IBM iSeries 820 Hardware Problem Analysis And Isolation

42. Perform the following:
a. Check the uninterruptible power supply breakers to ensure that they are in the On position.
b. Check the battery connectors to ensure that they are seated
c. Check the transformer connector to ensure that it is seated correctly.
d. Use a multimeter to measure the ac voltage at the internal uninterruptible power supply outlets to
the power supplies.
Is the ac voltage from 200 V ac to 240 V ac?
v Yes: Continue with the next step.
v No: Exchange the following parts one at a time (see Type, model, and part number list for part
numbers).
– Uninterruptible power supply battery unit - part 04N5379 (minimum voltage 12.5V each)
– Uninterruptible power supply base unit
– Uninterruptible power supply unit signal cable SIG7 - part 44H8027
– Uninterruptible power supply transformer unit - part 44H7786
Continue
with the next step.
43.
Perform the following:
a. Disconnect the mainline ac power cable from the customer’s ac power outlet.
b. Exchange one of the following FRUs:
v SPCN card (see symbolic FRU “TWRCARD” on page 470)
v Power supply (see symbolic FRU “PWRSPLY” on page 431)
v System unit card enclosure
c.
Reconnect the mainline ac power cables to the power outlet.
d. Attempt to power on the system.
e. If the system powers on, the FRU you exchanged is a failing item. If the system does not power
on, repeat steps 43a (See page 53) through 43e (See page 53) and exchange the next FRU in
the list.
f. If the system does not power on after exchanging all the FRUs in the list, ask your next level of
support for assistance.
This ends the procedure.
44.
Is there an SRC displayed on the control panel for the frame that does not power on?
v Yes: Continue with the next step.
v No: Replace the SPCN card (see symbolic FRU “TWRCARD” on page 470).
This
ends the procedure.
45.
Is the SRC 1xxx xx2E?
v Yes: Continue with the next step.
v No: Go to “Starting point for all problems” on page 2.
46.
Do SPCN optical cables A connect the failing frame B to the preceding frame in the string?
.---------. (A) SPCN
| System | Optical Cables -. .----- SPCN
| Unit | | V Optical
| J15 | .-. V .-. Adapter
’----.----’ | +------------+ |
| | +------------+ |
.----’----. .-------’-+ .-------’-+ .---------.
| J15 | | J16| | J15| | |
|Frame J16+-+J15 Frame| |Frame J16+-+J15 Frame|
| 1 | | 2 | | 3 | | 4 |
’---------’ ’---------’ ’---------’ ’---------’
^
’---- (B) Failing Frame
Analyze hardware problems 53

IBM iSeries 820 Specifications

General

Brand	IBM
Model	iSeries 820
Category	Server
Language	English