My guess is that a repair would involve replacement of the whole transport mechanism anyway, since they're usually pretty inexpensive ($30-$40) and would be very fiddly to fix. That said it might be worth making sure you can source a replacement mechanism for the player by contacting Arcam, or by taking off the lid and noting the number of the mechanism (I think Arcam uses Sony) and then going to an electronics parts store such as MCM electronics.
Then use it until it fails and have the whole transport replaced (a relatively simple job for a technician).
A stopgap would be to take the lid off and make sure that there is no dirt or hairs caught in the motors or the gears that position the lens and spin the disc, and then make sure any gears (there's usually a helical gear for positioning the lens) are lubricated with an appropriate lubricant.
Then use it until it fails and have the whole transport replaced (a relatively simple job for a technician).
A stopgap would be to take the lid off and make sure that there is no dirt or hairs caught in the motors or the gears that position the lens and spin the disc, and then make sure any gears (there's usually a helical gear for positioning the lens) are lubricated with an appropriate lubricant.