Sega TETRIS GIANT Owner's Manual page 127

118
REPLACING THE BUTTON SWITCHES
6
Remove the nut and supporter at the base of the button and take off the button.
BUTTON
7
Refer to Steps 1 to 5 and work in reverse order to assemble the left/right buttons on the joystick. Be careful
with the direction of the joystick ball when attaching it.
13
CONNECTOR
SM4P (black)
R SIDE
RIGHT BUTTON
8
To replace the left and right buttons on the 2P joystick, refer to Steps 1 to 7 and replace them in the same
way.
SUPPORTER NUT
Cross-section Drawing of Joystick Ball
Attach the left and
right buttons on the
joystick so that they
are towards the front.
NOTE: The button is not in the center of the joystick
ball, so place the button below the center as
shown in the figure, and attach it so that the
letters on the button can be read.
CONNECTOR
SM4P (white)
L SIDE
LEFT BUTTON
The switch connectors should point towards the inside.