Agilent Technologies E8257C PSG Especificaciones Pagina 33
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- Tabla de contenidos
- SOLUCIÓN DE PROBLEMAS
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
1-23
Troubleshooting
Troubleshooting Assembly–Level Problems
Table 1-11 E8267C, Option 520, Power Supply vs. Assembly Matrix (4 of 5)
Motherboard Test Points:
LED
–5.2V
LED
–5.2 V2
a
a. Voltage regulator on motherboard
+ 12 VDC
LED
+ 15 VSTBY Fan Voltage
Power Supply P235-E4,5
Sampler P22-4,19
Frac N P32-4,19
Reference P42-4,19
Lowband Output P52-4,19
YTO Driver P112-1,2,26,27
b
b. Originates on YTO Driver
ALC/Scan P122-1,26
Mod Gen P132-1,26
CPU P223-1 P223-21
I/Q Multiplexer P152-1 P152-26
Baseband Generator P162-1 P162-26
Microwave Interface P201-31,32
20 GHz Doubler J32-8 J32-1,3
c
c. Originates on Microwave Interface
20 GHz Mod Filter J31-8 J31-1,3
c
20 GHz I/Q Modulator J34-9
c
40 GHz Doubler J36-8, J33-8
Attenuator
Lowband Coupler/Det
Front Panel/Display P11-43
Keyboard
Display Backlight
1E5 OCXO
Rear Panel P241-9,10 P241-5,6,7,8
Fan Fan+ P252-2, P251-2
Fan- P252-1, P251-1
Table 1-12 E8267C, Option 520, Power Supply vs. Assembly Matrix (5 of 5)
Motherboard Test Points:
LED
+1.95VD1
a
a. Voltage regulator on motherboard
LED
+1.8VD_1
a
Baseband Generator P161-52,118 P161-55,56,120-122
- Service Guide 1
- Contents 10
- 1 Troubleshooting 11
- ESD) Information 12
- Running Self-Test 13
- A18 CPU Turn–On Test 14
- Checking the A18 CPU Voltages 15
- Error Messages 16
- P12−1 −5.2 Vdc 22
- P12−3 LIGHT_EN >3 Vdc 22
- Brightness = 1, VDSP = 3 Vdc 22
- P11−6 LCD_ENABLE_H >3 Vdc 23
- Local hardkey 25
- Power Supply Troubleshooting 27
- I/Q hardkey 46
- check in Step 2 47
- Table 1-13 53
- Pin 1 –5.2 Vdc –5.2 ±.1 Vdc 59
- Pin 17 –6 Vdc –6 ±.1 Vdc 59
- Pin 18 +9 Vdc +9 ±.1 Vdc 59
- A29 20 GHz Doubler J32 62
- A27 40 GHz Doubler J33 62
- A35 I/Q Modulator J34 62
- A30 Modulation Filter J31 62
- Troubleshooting Unlocks 74
- 515 10 MHz Signal Bad 75
- 520 Sampler Unlocked 75
- 521 YO Loop Unlocked 75
- Troubleshooting Unlevels 77
- Table 1-15 78
- Table 1-16 78
- A6 Frac-N 81
- A6 Frac-N 81
- Troubleshooting the RF Path 86
- ALC and RF problems 86
- Table 1-19 87
- Table 1-20 88
- Table 1-21 89
- 20 GHz Models 90
- 40 GHz Models Only 91
- Table 1-24 93
- Most Likely Assembly 94
- Overall Description 95
- Input/Output Interface 96
- Frequency Generation 97
- Amplitude A10 ALC 99
- Frequency and Phase A6 Frac–N 99
- Synthesis Loop 101
- A7 Reference 104
- A5 Sampler (CW mode only) 105
- A6 Frac–N 105
- A9 YIG Driver 106
- A28 YIG Oscillator (YO) 107
- A29 20 GHz Doubler 107
- Troubleshooting 108
- Loop Filter & 109
- RF Path Description 110
- A8 Output 111
- A30 Modulation Filter 112
- A25 High Band Detector 112
- ALC Loop 113
- Digital Modulation 115
- Self-Test Overview 120
- Asia Call Center Numbers 123
- 2 Assembly Replacement 126
- Outer Instrument Cover 130
- Assembly Replacement 131
- Inner Instrument Cover 132
- Front Panel 134
- Replacement Procedure 135
- A1 Keyboard 137
- A2 Display 139
- Figure 2-5 A2 Display Removal 140
- A2DS1 Display Backlight 141
- A3 Power Switch 143
- A4 Inverter 145
- UNR), and A8 Output 147
- Figure 2-10 A9 YIG Driver 150
- Tools Required 151
- Removal Procedure 151
- Figure 2-11 A10 ALC 152
- Figure 2-14 A13 I/Q MUX 158
- Figure 2-17 A18 CPU 164
- Figure 2-18 A18BT1 166
- A19 Power Supply 167
- Rear Panel (Standard) 169
- Rear Panel (Option 1EM) 172
- Figure 2-22 A20 SMI 176
- A21 Rear-Panel Interface 177
- A22 Line Module 179
- AT1 115 dB Attenuator 181
- A23 Lowband Coupler/Detector 185
- A25 20 GHz Highband Detector 191
- Figure 2-36 A26 MID 198
- A28 YIG Oscillator 201
- A31 Motherboard (E8247C/57C) 208
- A31 Motherboard (E8267C) 211
- A33 6 dB PAD 217
- Figure 2-44 A33 6 dB PAD 218
- Figure 2-47 B1 Fan 224
- 3 Replaceable Parts 226
- Ordering Information 227
- Replaceable Parts 228
- Assemblies from a Top View 235
- Assemblies from a Bottom View 241
- A18BT1 Lithium Battery 243
- Table 3-1 244
- Hardware 249
- Front Panel View 250
- Figure 3-12 Front Panel View 251
- Disassembled Front Panel View 252
- Disassembled Rear Panel View 254
- Detector Bias Board 260
- Bias Board 261
- Miscellaneous 273
- 4 Post-Repair Procedures 276
- Post-Repair Procedures Matrix 277
- FM In-band Offset Calibration 278
- Post-Repair Procedures 283
- 5 Safety and Regulatory 284
- General Safety Considerations 285
- Lithium Battery Disposal 286
- Assistance 286
- Certification 286
- Safety and Regulatory 287
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