Printer User Manual
Table Of Contents
- FRONT MATTER
- TABLE OF CONTENTS
- INTRODUCTION
- CHAP 1-SETTING UP THE PRINTER
- CHAP 2-PAPER HANDLING
- CHAP 3-USING THE PRINTER
- CHAP 4-USING SOFTWARE AND GRAPHICS
- Using the LQ-2550 With Application Programs
- Computer-Printer Communication
- Enhancing Your Printing
- Graphics
- User-Defined Characters
- Designing Your Characters
- Design Grids
- Data Numbers
- Sending Information to Your Printer
- Printing User-Defined Characters
- Copying ROM Characters to RAM
- Letter Quality Characters
- Proportional Mode Characters
- Superscripts and Subscripts
- The Graphics Command
- Column Reservation Numbers
- A simple Graphics Program
- Using Hand-Calculated Data to Print Graphics
- Using Software and Graphics
- Mixing Print Styles
- CHAP 5-MAINTENANCE AND TRANSPORTATION
- CHAP 6-TROUBLESHOOTING
- Troubleshooting
- Problems and Solutions
- The Printer Does Not Print
- The Printer Stops Printing
- The Printout is Spaced Incorrectly
- The Printout is Faint or Uneven
- The Printout is Not what You Expect
- Single Sheets Do Not Feed Properly
- Continuous Paper Does Not Feed Properly
- Cut Sheet Feeder Does Not Load Paper Correctly
- The Short Tear-Off Feature Does Not Work Properly
- Color Printing Is Not What You Expect
- Data Dump Mode
- CHAP 7-USING PRINTER OPTIONS
- CHAP 8-COMMAND SUMMARY
- APPENDIX A-TECHNICAL SPECIFICATIONS
- GLOSSARY
- INDEX

Commands Arranged by Topic
This section lists all the LQ-2550 commands. The numbers in the columns on the
right are the page numbers in Chapter 8 where a complete description of the
command can be found.
Printer Operation/Data Control
1
Code
1
Dee
1
Hex
1
Function
I
Pace1
ESC
@
64 40
Initialize Printer
8-8
DC1
17
11
Select Printer
8-8
1
DC3
I
19
I
13
I
Deselect Printer
I
8-9
I
I
DEL
I
127
I
7F
I
DeleteCharacter
I
8-9
I
ESC <
ESC
EM
ESC
U
60 3C Select Unidirectional Mode (one line)
8-9
25
19
Cut Sheet Feeder Control
8-10
85 55
Turn Unidirectional Mode
On/Off
8-10
1
ESC =
1
61
I
30
1
Set
MSB
to o
1
8-11
I
ESC
>
62 3E
Set MSB to 1
8-11
ESC
#
35 23
Cancel MSB
Control 8-l
1
1
BEL
I
7
I
07
I
Beeper I 8-12 I
1
CR
I
13
I
OD
I
Carriaoe Return
I
8-12
I
CAN 24 18 Cancel Line
8-12
Vertical Motion
1
FF
1
12
1
OC
1
FormFeed
1
8-13
(
~!
Cancel Skip Over Perforation
Set Vertical Tabs
ESC
b
1
98
1
62
1
Set Vertical Tabs in Channels
1
8-17
ESC
I
1
47
1
2F
1
Set Vertical Tab Channel
1
8-18