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Manual was a good representation of service infomation for the EWV404. It worked well for my repair.
Great quality copy, right what I was looking for, all I need to fix my radio.
I BOUGHT A PAIR OF INFINITY VINTAGE SPEAKERS THAT REQUIRED TO BE REPAIRED AND THE ELECTRONIC TECHNICIAN ASKED ME FOR THE SERVICE MANUAL.
I TRIED TO GET IT AT THE MANUFACTURER'S SITE WITH NO SUCCESS, SO I STARTED TO LOOK FOR IT IN THE WEB FOR A LONG TIME, UNTIL I FOUND THE SERVICE MANUAL IN THIS EXCELLENT SITE "OWNER'S MANUAL.COM".
NOW I HAVE MY SPEAKERS WORKING AND ENJOYING THE MUSIC I LIKE.
THANKS TO "OWNER`S MANUAL.COM" I RECOMMEND THIS SITE TO EVERYONE.
Very quick response. Very good and accurate print quality of the scanned document.
The service manual was very usable and clear enough to see the individual values of all of the components (unlike some of the service manuals I have gotten in the past from web sites similar to this one). The price was right and the information was greatly appreciated. It helped me with an otherwise very difficult repair. It was much needed and appreciated. A faster turn around on my order would be nice, but I understand the constraints on your staff's time. Thank you for your service.
Flow of functional operation until TOC read
Slider turns REST SW ON.
Confirm that the voltage at the pin5 of CN705-1 is "H"\"L"\"H".
Automatic tuning of TE offset
Check that the voltage at the
pin40 of IC701 is + 5V?
Detection of disc
Automatic tuning of Focus offset Confirm that the Focus error S-cuve signal at the pin32 of IC701 is approx.2Vp-p Confirm that the signal from pin24 IC701 is 0V as a accelerated pulse during approx.400ms.
Automatic measurement of Focus S-curve amplitude
Disc is rotated
Tracking error waveform at TOC reading pin 20 of IC702(TE)
Approx. 1.8V VREF
Focus servo ON (Tracking servo ON)
Automatic measurement of Tracking error amplitude
Tracking Disc to be servo braked to stop on states Disc states TOC reading to rotate finishes Automatic measurement of TE amplitude and automatic tuning of 500mv/div 2ms/div Fig.1 TE balance Tracking servo off states
Confirm the waveform of the Tracking error signal. at the pin 20 of IC702 (R705) (See Fig.1)
Automatic tuning of Tracking error balance
Automatic tuning of Focus error balance
Automatic tuning of Focus error gain
Automatic tuning of Tracking error gain
Confirm the eye-pattern at the lead of TP713
Play a disc
Complete owner's manual in digital format. The manual will be available for download as PDF file aft…