I have problem with Kss150-210 laser in Denon dcd1460. After inserting disk, lens go up an down, disk not rotate, just move a few degrees and no disc. I changed laser optic (removed safety blob) to another and problem is the same. Test run gives result Error 2 ...no FGS (focus gain signal) detected, Measuring current on driver transistor shows voltage drop of around 1,4v on 22r ,so around 65ma current sucks the laser. Voltage on Laserled suply jump to 2v after play. No eye pattern is vissible on test pins. I cleaned laser start position switch.
I am confused that new laser is damaged because it shows same symptoms. Any help where to continue'
Thank you.
I am confused that new laser is damaged because it shows same symptoms. Any help where to continue'
Thank you.
Attachments
I don't think any new laser lens pickup will work out-of-the-box without requiring even minor adjustments.
Do you have oscilloscope? You'd need one and the Service Manual for this unit (available at hifiengine as I see...)
so to check the "eye pattern" at the very least (Adjustment section - page 21 onwards) .
Also, why do you mention KSS-210? The service manual clearly states that the laser unit is the KSS-150A.
I know they both look identical externally, but are they identical actually?
Do you have oscilloscope? You'd need one and the Service Manual for this unit (available at hifiengine as I see...)
so to check the "eye pattern" at the very least (Adjustment section - page 21 onwards) .
Also, why do you mention KSS-210? The service manual clearly states that the laser unit is the KSS-150A.
I know they both look identical externally, but are they identical actually?
Laser pickup looks to be fine. Why it doesn't run? I'd not touch any adjust. There must be a problem. Look for any bad soldering, check power voltages...
Hi, i did not adjust anything because i was confussed why old and new laser has identical failure. Kss210 is replacement for 150A. Scope does not help because no signal comes from laser. As i wrote, Run service test shows Error2...no FSG ...no focus signal gain detected. No eye pattern is vissible on test pin. Can be laser driver transistor or capacitor 100uf?
Motor is ok, Logic do not turn the disc if no focus signal is present, so i must solve why focus signal is not coming back to CXA1081.
