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Very quality copy of original service manual, which contains the circuit diagrams, PCB and lists of components, well as recommendation for calibration procedures of device, also everything else, that need for repair, tuning and use this oscilloscope.
All presented copies have high-resolution, so you can view all in detail.
This manual will very useful for simple owners and for repairers.
I recommend these manual, because myself is owner of Philips PM3216 and I need sometimes servicing these oscilloscope (principally calibrating).
Also, these document is an example of excellent design of technical documentation.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
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manual excelente completo , diagramas y esquemas bien presentados y buena calidad de imagen.
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muy buen manual completo de buena calidad de impresion preciso y detallado , muy útil para la reparación.
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The service manual is a good quality scan of the Panasonic NV-850, which is electrically identical to the Philips VR 6920, but mecanically just nearly.
AV-4300 AV-5000 2.4.3 Stadium Surround Check
Ad justment Procedure 1. Set to SURROUND : STADIUM " Check that the following waveforms are obtained (Input signal (1) and (2)). " Front : Chec k that the phas es of R and L are different and 400Hz is superimposed on 5kHz. The amplitudes of R and L are different. " Rear : Check that the phas es of R and L are opposite and 400Hz is superimpos ed on 5kHz. The amplitudes of R and L are different.
2.4.6 Concert Hall Surround / Monaural Check
Ad justment Procedure " Check that the following waveforms are obtained (Input signal (1) only).
" Front: The phas es of R and L are different. The amplitudes
are different.
" Rear: The phas es of R and L are opposite. The amplitudes
of R and L are equal.
No te: The monaural check c an be omitted. Amplitude levels of front R and L are not even depending on the P.W.B. Center has no output. Note: Center has no output.
2.4.7 Dolby Pro-logic Che ck
Ad justment Procedure 1. Set to DOLBY PROLOGIC " Check that the following waveforms are obtained (Input signal (1) and (2)).
" Front : 400Hz is superimpos ed on 5kHz. " Rear : R and L are the same signal and 400Hz is
2.4.4 Stadium Surround/Monaural Check
Ad justment Procedure
" Check that the following waveforms are obtained.
(Input signal (1) only)
" Front: R and L waveforms are almost equal. " Rear: R and L waveforms are almost Zero.
superimposed on 5kHz.
No te: Center has no output.
No te: MODE is PROLOGIC (NORMAL)
2.4.5 Conc ert Surround Check
Ad justment Procedure 1. Set to SURROUND: CONCERT HALL. (Input signal (1) and (2)).
" Front: Check that the phases R and L signals are different
2.4.8 Dolby Pro-logic / Monaural Check
Ad justment Procedure " Check that the following waveforms are obtained (Input signal (1) only).
" Front: Almost no output from both R and L. " Center: Same as the audio input signal. " Rear: Almost no output from R and L.
and 400 Hz is superimposed on 5kHz.
" Rear: Check that the R and L are opposite and 400Hz is
superimposed on 5kHz.The R and L amplitudes are equal.
No te: Amplitude levels of front R and L are not even depending on P.W.B. Center has no output.
No. 51876
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