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8560
MULTI-USER SOFTWARE
DEVELOPMENT UNIT
SERVICE;
COMMITTED TO EXCELLENCE
WARNING
THE FOLLOWING SERVICING INSTRUCTIONS
ARE FOR USE BY QUALIFIED PERSONNEL ONLY.
TO AVOID PERSONAL INJURY, DO NOT
PERFORM ANY SERVICING OTHER THAN THAT
CONTAINED IN OPERATING INSTRUCTIONS
UNLESS YOU ARE QUALIFIED TO DO SO.
PRELIMINARY
PLEASE CHECK FOR CHANGE INFORMATION
AT THE REAR OF THIS MANUAL.
Tektronix, Inc.
P.O. Box 500
Beaverton, Oregon 97077 Serial Number - - - - - - -
061-2581-00
Product Group 61 First Printing DEC 1981
8560 MUSDU Service
PREFACE
RELATIONSHIP TO OTHER EQUIPMENT
The 8560 Multi-User Software Development Unit (MUSDU) is used primarily in
conjunction with the 8540 Integration Unit. Together, the two units comprise
a complete microcomputer development lab. Uses of this lab are described in
separate user manuals.
MANUAL APPLICATION
This service manual describes the 8560 Multi-User Software Development Unit
(MUSDU) in sufficient detail to permit service technicians to perform on-site
board-level repairs.
ABOUT THIS MANUAL
This manual introduces you to the 8560 MUSDU Multi-user Software Development
Unit (MUSDU). The manual also describes hardware operations within the 8560
at a block diagram level.
This Manual is organized into 22 sections. A brief description of each
section follows:
Section This section contains general information and an introduction to
the 8560 MUSDU.
Section 2 This section contains the 8560 specifications.
Section 3 This section contains a brief description of front and rear
panel controls, connectors, and indicators. It also contains
board configuration drawings and tables, showing the default
strap and jumper positions for each board.
Section 4 This section describes the LSI-11/23 Processor.
Section 5 This section describes the Utility board.
Section 6 This section describes the System Memory (RAM) board.
Section 7 This section describes the 1/0 Processor board.
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Safety Summaries - 8560 MUSDU Service
SAFETY PRECAUTIONS
Grounding the Product
The 8560 is grounded through the grounding conductor of the power cord. To
avoid electrical shock, plug the power cord into a properly wired receptacle
before connecting to the equipment's power input terminals. A protective
ground connection by way of the grounding conductor in the power cord is
essential for safe operation.
Use the Proper Power Cord
Use only the power cord and connector specified for your product.
Use only a power cord that is in good condition.
Refer cord and connector changes to qualified service personnel.
Use the Proper Fuse
To avoid fire hazard, use only the fuse specified in the parts list for your
product. Be sure the fuse is identical in type, voltage rating, and current
rating.
Refer fuse replacement to qualified service personnel.
Do Not Operate in Explosive Atmospheres
To avoid explosion, do not operate the 8560 in an atmosphere of explosive
gases.
Do Not Remove Covers or Panels
To avoid personal injury, do not remove covers or panels from the 8560. Do
not operate the 8560 without the covers and panels properly installed.
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Safety Summaries - 8560 MUSDU Service
SERVICING SAFETY SUMMARY
FOR QUALIFIED SERVICE PERSONNEL ONLY
(Refer also to the preceding Operators Safety Summary)
DO NOT SERVICE ALONE
Do not perform internal service or adjustment on the 8560 unless another
person capable of rendering first aid and resuscitation is present.
USE CARE WHEN SERVICING WITH POWER ON
Dangerous vol tages exist at several points in the 8560. To avoid