GRAPHTEC FC2250 Service Manual page 6

7.5 Y Bar Part ........................................................................................................7-36
7.5.1 Y Bar ....................................................................................................................................................... 7-36
7.5.2 Preparations before detaching the Y bar ............................................................................................ 7-38
7.5.3 Checking the Sliding of the Y Bar Frame (Manual Check) ................................................................. 7-39
7.5.4 Adjusting the Perpendicularity Precision ........................................................................................... 7-40
7.5.5 Y Belt ....................................................................................................................................................... 7-42
7.5.6 Adjusting the Y Belt Tension ................................................................................................................ 7-43
7.5.7 Y Flexible Cable ..................................................................................................................................... 7-45
7.5.8 Preparing the Y Flexible Cable Assembly ........................................................................................... 7-52
7.5.9 Y Home Sensor ...................................................................................................................................... 7-54
7.5.10 Y Drive Belt ............................................................................................................................................. 7-56
7.5.11 Y Slider ................................................................................................................................................... 7-58
7.5.12 Adjusting the Roller Pressure of the Y Slider ..................................................................................... 7-62
7.6 X Slider ............................................................................................................7-63
7.6.1 Front X Slider ......................................................................................................................................... 7-63
7.6.2 Adjusting the Roller tension of the Front X Slider ............................................................................. 7-64
7.6.3 Rear X Slider .......................................................................................................................................... 7-65
7.6.4 Adjusting the Roller Tension of the Rear X Slider .............................................................................. 7-66
7.7 Control Box .....................................................................................................7-68
7.7.1 Main Board ............................................................................................................................................. 7-68
7.7.2 Main Relay Board .................................................................................................................................. 7-69
7.7.3 Power Supply Board ............................................................................................................................. 7-70
7.7.4 Power Supply Relay Board ................................................................................................................... 7-71
7.8 Replacing the Electrostatic Adhesion Plate .................................................7-72
7.8.1 Peeling Off the Electrostatic Adhesion Plate ...................................................................................... 7-72
7.8.2 Preliminary Preparations for Pasting On New Plate .......................................................................... 7-73
7.8.3 Attaching the Electrostatic Adhesion Plate ........................................................................................ 7-74
8. ELECTRICAL ADJUSTMENTS ......................................8-1
8.1 List of Items Requiring Readjustment ............................................................8-1
8.2 Flowchart of the Adjustment Sequence .........................................................8-2
8.2.1 The main board was replaced ................................................................................................................ 8-2
8.2.2 The pen block was replaced ................................................................................................................... 8-3
8.2.3 The X home sensor was replaced .......................................................................................................... 8-3
8.2.4 The Y home sensor was replaced .......................................................................................................... 8-4
8.2.5 The registration mark sensor was replaced ......................................................................................... 8-4
8.2.6 The X or Y motor was replaced .............................................................................................................. 8-4
8.2.7 The X or Y belt was replaced .................................................................................................................. 8-5
8.2.8 The Y bar was removed ........................................................................................................................... 8-5
FC2250-UM-251-9370 iv