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Portable Generator
E8241A
Agilent Technologies E8241A Service Guide
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Replaceable P
arts
Major Assemblies
3-
14
Main Chassis Bottom V
iew
T
able
3-3
Main Chassis Bottom V
iew
Reference
Designator
Description
Qty
Part Number
A31
Motherboard
1
E8251-60004
188
190
Table of Contents
Table of Contents
4
Troubleshooting
14
Before Troubleshooting
15
ESD Information
15
Getting Started with Troubleshooting
16
To Run Self-Test
16
ILT-1 Power Supply Failure and Self-Test
17
ILT-2 Temperature Related Power Supply Failure
18
ILT-3 A18 CPU Turn-On Test
19
ILT4 Front Panel Display Troubleshooting
22
Symptom: Dark Display
22
Symptom: Bright Display Without Characters
23
Symptom: Hardkeys or Softkeys Not Functioning
25
Symptom: RPG Knob Not Functioning
27
Symptom: Screen Saver Not Functioning
27
Self-Test Failures and Related Troubleshooting
28
Troubleshooting Assembly Level Problems
30
Power Supplies
30
Self-Tests 2Xx: A5 Sampler Self-Test Errors
37
Self-Tests 3Xx: A7 Reference (Standard) Self-Test Errors
39
Self-Tests 4Xx: A8 Output Self-Test Errors
40
Self-Tests 6Xx: A9 YIG Driver Self-Test Errors
42
Self-Tests 7Xx: A6 Frac-N Self-Test Errors
44
Self-Tests 9Xx: A10 ALC Self-Test Errors
47
Self-Tests 10Xx: A7 Reference (Option UNJ) Self-Test Errors
49
Self-Tests 11Xx: A18 CPU Self-Test Errors
51
Self-Tests 12Xx: A26 MID Self-Test Errors
53
Self-Tests 13Xx: A11 Analog/Pulse Modulation Generator Self-Test Errors
56
Troubleshooting Unlocks
59
508 A6 Frac-N Loop Unlock
59
513 1 Ghz out of Lock
59
514 Reference Oven Cold
59
515 10 Mhz Signal Bad
59
520 Sampler Unlocked
60
521 YO Loop Unlocked
60
625 Internal Pulse Generator Unlock
60
626 Internal Mod Source Unlock
61
Troubleshooting Unlevels
62
Troubleshoot and Correct any Unlock Problems before Troubleshooting Unleveled Problems
62
Troubleshooting Adjustment Problems
66
Troubleshooting ADC Adjustment Failures
68
Troubleshooting Performance Test Problems
69
Troubleshooting the RF Path
71
ALC and RF Problems
71
Troubleshooting Pulse Modulation
72
Troubleshooting Problems <3.2 Ghz
72
Troubleshooting AT1 Attenuator
74
Troubleshooting Harmonic Spurious
75
20 Ghz Models
75
40 Ghz Models Only
76
Troubleshooting Non-Harmonic Spurious
78
Troubleshooting Option UNJ Phase Noise
79
Overall Block Diagram
81
Overall Block Description
82
A19 Power Supply
82
A18 Cpu
82
Input/Output Interface
82
Frequency Generation
83
Reference/Synthesis Loop Block Diagram
87
Reference/Synthesis Loop Block Description
88
A7 Reference
88
A5 Sampler
88
A6 Frac-N
89
A9 YIG Driver
89
A28 YIG Oscillator (YO)
89
A29 20 Ghz Doubler
89
RF Path Block Diagram
91
RF Path Block Description (Frequency Generation, Level Control, and Modulation)
92
Frequency Generation
92
A29 20 Ghz Doubler
92
A6 Frac-N
92
A8 Output
92
A30 Modulation Filter
93
A27 40 Ghz Doubler
93
A23 Low Band Coupler/Detector, A24 High Band Coupler, and A25 High Band Detector
93
ALC Loop
93
A10 Alc
93
Modulation (AM, FM, PM, and Pulse)
94
Self-Test Overview
95
Contacting Agilent Technologies
97
Review the Warranty
97
Contacting Agilent Sales and Service Offices
98
Important Information Needed by an Agilent Service Representative
98
Returning Your Signal Generator for Service
