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PB250
Technical manual
Packard Bell PB250 Technical Manual
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Technical manual
(226 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Controls and Indicators
PB250 Power Supply Control Panel
Operation
PB250 Controls and Indicators
Power Supply Controls and Indicators
Flexowriter Keyboard
Flexowriter Controls and Indicators
Installation Requirements
PB250 Computer Space Requirements
Operating Procedure
Maintenance and Troubleshooting
Memory Mode
Command Mode
PROBE I Diagnostic Routine, Program Listing
PROBE I Diagnostic Routine (Flow Diagram)
PROBE I Diagnostic Routine
Command List of Operations and Codes
Serial Binary Flexowriter Format
Troubleshooting
Clocks and Pulse Counter Waveforms
Adjustment of Read Amplifier
Delay Line Adjustment
Test Point Functions
Test Points
Command Format
Data Format
Oscilloscope Format
Clock Distribution
Specifications
Parts List
PB250 Assembly
Logic Diagrams
Module Locations in Logic Diagrams
Schematic
PB250 Module Location Diagram
PB250 Component Installation Drawing
Engineering Drawings
Schematic
PB250 DC Power Wiring Installation Drawing
PB250 Connector Location Diagram
PB250 AC Power Schematic
Printed Wiring Assembly
Indicators Schematic
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TECHNICAL MANUAL
Volume
2
PBC 1002
Revision 1
1pb1
Packard Bell Ce>mputer
A SUBSIDIARY OF PACKARD BELL ELECTRONICS
1905 ARMACOST AVENUE • LOS ANGELES 25, CALIFORNIA
March 16ir 1962
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Table of Contents
Troubleshooting
MAINTENANCE AND TROUBLESHOOTING
29
TROUBLESHOOTING
92
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