IBM iSeries Series Hardware Problem Analysis And Isolation page 52

v No: Inform the customer that the ac voltage at the power outlet is not correct and reconnect the
mainline ac power cables to the power outlet when the ac voltage at the power outlet is correct.
This ends the procedure.
11. Perform the following:
a. Power off the system.
b. Disconnect the power cable.
c. Exchange the following parts in the system unit, one at time. After exchanging a part, reconnect
the mainline ac power cables to the power outlet and attempt to power on the system. If the
system powers on, the FRU you exchanged is the failing item. If the system does not power on,
exchange the next part in the list. If the system does not power on after exchanging all the
FRUs in the list, ask your next level of support for assistance.
v System unit control panel card and cables (see symbolic FRU "CTLPNL" on page 323).
v SPCN card (see symbolic FRU "TWRCARD" on page 470).
v Power supply (see symbolic FRU "PWRSPLY" on page 431).
This ends the procedure.
12. Display the selected IPL mode on the system unit control panel (see iSeries Service Functions
occurred?
). Is the selected mode the same mode the customer was using when the power-on failure
v No: Go to step 14 (See page 40).
v Yes: Continue with the next step.
13. Perform the following:
a. Power off the system.
b. Select the mode on the system unit control panel the customer was using when the power-on
failure occurred.
c. Attempt to power on the system.
Does the system power on?
v Yes: Go to step 15 (See page 40).
This ends the procedure..
v No: Exchange the system unit control panel card. (See Remove and replace procedures).
This ends the procedure.
14. Is a function 11 SRC displayed on the system unit control panel?
v Yes: Go to "Starting point for all problems" on page 2.
This ends the procedure.
v No: Continue with the next step.
15. Continue the IPL. Does the IPL complete successfully?
v Yes: This ends the procedure.
v No: Go to "Starting point for all problems" on page 2.
This ends the procedure.
16. Perform the following to bypass the uninterruptible power supply unit:
a. Power down your system and the uninterruptible power supply unit.
b. Remove the 9-pin D-shell signal cable (p/n 17G1768) used between the uninterruptible power
supply and the system.
c. Remove the power jumper cords used between the uninterruptible power supply and the
attached devices.
d. Remove the country or region specific power cord used from the uninterruptible power supply
to the wall outlet.
e. Use the correct power cord (that is, use the original country or region specific power cord
shipped with your system and connect it to the power inlet on the system).
40
iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and Isolation