Per the below specs, the servo might not have a full 180 deg operating range. Your 5v 200ma max power supply will probably not be adequate for the servo to do much.
Control System: +Pulse Width Control 1520usec Neutral
Required Pulse: 3-5 Volt Peak to Peak Square Wave
Operating Voltage: 4.8-6.0 Volts
Operating Temperature Range: -20 to +60 Degree C
Operating Speed (4.8V): 0.21sec/60 degrees at no load
Operating Speed (6.0V): 0.19sec/60 degrees at no load
Stall Torque (4.8V): 43 oz/in. (3.1kg.cm)
Stall Torque (6.0V): 56 oz/in. (4.0kg.cm)
Operating Angle: 45 Deg. one side pulse traveling 400usec
360 Modifiable: Yes
Direction: Counter Clockwise/Pulse Traveling 1520-1900usec
Current Drain (4.8V): 7.2mA/idle
Current Drain (6.0V): 8mA/idle
Motor Type: 3 Pole Ferrite
Potentiometer Drive: Indirect Drive
Bearing Type: Dual Ball Bearing
Gear Type: All Nylon Gears
Connector Wire Length: 12"
Dimensions: 1.6" x 0.8"x 1.4" (41 x 20 x 36mm)
Weight: 1.5oz. (43g)