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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.
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perfect copy, im very satisfied, i was need the diagram over the powersupply and
the copy was very sharp
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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.
* BASE UNIT
Symptom Dead unit � � � No ring � � Cause Faulty AC-DC adapter Faulty LM317T(BU8) Faulty 9.6MHz crystal Faulty BU9, BC52 Open BD10 BZ1 , BZ2, BU7 fail BU1 fail Faulty BX1, BU4 � � � � � Remedy Replace AC DC adapter Check and replace as necessary Check and replace as necessary Check and replace as necessary Check and replace as necessary
Phone on fail No TX/RX
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Check and replace as necessary Check BU4 PIN46, PIN47, and surrounding circuit, replace defective components as necessary
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Open BD6, BD7, BD8, BD9, BL3, BL4, BRV1 Faulty BU4 Charge contact dirty Contact fail
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Check and replace as necessary
No DTMF Charge fail Page key no function
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Check and replace as necessary Clean or replace Check the key and rework it
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