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Tektronix AFG2021 Arbitrary Function Generator ServiceManual
Manuals Includes info on:
General safety summary ........................................................................................... v
Service safety summary............................................................................................ 1
Preface ............................................................................................................... 3
Manual contents................................................................................................ 3
Manual conventions ........................................................................................... 3
Finding other information..................................................................................... 4
Introduction ......................................................................................................... 5
Strategy for servicing.......................................................................................... 5
Tektronix service offerings ................................................................................... 6
Performance verifification procedures ........................................................................ 6
Operating basics .................................................................................................... 7
General features................................................................................................ 7
Installation...................................................................................................... 8
Power the instrument on and off ............................................................................. 9
Perform instrument self test and self calibration .......................................................... 10
Protect your instrument from misuse ....................................................................... 11
Floating ground ............................................................................................... 13
Protect your DUT ............................................................................................. 14
Front panel overview ......................................................................................... 15
Parts of the screen interface ................................................................................. 16
Rear panel ..................................................................................................... 17
Theory of operation ............................................................................................... 19
Overview ...................................................................................................... 19
Main board .................................................................................................... 20
Front Panel board ............................................................................................. 21
Power Supply module ........................................................................................ 21
BNC Insulator boards ........................................................................................ 21
Adjustment procedures............................................................................................ 23
Purpose of adjustments....................................................................................... 23
Equipment required........................................................................................... 24
Performance conditions ...................................................................................... 25
Enable the Service mode..................................................................................... 25
Save/Recall menu............................................................................................. 25
Clear CAL Data menu........................................................................................ 25
Reference clock ............................................................................................... 26
Flatness adjustment........................................................................................... 27
Resetting the serial number .................................................................................. 30
Resetting the MAC address.................................................................................. 30
Maintenance........................................................................................................ 31
Service preparation ........................................................................................... 31
Preventing ESD ............................................................................................... 31
Preventive maintenance ...................................................................................... 32
Inspection and cleaning ...................................................................................... 33
Removal and installation procedures ............................................................................ 37
After repair adjustments...................................................................................... 38
Before disassembly ........................................................................................... 38
Equipment required for disassembly ....................................................................... 38
Handle removal/installation ................................................................................. 39
Case removal/installation .................................................................................... 40
Front panel knob removal/installation...................................................................... 41
Front panel cover removal/installation ..................................................................... 42
LCD display and Front Panel board removal/installation ................................................ 44
Front BNC Insulator board removal/installation .......................................................... 47
Front chassis and main chassis separation ................................................................. 48
Power Supply module removal/installation................................................................ 51
Fan removal/installation ..................................................................................... 53
AC line fifilter removal/installation .......................................................................... 56
Main board removal/installation ............................................................................ 57
Troubleshooting.................................................................................................... 61
Troubleshooting tools and equipment ...................................................................... 61
Troubleshooting tree.......................................................................................... 61
Diagnostics .................................................................................................... 63
Diagrams ........................................................................................................... 67
Replaceable parts .................................................................................................. 69
Parts ordering information ................................................................................... 69
Using the replaceable parts list .............................................................................. 70
Figure 1: Instrument dimensions ................................................................................. 8
Figure 2: Fuse and fuse adapter.................................................................................. 12
Figure 3: AFG2021 block diagram .............................................................................. 19
Figure 4: Frequency/Period tests ................................................................................ 26
Figure 5: Flatness adjustment connections ..................................................................... 27
Figure 6: Positioning the handle for removal .................................................................. 39
Figure 7: Location of the case retaining screws................................................................ 40
Figure 8: Removing the rear case................................................................................ 41
Figure 9: Location of the knob retaining clip .................................................................. 41
Figure 10: Location of the front panel cover retaining screws ............................................... 42
Figure 11: Removing the front panel cover and rubber keypad .............................................. 43
Figure 12: Disconnecting the front-panel ribbon cable from the Main board .............................. 44
Figure 13: Removing the Front Panel board ................................................................... 45
Figure 14: Disconnecting the LCD display cable.............................................................. 46
Figure 15: Disconnecting the ribbon cable from the Main board ............................................ 48
Figure 16: Location of the front chassis retaining screws .................................................... 49
Figure 17: Correct position of the EMI clip for the USB port................................................ 50
Figure 18: Correct orientation of BNC insulator............................................................... 50
Figure 19: Correct orientation of power button ................................................................ 50
Figure 20: Location of the Power Supply module cables and retaining screws ............................ 51
Figure 21: Positioning the power supply shield on the stand-off posts...................................... 52
Figure 22: Location of the fan cable ............................................................................ 53
Figure 23: Location to start removing the rear panel label ................................................... 54
Figure 24: Peeling off the rear panel label...................................................................... 54
Figure 25: Aligning the rear panel label (Option GL shown) ................................................ 55
Figure 26: AC line fifilter cable connections..................................................................... 56
Figure 27: Location of Main board retaining screws and stand-offs......................................... 58
Figure 28: Installing the rear BNC washers, nuts, and insulators ............................................ 59
Figure 29: Troubleshooting tree ................................................................................. 62
Figure 30: Interconnections for the AFG2021 ................................................................. 67
Figure 31: Front panel assembly exploded diagram........................................................... 72
Figure 32: Chassis assembly exploded diagram ............................................................... 75
Table 1: Test equipment .......................................................................................... 24
Table 2: External inspection check list.......................................................................... 33
Table 3: Internal inspection check list........................................................................... 35
Table 4: Troubleshooting equipment ............................................................................ 61
Table 5: Error codes............................................................................................... 65
Table 6: Parts list column descriptions.......................................................................... 70
Table 7: Front panel assembly replaceable parts (See Figure 31.) ........................................... 71
Table 8: Chassis assembly replaceable parts (See Figure 32.)................................................ 73
Index
File Format: PDF
Compatible: All Versions of Windows & Mac
Language: English
Requirements: Adobe PDF Reader
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