ix
Figure 6Ć20:ăBoard Bracket Removal 6Ć44...........................
Figure 6Ć21:ăA10 Acquisition Board Removal 6Ć47....................
Figure 6Ć22:ăFloppy Disk Removal 6Ć49.............................
Figure 6Ć23:ăRear Chassis Removal 6Ć51............................
Figure 6Ć24:ăA16 Low Voltage Power Supply Removal 6Ć53............
Figure 6Ć25:ăDisplay Assembly Removal - TDS 644A 6Ć55............
Figure 6Ć26:ăDisplay Assembly Removal - TDS 620A and 640A 6Ć56...
Figure 6Ć27:ăDisplay Driver Board Removal 6Ć57......................
Figure 6Ć28:ăFront Subpanel Removal 6Ć59..........................
Figure 6Ć29:ăAccessing the Protection Switch 6Ć64....................
Figure 6Ć30:ăPrimary Troubleshooting Procedure 6Ć65.................
Figure 6Ć31:ăModule Isolation Troubleshooting Procedure 6Ć67.........
Figure 6Ć32:ăA16 Low Voltage Power Supply Module Isolation
Troubleshooting Procedure 6Ć68................................
Figure 6Ć33:ăPower Supply Voltage Measurement Locations 6Ć70.......
Figure 6Ć34:ăColor (TDS 644A) Display Troubleshooting Procedure 6Ć71.
Figure 6Ć35:ăHorizontal and Vertical Sync Signals - Color Display 6Ć72.
Figure 6Ć36:ăA Video Signal with White, Black, and Blanking
Levels - Color Display 6Ć72....................................
Figure 6Ć37:ăMonochrome (TDS 620A and 640A) Display
Troubleshooting Procedure 6Ć73................................
Figure 6Ć38:ăHorizontal and Vertical Sync Signals - Monochrome
Display 6Ć74..................................................
Figure 6Ć39:ăA Video Signal with White, Black, and Blanking
Levels - Monochrome Display 6Ć74.............................
Figure 6Ć40:ăProcessor/Acquisition Troubleshooting Procedure 6Ć75....
Figure 6Ć41:ăProcessor/Front Panel Troubleshooting Procedure 6Ć76....
Figure 6Ć42:ăAttenuator/Acquisition Troubleshooting Procedure 6Ć77....
Figure 6Ć43:ăA11 DRAM Processor/Display Module (View of
Right Side) 6Ć78...............................................
Figure 6Ć44:ăA11 DRAM Processor/Display Module (View of
Upper Left Corner) 6Ć79........................................
Figure 6Ć45:ăA11 DRAM Processor/Display Module (View of
Lower Left Corner) 6Ć79........................................
Figure 6Ć46:ăA10 Acquisition Module (View of Lower Left Corner) 6Ć80..
Figure 9Ć1:ăBlock Diagram 9Ć2....................................
Figure 9Ć2:ăInterconnections 9Ć4...................................
Figure 10Ć1:ăExternal Modules 10Ć5.................................
Figure 10Ć2:ăOuterĆChassis Modules 10Ć7............................
Figure 10Ć3:ăInnerĆChassis Modules - A30 Display Shown 10Ć9........
Figure 10Ć4:ăCables 10Ć11..........................................
Figure 10Ć5:ăFloppy Disk 10Ć13......................................
Figure 10Ć6:ăAccessories 10Ć14......................................
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