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B4xx
Reference Code
Description/Action
Perform all actions before exchanging Failing Items
4491
RIO Port 1 or the RIO cable connected to it is faulty.
Probability is high.
4492
RIO Port 2 or the RIO cable connected to it is faulty.
Probability is high.
4493
RIO Port 3 or the RIO cable connected to it is faulty.
Probability is high.
44A0
A RIO Port or the RIO cable connected to it is faulty.
Probability is high.
Note: Before replacing all the RIO cables for this
reference code, contact your second level of support.
44AF
RIO Port 0 or the RIO cable connected to it is faulty.
Probability is high.
308
Service Guide
Failing Item
1. Check the RIO cable connectors
for damage. Ensure that the cable
connections to the RIO ports are
tight.
2. RIO Cable on RIO port 1.
Location: U1.1-P1-X1/Q2
3. I/O hub card
Location: U1.1-P1-X1
1. Check the RIO cable connectors
for damage. Ensure that the cable
connections to the RIO ports are
tight.
2. RIO Cable on RIO port 2.
Location: U1.1-P1-X1/Q3
3. I/O hub card
Location: U1.1-P1-X1
1. Check the RIO cable connectors
for damage. Ensure that the cable
connections to the RIO ports are
tight.
2. RIO Cable on RIO port 3.
Location: U1.1-P1-X1/Q4
3. I/O hub card
Location: U1.1-P1-X1
1. Check the RIO cable connectors
for damage. Ensure that the cable
connections to the RIO ports are
tight.
2. Replace the RIO Cables.
Location: U1.1-P1-X1/Q1, Q2, Q3,
Q4
3. I/O hub card
Location: U1.1-P1-X1
1. Check the RIO cable connectors
for damage. Ensure that the cable
connections to the RIO ports are
tight.
2. RIO Cable on RIO port 0.
Location: U1.1-P1-X1/Q1
3. I/O hub card
Location: U1.1-P1-X1
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