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This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
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IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
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Very usefull, good quality drawings !
Muito útil encontrei todas as informações necessárias.
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Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
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GOOD SERVICE MANUAL.I ALWAYS BUY THERE IF I FIND WHAT I AM LOKING
Alignment and Adjustments
4-4 SCREEN Adjustment
1. Input Toshiba Pattern 2. Enter �Service Mode�.(Refer to �Service Mode�) 3. Select �G2-Adjust�. 4. Set the values as below. 29 Inch IBRM = 215 WDRV = 44 -> 47 CDL = 235 -> 210 COLR G B = 122 -> 45 5. Turn the SCREEN VR until �MRCR G B� and �MRWDG� are green and those value are about 100. (The incorrect SCREEN Voltage may result that �MRCR G B� and �MRWDG� should be red)
Note 1. When you do not have Toshiba Pattern, follow this method. 1. 2. 3. 4. 5. Set the TV on the condition that AV mode no signal(black) Enter the �Menu� and set the mode to blue screen off. Enter the �Service Mode�. Select � G2-Adjust�. Set the values as below. IBRM = 215 WDRV = 47 CDL = 210 COLR G B = 45 6. Turn the SCREEN VR until the value of � MRCR G B� is about 120. Do not mind that the �OSD� Color is red.
� After completing G2-Adjust, follow this procedure. ! Enter the �Video Adjust 1�. @ Choose any item in menu. (ex. Select �Red Cutoff�) # Change the value of item you select, and recover the value.
For example, when the value of �Red Cutoff� is 127, change the value to 128 and restore the value to 127. If you do not follow this procedure, the picture may be abnormal. For example, when the TV set is on, the picture becames brighter gradually.
4-2
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