Thanks for the link to the video, it helped me greatly. I would just like to add that I have the Australian version of the 2004 Corolla Hatchback Auto. (ZZE 122R)
and it has a lever for the "fresh or recycled air" control instead of a button. Before removing the panel that houses the clock, the lever must be placed in
the mid position so that it doesn't snag on a small plastic retaining clip located behind and above the lever. I found out the hard way and sort of pulled it a bit too hard,
and the plastic tab was slightly damaged. It still works ok though.
The clock in my car is the LCD type, and the globe had blown. Just twist and turn to remove the globe holder from the clock, and pull out the globe.
I bought a replacement from Autobarn ($4 for two Narva globes. Hope they will be as long lasting as the Japanese ones). The globe is a "T5" type 1.2 watts.
The original globe had a green rubbery plastic sleeve which can be re-used on the new one. Don't try to pull the sleeve off from the top, instead "roll it back"
from the base of the globe (much like a condom!). And roll it on to the new globe.
When testing the new globe, turn on the ignition, as it doesn't come on with the parking lights. The clock light is on all the time while the ignition is on, not just at night.
Hope this helps.