Sega MINI DELUXE THE HOUSE OF THE DEAD 4 Service Manual page 52

Aim and fire at the mark to the lower right. The mark to the lower right will disappear, and the same mark
will be displayed in the center.
(Press the TEST Button to return to the Gun Calibration Setting screen.)
PLAYER1 GUN ADJUSTMENT
↑PLEASE SHOOT GRID WITH PLAYER1 GUN
Aim and fire at the mark in the center.
PLAYER1 GUN ADJUSTMENT
"NOW CALCULATING" will be displayed in the center. The screen will automatically switch to the following.
50
PRESS TEST TO EXIT
NOW CALCULATING