Marantz Marantz from the Japan acoustic fever brand for a sound like that, not at all strange, and Onkyo, Denon, Yamaha together are called the four Japan audio brand, who has four lengths, each have areas of expertise or wouldn't result in malicious competition. Marantz products which are mainly in the field of HIFI,5ecservice manual download site
5ecservice manual download site
Known as the two-channel music system, that is CD player and a power amplifier. Paper with Chongqing into a Marantz CD player and amplifier maintenance maintenance maintenance work in the accumulation of experience, discussion on some related repair tips, for Internet users to share, discuss with your peers.5ecservice manual download site
5ecservice manual download site
Generally speaking, Japan brand of electrical appliances still made audio quality is pretty good and durable, it is had to admit that fact, to take just one potentiometer, an APLS Alps potentiometer to sell RMB 50 Yuan and Chongqing jalam potentiometer of the electronic city just a dollar a selling much cheaper,5ecservice manual download site
5ecservice manual download site
These units also was on the use of domestic audio products, is either worn down after a year or two doesn't work, either a turn there will be noise. But we also take a look at Japan's old amplifier, machines for more than 10 years, has few key failures, neither few potentiometers. This is not a technical issue, but one of mentality. Below, from a few Marantz service share some experience.5ecservice manual download site
Fuling district there is a customer, he has a Marantz PM-4 pure class a amplifier, spent a lot of years, now there is only little problem, send to repair right channel sound normal, left channel sound is very weak. Left and right channel separately testing, symptoms, indicating faults within the machine.5ecservice manual download site
5ecservice manual download site
Opened cover Hou with oscilloscope measurement signal, around channel entered of audio signal are to has front Board of balance switch, after seriously of observation, finally lane understand signal process, entered signal from behind pass line to Panel tones conversion switch, then to balance switch, out and with line received back of letter source conversion switch, conversion Hou with line sent to amplifier Board plug needle Shang, with oscilloscope observation on not difficult found, to amplifier Board entered end Hou signal tomorrow mourning weak and accompanied by miscellaneous wave, try with cleaning each conversion switch Hou, around channel volume are normal ，

 3    1 2 3 Next Last