Table of Contents
Advertisement
DIDS-402-2AMI3
CHAPTER 5
MAINTENANCE
5-1 MAINTENANCE CONCEPT
Because of the complexity of the Display Terminal, it is impractical in a
manual of this size to detail the solution to each and every malfunction which could
conceivably occur.
To repair a malfunction, first obtain a thorough understanding
of circuit operation by reading the theory of operation descriptions contained in
Chapter 4.
Assisted by this knowledge. the technician should rely on the logic
and schematic diagrams contained in Chapter 7 to isolate the malfunction to an
indi vidual integrated circuit.
5-2 TEST EQUIPMENT REQUIRED
Test equipment recommended for troubleshooting the Display Terminal
is listed in table 5-1.
The equipment listing is provided for the purpose of
illustrating the test equipment characteristics required to perform maintenance
on the high-speed digital circuitry.
Either the suggested equipment or its
equivalent may be employed.
Table 5-1.
Test Equipment Required
Function and Type or Model
Characteristics
Voltmeter, Simpson 260
Voltage Range:
dc
0-5000 v
ac
0-5000 v
Current Range:
0-50 f.1a
0-50 rna
Oscilloscope, Type 454
Band Width:
dc to 150 MHz
Sweep Range: 0.05 f.1s/div to 5s/div
Sweep Delay:
1 f.1s to 50 s
5-1
Advertisement
Chapters
Table of Contents
