Tektronix TCP300 Series - Replacing the Fan; Figure 27: Removing the AC Power Connector

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Disassembly

Replacing the Fan

If you need to replace the fan, you must ﬁrst detach the rear panel of the ampliﬁer

from the chassis to gain access to the fan:

1. Remove the 2 Phillips s crews that attach the AC power connector to the rear

panel as shown. (See Figure 27.)

Figure 27: Removing the AC power connector

70 TCPA300/400 Ampliﬁers and TCP300/400 Series Current Probes Service Manual

Main Page

Service Manual3
Table of Contents7
General Safety Summary13
Service Safety Summary16
Compliance Information17
- EMC Compliance17
- Environmental Considerations19
Preface21
- Manual Conventions21
Performance Veriﬁcation Overview23
- Performance Veriﬁcation and Functional Checks23
- Table 1: Ampliﬁer Checks23
- Table 2: Probe Performance Veriﬁcation Checks23
- Test Procedure Conditions24
- Equipment Preparation24
TCPA300 and TCPA400 Performance Veriﬁcation25
- Equipment Required25
- Table 3: Required Test Equipment25
- Making DC Current Loops26
- Front-Panel Display27
- Figure 1: Check LED Functionality27
- DC Gain Accuracy28
- Figure 2: Equipment Setup for DC Gain Accuracy Test28
- Table 4: Equipment Settings29
- Table 5: DC Gain Accuracy Test for the TCPA300 and TCPA40029
- Bandwidth31
- Figure 3: Bandwidth Test Setup31
- Table 6: Equipment Settings for Bandwidth Check31
- Table 7: TCPA300 Bandwidth Measurements34
- Table 8: TCPA400 Bandwidth Measurements34
- AC Coupling35
- Figure 4: AC Coupling Test Setup35
- Degauss36
- Figure 5: Setup for Degaussing the Current Probe36
- Table 9: TCPA300 and TCPA400 AC Coupling Measurements36
- Current Overload Test (TCPA300 Only)37
- Figure 6: Overload Test Setup37
- Table 10: Maximum Current Ratings for TCPA300-Compatible Probes38
- TCPA300 Ampliﬁer Test Record39
- TCPA400 Test Record40
TCP305 and TCP312 Performance Veriﬁcation41
- Required Test Equipment42
- Table 11: Required Test Equipment42
- DC Gain Accuracy43
- Figure 7: DC Gain Accuracy Test Setup for TCP305 and TCP31243
- Table 12: Equipment Settings for DC Gain Accuracy44
- Table 13: DC Gain Accuracy Test for the TCP305 and TCP31245
- Rise Time46
- Figure 8: Rise Time Test Setup for the TCP305 and TCP31246
- Table 14: Equipment Settings for Rise Time47
- Bandwidth48
- Figure 9: Bandwidth Test Setup for TCP305 and TCP31248
- Table 15: Equipment Settings for Bandwidth49
- Table 16: Bandwidth Test for the TCP305 and TCP31250
- TCP305 Current Probe Test Record51
- TCP312 Current Probe Test Record52
TCP303 and TCP404XL Performance Veriﬁcation53
- Equipment Required54
- Table 17: Required Test Equipment54
- DC Gain Accuracy55
- Figure 10: DC Gain Accuracy Test Setup for the TCP303 and TCP404XL55
- Table 18: Equipment Settings for DC Gain Accuracy55
- Table 19: DC Gain Accuracy Test Worksheet for the TCP303 and TCP404XL57
- Rise Time58
- Figure 11: Rise Time Test Setup for the TCP303 and TCP404XL58
- Table 20: Equipment Settings for Rise Time59
- Bandwidth (TCP303)61
- Figure 12: Bandwidth Test Setup for TCP30361
- Table 21: Equipment Settings for Bandwidth62
- Bandwidth (TCP404XL)63
- Table 22: Bandwidth Test for the TCP30363
- TCP303 Current Probe Test Record64
- TCP404XL Current Probe Test Record65
Adjustment Procedures Overview67
Table 23: Ampliﬁer and Probe Adjustments67
TCPA300 and TCPA400 Ampliﬁer Adjustments68
- Required Test Equipment68
- Accessing the Adjustments68
