Service manual
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2.3.3 OSM display matrix .................................................................................................. 2-3
2.3.3.1 User mode ................................................................................................... 2-3
2.3.3.2 Factory mode .............................................................................................. 2-4
2.4 Adjustment ........................................................................................................................... 2-7
2.4.1 How to select the factory adjustment (FACTORY) mode ................................... 2-7
2.4.1.1 Selecting with front panel switches ......................................................... 2-7
2.4.2 Adjustments before aging........................................................................................ 2-7
2.4.2.1 Adjusting the high voltage and high voltage protector ......................... 2-7
2.4.2.2 FOCUS adjustment (Rough adjustment) ................................................ 2-8
2.4.2.3 Shock test .................................................................................................... 2-8
2.4.2.4 Preadjustment before aging...................................................................... 2-8
2.4.2.5 Adjusting the landing (ITC/4 corner purity adjustment)........................ 2-9
2.4.3 Adjusting the picture size, position and distortion, DBF amplitude and phase 2-9
2.4.3.1 Adjusting the picture inclination ............................................................... 2-9
2.4.3.2 Adjusting the back raster position ........................................................... 2-9
2.4.3.3 Adjusting the left/right distortion, picture width, picture position (LEFT/
RIGHT) and vertical linearity (all preset)................................................ 2-10
2.4.3.4 Adjusting the DBF amplitude and phase ................................................ 2-10
2.4.4 Adjusting the cut off ................................................................................................. 2-11
2.4.4.1 Adjusting BTCEN (BRIGHT-CENT), BTMAX (BRIGHT-MAX) and BS1
(BIAS-H)....................................................................................................... 2-11
2.4.4.2 Adjusting BS2 (BIAS-M) / BS3 (BIAS-L).................................................. 2-12
2.4.5 Setting CONSTANT BRIGHTNESS circuit (Factory mode)................................ 2-13
2.4.5.1 Reading beam current default data ......................................................... 2-13
2.4.5.2 Confirming CONSTANT BRIGHTNESS function ................................... 2-13
2.4.6 Adjusting the RGB drive signal............................................................................... 2-13
2.4.6.1 Adjusting GN1 (GAIN-H) (adjustment of 9300K) .................................. 2-13
2.4.6.2 Adjusting ABL.............................................................................................. 2-15
2.4.7 Adjusting the focus ................................................................................................... 2-15
2.4.8 Adjusting the convergence ...................................................................................... 2-16
2.4.8.1 Adjusting with ITC ...................................................................................... 2-16
2.4.8.2 Adjusting DDCP .......................................................................................... 2-18
2.4.9 Default settings (With factory mode) ..................................................................... 2-23
2.5 Inspections (In normal mode) ........................................................................................... 2-24
2.5.1 Electrical performance ............................................................................................. 2-24
2.5.1.1 Withstand voltage ....................................................................................... 2-24
2.5.1.2 Grounding conductivity check .................................................................. 2-24
2.5.1.3 Degaussing coil operation......................................................................... 2-24
2.5.1.4 IPM OFF MODE function operation (Set the AC power input to 230V) ....... 2-24
2.5.1.5 Confirming the GLOBAL SYNC (CORNER-Purity) function................. 2-25
2.5.1.6 Focus, picture performance ...................................................................... 2-25