Originally Posted by SoNic67
Replaced the Sanyo SD-HD65 laser in a DVD-2930 and though to post here a how-to and some pics.
5. Turn over the player and remove the bottom metalic plate (lots of screws, holding two identical plates).
6. There are two small screws, marked in my pics. Remove them.
7. Disconnect the two cables shown in my pics. Pics shows the loader removed already, the connectors are accesible from under the player.The flat cable (you can see it in the above picture, I forgot to circle it) require that you to pull first the edge of the connector for release.
8. Turn the player back in normal position. There are 4 screws (#1 Phillips head) that are holding the loader. I did marke them on my pics. Remove the screws.
10. "Jiggle" the loader out from the player.
Now you need to release the tray to move it back and forth and expose the laser pick up assambly. Push the bottom unlocking plastic bar in the direction shown in my pic.
11. Unscrew and remove the bar holding the round metal sliders. Pull them out from the opposite holders. Gently remove the laser pick-up assambly. The gears are fragile! Hold on to the springs from the back side!
12. Place the new laser pick-up assambly on the sliders.
13. Reinstall. When screws and connectors are back in place (not before), take a solder gun and some desolder wick and remove the short-circuit protective bubble shown in my pics. Don't forget to push back the connector latch!
14. Put the top and bottom covers back. Plug back the power cord. Using the service manual instructions reset the laser curent value to the new one and zero the "laser on" timer.
I have done this myself and am still running into one problem. I can't "decode" the service manual instructions to update the "current value" for the new head, and frankly don't even know where to look on the head for the new value.
The player does in fact now play DVDs fine, but still doesn't recognize CDs. I saw in someone else's instructions that aside from the current value, he mentions "initializing" the player and his claim was that if you didn't initialize it, the player would still not play CDs (as is the symptom I am experiencing). I understand it may still play SuperAudio CDs, but I have none, so I'm handicapped at the moment.
Your instructions are both thorough and helpful (wish I'd seen them earlier), but I might add that I didn't need to remove the entire player assembly. Instead, I ejected the tray and then disconnected power, leaving the tray in the fully open position. This gave me access to the entire rail assembly from above, and I worked completely from the top inside the player.
What I did do wrong the first time is to crack loose one of the hex screws and take it out, the one on the rail that goes through the head in two spots - the wide end or bottom in your images. Fortunately the threadlock was visible on both the screw and bracket, and I was able to place the screw back in its original position.
Also, you don't actually need to remove the other rail (the one on top at the narrow end of the head) since the head's narrow end has a slip-over guide rather than completely closed guides as the pair in the wide end have. Only the rail that goes through the white gear assembly and wide end of the head need be removed.
Back to my problem...
So, can anyone help me by describing the process of entering the new "current" value for the head, where I might find that value (there's two sets of numbers - one on the bottom and one on the curved side)? Also if there is something I was doing wrong to initialize, a little help here would be great as well.
Hopefully with an update to those numbers (and initialization), the player will come back to life completely. Otherwise, I'll be relegated to using it just for DVDs and I'll have to keep using my Pioneer DVL-909 Laserdisc player as a CD player!!