Awesome manual. Complete diagrams of all board assemblies as well as how to get to each part of the t.v. down to the individual screws and their locations. Get it.
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.
IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
Text excerpt from page 81 (click to view)
1
An image is light or blurred entirely.
� Is the toner low? (Is "Toner Low" being displayed?) � Yes
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Supply a toner.
� No � No
Is the specified paper being used? Use the specified paper. Is the lens of the LED head dirty? Clean the LED head.
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� Yes
� Yes
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� No
Is the LED head installed correctly? (Check the CN6 connector of the main control board.) � No Install the LED head correctly. Is the contact plate of the transfer roller in correct contact with the high-voltage power supply board? (See Figure 6-4 F .) Is the terminal of the EP unit in correct contact with the contact plate? (See Figure 6-4 A and B )? Contact the terminal correctly. Replace the transfer roller.
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� Yes
� Yes
� No
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� Yes
� Has this error been recovered? � Yes
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End
� No
Replace the EP unit.
� Has this error been recovered? � Yes End Caution: After replacing the EP unit, reset the drum counter. (Refer to "Replacing the Drum Cartridge" in "User's Manual".)
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� No
Replace the main control board or high-voltage power supply board.
