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Factory Settings Restored.
This message indicates that the CMOS RAM no longer retains any custom Pricing or
Game Adjustment settings and has reverted to factory default settings. Generally. the following
CPU checks w1l1isolate the cause of the CMOS RAMmemory failure. The voltage at pin 2a and
pin 26 of ua should be +5V (game turned On) and at least +4V (game turned Om. When the
voltage drops below +4V. memory reset occurs. Check the batteries and battery holder. Be sure
that the batteries are good and that there is no contamination on the battery holder terminals.
Turn the game OFF. and use an ohmmeter to check diodes 01 and 02 on the CPU Board. 01
should read 0 ohms when forward-biased and infinite ohms when reverse-biased.
02 should
read 15 ohms when forward-biased and infinite ohms when reverse-biased.
U6 Checksum Error.
The game ROMchecksum is invalid. If this occurs replace the game ROM.
Time and Date Not Set.
The real time clock is not running. If this occurs go to U.4 of the Utilities Menu and set
the time and date.
CPUL.E.D.s
The CPU has three L.E.O.s located on the upper left side of the board D19. 020. and 021.
On game power-up 019 and 021 turn On for a moment then. 01:9 turns Off and 020 starts to
blink rapidly. 021 remains On. The system has detected a problem if the following happens:
CPU
Board L.E.D. Error Codes
020 blinks one time -
020 blinks two times -
D20 blinks three tlmes -
ROMErrorU6
RAMError ua
Custom Chip Failure U9
SOundBoard Beep Error Codes
Upon Game Tum-On:
1Beep
=
Sound Board O.K.
2 Beeps
=
Sound RAMFailure
3 Beeps
=
uis
Failure
4 Beeps
=
U15 Failure
5 Beeps
=
U14 Failure (Ifused)
Hurricane 1-37