Sharp CD-M4000 User's Guide Page 136
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Removing the Front and Top Covers
4-46 72A-1230 Rev. F
July 22, 2005
Accessing M4100 Components
DANGER Ensure that the AC power cable is disconnected prior to removing any of
the M4100 covers. To avoid static discharge, ground yourself and the test
set before handling any circuit boards.
The following procedures require access to internal M4100 components:
• Performing internal checks
• Replacing internal components for purposes of diagnosis and repair
• Upgrading components
This section provides guidance in accessing M4100 internal components and
identifying those components and their interconnections. Subsequent
replacement procedures are detailed in ”Replacing M4100 Components”
on page 4-56.
Access to all internal M4100 components requires removal of the instrument’s
front and top covers. Access to certain components, notably many of the
instrument’s PC boards, also requires removal of the card cage cover.
Instructions for both actions are provided below.
DANGER Always disconnect AC power before gaining access to internal M4100
components. If re-application of power is necessary to perform an
internal check, follow the procedural instructions carefully to minimize
the risk of electrical shock. In particular, make certain that only
voltmeter probes come in contact with internal test points. Furthermore,
the High Voltage Test Cable and Safety Switch extension must always be
disconnected from the Transformer case during internal measurement
and inspection.
Removing the Front and Top Covers
The front and top covers must be removed to gain access to internal
components. Keep screws that are removed together in a safe location for
re-assembly.
Take the following steps to remove the covers:
1. With the power cable disconnected, snap off the front cover. To do so,
stand facing the unit and grip the edges of the front cover panel with both
hands while pulling towards you. Then, turn the unit around so that the
black rubber feet are facing you.
2. Use a flat-blade screwdriver to remove the top two rubber feet.
3. Lift the top cover up and towards the rear. Then, turn the unit around again
so that the front panel is facing the operator.
- M4000 Insulation Analyzer 1
- User Guide 1
- Structure of this Manual 3
- ENTER. Or, press 4
- 3. Running M4000 Tests 6
- Appendix B. Warranty 9
- Appendix C. Error Messages 9
- Appendix D. Part Numbers 10
- 1. Introduction 11
- M4000 Components 12
- Front Panel 14
- M4200c Controller 15
- Third-Party Controller 17
- M4000 Software 17
- External Reference 18
- M4300 Transport 18
- Storage and Moving Mode 20
- Testing Mode 23
- When Finished Testing 25
- M4000 PC Cable 26
- Shipping Instructions 28
- Safety Considerations 29
- Clearances 30
- Grounding 31
- Personnel Safety 31
- M4000 Connections 32
- M4000 Operation 33
- M4000 Safety Features 33
- Safety Precautions 35
- Instrument 37
- Transformers 37
- Remember: SAFETY 38
- Safety Summary 38
- 2. M4000 Software 39
- Optimization 43
- Time/Date Format 44
- What’s New 44
- The M4000 Program 45
- Menu Bar 46
- Clipboard Test Mode 47
- Icon Description 48
- Menu Items 49
- Temperature Correction 50
- Configuration 51
- Clipboard Configuration 52
- DTA Field Configuration 54
- Instrument Configuration 56
- Advanced Configuration 57
- Using Help 59
- Printer Setup 60
- Printing 60
- Administrative Information 62
- Test Conditions 63
- Test Results Information 64
- Column Description 65
- Raising Test Voltage 67
- Test Results 68
- Clearing Test Results 70
- Saving Test Results 71
- Graphing Test Results 71
- Running A UST Test 72
- Running a GST-Guard Test 74
- DTA Mode 77
- DTA Tests 77
- DTA Data Manager 78
- Preparing for a DTA Test 79
- Starting a DTA Test 79
- 72A-1230 Rev. F 3-23 83
- Figure 3.15 End of DTA Test 83
- DTA Icons and Function Keys 84
- Using A Resonator 85
- OTE Recommended for M2H only 88
- Quick Checks 91
- Troubleshooting Resources 92
- Isolating Trouble 93
- Preventive 95
- Maintenance 95
- Section Purpose Page 96
- Reference 96
- Overview of M4100 97
- 4-8 72A-1230 Rev. F 98
- Avoiding Problems 100
- Troubleshooting from Symptoms 102
- Symptom Suggested Action 103
- Running Diagnostics 111
- System Status 113
- Guard Status 114
- Disabled 114
- Main Reference 114
- Status Disabled 114
- Field Reference 115
- Factory Status 115
- Calibration Verification 116
- Field Recalibration 121
- Subsystem Diagnostics 124
- 72A-1230 Rev. F 4-37 127
- July 22, 2005 127
- M4100 Component List 128
- Thermal Profile 129
- Communications Loopback Test 130
- Running Other Tests 132
- DC Insulation 133
- Resistance 133
- Voltage Verification 134
- Accessing M4100 Components 136
- 72A-1230 Rev. F 4-47 137
- Removing the Card Cage Cover 138
- M4100 Internal Checks 140
- Low-Voltage Power Checkout 141
- LVPS Fuses 142
- W8/W9/W11 Cable Checkout 143
- Orange Cable Checkout 144
- Transformer Checks 144
- W46 Cable Checkout 145
- Replacing M4100 Components 146
- Returning Replaced Components 147
- Ground Nuts 151
- Captive Screws 153
- Side Screws 154
- Top Fan Screws 154
- Guard Mode Switch Board 156
- W8 Connector 156
- W11 Connector 156
- W9 Connector 156
- Replacing the Timing Board 158
- Replacing the DSP/CPU Board 160
- Replacing the Safety Board 162
- Front Screws 164
- Perimeter Screws and Washers 164
- Replacing the Guard Board 166
- Secure Screws 173
- Replacing the Transformer 175
- Whiz Nut 177
- Replacing the HV Pothead 181
- Ground Screw 182
- Replacing the Fan Filter 183
- Replacing the Fan 184
- 72A-1230 Rev. F 4-95 185
- 4-96 72A-1230 Rev. F 186
- Accessory Bag 188
- No. Number Description Qty 189
- Documentation Bag 190
- Appendix B. Warranty 191
- Software Limited Warranty 192
- Limitations of Remedies 192
- B-4 72A-1230 Rev. F 194
- Appendix C. Error Messages 195
- Error # Description of Error 196
- M4000 Communications Errors 197
- C-6 72A-1230 Rev. F 200
- Appendix D. Part Numbers 201
- D-2 72A-1230 Rev. F 202
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Setting up
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Arrangement
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Power on/off
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Operating
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EASY MENU
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PICTURE Menu
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IMAGE Menu
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