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Epson LQ-300 User Manual - Page 73

Chap 3-troubleshooting

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Chapter 3 Troubleshooting Problems and Solutions 3-2 Power Supply 3-2 Power is not being supplied 3-2 Printing 3-3 The printer does not print 3-3 The print is faint or uneven 3-4 Dots are missing in printed characters or graphics . . . . . 3-5 Printed characters are not what you expected 3-5 The print position is not what you expected 3-6 Paper Handling 3-7 Single sheets do not feed properly 3-7 Continuous paper does not feed properly 3-8 Options 3-9 When you use the cut-sheet feeder, the paper does not feed properly 3-9 Switching between the cut-sheet feeder and the push tractor does not work properly 3-11 Using the pull tractor with the push tractor, continuous paper does not feed properly 3-11 With the color upgrade installed, the printer does not operate properly 3-11 Troubleshooting 3-1

Section	Page
FRONT MATTER	1
Printer Parts	2
TABLE OF CONTENTS	9
INTRODUCTION	12
Features	12
Energy Star Compliant	13
Finding Your Way Around	13
Warnings, Cautions, and Notes	14
CHAP 1-SETTING UP THE PRINTER	17
Unpacking the Printer	18
Choosing a Place for the Printer	19
Assembling the Printer	20
Installing the Knob	20
Attaching the Paper Supports	21
Installing the Ribbon Cartridge	22
Plugging in the Printer	25
Running the Self Test	26
Connecting the Printer to Your Computer	29
Connecting to the Parallel Interface	30
Connecting to the Serial Interface	31
Setting Up Your Software	32
Microsoft Windows3.1 and All Windows Programs	33
Using Non- Windows Software	34
CHAP 2-USING THE PRINTER	35
Using the Control Panel	36
Lights and Buttons	36
Selecting Fonts	38
Printing on Single Sheets	39
Loading Single Sheets	39
Getting the Results You Expect	40
Printing on Continuous Paper	41
Printing in the Push Tractor Position	42
Printing in the Pull Tractor Position	47
Printing on Special Paper	51
Adjusting the Paper-thickness Lever	51
Multi-part Forms	53
Labels	54
Envelopes	55
Using the Printer Setting Mode	56
Printer Setting Descriptions	57
Changing the Printer	59
Installing and Using Options	63
Single-bin Cut-Sheet feeder	63
Pull Tractor Unit	67
Color Upgrade Kit	69
CHAP 3-TROUBLESHOOTING	73
Problems and Solutions	74
Power Supply	74
Power is Not Being Supplied	74
Printing	75
The Printer Does Not Print	75
The Print is Faint or Uneven	76
Dots Are Missing in Printed Characters Or Graphics	77
Printed Characters Are Not What You Expected	77
The Print Position is Not What You Expected	78
Paper Handling	79
Single Sheets Do Not Feed Properly	79
Continuous Paper Does Not Feed Properly	80
Options	81
When You Use Cut-sheet Feeder, the Not Feed Properly	81
Switching Between the Cut-sheet Feeder Does Not Work Properly	83
Using the Pull Tractor With the Push Tractor,Continous Paper Does Not Feed Properly	83
With the Color Upgrade Installed,the Printer Does Not Operate Properly	83
APPENDIX	85
Printer Specifications	86
Printing	86
Paper	88
Mechanical	90
Electrical	91
Environmental	91
Safety Approvals	92
Interface Specifications	92
Parallel Interface	92
Serial Interface	92
Command Summary	94
Sending Printer Commands	94
Using the Command Summary	94
General Operation	95
Paper Feeding	95
Page Format	95
Print Position Motion	96
Font Selection	97
Font Enhancement	98
Spacing	99
Character Handing	100
Bit Image	102
Graphics	103
Color Printing	103
Character Tables	104