Sega CD Model 1 Repair...

[mcnougat]

I have a Sega Genesis Model 1 connected to a Sega CD Model 1, and the Genesis part works fine.

The Sega CD loads up the bios and prompts for a new disk, and the disk tray opens and closes, but there is no spin-up. The access light blinks forever, sometimes it spits the CD out again.

Sometimes I hear a clicking noise as the tray opens or closes, or when it just closed.

I've already tried cleaning the lens with 71% isopropyl alcohol but that hasn't worked.

What next?

Edit: Thanks in advance.

[Tokimemofan]

I have a Sega Genesis Model 1 connected to a Sega CD Model 1, and the Genesis part works fine.

The Sega CD loads up the bios and prompts for a new disk, and the disk tray opens and closes, but there is no spin-up. The access light blinks forever, sometimes it spits the CD out again.

Sometimes I hear a clicking noise as the tray opens or closes, or when it just closed.

I've already tried cleaning the lens with 71% isopropyl alcohol but that hasn't worked.

What next?

Wrong section. The tray normally goes in and then the spindle assembly rises to catch the CD. make sure that it properly completes that process as these tend to jam between those steps.

[mcnougat]

How do I do that? Has anyone else done it and posted a tutorial?

[Tokimemofan]

How do I do that? Has anyone else done it and posted a tutorial?

It isn't the easiest to do. Open the sega CD case and remove the grounding plate over the drive then hook it up. Watch it eject and reload the tray. If the spindle and laser don't rise to a level position then the sensor switch never gets flipped and it gives up and ejects the tray. I need to fix mine today so I'll take some photos

Make sure after opening that this is the revision that. If not look at thishttp://www.racketboy.com/forum/viewtopic.php?f=17&t=8063
Note the spring in one photo, that was what jammed in mine. fix it as shown if it is misaligned
Note the belt, these degrade over time, check for damage. If it looks good remove it and rinse it with some soap, remove any grease on the pulleys. Re-grease the gears if needed
Note the grey clip. near the blue switch, it should move smoothly hitting the switch one way or the other as the straight gear raises the spindle.
DO NOT REINSTALL THE TRAY SCREW UNTIL YOU PUSH THE TRAY TO THE BACK. That is the easiest mistake you could make, and you will have a lot of trouble fixing it.

[mcnougat]

Are you asking me to make the drive open and close while the Sega CD is disassembled enough for me to see what's going on inside? I can only make the drive open and close when the Sega Genesis is sitting on top of the Sega CD, connected through the intended port there. How do I do what you are asking of me?

Edit: And what 'revision' are you talking about?

Edit 2: I have opened up the Sega CD and I have located the gear that makes the tray open and close, but it seems to work fine. Can you circle the important parts of the photos in your previous post, please?

[Tokimemofan]

Are you asking me to make the drive open and close while the Sega CD is disassembled enough for me to see what's going on inside? I can only make the drive open and close when the Sega Genesis is sitting on top of the Sega CD, connected through the intended port there. How do I do what you are asking of me?

Edit: And what 'revision' are you talking about?

Edit 2: I have opened up the Sega CD and I have located the gear that makes the tray open and close, but it seems to work fine. Can you circle the important parts of the photos in your previous post, please?

1: Yes you need to watch and listen to it eject. You may need a buddy to hold the Genesis in place. If you have a Genesis 2 or can borrow one it will be easier to use that than the model 1.

2: Some units are different. It appears that some use a large black timing gear, mine doesn't so I can't help if yours is like that, but that link above describes the issue on that version.

3: look at the 3rd photo noticing how the spindle is tilted and sunken, that is what a jammed unit looks like when closed, It should rise to lift the CD and catch the magnet clamp.