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84 Chapter 3
Troubleshooting
Manual Troubleshooting Procedures (Step 4)
3. Set the RF signal generator’s frequency to 100, then 500, 900, and
1800 MHz. For each frequency reset the Tune Freq to that
frequency. The Test Set’s measurements should read as follows:
a. TX Power should read approximately 0.001 W for each frequency.
b. Frequency should read 100, 500, 900, and 1800 MHz respectively.
c. Press the
Spec Anl key to access the analog spectrum analyzer.
Observe the level and frequency of the signal.
Isolating the RF Source
The RF Generator function uses the following assemblies. Refer to
Figure 3-19 and the block diagrams in Chapter 10 , “Block Diagrams,”
on page 283.
• A2A120 LO IF/IQ Modulator
• A2A25 Signal Generator Synthesizer
• A2A24 Output Section
• A2A110 Upconverter
Figure 3-19 Isolating the RF Source
OPP
100 W
Attenuator
Splitter
Output
ANT
IN
RF
IN/OUT
DUPLEX
OUT
Input
Attenuator
Power
Detector
Up
Output
Section
IQ
Modulator
Sig Gen
Synthesizer
RF Generator
Reference
RF I/O
RPP
Attenuator
Converter
TO RF ANALYZER
DC Block
- Test Set 1
- Contents 10
- General Information 11
- 12 Chapter 1 12
- Safety Considerations 13
- 14 Chapter 1 14
- Chapter 1 15 15
- 16 Chapter 1 16
- Product Markings 17
- Certification 18
- Manufacturer’s Address: 19
- Commercial Products 20
- Chapter 1 21 21
- Assistance 22
- Power Cables 23
- Earth Ground 25
- JIS C 8303, 100 V 26
- °/Straight 27
- ATTENTION 29
- Documentation 30
- Chapter 1 31 31
- Which Document is Required? 32
- Trademark Acknowledgements 33
- 34 Chapter 1 34
- Product Information 35
- Instrument Description 36
- Chapter 2 37 37
- Instrument Assemblies 38
- Upgrades 41
- Load the DSP Firmware 42
- CDMA 2000 Enable Process 42
- Checking Firmware Version 43
- SERVICE Screen 44
- Repair Process 45
- 46 Chapter 2 46
- Service Information 47
- Troubleshooting 48
- 48 Chapter 3 49
- Chapter 3 49 50
- 50 Chapter 3 51
- To Start Troubleshooting 52
- Spare Fuse 53
- Line Fuse 53
- Chapter 3 53 54
- 500mV/div 55
- 500µs/div 55
- Controller 56
- Reading LED Codes 57
- Chapter 3 57 58
- = rapid blink 60
- = steady on or slow blink 60
- Then the failure is 61
- LED Legend 61
- Chapter 3 61 62
- Chapter 3 63 64
- Chapter 3 65 66
- Functional Diagnostics Menu 67
- Chapter 3 67 68
- AF Diagnostics 69
- SERVICE MENU Screen 70
- RF Diagnostics 71
- CDMA Diagnostics 73
- Warning/Error Messages 74
- Time-outs 75
- OOLs.eps 79
- Chapter 3 79 80
- 80 Chapter 3 81
- Chapter 3 81 82
- Further Isolating RF Failures 83
- 86 Chapter 3 87
- Service Screen 87
- Preset key 87
- Field Names and Descriptions 88
- 88 Chapter 3 89
- Chapter 3 89 90
- 90 Chapter 3 91
- Product Verification 91
- Chapter 3 91 92
- 92 Chapter 3 93
- Hardware Maintenance 95
- Cleaning 96
- Functionality 96
- Integrity 97
- Reset and GFI-Test Buttons 99
- PC Card Battery 100
- 100 Chapter 4 101
- Preventative Maintenance 101
- Maintenance Procedures 101
- Disassembly 102
- Service Tools 103
- Assembly Replacements 104
- External Covers 105
- Internal Covers 106
- 106 Chapter 5 107
- Chapter 5 107 108
- Cover-Bottom 109
- Screws (x27) 109
- Chapter 5 109 110
- A1 Disassembly 111
- Chapter 5 111 112
- A2 Disassembly 113
- Chapter 5 113 114
- 114 Chapter 5 115
- Chapter 5 115 116
- PCMCIA Assembly 117
- Control Interface Assembly 118
- Assemblies 119
- Chapter 5 119 120
- Ref) Assemblies 121
- Chapter 5 121 122
- Attenuator Assembly 123
- Chapter 5 123 124
- Motherboard Assembly 125
- Chapter 5 125 126
- A3 Disassembly 127
- Chapter 5 127 128
- Power Supply Assembly 129
- Rear Sub-Panel 129
- Chapter 5 129 130
- Wire/Cable Information 131
- 134 Chapter 5 135
- Replaceable Parts 136
- Direct Parts Ordering 137
- Parts Identification 138
- Covers and Chassis Parts 139
- A1 Assemblies 140
- A2 Assemblies 141
- AUDIO #1, A2A80 Assembly 142
- Figure 6-6 143
- Figure 6-7 143
- Figure 6-8 144
- Figure 6-9 145
- Figure 6-10 146
- Motherboard and Sub Frame 147
- Figure 6-11 147
- A3 Rear Panel Assembly 148
- Cable Assemblies 149
- Chapter 6 149 150
- Parts List 151
- Chapter 6 151 152
- Table 6-1 152
- 152 Chapter 6 153
- Chapter 6 153 154
- 154 Chapter 6 155
- Chapter 6 155 156
- 156 Chapter 6 157
- Periodic Adjustments 158
- Equipment 161
