What happens when you bump the cdrom2 while playing CD audio?

[gtsamour]

I bought an IFU-30 with a white PCE inside. The cdrom2 unit was missing so I found a damaged one a while later and I managed to repair it getting some new spare parts.

The repair involved complete recap, new laser lens, a new gear (the known to crumble one), and some cosmetic stuff (cleaning and whitening using retrobright).

So, the whole IFU-30 with it's cdrom2 and pce seems to work fine.

One thing I noticed is that if you even gently bump the unit while its playing CD audio (a gentle bumb on the table the unit is sitting on for example) causes the cd audio to stop. You can continue to play the game normally its just the cd audio that mutes although the cd keeps spinning as if it is still playing cd audio. If you continue playing the game and you reach a point that the game starts playing an audio track, the cd audio starts normally again.

Is that normal for the cdrom2 unit? I would expect of course a momentary pause if a bump occurs but shouldn't it still continue playing the cd audio?

ps
The whole thing has been recaped (cdrom2, pce, ifu-30 unit).

[Necromancer]

I believe that's normal.  It won't reseek until the game tells it to.

[jperryss]

That's happened to me on two Duos and a CDROM2, and the music always starts back up the next time it needs to load an audio track.

It seems to happen way more often on the CDROM2.

[Vimtoman]

Yep happens on mine.
Tracks should start next time they are loaded.

[gtsamour]

Thank you guys, I was beginning to think there's something wrong with mine

[crazydean]

I have a Duo and this problem seems to be exacerbated when using CD-Rs. I found that changing the speed at which I burn the discs has all but eliminated the problem.

[Vimtoman]

I'm not sure how true that is as I have burnt 74min at x4 and had problems were 80min at x24 have not.
I think it's finding a happy medium with some machines.

[blueraven]

This is normal. At least, from my own experiences.

[wilykat]

CD players with anti-skip technology relied on RAM chip to buffer several seconds ahead so it could keep playing while the laser tried to re-orient itself back to original track to play without a skip.

Those were added as standard long after the CD-ROM drive was released and I don't think Duo has anti-skip technology added.

Speaking of anti-skip, anyone remember this early commercial for portable CD player?  A generic brand one, drop a feather and the music spazzes out. On the new CD player, they dropped the whole chicken on it and it didn't skip a beat.

[thesteve]

on these its actually somewhat a trick question
if its playing an audio cd it runs the chipset in audio mode, where it understands how to recover from a skip/bump, but when running a game the chipset is running in raw data mode, where it doesnt understand the data being read, so the data is interpreted elsewhere, and error recovery isnt available