status of the interface signals, refer to Section 2.3.2.
1-22
REV.-A
1.9 MAIN COMPONENTS
The LQ-850/ 1050 printer includes the following major subassemblies:
q Model-53 10/5360 printer mechanism q MONMA board (main board) q MONPL board (control panel) q MONPS/MONPSE board (power supply board, 120V and 220/240V versions) Figure 1-15 shows the LQ-850/l 050 component locations. r
1 .--,
I
LQ-850
LQ-1 050
NOTE: In LQ-850, the paper tension unit and push tractor unit are excluded. Fig. 1-15. LQ-850/l 050 Component Locations 1.9.1 Printer Mechanism The printer mechanism is composed of two stepper motors used in carriage move and paper feed, a 24-pin printhead, four sensors (home position, paper end, friction/tractor, and platen gap sensors), and metal frames. The printer mechanism has two paper guides (depending on the paper type), a push type tractor unit, and an optional pull type tractor unit. These features enable the LQ-850/ 1050 printers to print on a wide range of usable paper types. The construction of the mechanism has been simplified to make maintenance very easy.
Model-531 O
Modei-5360
Fig. 1-16. Model-5310/5360 Printer Mechanism
1-23
REV.-A 1.9.1.1 Paper Loading and Paper Ejection The paper release lever has a disengage capability for the optional pull tractor unit's drive mechanism. Therefore, these printers provide some improved paper handling functions that can be performed by using a combination of the paper release lever and LOAD/EJECT switch on the control panel. Single Sheet Loading and Ejection
T O load a sheet of paper, position the paper release lever back, place the page along the paper guide,
and press the LOAD/EJECT switch. This loads the paper at the top-of-form position. If LOAD/EJECT switch is pressed after paper has been loaded, it causes the paper to be ejected. Fanfold Paper Loading and Ejection (Back Out) To load fanfold paper, move the paper release lever forward, and insert the paper into the push tractor. Pressing the LOAD/EJECT switch loads the paper automatically to the top-of-form position. If LOAD/EJECT switch is pressed after the fanfold paper has been loaded, the printer ejects the paper backward from the push tractor. To back out several pages, press the LOAD/EJECT switch several times, since reverse feed is performed on a page-by-page basis. The SelecType LEDs light only after the paper has been loaded and the ON-LINE switch has been pressed. After ON-LINE has been pressed, the user can adjust the paper loading position for the next sheet loaded into the printer and the top-of-form position for the currently loaded sheet. Pressing the FORM-FEED switch advances the paper forward in increments of 1/180 inches continuously for as long as the switch is held down, and pressing the LINE-FEED switch moves the paper in reverse in increments of 1/180 inches. Moving the paper with these switches is called "micro adjustment". After the paper has been adjusted in this way, the printer uses that position as the loading position for each subsequent page. When the printer is initialized, the loading position for a single sheet returns to the default value. 1.9.1.2 Auto-Tear-OFF Function To enable the auto-tear-off function, set DIP switch 2-7 to ON prior to turning on the printer. When this function is activated and the paper release lever is placed in its forward position, paper is fed in the following way: after the input data buffer becomes empty, while printer is in the ON-LINE mode, the printer feeds the paper so that the perforation at the form's end is moved automatically to the tear-off edge of the sheet guide cover. After the printer has positioned the paper, the SelecType LEDs flash to indicate that the FORM-FEED and LINE-FEED switches are available for micro adjustment of the tear-off position, as long as the printer is ON-LINE. If subsequent data is input to the printer, then the paper will be reversed to its original position automatically and printing will start. If the ON-LINE switch is pressed (taking the printer OFF-LINE) while the paper is advanced to the tear off position, then the printer will reverse the paper to its original position.
1-24
REV.-A 1.9.2 MONMA Board (Main Board) Figure 1-17 shows the MONMA board, which contains a KPD78 10HG CPU to control the operation of the printer. Driver circuits for the motors, sensors, and printhead are also included on this board. Other main ICS on the MONMA board are: Universal IC q M546 10P (5A) . . . 8-bit parallel interface IC q STK6722H (1A) . . . Carriage motor driver IC Gate Array IC q EO5A1OAA (1OC)
...
