Specifications

SQ: 6-17
RS3: Service Quick Reference Guide
ControlFiles
RAM NV Memory LEDs and Test Points (continued)
LED Meaning and Response
+5 VDC BAD
(DS3)
Replace Fuse F1.
CARD BAD
(DS2)
Enable/Disable s witch i s set at DISABLE
or the card failed power -up diagnostics.
CARD GOOD
(DS1)
Card passed power-up diagnostics.
Test Point Function
Brown Ground Return
Yellow +5 VDC
Green Voltage of Battery #2
White Voltage of Battery #1
NV RAM LED Sequence
Yellow LED Pattern
Fault Condition:
Red “Card Bad” LED ON Green LED OFF
OFF
OFF
OFF
0 MC68000 Microprocessor test
OFF
OFF
ON
1 EPROM checksum test
OFF
ON
OFF
2 Program & Dual Port ROM test
OFF
ON
ON
3 Watchdog Timeout test
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