Midway Gauntlet Dark Legacy, Operation Manual

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54 Midway Games West Inc.
Chapter 5 Wiring
VEGAS SOUND I/O BOARD ASSEMBLY LED INDICATOR STATUS CHART
Designation Location Function Color State Meaning
LED1 Near U11 SIO Board Green Off No boot ROM
Activity On SIO Board locked up
Blinking Power Fault
LED2 Near U34 Linking Green Off Not in use (no game linking)
Crystal Y1 Connector Status On Normal Linked Operation
Blinking Link Fault
LED3 Near the Jamma -5V Power Red Off No power
Connector indicator On Normal operation
Blinking Power fault
LED4 Near U35 & +12V Power Red Off No power
Connector P14 indicator On Normal operation
Blinking Power fault
LED5 Near +5V Power Red Off No power
Connector P23 indicator On Normal operation
Blinking Power fault
LED6 Near U34 & CPU Linking Red Off Not in use
Crystal Y1 Activity On CPU linking in progress
Blinking Normal operation
LED7 Near U34 & Linking Data Red Off Not in use (no game linking)
Crystal Y1 On Sending data
Blinking Normal operation
LED8 Near U14 & Audio Activity Yellow Off No sound boot ROM
Crystal Y1 On Locked up
Blinking Normal operation
LED9 Near U34 & Linking Yellow Off Not in use (no game linking)
Crystal Y1 Receiving data On Receiving data
Blinking Normal operation
LED10 Near U44 & Audio activity Green Off Not in use (no audio data)
Crystal Y2 On Receiving data
Blinking Normal operation
LED11 Near U44 & None Red Off Not in use (normal)
Crystal Y2 On Circuit fault
Blinking Circuit fault
LED12 Near U44 & Interrupt activity Yellow Off Not in use (no interrupts)
Crystal Y2 On Receiving data
Blinking Normal operation
LED13 Near U44 & Disk Activity Yellow Off Not in use
Crystal Y2 On Processing data
Blinking Normal operation