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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.
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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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7.1.6 OUTLINE OF THE WAVEFORMS RECEIVED BY THE DSP SECTION
A
The illustrated signal waveform is an example of the signal waveform when a Dolby Digital (Fs = 48 kHz) signal is received. It must be noted that a frequency (waveform period) other than that of the Master clock supplied to the DSP section changes depending on the format of input signals or mode of the unit. It must also be noted that the waveform being observed changes depending on the environment of the measurement system (high-frequency characteristics of an oscilloscope or a probe, grounding method, etc.). (The numbers 1-9 of the waveform names correspond to those of the waveform data and those in the clock flowchart.)
S/PDIF signal waveforms
� Flow indicated with " " in the clock flowchart Aperiodic rectangular-wave signal 1 COAXIAL or demodulator input: Amplitude of approx. 5 Vp-p (when the signal is input to IC101) 2 OPTICAL input: Amplitude of approx. 4 Vp-p (when the signal is input to IC101) 3 OPTICAL output: Amplitude of approx. 3.3 Vp-p (when the signal is output from IC101) In the following waveforms, the amplitude of all clocks is approx. 3.3 Vp-p.
B
Audio data waveform
� Flow indicated with " " in the clock flowchart Aperiodic rectangular-wave signal 4 Audio data waveform
Audio bit clock waveform
C
� Flow indicated with " " in the clock flowchart Aperiodic rectangular-wave signal 5 Bit clock waveform
Audio L/R clock waveform
� Flow indicated with " " in the clock flowchart Aperiodic rectangular-wave signal 6 L/R clock waveform (except 2nd DPS) Waveforms of the lines other than those supplied to the second DSP 7 L/R clock waveform (2nd DPS) Waveforms generated in the block that supplies signals to the second DSP
Audio master clock waveform
D
� Flow indicated with " " in the clock flowchart Aperiodic rectangular-wave signal 8 Master clock waveform (for Audio signal)
DSP master clock waveform
� Flow indicated with " " in the clock flowchart Aperiodic rectangular-wave signal 9 Master clock waveform (for DSP) Only this clock operates on a fixed frequency: 12.5 MHz (80 ns).
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VSX-59TXi
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