Stern METALLICA LE & PREMIUM models pinball machine Magnet Processor board.
Stern Service Bulletin #182
Subject: Metallica LE and Premium machines. New firmware for the magnet processor board along with software version V1.22 or higher optimizes the hammer/magnet feature.
Symptoms: False hammer strikes. Or the magnet will grab and hold the ball for a brief moment and release it without the hammer and disappearing ball mechanism activating.
Please note. Games manufactured with serial number # 242584 or higher will have the new magnet processor board.
Instructions for Replacing Magnet Processor Board:
1.Locate the magnet processor board located under the playﬁeld. (See picture below).
2.Unplug the (3) pin and (12) pin connectors from the magnet processor board.
3.Remove the (4) ¼” Hex head screws securing the magnet processor board and take the board of of the playﬁeld.
4.Install the new magnet processor board in place of the old board using the (4) screws mentioned in step (3).
5.Reconnect the (3) pin and (12) connectors to the magnet processor board.
Service Bulletin 182