Agilent Technologies ENA Series Manuale delle Istruzioni Pagina 176
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176 Chapter 6
Replacement Procedure
A20 Digital Motherboard Replacement
A20 Digital Motherboard Replacement
Tools Required
• TORX screwdriver, T10, T15, and T20
Removal Procedure
Refer to Figure 6-8 for this procedure.
Step 1. Remove the mouse, the external keyboard and the parallel printer cable if they are
connected to the rear panel.
Step 2. Remove the outer cover as described in “Outer Cover Removal” on page 166.
Step 3. Remove the following assemblies.
• A25 Handler I/O board (refer to “A25 Handler I/O Board Replacement” on page 175.)
• A21 PCI DSP CARD/A24 GPIB Card assembly (refer to “A21 PCI DSP Card / A24
GPIB Card Replacement” on page 185.)
Step 4. Disconnect the following cables.
• Connected to the Front Panel (touch screen, opt. 016) (item 1)
• Connected to the A32 USB connector (item 2)
• Connected to the A10 Analog Mother Board (item 3).
• Connected to the A28 FDD (item 4).
• Connected to the A27 HDD (item 6)
• Connected to the Front Panel (display) (item 5)
NOTE The mylar cable (item 5) and its connector are very fragile. It’s recommended to replace
the mylar cable when the cable is disconnected and connected frequently.
Step 5. Remove six TORX T10 screws (item 7) fastening the digital motherboard.
Step 6. Lift the digital motherboard.
Replacement Procedure
Step 1. Reverse the order of the removal procedure.
- Service Guide 1
- Manual Printing History 2
- Safety Summary 3
- Safety Symbol 4
- Certification 5
- Documentation Warranty 5
- Exclusive Remedies 5
- Assistance 5
- Typeface Conventions 6
- Contents 10
- 1 General Information 13
- Precautions 14
- Organization of Service Guide 15
- Required Equipment 18
- Power Meter Accuracy Test 20
- 2 Performance Tests 25
- Introduction 26
- OK button (2 in Figure 2-2) 27
- Misc Setup 28
- GPIB Setup 28
- GPIB0 hpib7 (1 in 28
- OK button (3 in Figure 2-3) 29
- Running the Performance Tests 30
- Individual Test Description 33
- 4. Trace Noise Test 34
- 6. Dynamic Accuracy Test 35
- Frequency Accuracy Test 37
- Trace Noise Test 40
- Crosstalk Test 42
- System Dynamic Range Test 42
- Dynamic Accuracy Test 43
- 3 Adjustment 81
- Safety Considerations 82
- Warm-up for Adjustment 82
- Writing ID 83
- Synthesizer Gain Adjustment 84
- Local Output Power Adjustment 84
- Receiver IF Range Adjustment 85
- 4 Troubleshooting 87
- Primary Trouble Isolation 90
- Chapter 4 91 91
- No Display troubleshooting 92
- Power On Self Test 100
- PLL unlock 100
- Table 4-2 Required equipment 101
- Program Overall 102
- Chapter 4 105 105
- Troubleshooting 105
- 4. Troubleshooting 105
- To Check the Device Driver 107
- To Check the Front Panel 109
- To Check the LCD 110
- To Check the Mouse 111
- To Check the FDD 111
- To Check the Video output 112
- To Check the LAN 112
- To Check the GPIB 116
- Chapter 4 119 119
- Configure the Motherboard 120
- 5 Replaceable Parts 127
- Ordering Information 128
- Exchange Assemblies 128
- Replaceable Parts List 129
- Top View (Major Assemblies) 130
- Top View (Cables) 132
- Table 5-2 Top View (Cables) 133
- 134 Chapter 5 134
- Replaceable Parts 134
- E5062A : MY44102843 and above 136
- 138 Chapter 5 138
- Front View (Analog Boards) 140
- Front View (Semirigid Cables) 141
- Front Panel 142
- Table 5-8 Front Panel 143
- Rear View 144
- Cover Assembly 145
- A28 FDD Assembly 146
- A27 HDD Assembly 147
- Analog Mother Board Assembly 149
- Power Supply Assembly 150
- Chassis Assembly 151
- Front Assembly (Inverter) 153
- : MY44102843 and above 155
- MY44102842 and below 156
- Front Assembly (Cover 1) 158
- Front Assembly (Cover 2) 159
- Front Assembly (Cover 3) 160
- Label on Rear Face 161
- Other Parts 162
- 6 Replacement Procedure 163
- Replacing an Assembly 164
- Required Tools 165
- Outer Cover Removal 166
- Front Panel Removal 167
- 168 Chapter 6 168
- Replacement Procedure 168
- Tools Required 169
- Removal Procedure 169
- Removal procedure 172
- 174 Chapter 6 174
- Chapter 6 177 177
- 6. Replacement Procedure 177
- A1 Source Board Replacement 178
- Chapter 6 179 179
- A2 Receiver Board Replacement 180
- Chapter 6 181 181
- Fan Replacement 182
- 186 Chapter 6 186
- 188 Chapter 6 188
- 190 Chapter 6 190
- A51 LCD Display Replacement 191
- 192 Chapter 6 192
- Figure 6-16 A51 LCD Removal 192
- LCD Backlight Replacement 193
- 194 Chapter 6 194
- 7 Post-Repair Procedures 195
- Post-Repair Procedures 196
- 198 Chapter 7 198
- A Manual Changes 199
- Manual Changes 200
- Change 1 201
- 202 Appendix A 202
- B System Recovery 203
- System Recovery 204
- Next > button (Figure 214
- I accept this agreement 215
- Windows always 216
- Finish button to finish the 216
- Service Menu 217
- Test Menu 217
- Adjust Touch Screen 217
- 218 Appendix B 218
- CFirmware Update 219
- Firmware Update 220
- OK button 221
- D Computer Virus Check 223
- Computer Virus Check 224
- OK button (6 in 226
- OK button (3 in Figure 226
- Close button (3 in Figure 226
- Explore 227
- Properties in the File menu 227
- Sharing 227
- OK button (2 in Figure D-9) 228
- E Power Requirement 233
- Preparation for Power Supply 234
- Appendix E 235 235
- Power Requirement 235
- E. Power Requirement 235
- Turning the Power ON and OFF 236
- F Messages 237
- Error Messages 239
- Warning Message 249
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