I was in need of a philips VAM1202/21 laser unit, but that is quite rare and expensive to come by, so decided to transplant the little PCB to a VAM1202/12 which has (supposedly) the same laser unit but the /12 has on board laser driver circuit, /21 does not have this, break out cable is also different. So the transplant was successfull, but the laser current trimmer was set for the old laser, after the transplantation the new pickup was not much better, in terms of reading discs. I added a little more current to the laser and after that it read the cds well, but now I'm unsure if I'm overstress the laser diode. I found the service manual of the philips CDM12.1 which is a close relative to the VAM1202/12, the manual says 4-6V and 60-90mA supply for the laser, but after installation I only could measure 2V on the laser, and the current was 160mA ,that's quite far from the "ideal" but mine is a VAM the manual is for the CDM. How can I determine the optimal laser current? By the way the CD player is an USHER CD100, and has a TDA1300T as laser driver/amplifier
Just wind it up til it works, if it fails, youll know something went wrong
Ha! Look the new guy!
The thing is the CD player is not mine, and they are actually paying for the service, so a premature laser death isn't looking good in my CV... it seems the things are settled now, I was able to set a laser level that is up to specs, and reads the cds good as well, so I think that will do the job.
zjjxhzf: hello Gabor i am DLP projectorColor wheel is not accurate，setup memory， the phase angle cant setting for the color wheel ，must use service code.
Sept 19, 2017 1:31:25 GMT -5
mastertech: Hi stranger. Guess you spent your summer cruising on that street bike.
Sept 17, 2017 21:43:54 GMT -5
nashou: Hey everyone, just saying hi ! Hvent been here for a while hope you're all doing well !!
Sept 17, 2017 19:19:25 GMT -5
mastertech: Parts for repair are no longer available.
Sept 11, 2017 19:42:24 GMT -5
mayavi: my pioneer elite VSX-92TXH it freezes until I unplug and then it won't power on until maybe 10 minutes. came to know that its a common problem in this model. any help would be much appreciated......
Sept 11, 2017 13:39:10 GMT -5
jaredjaric: Thanks so much Hulio :), your expertise is very much respected
Aug 20, 2017 9:25:37 GMT -5
Admin: james: you need to post in the thread where your problem is being discussed.
Aug 9, 2017 19:51:54 GMT -5
james: Yes Sir All wiring was connected.
Aug 9, 2017 7:46:15 GMT -5
Admin: I have uploaded a copy of the SM to the digital projector section.
Jan 10, 2017 20:21:56 GMT -5
ducki: sorrry for my bad english ....(google translate
Jan 10, 2017 17:44:21 GMT -5
ducki: I have the same defect as a cp-x4021n you but can not start it ... I did the same trials with ic202 pc102 and still do not like, I make short pin 1 and 2 of the pc102 and PJ light (orange) goes off ... you can help me with a service manual for this PJ? TNX
Jan 10, 2017 17:43:46 GMT -5
jlb12: pwr switch off = 2(0.0) 3(11.7) 6(.04) 7(.04)
Dec 13, 2016 23:27:03 GMT -5
jlb12: No Problem. Thank you for all your help.
Dec 13, 2016 0:20:40 GMT -5