Monitor Audio Vector Service Manual Page 121
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
- Service Manual 1
- WFM90D and WFM91D 1
- Handheld Waveform, Vector 1
- Picture, and Audio Monitor 1
- 071-1143-01 1
- WARRANTY 3
- Table of Contents 5
- Adjustment Procedures 6
- List of Figures 8
- List of Tables 10
- General Safety Summary 11
- Symbols and Terms 12
- Service Safety Summary 13
- About This Manual 15
- Related Manuals 15
- Contacting Tektronix 16
- Specifications 17
- Characteristics Tables 20
- Electrical Specifications 20
- Table 1- 2: DC restoration 22
- Table 1- 3: Audio mode 23
- Table 1- 5: Vector mode 24
- Table 1- 6: Synchronization 25
- Table 1- 7: Power source 25
- Physical Characteristics 26
- Environmental Characteristics 26
- Certification and Compliances 27
- Operating Information 29
- Installation 31
- Desk Stand 32
- Travel Case 33
- Electrical Installation 34
- Replacing the Alkaline 35
- Functional Overview 37
- Figure 2- 6: WFM90D keypad 38
- Menu Control 39
- Arrow Buttons 39
- Instrument Reset 40
- DC IN 11-18V 41
- Using the Menus 45
- Operating Menus 47
- Vector Menu 48
- Audio Menu 49
- Picture Menu 49
- WIP Menu 50
- (Waveform-in-Picture) 50
- Configuration Menu 51
- Line Select Menu 56
- Theory of Operation 57
- Top Board 60
- Performance Verification 63
- Summary V erification 66
- Equipment Required 67
- Sync Separation 69
- Overscan 72
- Vector Phase Stability 75
- Chrominance Bandwidth 76
- Check Sync Separation 79
- Check Frequency Response 80
- Adjustments 85
- Raster VCO 89
- Frequency Response 91
- Vector Quadrature Phase 93
- Vector Gain and X5 Gain Phase 93
- Audio Gain 94
- Vertical Gain 95
- Cable Margin 97
- Maintenance 101
- After Repair Adjustments 102
- Repackaging Instructions 102
- Remove and Replace 103
- Procedures 104
- Top Cover Assembly 105
- Remove Torx screws (6) 106
- LCD Display Assembly 107
- LCD - Newer Inst ruments 108
- LCD - Older Instruments 111
- Backlight 114
- Top Board Assembly 115
- Pull nub 116
- Top board 116
- Top Board Shield 117
- Bottom Board 119
- SDI Interface Board 121
- Backlight Board 122
- Input Board Assembly 124
- Battery Cover Assembly 125
- Turnlock Stud and 126
- Turnlock 127
- Battery cover 127
- Batteries 128
- Alkaline Batteries 129
- Bottom Cover Assembly 131
- Battery Contacts 132
- Turnlock Stud Receptacle 134
- Bottom Cover Electrical 134
- AC Adapt er EMI 137
- Suppressor 137
- Troubleshooting Procedures 139
- Battery-Fault Analysis 140
- Low -Voltage Power Supply 142
- Fault Symptom Table 143
- Troubleshooting Flowcharts 144
- Connector Diagram 159
- H NiMH battery pack 163
- H Viewing hood 163
- H Desk stand 163
- Accessories 164
- Replaceable Mechanical Parts 165
- Replaceable Parts List 167
- Abbreviations 168
- Mfr. Code to Manufacturer 168
- Cross Index 168
- Instrument Accessories 168
- Manufacturers Cross Index 169
- Diagrams 177
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