Philips WACS700 Upgrade Manual page 7

Figure 7, showing the CD drive (top) and hard disk drive (underneath). Although this picture was actually taken with the hard drive removed, my mistake!!
Remove the 4 screws (circled), and the two springs (ovals). The springs are very tricky to remove and should be removed with care to avoid damage to the circuit board on the
right. Carefully lift the CD/hard disk combination unit off it's pegs (4). The underside of the CD/hard drive has two ribbon cables running from a circuit board between the two to
the circuit board on the right hand side. It is not advisable to disturb these ribbon cables, to reseat them requires splitting the CD unit from the hard drive unit and removing the
bottom assembly. Proceed at your peril.
Rotate the CD/hard drive unit carefully as arrowed above.