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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
PT-56DLX76 / PT-61DLX76 / PT-61DLX26
COLOR WHEEL INDEX DELAY ADJUSTMENT
Purpose: To set the standard color index. Symptom of Misadjustment: Many vertical stripes will appear.
OTHER O O C W D G P P W B D C T T HPOSI 8000 VPOSI 8000 INDEX DELAY00FD 00 1/1
1. Display the Red ramp pattern by pressing the ASPECT key. 2. Adjust "CW INDEX DELAY" value by pressing the VOLUME UP/DOWN key so that red ramp pattern is even, with no discoloration.
OTHER O O C W D G P P W B D C T T HPOSI 8000 VPOSI 8000 INDEX DELAY00F0 00 1/1
P :05060101
P :05060101
<Red ramp pattern>
Fig. E5-1 3. Display the Green ramp pattern by pressing the ASPECT key. 4. Confirm the green ramp pattern is even, with no discoloration. If not, adjust "CW INDEX DELAY" value by pressing the VOLUME UP/DOWN key.
OTHER O O C W D G P P W B D C T T HPOSI 8000 VPOSI 8000 INDEX DELAY00F0 00 1/1
SET UP: 1. Install the Projection Unit into the Cabinet. 2. Enter Work Mode. Then, enter Factory Adjust Mode. 3. Press the CH UP/DOWN key on the remote to select "OTHER" on menu and press the OK key. (Other menu will appear.) 4. Press the CH UP/DOWN key on the remote to select "CW INDEX DELEY" on menu and press the ASPECT key once to select "Red ramp pattern." To release this mode: 1. After completing the adjustment, press the CH UP/DOWN key on the remote to return to the Other menu. 2. Then, press RECALL key twice to return to Work Mode, and turn off the power.
P :05060101
<Green ramp pattern>
Fig. E5-2 5. Display the Blue ramp pattern by pressing the ASPECT key. 6. Confirm the blue ramp pattern is even, with no discoloration. If not, adjust "CW INDEX DELAY" value by pressing the VOLUME UP/DOWN key.
OTHER O O C W D G P P W B D C T T HPOSI 8000 VPOSI 8000 INDEX DELAY00F0 00 1/1
P :05060101
<Blue ramp pattern>
Fig. E5-3 7. Repeat the above steps until all patterns are even, with no discoloration. Note: After this adjustment, do not copy using the EEP COPY L->DG in the Factory Adjust Mode. Otherwise, the factory default data of the Projection Unit will be copied to EEPROM IC on the Main P.C.B., and re-adjustment will be necessary.
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