Memory management unit (M MU) IC
q E05A09BA (2A) . . . Carriage and paper feed motors phase pulses control unit (MCU) IC q E05A02AA (3A) . . . Printhead data driver IC Memory IC q ET-ROM (9A) . . . Used for program, 256 K-bit q MASK-ROM (6A) . . . Used for character generator, 1 M-bit q ST-RAM (7A) . . . 256 K-bit q ST-RAM (8A) . . . 64 K-bit
--
Fig. 1-17. MONMA Board
1-25
REV.-A 1.9.3 MONPS/MONPSE Board (Power Supply Circuit Board) The power supply circuit board is located on one of two boards, the MONPS for 120 V AC operation and the MONPSE for 220/240 V operation. The basic construction of the two boards is the same: each board contains a power switch, fuses, line filter circuit, and switching regulator circuit. Compactness of the circuitry is made possible by use of a DC-to-DC converter.
MONPSE Board Fig. 1-18. MONPS/MONPSE Board
MONPS Board
1-26
REV.-A 1.9.4 Control Panel In the control panel, there are four square switches, three rectangular switches, and fifteen LEDs, as shown in Figure 1-19. The functions of the switches and indicators are given immediately below the
illustration.
0 POWER 0 REAOY
--
,-- P O W E R READY PAPER OUT
MULTl-PART-- FONT--
0 MuLTI.PART
u PAPER OUT - , --
SelecType
FONT 0 ON LINE
ON-LINE
O DRAFT O ROMAN 0 SANS SERIF nlrl
FORM FEED
FORM-FEED
$ n PITCH --
,PITCH 010 CPI
012 CPI 015 o CPI
.
LINE FEED G
LINE-FEED
Ps
[a
LOADIEJECT CONDENSED--
LOAD/EJECT
[
i
]
u-
f Q
Fig. 1-19. Control Panel ON-LINE Switch This switch toggles the printer between ON-LINE and OFF-LINE modes. The printer is automatically set to ON-LINE mode and becomes ready at power on. If the printer is set to OFF-LINE mode, printing is stopped and the printer becomes BUSY. FORM-FEED Switch Pressing this switch once while the printer is in the OFF-LINE mode advances the paper vertically to the next top-of-form position. Pressing this switch is while the printer is in the ON-LINE mode advances the paper forward in increments of 1/180 inches. The top-of-form position for the beginning page is set to the current position in any one of the following cases: a) Power on b) Receipt of the INIT signal host computer c) Receipt of the reset command ESC @ d) Receipt of the page length setting command ESC C LINE-FEED Switch When the printer is in the OFF-LINE mode, the paper advances continuously one line at a time while this switch is depressed. The space between lines of text is set using the line spacing command. When the printer is in the ON-LINE mode and the LINE-FEED switch is pressed, the paper moves in reverse in increments of 1/1 80 inches.
1-27
REV.-A LOAD/EJECT Switch Pressing this switch loads or ejects the paper (If a page is inserted into the cut sheet feeder, it is loaded; if a page is already loaded, it is ejected). Details of the paper loading and ejection process are described in Section 1.9.1.1. FONT Switch Pressing this switch selects a font, and continuing to press the switch for more than 0.5 seconds select the next font, sequentially. The FONT indicator lights beside the currently selected font. PITCH Switch Pressing this switch selects the character pitch, and continuing to press the switch for more than 0.5 seconds select the next character pitch, sequentially. The PITCH indicator lights beside the currently selected character pitch to confirm its status. CONDENSED Switch Pressing this switch selects normal or condensed printing. The CONDENSED indicator lights while selecting the condensed mode. POWER LED (Green) Lights when power is ON. READY LED (Green)
Lights when printer can receive the data.
PAPER OUT LED (Red) Lights when the paper is end, ON-LINE LED (Green) Lights in the ON-LINE mode. MULTI-PART LED (Orange) Lights when the head adjustment lever is set for 4th or higher. The light should not be lit unless multi-part forms are being printed. FONT (DRAFT, ROMAN, SANS-SERIF, SLOT A, SLOT B) LEDs (Orange) These LEDs indicate the currently selected font. If slots A and B contain font modules, they each may be selected using the FONT switch, and the indicator beside either SLOT A or SLOT B will be lit. If no font module is installed in the slot when the FONT switch is pressed, SLOT A and SLOT B selections will be skipped. PITCH (1 O CPI, 12 CPI, 15 CPL PROPORTIONAL) LEDs (Orange) These LEDs indicate the currently selected character pitch. NOTE: When 15 CPI is selected, condensed printing may not be used, CONDENSED LED (Orange) This indicator lights when condensed mode printing is selected.
1-28
REV.-A
1.9.5 Housing
The housing consists of the upper and lower cases and accommodates the printer mechanism, control
circuit board, and power circuit. The optional cartridges (i.e., font and identity modules) can be mounted easily without removing the upper case. Figure 1-20 shows the LQ-850/ 1050 housings.
LQ-850
...m, -
-.-,OF-.
