7
ALIGNMENT INSTRUCTIONS
2) FOCUS ADJUSTMENT
• Turn in a local station and adjust the Focus Control knob (located on FBT) for best picture
details at high light condition.
3) RF AGC DELAY ADJUSTMENT (S5)
• Receive a good local channel.
• Enter the service mode and select service adjustment S5.
• You can see the OSD as shown in below.
• Select RFAGCD item, press the volume up or down button until noise or beat in picture disappears.
• Press the DISPLAY button to memorize the data.
4) GEOMETRIC ADJUSTMENTS (S6)
• Enter the service mode and select service adjustment S7.
• Whenever you select the “S7” using the volume up or down button, the screen is changing like this.
NORMAL BLACK WHITE100 WHITE60 CROSS
• Using the volume up or down button, select internal cross pattern.
• Select service adjustment S6.
• You can see the OSD as shown in below.
4-1. Horizontal Position Adjustment
• Select H.PHASE item, adjust H.PHASE data value to obtain proper horizontal centering of the
internal cross pattern at the left and right of the screen.
4-2. Vertical Position Adjustment
• Select V.POSI item, adjust V.POSI data value to center the raster properly on the screen.
Summary of Contents for DTH-20D5FSN
Page 4: ...CIRCUIT BLOCK DIAGRAM 3...
Page 11: ...SCHEMATIC DIAGRAM 10...
Page 12: ...PRINTED CIRCUIT BOARD PCB MAIN 11...
Page 13: ...12 EXPLODED VIEW DTH 20D5FSN...
Page 14: ...13 EXPLODED VIEW DTH 21D4FSN...
Page 39: ...TROUBLESHOOTING GUIDE APPENDIX 5 NO COLOR 6 NO VERTICAL DEFLECTION 38...
Page 40: ...TROUBLESHOOTING GUIDE APPENDIX 39 7 NO ON SCREEN DISPLAY 8 REMOTE CONTROL DOES NOT OPERATE...