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Chapter 3 Replacing Assemblies
Introduction
3-2 Assembly-Level Service Guide
3
Introduction
This chapter contains the instructions for removing major assemblies in
the HP 53131A/132A/181A. To install an assembly, reverse the removal
instructions.
This chapter provides the following disassembly and reassembly
procedures:
WARNING HAZARDOUS VOLTAGES ARE ON THE POWER SUPPLY
ASSEMBLY. UNPLUG THE INSTRUMENT, THEN WAIT AT
LEAST SIX MINUTES FOR THE CAPACITORS ON THE POWER
SUPPLY ASSEMBLY TO DISCHARGE BEFORE WORKING ON
THIS INSTRUMENT.
CAUTION Do not replace assemblies with the instrument turned on. Damage to
components can occur.
Refer to Chapter 5, “Replaceable Parts,” for the part number of the
assemblies.
• To Remove the Cover page 3-4
• To Remove the Front Bezel page 3-6
• To Remove A1 Motherboard Assembly page 3-9
• To Remove the A2 Display Board, Keypads, and Window page 3-11
• To Remove A3 1.5/3.0/5.0/12.4 GHz Channel Assembly
(Option 015/030/050/124)
page 3-13
• To Remove A4 AC Power Supply Assembly page 3-15
• To Remove A5 DC Power Input Assembly (Option 002) page 3-17
• To Remove A6 High Stability Timebase Assembly
(Options 001, 010, and 012)
page 3-19
• To Remove the Rear Terminals (Option 060) page 3-21
- HP 53131A/132A/181A 1
- 225 MHz Counter 1
- Assembly-Level Service 3
- THUS, NEVER TRY 4
- TO MEASURE AC POWER 4
- LINE SIGNALS WITHOUT AN 4
- ISOLATION TRANSFORMER 4
- 2 Service 9
- Contents 10
- 3 Replacing Assemblies 11
- 4 Retrofitting Options 12
- 5 Replaceable Parts 12
- 6 Backdating 13
- 8 HP 53181A Specifications 13
- How to Use This Guide 15
- How to Order Guides 17
- Hardware 20
- Accessories Supplied 21
- Accessories Available 21
- Performance Tests 23
- Complete Performance Tests 25
- Optional HP-IB Verification 25
- Recommended Calibration Cycle 25
- Test Record 25
- Equipment Required 26
- Verification 27
- HP 3458A 30
- Digital Multimeter 30
- Counter Setup 32
- HP 8663A 33
- Synthesized Signal Generator 33
- External Timebase Tests 34
- HP 3325B 35
- Synthesizer #1 35
- Synthesizer #2 35
- HP53131A/132 40
- Synthesizer 42
- FREQUENCY 2 46
- Frequency 1 47
- Frequency 2 48
- (HP 53131A/132A Only) 49
- Option 030 only 53
- (Option 050 only) 55
- (Option 124 only) 56
- Volt Peak 2 61
- (Optional) 62
- (Page 1 of 6) 63
- (Page 2 of 6) 64
- (Page 3 of 6) 65
- (Page 4 of 6) 66
- (Page 5 of 6) 67
- (Page 6 of 6) 68
- (HP 53181A Only) 73
- Frequency Sensitivity 80
- 030/050/124 87
- (Page 1 of 4) 93
- (Page 2 of 4) 94
- (Page 3 of 4) 95
- (Page 4 of 4) 96
- To Provide Repair Information 99
- Scale & 102
- On / Stby 102
- key, then press POWER 104
- To Unsecure for Calibration 105
- To Secure Against Calibration 109
- To View the Calibration Count 110
- Channels 1 and 2 111
- key, then press POWER key 111
- CALIBRATING 113
- OFFS 1 PASS 113
- CAL: OFFS 2 ? 113
- OFFS 2 PASS 113
- DC Power Supply 114
- HP 53131A/132A 114
- Counter Digital Multimeter 114
- To Calibrate Time Interval 115
- HP53131A/132A 116
- HP 8130A 116
- Pulse Generator 116
- CAL: TI FINE? Calibration 117
- Equipment 117
- CAL: TI FINE? 118
- TI CAL PASS 118
- House Standard 119
- 10 MHz Reference 119
- (Medium, High, or Ultra-High) 120
- Chapter 2 Service 123
- Channel 1 127
- CAL: GAIN 1 ? 129
- GAIN 1 PASS 129
- HP 53181A 130
- Safety Considerations 132
- Recommended Test Equipment 133
- Repair Considerations 134
- After Service Considerations 135
- Troubleshooting the Counter 141
- Motherboard 142
- Assembly 142
- TEST LOOP: ON 143
- Self Tests 145
- Replacing Assemblies 149
- Introduction 150
- Tools Required 151
- Do This First 151
- To Remove the Cover 152
- SERIAL PLATE 153
- To Remove the Front Bezel 154
- Rubber foot 164
- A4 AC Power 164
- Supply Assembly 164
- (Option 002) 165
- FOR LABORATORY USE BY 168
- QUALIFIED PERSONNEL 168
- FOUR USAGE EN LABORATOIRE 168
- PAR PERSONNEL QUALIFIE 168
- Talk Only 168
- Retrofitting Options 173
- Retrofitting Procedure 177
- Cable wires 182
- Procedure 184
- A6 High Stability 185
- Timebase Assembly 185
- Plug (MP9) 187
- Replaceable Parts 191
- Exchange Assemblies 192
- Reference Designations 193
- How To Order A Part 194
- Contacting Hewlett-Packard 195
- Cabinet Parts and Hardware 196
- Chapter 5 Replaceable Parts 197
- Assemblies) 199
- Backdating 201
- Manual Changes 202
- Older Instruments 202
- Backdating Hardware 203
- CHANGE 3 (New TCXO boards) 204
- Option 002 206
- Option 015 206
- Option 030 206
- Option 050 206
- Backdating Firmware 208
- (Continued) 209
- HP53131A 213
- (Medium or High) 215
- Backdating Specifications 216
- Chapter 6 Backdating 218
- HP 53131A/132A Specifications 219
- Instrument Inputs 220
- Instrument Inputs (Continued) 221
- Time Base 222
- Measurement Specifications 223
- Automatic or External Arming: 224
- Time or Digit Arming: 224
- Time Interval 227
- Frequency Ratio: 227
- Pulse Width 228
- Rise/Fall Time 228
- Duty Cycle 229
- Totalize 229
- Peak Volts 229
- Trigger Level Timing Errors 230
- Gate Time 232
- Measurement Throughput 232
- Measurement Arming 232
- Measurement Statistics 233
- Measurement Limits 233
- General Information 234
- HP 53181A Specifications 235
- Input Frequency (Hz) 240
- Frequency Error (Hz) 240
- Input Frequency 240
- Measurement Definitions 243
- NUMERICS 247
- 1-800-800-5281 251
- 254
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