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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.
 ;
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.
5
6
7
8
I
IC101 (Pin 94) Is there a master clock (24.576 MHz)? Yes IC651 (Pin 12) LCK1 Is there abnormality at the parts and patterns in the path? Is there abnormality at the parts and patterns in the path?
Check the following points when the source is DVD-A. IC101 (Pin 79) SDTI Is there abnormality at the parts and patterns in the path?
A
No
No
Is there No a audio data (with Sch source)? Yes IC101 (Pin 80) CDTI
No Replace IC101.
Replace IC291 or IC101.
Is there a LR clock ? Yes IC101 (Pin 88) Is there a LR clock ? Yes IC651 (Pin 7)
No
No
Is there No a audio data (with Cch source)? Yes IC101 (Pin 81) BDTI
Is there abnormality at the parts and patterns in the path?
No Replace IC101.
B
Replace IC651 or IC101.
No
Is there abnormality at the parts and patterns in the path?
No
Is there No a audio data (with SBch source)? Yes
Is there abnormality at the parts and patterns in the path?
No Replace IC101.
Replace IC651 or IC101. BCK1 Is there abnormality at the parts and patterns in the path?
C
To Step 6
Is there a bit clock ? Yes IC101 (Pin 89)
No
No
Step 6: Audio Clock (2nd DSP from 1st DSP)
IC291 (Pin 4) MCLK
Replace IC651 or IC101.
Is there a master clock (24.576 MHz)? Yes IC291 (Pin 6)
No
Is there abnormality at the parts and patterns in the path?
No
Is there a bit clock ? Yes IC651 (Pin 4)
No
Is there abnormality at the parts and patterns in the path?
Replace IC291.
D
No
MCK2
Replace IC651 or IC101. FDT1 Is there abnormality at the parts and patterns in the path?
Is there a master clock (24.576 MHz)? Yes IC201 (Pin 73)
No
Is there abnormality at the parts and patterns in the path?
No
Is there a audio data ? Yes IC101 (Pin 78)
No
No
Replace IC291 or IC201.
Replace IC651 or IC101.
Is there a master clock (24.576 MHz)? Yes IC101 (Pin 86)
No
Is there abnormality at the parts and patterns in the path?
No
E
Is there a audio data ? Yes
No
Is there abnormality at the parts and patterns in the path?
Replace IC201. LCK2 Is there abnormality at the parts and patterns in the path?
No
Replace IC651 or IC101.
Is there a LR clock ? Yes
No
No
Failure in 1st DSP block, Go to Step 8.
F
J
VSX-2016AV-S
5 6 7 8
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