IBM iSeries 820 Hardware Problem Analysis And Isolation

v No: Exchange the power control compartment, AC module, or SPCN card (BKSPCN or
TWRCARD) in the frame from which you removed the SPCN optical adapter.
Note: See the Remove and replace procedures topic, or the FC 504x Problem Analysis and Repair
and Parts information (SY44-4934-00), or the Migrated Expansion Tower Problem Analysis, Repair
and Parts manual on the V5R1 Supplemental Manuals web site , depending on the secondary
frame you are working on.
This ends the procedure.
v Yes: Exchange the following FRUs, one at a time.
Note: See the Remove and replace procedures topic, or the FC 504x Problem Analysis and Repair
and Parts information (SY44-4934-00), or the Migrated Expansion Tower Problem Analysis, Repair
and Parts manual on the V5R1 Supplemental Manuals web site , depending on the secondary
frame you are working on.
– PCC in the failing frame (first frame with a failure indication).
– PCC, AC module, or SPCN card (BKSPCN or TWRCARD) in the preceding frame in the string.
– SPCN optical adapter A in the preceding frame in the string.
– SPCN optical adapter B in the failing frame.
– SPCN optical cables C between the preceding frame in the string and the failing frame.
(A) SPCN
Optical .----- (C) SPCN
adapter ----. | Optical cables
| |
| | .--- (B) SPCN
.---------. | | | Optical
| System | | | | adapter
| Unit | V | V
| J15 | .-. V .-.
’----.----’ | +------------+ |
| | +------------+ |
.----’----. .-------’-+ .-------’-+ .---------.
| J15 | | J16| | J15| | |
|Frame J16+-+J15 Frame| |Frame J16+-+J15 Frame|
| 1 | | 2 | | 3 | | 4 |
’---------’ ’---------’ ’---------’ ’---------’
^
|
|
’---Failing frame
This ends the procedure.
20.
Perform the following:
a. Power off the system.
b. Disconnect the SPCN frame-to-frame cable from J15 on the PCC of the first secondary frame that
cannot become powered on.
c. Connect the negative lead of a multimeter to the system frame ground.
d. Connect the positive lead of the multimeter to pin 2 of the SPCN cable.
Note: Use an insulated probe or jumper when performing the voltage readings.
e. Note the voltage reading on pin 2.
f. Move the positive lead of the multimeter to pin 3 of the SPCN cable.
48 iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and Isolation

IBM iSeries 820 Specifications

General

Brand	IBM
Model	iSeries 820
Category	Server
Language	English