ICE Games Frogger, Owner'S And Service Manual

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15
Game Repair
CAUTION
This game uses complex electronic components that are very sensitive to static electricity. Observe precau-
tions below before handling these electronics. Failure to do so may void the warranty and damage electronic
assemblies.
Before servicing electronics, turn off AC power to the game. Wait for capacitors to discharge.
DO NOT remove any of the components on the PCBA boards (e.g. compact flash and EPROMS) while the
game is powered on. This may cause permanent damage to the parts and the main board.
Before touching or handling electronic assemblies, discharge static electricity on your body. To discharge this
static, begin by connecting the line cord to a grounded outlet. Don’t turn on the game. Next, touch the safety
ground stud of the power supply chassis.
Store electronic assemblies in an anti-static area. Use anti-static bags to store or transport the game circuit
boards.
Don’t remove or connect electronic assemblies when cabinet power is on. Otherwise, you’ll damage electronic
assemblies and void the game’s warranty.
After you complete maintenance or service, replace all ground wires, shields, safety covers and install and
tighten ground and mounting screw. A bad connection to ground will result in sporadic operation of your game.
SERVICE: Theory of Operation and Repair
In the event your game is not functioning correctly please refer to the following few pages for infor-
mation on how the game functions and tests that you can perform. It is recommended that when you
determine that a board is found defective that a authorized warranty service center repair your
PCBA. Warranty requests will be voided if repairs are attempted by unauthorized personal.
Theory of Operation:
Upon power up the monitor will display a brief message informing you no signal is found and then
display the post screen of the PC. The PC will display on the monitor information about where it is
during the loading process. During the load process the game will check for the presences of the I/O
board and security hasp. Once loaded, the game will be in attract mode showing you game play and
you will hear attract audio if enabled. There are four boards located in the back of the game. The
main board is the Jamma I/O board with an additional circuit board added to increase its input and
output capabilities. The main I/O board handles the coin inputs, the test button, the service button,
volume control buttons, ticket notch lines, player start buttons, start lamp relay controls, coin meters,
ticket meters, and bottom podium lights. It also amplifies the audio.
A small USB display board drives the bonus display. There is a watchdog board that both listens for
a heartbeat from the PC and distributes power throughout the cabinet. The board has a few LEDs to
indicate correct power and function. LED2 labeled as D2 on the board will light when there is +5
volts of DC power. If not lit check the fuse at F1. It is a 2 amp fuse. LED3 labeled D3 on the board
will light when there is +12 volts of DC power. If not lit check the fuse labeled F2. It is a 5 amp fuse.
LED8 labeled D8 on the board will be on when the PC is on and running correctly. LED 5 labeled D5
should be off and will only light when the PC is reset for a watchdog occurrence. When the watch-
dog is first powered, LED7 labeled D7 will blink yellow a few times and then stay off while LED 6 la-
beled D6 on the board will flash green to indicate a heartbeat.
The display board during power up will display dancing line pattern lighting every segment until the
pc establishes communication with it. If communication is lost between the PC and display board the
display board will continue to show the last value sent.