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tres bon document
cela a permis de verifier la connection de l'ecran
merci
salutations
;
The manual was of good quality with high resolution schematic diagrams.
;
The manual was very clear and contained all the information I was looking for. My dishwasher is working again because of this servicemanual!
;
Quality scan, great manual. I solved my problem with this manual.
 ;
The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
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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