1240 Service Vol. II
PREFACE
The 062-71 24-02 manuals package consists of the 1240/1241 Service Manual (volumes 1 and 2)
and various addenda. The 1241 Service Manual Addendum, included in the two-volume set,
provides additional support for the 1241 Logic Analyzer. Each manual and addendum in the set has
its own part number starting with the prefix 070. Manual part numbers are located on the manual ti-
tle page.
The 124W124 1 Service Manual provides information that allows service technicians to check,
troubleshoot, repair, and maintain the 1240 and 1241 Logic Analyzers. When servicing a 1241
Logic Analyzer, use both volumes of the service manual and the 1241 Service Manual Addendum
to find complete troubleshooting information. For detailed operating instructions, refer to the
1240/124 1 Operator?s Manual.
This manual is designed for use by a qualified service technician having moderate experience with
digital circuitry. Familiarity with both TTL and ECL logic families is assumed. Familiarity with and the
ability to operate standard test instruments used on digital circuitry, such as an oscilloscope or log-
ic analyzer, is also assumed.
Troubleshooting of the 1240 and 1241 Logic Analyzers is based on the internal diagnostics. The di-
agnostics produce an on-screen error index message that allows the service technician to quickly
identify instrument failure. This manual translates these error indexes into a list of probable causes
for instrument failure and lists recommended repair actions.
This manual is divided into 12 sections, found in two volumes. Each section is preceded by a tabbed
page for quick reference. Other reference aids included:
Manual Table of Contents - refer to the Table of Contents at the beginning of the manual for a
breakdown of sections.
Section Table of Contents - refer to the Table of Contents at the beginning of each section for
a detailed breakdown of section contents.
Diagnostic Page-Bleed Tabs - refer to the Troubleshooting and Repair section for page-edge
bleed tabs that indicate, by their vertical page position, which module?s diagnostic information
is currently being accessed.
WHAT THIS MANUAL CONTAINS
VOLUME 1
Section 1 - GENERAL INFORMATION. Provides a basic description of the logic analyzers and an
overview of the instrument controls and indicators. It also describes the operating and diagnostic
menu layouts.
Section 2 - SPECIFICATIONS. Lists electrical, mechanical, and environmental specifications of
the logic analyzer.
Section 3 - OPERATING INFORMATION. Describes the logic analyzer?s power requirements, and
lists the probe, pack, and I/O connections. Refer to the 1240/1241 Operator?s Manualfor complete
operating instructions.
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