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Dragon fever CD DCD2560GL reading a little card, and sometimes could not be read

Time£º2015-05-31 08:41:40  Source£ºNetwork  Author£ºUnknown  Clicks£º1425
  

DENON audio as a veteran audio brand, reputation in the Chinese market along with Onkyo, Yamaha, Denon CD and DVD player, Onkyo is no, Yamaha is very small. Chongqing into audio Denon CD maintenance has accumulated a wealth of practical experience, for Denon CD player,u5aservice manual download site
u5aservice manual download site
Denon Blu-ray player DVD player and digital circuits, are very familiar with the properties, parameters, maintenance tips, especially some old classic fever CD machine, we have the original accessories, as these older machines show the new performance. Below, sharing a DCD2560GL repair.u5aservice manual download site
Symptom: client speak first read a bit and sometimes could not be read, he opened the laser head is not dirty, then adjust the potentiometer on the servo plate, a little improved, spent more than a month after the total death.u5aservice manual download site
u5aservice manual download site
I am energized to put in a CD disc, NO DISE to display after a few seconds.u5aservice manual download site
Laser head of models is Sony KSS-210B, measurement has about laser tube of resistance value, has aging, I for Shang has a only original with frame of laser head Hou, boot first with original CD dish try machine, can read dish, not card, but FR waveform output somewhat shook, adjustment to appropriate range Hou still enough clear, into computer records dish Hou read up is difficult, voice has jitter among among sound. Measurements to gather brownouts, it appears that he is still few potentiometers are not brought back to their original positions after a repeated adjustment, and finally restore the engraved plates.u5aservice manual download site
Slightly better on the CD in the servo plate has a potentiometer to adjust the laser head servo parametersu5aservice manual download site
u5aservice manual download site
When these values at the factory is fixed after strictly precise adjustments, users don't need to adjust, so, when aging laser head of the machine should be replaced in a timely manner, rather than by adjusting these parameters to improve, because although it is difficult to revert to the original value, we are not manufacturers of advanced technology and equipment.