Fanuc Power Mate i-D/H Operation Maintenance Handbook

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7.5.5 FANUC I/O linkII board
D Specification
Name
Printed–circuit board specification
FANUC I/O LinkII board A20B–8100–0310
D Connector and LED locations
ROM for
communication
control
Connector for
backpanel
connection,
JNA
LED A
LED 2
Connector
terminal
board for
I/O Link–II,
TBA
Name Color Meaning Required action
LED A Red A RAM parity alarm
occured.
Replace the printedcircuit board
though the alarm can sometimes
be released by turning the power
off then on.
LED 2 Green Lights when commu-
nication is performed
normally.
Does not light before
communication be-
gins and after a
communication
alarm condition has
occurred.
If this LED is kept off:
1) Check the I/O LinkII cable.
2) Check the connector terminal
board TBA.
3) Check the master unit status.
4) Replace the printed–circuit
board.

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