Product specifications

14 M
IDWAY
A
MUSEMENT
G
AMES
, LLC
C
HAPTER
3 S
ERVICE
To service Wheel Driver Board Assembly, continued…
• Remove the wheel driver board assembly mounting screws. Lift the board out of the cabinet and set in
a safe place. Use anti-static bags and protective containers for storage if not reinstalled immediately.
• Perform the desired repair or equipment replacement.
• Be certain to reinstall the metal cover so that it seals against the metal cage.
To service the Main Boot, PIC or Sound ROM…
The ROM (Read Only Memory) circuits contain the computer operating instructions for the game. The
Main Boot ROM is located on the Mango PCB; the sound ROM is located on the Vegas SIO PCB; the PIC
chip is located on the Vegas SIO PCB.
Memory devices are especially sensitive to static charges. Use grounding precautions when handling
these parts.
• Switch off the power to the game machine and unplug the AC line cord.
• Unlock and remove the rear door.
• Remove the screws used to fasten the hinged, metal cage covering the desired PCB Assembly.
• Open the cover, which is hinged along the bottom edge, to expose the PCB assembly.
• Carefully note each IC position, and then remove using a chip extraction tool.
• To install memory circuits, orient a chip over the corresponding socket and press firmly to seat pins. Do
not force.
To service the Battery…
• Switch off the power to the game machine and unplug the AC line cord.
• Unlock and remove the rear door.
• Remove the screws used to fasten the hinged, metal cage covering the PCB Assembly.
• Open the cage, which is hinged along the bottom edge, to expose the PCB assembly.
• Locate the battery on the Vegas SIO Board assembly, and then remove using a chip extraction tool.
• To install a battery, orient a battery over the corresponding socket and press firmly to seat.
NOTE:
Do
not force; the battery is notched and will only fit in the socket one way.
To service an Auxiliary Board Assembly…
• Switch off the power to the game machine and unplug the AC line cord.
• Unlock and remove the rear door.
• Remove the screws used to fasten the hinged, metal cage covering the PCB Assembly.
• Open the cover, which is hinged along the bottom edge, to expose the PCB assembly.
• Carefully note the orientation of the cables. Extract the harness and other cables from the board connec-
tors.
• Remove the assembly mounting screws. Lift the board out of the cabinet and set in a safe place. Use
anti-static bags and protective containers for storage if not reinstalled immediately.
• Perform the desired repair or equipment replacement.
• Be certain to reinstall the metal cover so that it seals against the metal cage.
To service the Power Supply…
• Switch off the power to the game machine and unplug the AC line cord.
• Unlock and remove the rear cabinet door.
• Unplug the IEC AC connector from the rear of the supply and the DC connector from the front.
CAUTION
Discharge any static electricity built up in your body by touching the chassis for the power
supply. Do this BEFORE touching or handling the electronic assemblies