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Manuals
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Tandy Manuals
Desktop
1000 HD
Service manual supplement
Tandy 1000 HD Service Manual Supplement
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Section 4 Troubleshooting
Introduction
Scope of the Document
Major Features
Control
Capability
Industrystandardlnterfacecompatibility
Compact Size
Functional Description
Product Specifications
Introduction
Electrical and Operational
Operational Specifications
Power Requirements
Environmental Specifications
Preinstallation Checkout
Mounting the Dust Cover
Unpacking the Drive
Section Operation
Freeair Flow
Connectors
J3 Power Connector
Input Control Signals
Interface Line Descriptions
Write Gate
Output Control Signals
Select Status
Data Transfer Signals
Shipping Pack and Handling
Test Equipment
Test Points
TROUBLESHOOTING Gulde
Troubleshooting Guide
Index Assembly
Time Scale
Front Panel
Frame Assembly
Bezel Assembly
List of Tables
List of Illustrations
Section Introduction
Documentscope
Description
Wd11C00 17 Logic Array
Bios ROM
Wd10C20
Sector Buffer RAM
Reset Logic
Section2 Specifications
General
Electrical
Host Interface
Drive Interface
Wd10C20
Power
Interface Connections
Organization
Drive Lnterface
Drive Control
Interface Timing
Hardware Status
Execute Drive Diagnostic
Theory of Operation
Detailed Block Diagram
Bus Protocol
Exception Handling
Section VII Installation
Block Description
Jumper Locations
External
Organization
Diagram
Synchronization
Phase-Locked
Phase-Frequency
Charge Pumps
Filter
Voltage Controlled Osctllator
Self Adjustmant
Read Data
Crystal Oscillator
Write
Dlydr, Tfullwin
Application
External
Capacitors
Inductor
Ferrite
Varactor
Shr
Crystal
Ipll
Specification
Phase Decision
Specification
Pin Designation
Pin Description
Setup and Hold Times
Radio Shack
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,.'
0
U
t .../'
TANDY'
I
erutGe
/
MamuaI
Tandy
1000'H
D
Service Manual
Cat.
No.25-1001
Supplement to the Tandy'1000
Service Manual
(car.
No.
25.1000)
CUSTOM MANUFACTURED
FOR RADIO SHACK,
A
DIVISION OF TANDY CORPORATION
Table of
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Table of Contents
Troubleshooting
SECTION 4 TROUBLESHOOTING
47
TROUBLESHOOTING GUlDE
79
TROUBLESHOOTING GUIDE
80
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