System Shutdown; Voltage Related System Shutdown; Temperature Related System Shutdown - IBM Netfinity 4500R Type 8656 Hardware Maintenance Manual

System shutdown

Voltage related system shutdown

Temperature related system shutdown

Message
12V "X" bus fault
critical; overcurrent condition on
12 volt "X" voltage bus)
5V fault (level-
critical; overcurrent condition on 5
V subsystem)
240 VA fault (level-critical;
overcurrent or overvoltage
condition in power subsystem)
Refer to the following tables when experiencing system shutdown related to voltage
or temperature problems.
Message
System shutoff due to "X"
current over max value
(level-critical; system drawing too
much current on voltage "X" bus)
System shutoff due to "X"
current under min value
(level-critical; current on voltage
bus "X" under minimum value)
System shutoff due to "X" V over
(level-critical;
voltage
system shutoff due to "X" supply
over voltage)
System shutoff due to "X" V
under voltage
critical system shutoff due to "X"
supply under voltage)
System shutoff due to VRM "X"
over voltage
Message
System shutoff due to board over
temperature
critical; board is over temperature)
(level- 1. Check for short circuit on 12 volt "X" voltage bus
2. See "Power checkout" on page 26.
1. Check for short circuit on 5 v bus
2. See"Power checkout" on page 26.
1. See "Power checkout" on page 26.
1. See "Power checkout" on page 26.
1. See "Power checkout" on page 26.
1. Check power supply connectors
2. Replace power supply
3. Replace power backplane
1. Check power supply connectors
(level-
2. Replace power supply
3. Replace power backplane
1.
Replace power supply
2. Replace power supply backplane
1. Ensure system is being properly cooled, see
(level- "Temperature checkout" on page 27.
2. Replace board
Action
Action
Action
Symptom-to-FRU index
131