--
-, L.,,.
-.F=
LQ-1 050 Fig. 1-20. Housings
1-29
REV.-A
CHAPTER 2 OPERATING PRINCIPLES
.. 2.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 1 2.1.1 Connector Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 1 2.1.2 printer Mechanism Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 3 2.1.2.1 Printing Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 4 2.1.2.2 Carriage Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 5 2.1.2.3 Paper Feed Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 7 2.2 POWER SUPPLY CIRCUIT OPERATION (MONPS/MONPSE board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..2-10. ... 2.2.1 MONPS/MONPSE Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 . 2.2.2 Input Filter Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12 2.2.3 Rectifier, Smoothing, and Surge-Suppression Circuit . . . . 2-12 2.2.4 Main Switching Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..2-13 2.2.4.1 Circuit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..2-13 . . 2.2.4.2 Surge Absorber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -15 2.2.4.3 +35 V Line Output Voltage Limiting . . . . . . . . . . . . . . . . . . . . . . . . 2-16 2.2.4.4 Over Voltage Protection Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17 2.2.5 +5 VDC Switching Regulator Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18 2.2.5.1 Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18 2.2.5.2 Voltage Regulator Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18 . 2.2.5.3 Soft Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-19 2.2.6 f 12 VDC Half-Wave Rectifier-Smoothing Circuit . . . . . . . . . . 2-20 2.3 CONTROL CIRCUIT (MONMA) BOARD OPERATION . . . . . . . . . . . . . . . . 2-21 2.3.1 Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22 2.3.1.1 Vx Voltage Supply Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22 2.3.1.2 Power ON/OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23 2.3.1.3 INIT Signal Input from CN1 or CN2............ . . . . . . . . . . . . . . 2-24 2.3.1.4 Font/Identity Cartridge Installation and Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..2-25 . 2.3.1.5 Static RAM (8A) Battery Backup Circuit . . . . . . . . . . . . . . . . 2-26 2.3.2 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . 2-27 2.3.2.1 8-Bit Parallel interface...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .2-27
z-i
REV.-A 2.3.2.2 RC-232C Serial interface...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32 2.3.3 Control Panel Interface Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35 2.3.4 CPU Address Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 -37 2.3.5 Status Monitoring Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-40 2.3.5.1 Reference Voltage Generation Circuit . . . . . . . . . . . . . . . . . . . 2-41 2.3.5.2 Printhead Temperature Monitoring Circuit . . . . . . . . . . 2-42 2.3.5.3 +35V DC Line Voltage Monitoring Circuit . . . . . . . . . . 2-43 2.3.5.4 DIP Switch Read Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44 2.3.6 Carriage and Paper Feed Motor Control Circuit . . . . . . . . . . . . 246 2.3.6.1 Gate Array E05A09BA (2A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47 2.3.7 Carrige Motorl Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 -49 2.3.7.1 Home Position Seek Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49 2.3.7.2 Logic Seeking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51 2.3.7.3 Carriage Meter Excitation System . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52 2.3.7.4 Carriage Movement Area and Speed Control . . . . . 2-53 2.3.7.5 Carriage M,otor Drive Corcuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-55 2.3.7.6 Home Position Sinsor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-58 2.3.8 Paper Feed Motor Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58 2.3.8.1 Auto Paper Loading/Ejecting Operation . . . . . . . . . . . . . . . 2-58 2.3.8.2 Paper Feed Motor Speed Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63 2.3.8.3 Paper feed Motor Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64 2.3.8.4 Sensor circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -65 . 2.3.9 Plunger Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-67 2.3.10 Printhead Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-69
2.3.10.1 E05A02LA Gate Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-70 2.3.10.2 HPW Trigger Pulse Generation Circuit . . . . . . . . . . . . . . . . . 2-72 2.3.10.3 Printhead Solenoid Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-74 2.3.10.4 Platen Gap Sensor Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-75
LIST OF FIGURES
Fig. 2-1. Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Fig. 2-2. Model-5310/5360 Printer mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Fig. 2-3. Printing Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Fig. 2-4. Carriage Mechanism.................................................................ma.... 2.5 Fig. 2-5. Ribbon Feed Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Fig, 2-6, Push Tractor Feeding Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2=8 2-ii
