CD32: How do you know if it is PAL or NTSC?

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Perhaps there's some diagnostic program one can run from floppy?

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Yeah amen to CLASS 1 LASER PRODUCT, the sticker is there for a reason. Value your eyes over any machine.
But a photodiode could be used to detect the beam.

I would also check if the rotation motor work (does it even have power?), that the sled motor that moves to the head to the right track can move and have power too etc..

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Also the light is supposedly "invisable" so instruments may be needed to see it.

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Does the CD32 complain if the CD-rom is unplugged?