Power problems
v
Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See Chapter 3, “Parts listing,” on page 59 to determine which components are customer replaceable units
(CRU) and which components are field replaceable units (FRU).
v
If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Symptom Action
The power-control button does
not work (the system-board tray
does not start).
1. Make sure that the operator panel power-control button is working correctly:
a. Disconnect the chassis power cord.
b. Reconnect the power cord.
c. Press the power-control button.
2. Make sure that:
v
The power cord is fully seated in the power supply inlet and connected to a
working electrical outlet and that the power supply fan is working.
v
The system-board tray contains the correct type of DIMMs.
v
The DIMMs are correctly seated.
v
The microprocessor is correctly installed.
3. Reseat the following components:
a. DIMMs
b. Power-supply cables to all internal components
c. Power
supply
4. Replace the following components one at a time, in the order shown, restarting
the system-board tray each time:
a. DIMMs
b. Power
supply
5. If you just installed an optional device, remove it, and restart the system-board
tray. If the system-board tray now starts, you might have installed more devices
than the power supply supports.
6. See “Solving undetermined problems” on page 57.
The system-board tray does not
turn off.
1. Determine whether you are using an Advanced Configuration and Power
Interface (ACPI) or a non-ACPI operating system. If you are using a non-ACPI
operating system, complete the following steps:
a. Press
Ctrl+Alt+Delete.
b. Turn off the system-board tray by holding the power-control button for 5
seconds.
c. Restart the system-board tray.
d. If the system-board tray fails POST and the power-control button does not
work, disconnect the ac power cord for 20 seconds; then, reconnect the ac
power cord and restart the system-board tray.
2. (Trained service technician only) If the problem remains or if you are using an
ACPI-aware operating system, suspect the system board.
The system-board tray
unexpectedly shuts down, and
the LEDs on the operator panel
are not lit.
See “Solving undetermined problems” on page 57.
28
System x iDataPlex dx340 Types 6385, 6386, 6389, 7831, 7832, and 7834: Problem Determination and Service Guide
