HVPS cooling fan service check
Action Yes No
Step 1
Ensure the HVPS cooling fan cable is properly connected.
Is the above connection properly connected?
Go to step 2. Reseat the connection.
Step 2
Reset the machine.
Does the error continue?
Replace the HVPS fan
with cable.
Go to step 3.
Problem resolved.
Step 3
Reset the machine.
Does the error continue?
Replace the controller
board. See “Controller
board removal” on
page 349.
Problem resolved.
Miscellaneous cooling fan service check
Action Yes No
Step 1
Ensure the miscellaneous cooling fan cable is properly connected.
Is the above connection properly connected?
Go to step 2. Reseat the connection.
Step 2
Reset the machine.
Does the error continue?
Replace the HVPS fan
with cable.
Go to step 3.
Problem resolved.
Step 3
Reset the machine.
Does the error continue?
Replace the controller
board. See “Controller
board removal” on
page 349.
Problem resolved.
Firmware and/or system electronics errors (900-999.99)
• “9xx error messages” on page 114
• “System software error service check” on page 117
• “NVRAM mismatch failure service check” on page 122
4063
Diagnostic information
113
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