99
Assembly Replacement
100
Before You Replace an Assembly
101
After Replacing or Repairing an Assembly
101
Assemblies that You Can Replace
102
Outer Instrument Cover
103
Tools Required
103
Removal Procedure
103
Replacement Procedure
103
Inner Instrument Cover
105
Tools Required
105
Removal Procedure
105
Replacement Procedure
105
Front Panel
107
Tools Required
107
Removal Procedure
107
Replacement Procedure
108
A1 Keyboard
109
Tools Required
109
Removal Procedure
109
Replacement Procedure
109
A2 Display
111
Tools Required
111
Removal Procedure
111
Replacement Procedure
111
A2DS1 Display Backlight
113
Tools Required
113
Removal Procedure
113
Replacement Procedure
113
A3 Power Switch
115
Tools Required
115
Removal Procedure
115
Replacement Procedure
115
A4 Inverter
117
Tools Required
117
Removal Procedure
117
Replacement Procedure
117
A5 Sampler
119
Tools Required
119
Removal Procedure
119
Replacement Procedure
119
A6 Frac-N
121
Tools Required
121
Removal Procedure
121
Replacement Procedure
121
A7 Reference (Standard and Option UNJ)
123
Tools Required
123
Removal Procedure
123
Replacement Procedure
123
A8 Output
125
Tools Required
125
Removal Procedure
125
Replacement Procedure
125
A9 YIG Driver
127
Tools Required
127
Removal Procedure
127
Replacement Procedure
127
A10 Alc
129
Tools Required
129
Removal Procedure
129
Replacement Procedure
129
A11 Pulse/Analog Modulation Generator
131
Tools Required
131
Removal Procedure
131
Replacement Procedure
131
A18 Cpu
133
Tools Required
133
Removal Procedure
133
Replacement Procedure
133
A18Bt1
135
Tools Required
135
Removal Procedure
135
Replacement Procedure
135
A19 Power Supply
137
Tools Required
137
Removal Procedure
137
Replacement Procedure
137
Rear Panel
139
Tools Required
139
Removal Procedure
139
Replacement Procedure
139
A20 SMI (Source Module Interface)
141
Tools Required
141
Removal Procedure
141
Replacement Procedure
141
A21 Rear-Panel Interface
143
Tools Required
143
Removal Procedure
143
Replacement Procedure
143
A22 Line Module
145
Tools Required
145
Removal Procedure
145
Replacement Procedure
145
AT1 115 Db Attenuator (Option 1E1)
147
Tools Required
147
Removal Procedure
147
Replacement Procedure
147
A23 Low Band Coupler/Detector
149
Tools Required
149
Removal Procedure
149
Replacement Procedure
149
A24 20 Ghz High Band Coupler (E8241A and E8251A Models Only)
151
Tools Required
151
Removal Procedure
151
Replacement Procedure
151
A24 40 Ghz High Band Coupler (E8244A and E8254A Models Only)
153
Tools Required
153
Removal Procedure
153
Replacement Procedure
153
A25 20 Ghz High Band Detector with A25B Detector Bias Board (E8241A and E8251A Models Only)
155
Tools Required
155
Removal Procedure
155
Replacement Procedure
155
A25 40 Ghz High Band Detector with A25B Detector Bias Board (E8244A and E8254A Models Only)
157
Tools Required
157
Removal Procedure
157
Replacement Procedure
157
A26 MID (Microcircuit Interface Deck)
159
Tools Required
159
Removal Procedure
159
Replacement Procedure
159
A27 40 Ghz Doubler (E8244A and E8254A Models Only)
161
Tools Required
161
Removal Procedure
161
Replacement Procedure
161
A28 YIG Oscillator
163
Tools Required
163
Removal Procedure
163
Replacement Procedure
163
A29 20 Ghz Doubler
165
Tools Required
165
Removal Procedure
165