- Table 24: Required Test Equipment68
- TCPA300 Ampliﬁer69
- Figure 13: Ampliﬁer Adjustments69
- Table 25: TCPA300 Gain Adjustments69
- TCPA400 Ampliﬁer70
- Figure 14: Gain Adjustment Locations70
- Table 26: TCPA400 Gain Adjustments70
TCP305 and TCP312 Adjustments71
- Required Test Equipment71
- Accessing the Adjustments71
- Figure 15: TCP305 and TCP312 DC Gain Adjustment Location71
- Table 27: Required Test Equipment71
- TCP305 and TCP312 DC Gain Adjustment72
- Table 28: Settings for DC Gain Adjustment72
- Figure 16: DC Gain Adjustment Setup for TCP305 and TCP31273
- Table 29: DC Gain Accuracy Adjustments for the TCP305 and TCP31273
TCP303 and TCP404XL Adjustments74
- Required Test Equipment74
- Table 30: Required Test Equipment74
- Adjustment Locations75
- TCP303 and TCP404XL Transient Response and Coarse Gain Adjustment75
- Figure 17: TCP303 and TCP404XL Adjustment Locations75
- Figure 18: TCP303 and TCP404XL Transient Response and Coarse Gain Adjustment Setup76
- Table 31: Settings for Transient Response and Preliminary Gain Adjustments77
- DC Gain Adjustment80
- Figure 19: DC Gain Accuracy Adjustment Setup80
- Table 32: Equipment Settings for DC Gain Accuracy81
- Table 33: DC Gain Accuracy Adjustments for the TCP303 and TCP404XL81
Maintenance83
- Service Strategy83
- Preventive Maintenance83
Disassembly84
- Ampliﬁers84
- Equipment Required84
- Table 34: Equipment Required84
- Removing the Outer Case and Internal Covers85
- Figure 20: Removing the Case from the Ampliﬁer85
- Figure 21: Removing the Right-Side Inner Panel86
- Figure 22: Removing the Left-Side Inner Panel87
- Replacing the Front Panel Assembly88
- Figure 23: Disconnecting the Front-Panel Assembly88
- Replacing the Ampliﬁer Board89
- Figure 24: Removing the Three Heat Sink Clips89
- Figure 25: Removing the Ampliﬁer Board90
- Replacing the Power Supply91
- Figure 26: Replacing the Power Supply91
- Replacing the Fan92
- Figure 27: Removing the AC Power Connector92
- Figure 28: Removing the Fan93
- Probes94
- Equipment Required94
- Table 35: Equipment Required94
- TCP305 and TCP31295
- Figure 29: Removing the Strain Relief Boot95
- Figure 30: Removing the Top Half of the Probe96
- Figure 31: Removing the Probe Slide96
- Figure 32: Removing the Current Transformer97
- Figure 33: Removing the Circuit Board and Cable Assembly98
- TCP303 and TCP404XL99
- Figure 34: Removing the Handle99
- Figure 35: Removing the Current Transformer100
- Figure 36: Removing the Circuit Board and Cable101
Isolating Hardware Faults102
- Table 36: Ampliﬁer Hardware Faults102
- Table 37: Probe Hardware Faults102
- Determining the Ampliﬁer Firmware Version Number103
- Figure 37: Displaying the Ampliﬁer Firmware Version Number103
Replaceable Parts105
- Parts Ordering Information105
- Using the Replaceable Parts List105
Ampliﬁer Replaceable Parts106
Figure 38: TCPA300 and TCPA400 Replaceable Parts106
Table 38: TCPA300 and TCPA400 Replaceable Parts List107
Table 39: Power Cord Identiﬁcation108
Figure 39: TCPA300 and TCPA400 Standard Accessories109
Figure 40: TCPA300 and TCPA400 Optional Accessories110
Current Probes Replaceable Parts111
Table 42: TCP305 and TCP312 Replaceable Parts List112
Figure 42: TCP303 Replaceable Parts113
Table 43: TCP303 Replaceable Parts List114
Figure 43: TCP404XL Replaceable Parts115
Table 44: TCP404XL Replaceable Parts List116

Tektronix TCP300 Series - Replacing the Fan; Figure 27: Removing the AC Power Connector

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