I will assume that the ZDQ695 bulb replacement procedure is the same as that for the ZDQ695A. The ZDQ695 uses a 25 W appliance light bulb (300 C). Unplug the appliance before starting. Open the oven and remove the racks for space to work. Insert a flat blade screwdriver between the side of the oven and the glass cover above the bulb. With your hand support the cover and pry it away from the wall of the oven until it releases. Push the top of the cover towards the oven wall and use your fingers to pry the bottom of the cover away from the housing. Then remove the cover. Unscrew the old bulb (counterclockwise) and then remove the bulb. Then screw in the new bulb. Replace the glass cover (position the flange so that it is pointing to the back of the oven) by pushing it into the hole to cover the bulb assembly. Replace the shelves and close the oven door before plugging the oven back in.
Zanussi manuals are available here: http://www.zanussi.co.uk/en-gb/Support/Manuals/
. Enter the model number in the search box. Alternatively, the manual for the ZDQ695 is available here: http://kitchen.manualsonline.com/manuals/mfg/zanussi/zdq_695.html
. Click on the Get This Manual button.
I hope this helps.