REV.-A Fig. 2-7. Fig. 2-8. Fig. 2-9. Frioction Feeding Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2- 9 MONPS/MONPSE Board Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11 Input Filter Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Fig. 2-10. Rectifier-Smoothing-Surge Suppression Circuit . . . . . . . . . . . . . . . 2-12 .. Fig. 2-11. Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13 . Fig. 2-12. Main Switching Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -14 Fig. 2-13. Waveforms at Primary and Secondary Sides of T1 . . . . . . . 2-15 Fig. 2-14. RCC System Switching Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15 Fig. 2-15. Output Voltage Stability Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16 Fig. 2-16. Over Voltage Protection Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-17 Fig. 2-17. +5 VDC Switching Regulator Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18 Fig. 2-18. CMP Input and Output Voltage Comparison . . . . . . . . . . . . . . . . . . . . 2-19 . Fig. 2-19. Soft Start Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-19 Fig. 2-20. Half-Wave Rectifier-Smoothing Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20 Fig. 2-21. MONMA Board Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-21 .. Fig. 2-22. Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22 Fig. 2-23. Vx Power Supply Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 -22 . Fig. 2-24. Power ON Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-23 Fig. 2-25. INIT and A Cartridge Installed/ . Removed Reset Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -24 . Fig. 2-26. Battery Backup Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -26 Fig. 2-27. Data Transmission Timing of 8-bit Parallel Interface.... 2-27 Fig. 2-28. 8-bit Parallel Interface Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-28 Fig. 2-29. 8-bit Parallel Interface Circuit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30 Fig. 2-30. 8-bit Parallel Interface Signal Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31 Fig. 2-31. Handshaking with DTR Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-32 Fig. 2-32. Handshaking with X-ON/X-OFF Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32 Fig. 2-33. RS232C Serial Interface Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-33 Fig. 2-34. RS-232C Serial Interface Circuit Operation . . . . . . . . . . . . . . . . . . . . . . 2-34 Fig. 2-35. RS-232C Data Transmission Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34 Fig. 2-36. Relationship Between MONMA Board . and MONPL Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-36 Fig. 2-37. MSM5837 Data Transfer Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-37 Fig. 2-38. MSM5837 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .2-37 ... Fig. 2-39. CPU. Gate Arrays. Memories Block Diagram . . . . . . . . . . . . . . . . . . . 2-38 Fig. 2-40. IC Address Location Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 -39 Fig. 2-41. Reference Voltage Generation Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 1 Fig. 2-42. Printhead Temperature Monitoring Circuit . . . . . . . . . . . . . . . . . . . . . . . 2-42 Fig. 2-43. Relationship of the Printhead and Printing . . . . . . . . . . . . . . . . . . . . . . . 242
2-iii
REV.-A Fig. 2-44. +35V DC Line Voltage Monitoring Circuit . . . . . . . . . . . . . . . . . . . . . . . . 2-43 Fig. 2-45. +35V DC Line Voltage Compensation Sequence . . . . . . . . . . . 2-43 Fig. 2-46. DIP Switch Read Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 -44 Fig. 2-47. Carriage and Paper Feed Motors Control Circuit . . . . . . . . . . . . 2-46 Fig. 2-48. E05A09BA Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 4 7
LIST OF TABLES
Table 2-1. Table 2-2. Boards Connector Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 2 Printhead Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 4
Table 2-3. Carriage Mechanism Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 5 Table 2-4. Ribbon Feed Gear Train . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 6 Table 2-5. Table 2-6. Table 2-7. Paper Feed Mechanism Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 7 Paper Feeding Method and Paper type . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 7 Power Supply Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 -10
Table 2-8. Voltages and Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1o . Table 2-9. State of Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -25 . Table 2-10. ST-RAM Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -26 Table 2-11. M5461OP Terminal Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28 Table 2-12. Relationship 8-Bit Parallel l/F Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31 Table 2-13. CPU/MMU Board Switche Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37 Table 2-14. CPU Analog Ports Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 4 0 Table 2-15. Relationship Limit value and Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 3 Table 2-16. Relationship Between +35V Line and AN1 . . . . . . . . . . . . . . . . . . 244 Table 2-17. BANK Signals and Analog Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 5 Table 2-18. Threshold Levels for DIP Switch Reading . . . . . . . . . . . . . . . . . . . . . . 245 Table 2-19. E05A09BA Address Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 8
2-iv
REV.-A
2.1 OVERVIEW
This chapter describes the signals at the various connectors that connect the primary components of the LQ-850/l 050, including the model-53 10/5360 printer mechanism, MONPS/MONPSE power supply board, MONMA control board, and the control panel. This chapter also describes the operation of the printer's electric circuitry and printer mechanism. 2.1.1 Connector Summary The interconnection of the primary components is shown in Figure 2-1. Table 2-1 summarizes the
function, size, and type of the connectors designated in the figure.
AC IN
\ Ho S-r COMPUTER
v
v
FAN U N I T
pa~==
I *- ~,~
RS 232C
MONPSI MONPSE ; . 0 &OARD ( z v *1
EMKG BOARD
I SW2 ] I Sw I
i
CN I --
CN 3
1-
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