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This technical reference manual is intended to help you get the most out of each of the emulation modes
supported by your HL-Series laser printer. It is divided into nine sections - this introductory section and one
section for each of the emulation modes. Each emulation mode section describes the software commands (the
escape sequences and control codes) that you can use to make the printer perform each of its available
functions. Some example programs are included to give you useful ideas.

CHAPTER I : FEATURES AND SPECIFICATIONS
Features, specifications, etc.
CHAPTER II : THEORY OF OPERATION
Basic operation of the mechanical system, the electrical system and the electrical
circuits, and their timing information.
CHAPTER III : DISASSEMBLY AND REASSEMBLY
Procedures for disassembling and reassembling the mechanical system.
CHAPTER IV : MAINTENANCE AND TROUBLESHOOTING
Reference values and adjustments, troubleshooting image defects, troubleshooting
malfunctions, etc.
APPENDICES :SERIAL NO. DESCRIPTIONS, CONNECTION DIAGRAMS, PCB CIRCUIT
DIAGRAMS.

CONTENTS
GENERAL DRAWING .................................................................................. 1
MAIN PCB DRAWING (HL-820/1020/1040)................................................. 2
MAIN PCB DRAWING (HL-1050)................................................................. 3
AC CORD / PACKING MATERIAL DRAWING............................................. 4
1. DRIVE UNIT.......................................................................................... 5
2. SCANNER UNIT ................................................................................... 5
3. MP SHEET FEEDER ............................................................................ 6
4. FIXING UNIT......................................................................................... 6
5. COVERS............................................................................................... 7
6-1. MAIN PCB <HL-820/1020>................................................................... 8
6-2. MAIN PCB <HL-1040 OTHERS>.......................................................... 8
6-3. MAIN PCB <HL-1040 ISRAEL> ............................................................ 8
6-4. MAIN PCB <HL-1050 OTHERS>.......................................................... 9
6-5. MAIN PCB <HL-1050 ISRAEL> ............................................................ 9
7. PANEL SENSOR PCB........................................................................ 10
8. POWER SUPPLY PCB....................................................................... 10
9. HIGH VOLTAGE POWER SUPPLY.................................................... 11
10. AC CORD............................................................................................ 11
11. ACCESSORIES .................................................................................. 12
12. PACKING MATERIALS....................................................................... 12

GLOSSARY
CHAPTER 1 INTRODUCTION
1. ABOUT THE MANUAL----------------------------------------------------------------------------------- 3
2. AREAS OF USE------------------------------------------------------------------------------------------ 4
CHAPTER 2 PCL
1. COMMAND LIST------------------------------------------------------------------------------------------ 7
2. INTRODUCTION----------------------------------------------------------------------------------------10
3. CONTROLLING THE PRINTER ---------------------------------------------------------------------11
4. JOB CONTROL-----------------------------------------------------------------------------------------15
5. USING FONTS-------------------------------------------------------------------------------------------33
6. USING GRAPHICS--------------------------------------------------------------------------------------65
7. MACROS--------------------------------------------------------------------------------------------------85
8. STATUS READBACK----------------------------------------------------------------------------------91
9. INDEX------------------------------------------------------------------------------------------------------99
CHAPTER 3 PCL5C
1. INTRODUCTION----------------------------------------------------------------------------------------- 3
2. COLOR MODES----------------------------------------------------------------------------------------- 4
3. COLOR PALLETS--------------------------------------------------------------------------------------10
4. COLOR GRAPHICS------------------------------------------------------------------------------------13
5. ENHANCE OUTPUT------------------------------------------------------------------------------------15
6. HP-GL/2---------------------------------------------------------------------------------------------------17
7. INDEX-----------------------------------------------------------------------------------------------------19
CHAPTER 4 HP-GL/2 GRAPHICS LANGUAGE
1. COMMAND LIST------------------------------------------------------------------------------------------ 4
2. INTRODUCTION----------------------------------------------------------------------------------------- 6
3. TERMINOLOGY------------------------------------------------------------------------------------------ 7
4. COMMAND SYNTAX ------------------------------------------------------------------------------------ 9
5. THE HP-GL GRAPHICS WINDOW -----------------------------------------------------------------10
6. PREPARING TO PRINT GRAPHIC IMAGES------------------------------------------------------11
7. COMMANDS---------------------------------------------------------------------------------------------12
8. INDEX-----------------------------------------------------------------------------------------------------52
CHAPTER 5 PJL PRINTER JOB LANGUAGE
1. INTRODUCTION----------------------------------------------------------------------------------------- 4
2. HOW TO USE PJL -------------------------------------------------------------------------------------- 8
3. COMMAND GROUP------------------------------------------------------------------------------------- 9
4. KERNEL COMMANDS---------------------------------------------------------------------------------10
5. JOB SEPARATION COMMANDS -------------------------------------------------------------------13
6. ENVIRONMENT COMMANDS------------------------------------------------------------------------15
7. STATUS READBACK COMMANDS----------------------------------------------------------------30
8. DEVICE ATTENDANCE COMMANDS -------------------------------------------------------------45
9. INDEX------------------------------------------------------------------------------------------------------48
CHAPTER 6 EPSON FX-850
1. COMMAND LIST------------------------------------------------------------------------------------------ 3
2. INTRODUCTION----------------------------------------------------------------------------------------- 5
3. EMULATION DETAILS ---------------------------------------------------------------------------------- 6
4. TERMINOLOGY ------------------------------------------------------------------------------------------ 7
5. CONTROLLING THE PRINTER ---------------------------------------------------------------------- 8
6. COMMANDS ---------------------------------------------------------------------------------------------- 9
7. INDEX------------------------------------------------------------------------------------------------------30
CHAPTER 7 IBM PROPRINTER XL
1. COMMAND LIST------------------------------------------------------------------------------------------ 3
2. INTRODUCTION----------------------------------------------------------------------------------------- 5
3. EMULATION DETAILS ---------------------------------------------------------------------------------- 6
4. NOTATION USED IN THIS EMULATION DESCRIPTION--------------------------------------- 7
5. COMMANDS ---------------------------------------------------------------------------------------------- 8
6. INDEX------------------------------------------------------------------------------------------------------21
CHAPTER 8 BARCODE CONTROL
1. INTRODUCTION----------------------------------------------------------------------------------------- 3
2. PRINT BAR CODES OR EXPANDED CHARACTERS ----------------------------------------- 4
3. DEFINITION OF PARAMETERS---------------------------------------------------------------------- 5
4. EXAMPLE PROGRAM LISTINGS--------------------------------------------------------------------10
CHAPTER 9 HP-GL GRAPHICS LANGUAGE
1. COMMAND LIST------------------------------------------------------------------------------------------ 3
2. INTRODUCTION----------------------------------------------------------------------------------------- 4
3. COMMANDS ---------------------------------------------------------------------------------------------- 6
4. INDEX------------------------------------------------------------------------------------------------------27
APPENDIX A COMPARISON LIST
APPENDIX B FLASH/PCMCIA CARD COMMANDS
APPENDIX-C HBP MODE COMMANDS
APPENDIX D REFERENCE LIST OF MX-2000 SERIES UNIQUE
COMMANDS