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
General Maintenance and Troubleshooting
4.1 Analyzer Status Indicators
Maxum edition II Analyzer General Maintenance
Manual, August 2018, A5E42019842001 23
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