HL-1240, 1250 Laser Printers Service Manual
This service manual contains basic information required for after-sales service of the laser printer
(here- in-after referred to as "this machine" or "the printer"). This information is vital to the service
technician to maintain the high printing quality and performance of the printers.
This service manual covers the HL-1240 and HL-1250 laser printers.
This manual consists of the following chapters:
CHAPTER I : GENERAL
Features, specifications, etc.
CHAPTER II : INSTALLATION AND BASIC OPERATION
CHAPTER III : THEORY OF OPERATION
Basic operation of the mechanical system, the electrical system and the electrical
circuits, and their timing information.
CHAPTER IV : DISASSEMBLY AND REASSEMBLY
Procedures for disassembling and reassembling the mechanical system.
CHAPTER V : MAINTENANCE
Periodical replacements parts, consumable parts, etc.
CHAPTER VI : TROUBLESHOOTING
Reference values and adjustments, troubleshooting image defects, troubleshooting malfunctions, etc
APPENDICES :SERIAL NO. DESCRIPTIONS, DRUM LIFE & PAGE COUNTER, CONNECTION DIAGRAMS, PCB CIRCUIT
DIAGRAMS.
A thorough understanding of this printer, based on information in this service manual, is required for maintaining its print quality performance and for improving the practical ability to find the cause of problems.
FORMAT: High resolution PDF document!
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