Star Tech Journal

STAR . . ·TECH JOURNAL
OCTOBER
1 998
ATARI SF RusH OR SF RusH THE RocK
MOTOR DRIVE BOARD
IDENTIFYING THE Qp AMPS
John Liikala
Canadian Amusements
Burnaby, BC, Canada
PROBLEM
What OPA541AP amplifier on the motor
drive board drives the motor which way?
SOLUTION
QI (OPA541AP) drives the motor to steer
right (+Mo=Mout+Black Wire).
Q2 (OPA541AP) drives the motor to steer
left (-Mo=Mout+Red Wire).
See motor assembly A-21442 this page for
component location. See diagram next page
for cabinet wiring and for location of motor
·wiring from LMA PCB.
MOTOR BOARD ASSEMBLY
A-21442