Toshiba T1200XE PSU repair. Identifying some SMD component 222/22Y
This site says 22Y is a 22 volt Zener diode, and here's a datasheet that includes 22 volt Zeners having marking codes of 22, 22X, 22Y, and 22Z.
Trace the circuit around the device. If only 2 of the 3 pins are connected, or 2 of them are joined together, then it is almost certainly a diode of some type.
BTW it looks like several devices on the other side of the board (power transistors?) have 'dry' (cracked) solder joints, eg. the flat pins to the left and above the circle.