Table of Contents
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Service Sheets
The service sheets in this manual are organized in alpha-numeric order and are indexed with
tabs to make it easy to locate a specific service sheet. Each of the service sheets contain the
following information:
Circuit Description (where practical)
n
Troubleshooting Hints (where practical)
n
Replaceable Parts Lists
n
Block Diagram (where practical)
n
Component Location Illustrations
n
Schematic Diagrams
n
Repair Procedures
Repair procedures are included for use in removing and replacing assemblies for repair. They
are located in the following sections:
Front-Panel LED Replacement
n
Tab: AlAl Keyboard
Tab: AlAl Keyboard
CRT Replacement
n
Tab: AlA High Voltage Regulator
IF-Display Section Internal Fuse Replacement
n
Tab: AlA f15 V Regulator and High Voltage
Major Assembly and Component Locations
Major assembly and component location illustrations for the IF-Section are located at the rear
of this manual.
Troubleshooting
Troubleshooting information for the IF-Section is divided into two levels as follows:
Section Level
n
IF Overall Block Diagrarn
Al Display Section Block Diagram
A3 Digital Storage Troubleshooting
A4 IF-Section Troubleshooting
Assembly Level
n
Most assemblies have troubleshooting hints immediately following their circuit
descriptions. Troubleshooting information is also located on assembly-level block
diagrams, notes, and schematics.
2 If-Display Section General Information
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