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

Control key chart
Some application programs can use control key codes for decimal values
0 through
27.
The table below gives you the proper values. The Control
Key column indicates that you press the control key at the same time
you press the key for the letter or symbol in that column. For example,
you press the control key and A at the same time to send the value
1.
Note:
Some application programs
that
use this system cannot use
Control-@, and many programs use the control keys for other
purposes.
Dec. Hex.
0 00
1
01
2 02
3
03
4
04
5
05
6 06
7
07
8 08
9 09
10
OA
11
OB
12
oc
13
OD
Cntl. Key
z
B
C
D
E
:
H
f
K
tl
Dec. Hex.
Cntl. Ke
14
OE
15
OF
:
16 10
17
11
18
12
P
19 13
S
20
1421
15
z
22 16
V
23 17
W
24 18
X
25 19
Y
26
1A
Z
27
1B
[
8-4
Command Summary