IBM iSeries Series Hardware Problem Analysis And Isolation page 46

11. 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).
Note: Plug the other end of this cord into a compatible wall outlet.
f. Attempt to power on the system.
Does the system power on?
v Yes: Continue with the next step.
v No: Go to step 4 (See page 32).
12. Display the selected IPL mode on the system unit control panel (see iSeries Service Functions
Is the selected mode the same mode the customer was using when the power-on failure occurred?
v No: Go to step 14 (See page 34).
v Yes: Continue with the next step.
13. Is a function 11 SRC displayed on the system unit control panel?
v No: Go to step 15 (See page 34).
v Yes: Go to "Starting point for all problems" on page 2.
This ends the procedure.
14. 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: Continue with the next step.
v No: Exchange the system unit control panel card. See Remove and replace procedures.
This ends the procedure.
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.
Instructions for Models 830, 840, SB2, and SB3
1. Attempt to power on the system. See Power on/off the system and logical partitions. Does the system
power on?
v No: Continue with the next step.
v Yes: Go to step 11 (See page 37).
2. Are there any characters displayed on the control panel? (A scrolling dot may be visible as a
character.)
v No: Continue with the next step.
v Yes: Go to step 10 (See page 36).
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iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and Isolation
).