Brother MFC 1870MC, Service Manual, Page: 3 / 217

PREFACE
This publication is a Service Manual covering the specifications, construction, theory of opera-
tion, and maintenance of the Brother facsimile equipment. It includes information required for
field troubleshooting and repair—disassembly, reassembly, and adjustment—so that service
personnel will be able to understand equipment function, to rapidly repair the equipment and
order any necessary spare parts.
To perform appropriate maintenance so that the facsimile equipment is always in best condition
for the customer, the service personnel must adequately understand and apply this manual.
This manual is made up of six chapters and appendices.
CHAPTER
I
. GENERAL DESCRIPTION
CHAPTER II . INSTALLATION
CHAPTER III . THEORY OF OPERATION
CHAPTER IV . DISASSEMBLY/REASSEMBLY AND LUBRICATION
CHAPTER V . MAINTENANCE MODE
CHAPTER VI . ERROR INDICATION AND TROUBLESHOOTING
APPENDICES Circuit Diagrams
This manual describes the model and its versions to be destined for major countries. The specifications
and functions are subject to change depending upon each destination.