- 162 Chapter 7 163
- Calibration Programs 164
- 164 Chapter 7 165
- Chapter 7 165 166
- Voltmeter References 167
- +REF -REF 168
- Measurement Board Assembly 168
- Audio Analyzer 1 Offset 169
- Setting the Timebase Latches 170
- 170 Chapter 7 171
- Chapter 7 171 172
- 172 Chapter 7 173
- Performance Tests 174
- Procedure and Equipment 175
- RF Generator FM Distortion 179
- Performance Test 1 179
- Procedure 180
- 180 Chapter 8 181
- RF Generator FM Accuracy 182
- Performance Test 2 182
- Chapter 8 183 184
- RF Generator FM Flatness 185
- Performance Test 3 185
- Chapter 8 185 186
- 186 Chapter 8 187
- RF Generator Residual FM 188
- Performance Test 4 188
- Chapter 8 189 190
- DUPLEX OUT 191
- INPUT 50Ω 191
- RF IN/OUT 191
- −10 dBm 192
- Procedure 2 193
- Chapter 8 193 194
- −70.1 dB 195
- −52.6 dB 195
- −73.2 dB the 195
- AUDIO OUT 198
- AUDIO IN HI 202
- AF Analyzer Residual Noise 203
- Performance Test 13 203
- Chapter 8 207 208
- Chapter 8 209 210
- RF Analyzer FM Accuracy 212
- Performance Test 20 212
- 212 Chapter 8 213
- RF Analyzer FM Distortion 214
- Performance Test 21 214
- 214 Chapter 8 215
- RF Analyzer FM Bandwidth 216
- Performance Test 22 216
- 216 Chapter 8 217
- LOW RESIDUAL OUTPUT 218
- 218 Chapter 8 219
- 10 MHz OUTPUT 220
- 222 Chapter 8 223
- 226 Chapter 8 227
- Tune Freq to 881.32 MHz 227
- 228 Chapter 8 229
- Preset on the Test Set 229
- 232 Chapter 8 233
- Performance Test Records 234
- Performance Test 1 Record 235
- Performance Test 2 Record 237
- Performance Test 3 Record 239
- −10 2000 50 0.2 −1 1 240
- −10 2000 50 2 −11 240
- −10 2000 50 10 −1 1 240
- −10 2000 50 25 −1 1 240
- Performance Test 4 Record 241
- RF Generator Level Accuracy 243
- Performance Test 5 Record 243
- Performance Test 6 Record 251
- −12 2000 3rd −25.000 254
- Performance Test 7 Record 255
- Performance Test 8 Record 257
- Performance Test 9 Record 259
- Performance Test 10 Record 260
- Performance Test 11 Record 262
- AF Analyzer AC Level Accuracy 263
- Performance Test 12 Record 263
- Performance Test 13 Record 264
- Performance Test 14 Record 265
- AF Analyzer DC Level Accuracy 266
- Performance Test 15 Record 266
- Performance Test 16 Record 267
- Performance Test 17 Record 268
- Performance Test 18 Record 269
- RF Analyzer Level Accuracy 270
- Performance Test 19 Record 270
- Performance Test 20 Record 272
- Performance Test 21 Record 273
- Performance Test 22 Record 274
- RF Analyzer Residual FM 275
- Performance Test 23 Record 275
- Performance Test 24 Record 276
- Performance Test 25 Record 278
- Performance Test 26 Record 279
- Performance Test 27 Record 280
- Performance Test 28 Record 281
- Performance Test 29 Record 282
- 282 Chapter 9 283
- Block Diagrams 284
- Introduction 285
- Reference 286
- RF Input/Output Section 287
- Chapter 10 287 288
- RF Analyzer Section 289
- Spectrum Analysis 290
- 290 Chapter 10 291
- MOTHERBOARDP/O 292
- MOTHERBOARD A2A1P/O 293
- MOTHERBOARDP/O A2A1 294
- Audio Analyzer Section 295
- Chapter 10 295 296
- 296 Chapter 10 297
- MEASUREMENT ASSY 298
- 298 Chapter 10 299
- CDMA Analyzer Section 300
- LO IF Conversion 301
- RECEIVE DSP ASSEMBLY, A2A36 302
- CDMA Generator Section 303
- Chapter 10 303 304
- 304 Chapter 10 305
- Audio Generator Section 306
- 306 Chapter 10 307
- Chapter 10 307 308
- RF Generator Section 309
- Level Control 310
- Modulation 310
- I/Q MODULATOR, A2A120 312
- UPCONVERTER ASSEMBLY, A2A110 314
- Reference/Regulator Section 315
- REFERENCE ASSEMBLY, A2A23 316
- 316 Chapter 10 317
- Instrument Control Section 318
- MEMORY/SBRC ASSEMBLY, A2A30 319
- Chapter 10 319 320
- 320 Chapter 10 321
- Error Messages 322
- 322 Appendix A 323
- Appendix A 323 324
- 324 Appendix A 325
- Diagnostics Messages 326
- 326 Appendix A 327
- Memory Card Checksum Error 328
- Memory Card Read Error 328
- Memory Erase Error 328
- Memory Write Error 328
- Programming Voltage Error 329
- ROM Checksum Error 329
- Appendix A 329 330
- Text Only Error Messages 331
- Appendix A 331 332
- IBASIC Error Messages 333
- GPIB Error Messages 334
- 334 Appendix A 335
- Appendix A 335 336
- 336 Appendix A 337
- Index 337 338
- 338 Index 339
- Index 339 340
- 340 Index 341
- Index 341 342
- 342 Index 343
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