Yamaha PASC4 Owner's Manual page 91

Battery bottom
Battery lock
Battery
bottom
Top of
the case
TIP
Battery Pack mounting method (External Crossover Bat-
tery)
Top of the case
Insert the Battery Pack in the direction of the arrow so
that the battery bottom is aligned to the top of the case.
Press the upper part of the Battery Pack toward the
frame until it clicks into place to secure it.
Battery lock
87