Replacement Procedure
165
A30 Modulation Filter (Standard and Option 1EA)
167
Tools Required
167
Removal Procedure
167
Replacement Procedure
167
A31 Motherboard
169
Tools Required
169
Removal Procedure
169
Replacement Procedure
169
A32 10 Mhz Crystal Oscillator (Option UNJ)
171
Tools Required
171
Removal Procedure
171
Replacement Procedure
171
B1 Fan
173
Tools Required
173
Removal Procedure
173
Replacement Procedure
173
Replaceable Parts Ordering Information
177
Call (800) 227-8164 to Order Parts Fast (U.S. Only)
177
Save Money with Rebuilt-Exchange Assemblies
178
Shipping the Defective Assembly Back to Agilent Technologies
179
Abbreviations Used in Part Descriptions
180
Major Assemblies
181
Major Assemblies Top View
182
Major Assemblies Bottom View
183
Major Assemblies Microcircuit Deck View
184
Inside Front Panel View
185
A1 Keyboard
185
A2 Display
185
A2DS1 Backlight
185
A3 Power Switch
185
A4 Inverter
185
Main Chassis Top View
187
A5 Sampler
187
A6 Frac-N
187
A7 Reference (Standard)
187
A7 Reference (Option UNJ)
187
A8 Output
187
A9 YIG Driver
187
A10 Alc
187
A11 Pulse/Analog Modulation Generator (E8251A and E8254A Models Only)
187
A18 Cpu
187
Main Chassis Bottom View
189
Inside Rear Panel View
191
A20 SMI (Source Module Interface)
191
A21 Rear Panel Interface
191
A22 Line Module
191
Microcircuit Interface Deck Top View
192
AT1 115 Db Attenuator (Option 1E1)
192
A23 Low Band Coupler/Detector
192
A25B High Band Detector Bias Board
192
A26 MID (Microcircuit Interface Deck)
192
MID Bottom View
193
A28 YIG Oscillator
193
A29 20 Ghz Doubler
193
Battery-Lithium
195
Cables
196
Inside Front Panel View
197
Main Chassis Top View
199
Rear Panel View
201
MID Top View (E8244A and E8254A Models Only)
203
MID Top View (E8241A and E8251A Models Only)
205
MID Bottom View
207
Main Chassis Bottom View
209
Hardware and Other Instrument Parts
211
Front Panel View
212
Disassembled Front Panel View
213
Disassembled Rear Panel View
215
Disassembled A32 10 Mhz Crystal Oscillator (Option UNJ)
217
Disassembled AT1 115 Db Attenuator View (Option 1E1)
218
Disassembled A29 20 Ghz Coupler/Detector (E8241A and E8251A Models Only)
219
Disassembled A24 High Band Coupler and A25 High Band Detector (E8244A and E8254A Models Only)
220
Microcircuit Interface Deck Top View
221
Main Chassis and MID Bottom View
223
MM RF Output Connector (E8244A and E8254A Models Only)
225
APC 3.5 RF Output Connector (E8241A and E8251A Models Only)
226
Type-N RF Output Connector (E8241A and E8251A with Option 1ED Models Only)
227
Main Chassis with Inside Cover and Right-Side Support Wall
228
Outer and Inner Instrument Covers and Associated Parts
229
Miscellaneous
230
Accessories
231
Documentation
231
Electrostatic Discharge (ESD) Protective Supplies
231
Post-Repair Procedures
234
Post-Repair Procedures Matrix
235
Safety and Regulatory
240
General Safety Considerations
242
Lithium Battery Disposal
243
Warranty
244
Assistance
245
Notice
246
Certification
247
Other manuals for Agilent Technologies E8241A
User Guide
281 pages
Installation Notes
12 pages
4
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Agilent Technologies E8241A Specifications
General
Brand
Agilent Technologies
Model
E8241A
Category
Portable Generator
Language
English
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