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TDS3000C Series S ervice Manual

2-1

Theory of Operation

This chapter describes the electrical operation of the oscilloscope to the module

level. Figure 2--1 shows the oscilloscope module interconnections.

Power

supply

Battery bd

Main board

J500

J700

Front

panel

Input ports for

application

modules

J900

Attenuator circuit

Display

back light

inverter

power

LCD

Display

Ch 1

Ch 2

Ch 3

EXT

Ch 4

2-channel oscilloscopes

Battery

pack

J805

Front panel

USB Flash

Drive port

Fan

AC Line

4-channel oscilloscopes

J150

J180

J200

J170

J120

J910

J100

EXT

Ethernet

connector

Comm. module

connector

J860

J700

Figure 2- 1: TDS3000C series block diagram

Power Supply

The power supply converts AC line voltage to 15 VDC to power all internal

circuits. It also supplies power to charge the optional battery pack.

Table of Contents5
Figure 2- 1: TDS3000C Series Block Diagram39
Figure 4- 1: Pulling the Hub Pin59
Figure 4- 2: Releasing the Hub Assembly60
Figure 4- 3: Reinstalling a Hub Cover62
Figure 4- 4: Communication Module Guide63
Figure 4- 5: Rear Chassis Cables to the Main Board65
Figure 4- 6: Installing the Fan, Line Filter, and Line Power Cable67
Figure 4- 7: Installing the AC Line Filter and Shield68
Figure 4- 8: Installing the Line Filter and Line Power Cable69
Figure 4- 9: Main Board72
Figure 4- 10: Install the J500 Connector Clip74
Figure 4- 11: Taping Trigger Cable (Four-Channel Models Only) and Display Cable75
Figure 4- 12: Front Chassis76
Figure 4- 13: Display Module77
Figure 4- 14: Front-Panel Cable Routing78
Figure 4- 15: Front-Panel USB Port Removal79
Figure 4- 20: Primary Troubleshooting Procedure86
Figure 4- 21: AC Power Supply Troubleshooting Procedure87
Figure 4- 22: Module Isolation Troubleshooting Procedure88
Figure 6- 1: Exploded View, Front Case Half96
Figure 6- 2: Exploded View, LCD Display98
Figure 6- 3: Exploded View, Main Board100
Figure 6- 4: Exploded View, Circuit Board Assembly and Fan102
Figure 6- 5: Exploded View, Rear Case Half104

Brand	Tektronix
Model	TDS3034C
Category	Test Equipment
Language	English

Tektronix TDS3034C Service Manual

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