Table of Contents
Advertisement
Using the IBM 4975 Maintenance Information
Manual
Use the information in this manual as reference materi-
al when diagnosing machine failures.
Information
about maintenance procedures, diagnostic aids, and
operational descriptions is included.
Reference
M~thods
Reference methods used in this manual are:
Maintenance Analysis Procedures (MAPs)
. four-digit reference numbers
•
On-page.
MAP four-digit reference numbers are assigned to
location drawings and to specific maintenance proce-
dures. The four-digit number is the reference from the
MAP to the specific procedure within this manual.
1.
For example, 3352 is the procedure you refer to
for the removal, reinstallation, and adjustment of
the print head forms guide.
2.
The on-page references are: this page, see below,
and so on.
3.
For figures with named or numbered parts, the
reference is to the specific number or name of the
part (see Chapter 4).
When multiple procedures are required to perform a
specific removal or adjustment, the referenced proce-
dure is written as follows:
Step X. Remove the cover (3051).
This reference, 3051, is the procedure for removing the
cover.
Content Summary
This manual contains five chapters and three appendi-
ces, as follows:
Chapter
1,
''Introduction,''
Contains the specifications for the IBM 4975 Printer
Models 02L and 02R Printer and a brief description of
its major functional units. It also contains a description
of the tools necessary to service the printer.
Chapter 2, ''Locations,''
Contains a set of location drawings.
Chapter 3, "Maintenance Procedures, "
Contains maintenance procedures for repairing or
installing field replaceable units (FRUs) that the MAPs
call out.
Maintenance
procedures
include
service
checks,
removals, reinstalls, and adjustments. All procedures
have a four-digit number assigned as a reference from
the MAPs to that specific procedure in this manual.
Chapter 4, "Theory,"
Contains a theoretical discussion of the functional
units.
Chapter 5, ''Preventive Maintenance, "
Contains the lubrication procedures.
Appendix A, ''Error Indicator Lights, "
Contains a chart that explains the error light codes.
A
-I.
B " ... ;:..
D .
"
ppenulX ,
,.,.lrlng lagrams,
Contains the wiring diagrams.
Appendix C, "Glossary of Terms and Abbrevi-
.
"
atlons,
Contains definitions of terms and abbreviations that
are not common, but are used in this manual and in the
MAPs.
Safety Guidelines
vii
Advertisement
Table of Contents
