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Manuals
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Radio Shack Manuals
Floppy Disk Drive
TRS-8O
Service manual
Radio Shack TRS-8O Service Manual
Disk/video interface
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Also See for TRS-8O
:
Operator's manual
(58 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
1 Iintroduction
General
System Overview
Specifications
2 /Disassembly Instructions
Top Case
Main P.C. Board
Power Supply P.C. Board
Disk Drive Unit
Front Panel Assembly
3 /Preventive Maintenance
Adjustment
System Clock
System Clock Adjustment
4 /Theory of Operation
Cpu
Address Decoding and Bank Selection Circuit
Memory Map
I/O Map
Memory Map
Clock Generator Circuit
System Bus Interface Circuit
Crt Interface and Control Circuit
Display Timing Chart (40 Characters Mode)
Display Timing Chart (80 Characters Mode)
Waveform of Video Signal
Flicker Suppressing Circuit
Flicker Suppression Circuit
FDD Interface Block Diagram
Fdd Control Circuit
Data Separator
Pre-Compensation Circuit
Wait Control Circuit
Power Supply and Reset Circuit
5 /Troubleshooting
Troubleshooting Flowchart
Checking Procedure
6 /Exploded View and Parts List
RF Modulator
Mechanical/Assembly Parts
7 /P.C. Board Views and Schematic Diagram
Power Supply P.C. Board
Appendix Ai Installation of Additional Disk Drive Unit
Installation of FDD
Appendix B/Connector Pin Assignments
System BUS Connector
Rf Modulator
Clamp Base BK and Clamp Arm K Removals
Carrier BK Removal
Spindle Motor K Removal
2-2 Block Diagram
Exploded View
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See also:
Operator's Manual
!ladle IhaeK
•
ervlce
TRS-BO®
DISK/VIDEO INTERFACE
[AND EXPANSION FLOPPY DISK DRIVE UNIT)
l'
•
1
,
Catalog Numbers: 26-3806/3807
..
.;-:
' "
CUSTOM MANUFACTURED FOR RADIO SHACK. A DIVISION OF TANDY CORPORATION
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