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TDS 220
Tektronix TDS 220 Service Manual
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Theory of Operation
TDS 200 Series Digital Oscilloscope Service Manual
3
–
3
Extension
Module
CH1
P53
2
P3
J603
LCD
5
EXT
TRIG
J51
J52
J53
DC In
Display Control
5
0
J601
J2
J4
J3
RS232
GPIB
CENTRONICS
Front Panel
A1 Main
Display
CH2
P131
Backlight
Probe Comp
Signal
7
GND
GND
Backlight Power
3
AC Line In
Power Supply
AC Line
DC Out
& Line
T
rigger
J602
J604
J1
Probe Comp
GND
J605
J202
J131
12
J902
J90
1
9
24
25
Figure 3
–
1: Module-level block diagram (two channel)
34
36
Table of Contents
Section 1
6
Table of Contents
6
Table 1-1: Specifications
15
Table 1-2: General Specifications
19
Figure 2-1: Routing the Power Cord and Security Cable
25
Figure 2-2: Installing an Extension Module
26
Table 2-1: Factory Setup Settings
30
Figure 3-1: Module-Level Block Diagram (Two Channel)
35
Figure 3-2: Module-Level Block Diagram (Four Channel)
36
Table 5-1: Required Equipment
47
Figure 5-1: Service Menu Enable Button
48
Figure 5-2: Adjustment Setups
49
Table 5-2: TDS 210 and TDS 220 Adjustment Steps
51
Table 5-3: TDS 224 Adjustment Steps
53
Preparation
57
Preventing ESD
57
Inspection and Cleaning
58
Table 6-1: Internal Inspection Check List
59
Removal and Installation Procedures
61
Section 2
63
Table 6-2: List of Procedures
63
Figure 6-1: Removing the Rear Feet
64
Rear Feet
64
Figure 6-2: Installing the Rear Feet
65
Figure 6-3: Installing a Front-Case Label
66
Front-Case Label
66
Figure 6-4: Installing a New Rear-Case Label
67
Rear-Case Label
67
Figure 6-5: Removing the Handle
68
Handle
68
Figure 6-6: Installing the Handle
69
Power Button
69
Rear Case
70
Figure 6-7: Removing and Installing the Rear Cover
71
Figure 6-8: Removing and Installing the Front Feet
72
Front Feet
72
EMI Clips
73
Figure 6-9: Removing and Installing the EMI Clips
73
Figure 6-10: Removing the Flip Stand
74
Flip Stand
74
Figure 6-11: Installing the Flip Stand
75
Figure 6-12: Line Fuse Location
76
Power Line Fuse
76
Figure 6-13: Removing the Power Supply Module
77
Power Supply Module
77
Figure 6-14: Installing the Power Supply Module
78
Front Panel Knobs
79
Figure 6-15: Removing and Installing the Internal Assembly
80
Internal Assembly
80
Figure 6-16: Installing the Copper Mesh Grounding Tube
81
Main Board Module
82
Figure 6-17: Main Board Removal
83
Display Module
84
Figure 6-18: Main Board Installation
84
Figure 6-19: Removing the Display Module
85
Figure 6-20: Installing the Display Module
86
Front Panel Module
86
Figure 6-21: Removing the Front Panel Module
87
Figure 6-22: Installing the Front Panel Module
88
Figure 6-23: Removing and Installing the Keypad
89
Keypad
89
Display Shield
91
Figure 6-24: Removing the Display Shield
91
Figure 6-25: Installing the Display Shield
92
Front Case
93
Troubleshooting
94
Figure 6-26: Measuring the Backlight Voltage
97
Table 6-3: List of Error Codes
102
Repackaging Instructions
104
Options
105
Electrical Parts List
107
Diagrams
109
Parts Ordering Information
111
Replaceable Parts
111
Table 10-1: Parts List Column Descriptions
112
Using the Replaceable Parts List
112
Table 10-2: Manufacturers Cross Index
113
Table 10-3: Replaceable Parts List
114
Figure 10-1: Exploded Diagram
118
Table 10-4: Replaceable Standard Accessories
119
Table 10-5: Replaceable Optional Accessories
119
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Brief Introduction
6 pages
4
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Tektronix TDS 220 Specifications
General
Brand
Tektronix
Model
TDS 220
Category
Test Equipment
Language
English
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