Power LEDs
Located at the back of the board near the RJ 45 connector
Description
Color and Meaning
Power
Green – 3.3V power is available. Should be on at all times
Power Bad
Red – Power is faulty or SYSCON hardware reset switch is being pressed
CAC Conn Bad
Red – Connection from the SIB3 to the CAC3 is faulty or incomplete. After power up, this
LED should turn off once CAC3 to SIB3 connection is completely initialized.
I
2
C Bus LEDs, Buses A and B
Located next to I
2
C Bus connectors
Description
Color and Meaning
LED2/5 Norm/Comm
Dim Green – I
2
C Bus is normal
Bright Green - I
2
C Bus is communicating
LED3/6 Warning
Yellow – Warning on the I
2
C Bus
LED4/7 Fault
Red –I
2
C Bus fault
I
2
C Bus Pullup-Active LEDs
Located next to battery holder
Description
Color and Meaning
LED19, 20
The Auto-pullup feature is supplying pullup current on the I
2
C Bus.
Can Bridge LEDs
Located to the left of the far left PCI slot
Description
Color and Meaning
LED16 Ready/Comm
Dim Green – Can Bridge is normal
Bright Green – Can Bridge is communicating
LED17 Warning
Yellow – Warning on the Can Bridge
LED15 Fault
Red – Can Bridge fault
Can I/O LEDs
Located next to far left CAN direct connector, CAN direct 5
Description
Color and Meaning
LED8 TX
Green – On when a valid CAN I/O message (other than a heartbeat reply) has been received
and queued for processing
LED9 RX
Green – On when a CAN message (other than a heartbeat transmission) has been queued
for sending to the CAN hardware
Electronic Compartment Component Descriptions and Maintenance Procedures
2.3 System Controller Version 2.1 (SYSCON2.1)
Maxum II Reference Manual
38
Manual, 7/2017, 2000596-001
