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I was very glad recieving the service manal from You. Additionaly very fast. Extremaly nice servicing. Thanks very mach! Now my GX-220 working better, than it was made. Alexander from Moscow, Russia/
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Sweet! I won the item on eBay and couldn't adjust the geometry or even keep a steady picure. This guide has the full schematics (not available anywhere else as far as I could tell), and was a bargain for the wealth of knowledge it contains. I hooked it up to my testing equipment, tweaked a few potentiometers and got it playing videogames in no time. Thanks!
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It was just what I need to fix my old BMW's CD player. Very convenient also. Thank you.
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Great Manual! It contains all the wiring schematics and mechanical exploded views that are essential for service and repair. I was surprised I even found this for such an old machine. Only wish I knew of this site many years ago.
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Great manual very clear copied. You are making an incredible job. I appreciate a lot the rapidity and your efficiency. Thanks a lot
GB 18
A10E AA 01.01
Alignments
Align the vertical centre of the picture to the vertical centre of the CRT.This is the first alignment to be performed of the vertical alignments. For an easy alignment set SERV.BLK to ON. Vertical S-correction (VER. SCOR) Align the vertical linearity, meaning that vertical intervals of a grid-pattern must be equal over the entire height. Vertical amplitude (VER. AMPL) Align the picture height so that the complete test pattern is visible. Note that other vertical alignments are not compensated. Vertical shift (VER. SHIFT) Align the vertical centering so that the test pattern is located vertically in the middle. Repeat the 'vertical amplitude' alignment if necessary. Horizontal shift (HOR. SHIFT) Align the horizontal centre of the picture to the horizontal centre of the CRT. Horizontal parallelogram (HOR. PARALLEL) Align straight vertical lines in the top and the bottom; vertical rotation around the centre. East West width (EW. WIDTH) Align the picture width until the complete test pattern is visible. East West Upper Corner (EW. UCORN) Align straight vertical lines in the upper corners of the screen. East West Lower Corner (EW. LCORN) Align straight vertical lines in the lower corners of the screen. East West Trapezium (EW. TRAP) Align straight vertical lines in the middle of the screen. East West parabola (EW. PARA) Align straight vertical lines at the sides of the screen. Horizontal bow (HOR. BOW) Align straight horizontal lines in the top and the bottom; horizontal rotation around the centre.
East/West Trapezium
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Horizontal Parallel
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Horizontal Bow
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CL 96532156_012.eps 190101
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Figure 2 Initial Set-Up 1. Connect an external video pattern generator (PAL-475.25 MHz) to the aerial input of the TV-set with a crosshatch test pattern. 2. Set SMART PICTURE to NATURAL. 3. Activate the SAM-menu and select GEOMETRY. 4. Set VER.SCOR to value: � �8� for 28� WS picture tubes, � �13� for 25�, 28�, 29�, 32� and 34� 4:3 picture tubes, � �23� for 29� SF picture tubes. 5. Set VER.ZOOM to value: � 25 (for widescreens; set in SUPER WIDE mode to 35).
When a NTSC signal is used on one of the EXTERNAL inputs, the following additional alignments can be performed to correct the picture (descriptions above): 1. Horizontal width 60 Hz (H60. WIDTH) 2. Horizontal parallelogram 60Hz (H60. PARA) 3. Horizontal shift 60 Hz (H60. SHIFT) 4. Vertical amplitude 60 Hz (V60. AMPL) Sound There are no adjustments needed for SOUND. Default values: � � � � � � � NIC-FMAM = 250 2CS-FM = 40 PS-FM = 27 PS-NIC-BGDK = 58 PS-NIC-I = 127 PS-NIC-L = 58 DEVIATION = OFF
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Alignment Sequence For all sets: 1. 2. 3. 4. 5. 6. 7. 8. 9. Set SERV.BLK to ON Adjust VER.SLOPE Set SERV.BLK to OFF Adjust VER.AMPL and VER.SHIFT Adjust EW.WIDTH and HOR.SHIFT Adjust EW.PARA Adjust EW.UCORN and EW.LCORN Adjust EW.TRAP Adjust HOR.BOW and HOR.PARALLEL
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For widescreen sets only (go to super wide mode): 1. Set SERV.BLK to ON 2. Adjust VER.SLOPE 3. Set SERV.BLK to OFF 4. Adjust EW.WIDTH and HOR.SHIFT 5. Adjust EW.PARA 6. Adjust EW.UCORN and EW.LCORN 7. Adjust EW.TRAP 8. Adjust HOR.BOW and HOR.PARALLEL
Explanation of terminology � Service blanking (SERV. BLK) Switch the blanking of the lower half of the screen ON/OFF (to be used in combination with the vertical slope alignment). � Vertical slope (VER. SLOPE)
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