Exit the chamber and ascend the staircase to the top of the chamber. You'll notice some strange material surrounding this chamber; perhaps it's the shield you have read about in Saavedro's journal. Walk toward the catwalk, and Saavedro greets you. After a brief, disturbing conversation, Saavedro leaves.
Search the area and locate a lever. Pull the lever; this switches on the chamber's power system. You'll find the consoles inside now operate correctly! Go back down the stairs and into the Narayan start position.
Once back inside the Narayan chamber, locate the two consoles. Notice the switch between the consoles. The switch diverts the power to one of the two consoles. To send power to the left console, move the switch to the left; to send power to the right console, move the switch to the right. For now, move the switch to the left so the left console receives power.
Click on the left console to open its casing. Inside you will find several curved lines, which seem to form various circles. Experimentation shows you that the lines have an on and off state. Click one of the curved lines, and it glows. Click the curved line again, and it turns off.
You may notice that the curved lines somewhat resemble the symbols on the tapestries. Upon closer examination, the curved lines also somewhat resemble the symbols that you collected through the Amateria, Edanna, and Voltaic ages! The key to solving this console puzzle lies in Atrus' journal, given to you at the very beginning of the game!
Read the journal carefully, and you will notice that certain words match the words on the tapestries. To make matters much easier, the words in Atrus' journal are written in bold! Atrus describes the important elements to age creation, and he summarizes these with bold phrases. The following are the four phrases:
1. Dynamic forces spur change. (This represents the Amateria age)
2. Nature encourages mutual dependence. (This represents the Edanna age)
3. Energy powers future motion. (This represents the Voltaic age)
4. Balanced systems stimulate civilization. (This represents the Narayan age)
These four phrases make up the codes for the consoles. But how do the words translate into symbols? Careful examination of the tapestries reveals that these words appear on the tapestries (except for some from the Narayan phrase...don't worry about that phrase just yet).
So, you have figured out the phrase and the symbol representing each word, but how do you know the order in which the symbols are put into the console. Does the first word appear at the top or the bottom? The key to deciphering the order of symbols lies in the symbol sketches you collected! Look carefully, and you will notice the symbol for Amateria contains lines that make up the words in the phrase.
You can enter the symbols into the console in any order. For instance, you can put the Amateria symbol in first, middle or last; the same goes for the Edanna or the Voltaic phrase. Don't worry about the Narayan phrase yet.
Here are the screenshots for the completed symbols:
 Here's the completed symbol for the Amateria age, or "Dynamic forces spur change. |  Here's the completed symbol for the Edanna age, or "Nature encourages mutual dependence. |  Here's the completed symbol for the Voltaic age, or "Energy powers future motion. |
Completing the three codes lowers the shield over the nearby doorway.