IBM 887022X Maintenance Manual - Page 219

connected.

Page 219 highlights

Note: See Chapter 8, "Parts listing, Type 8870," on page 249 to determine which components are replaceable by the customer, and which components should be replaced by an IBM field service technician. Service Processor message FRU/action Upper CEC + 3.3V Fault 1. Follow the Light Path to determine the failing component. 2. Verify that the system power present indicator is ON (see "Center plane connectors, jumpers and LEDs" on page 159). 3. If the system power present indicator is OFF: a. Power backplane b. Power supplies 4. VRM J44 on upper SMP Module. 5. Upper SMP Module. Upper CEC +1.8 Fault 1. If VRM indicator on Light Path card is ON, replace failing microprocessor VRM. 2. Verify that the system power present indicator is ON (see "Center plane connectors, jumpers and LEDs" on page 159). 3. If the system power present indicator is OFF: a. Power backplane b. Power supplies 4. Microprocessor VRM. 5. Microprocessor. 6. Upper SMP Module. Upper CEC +2.5V Fault 1. Verify that the system power present indicator is ON (see "Center plane connectors, jumpers and LEDs" on page 159). 2. If the system power present indicator is OFF: a. Power backplane b. Power supplies 3. VRM J28 on upper SMP Module. 4. Upper SMP Board. Upper CEC Machine Check: xxx 1. Refer to previous log entries. 2. Examine the Light Path indicators to determine if the error was caused by a microprocessor or a DIMM. 3. Verify that all scalability cables are firmly attached. 4. Run diagnostic programs. 5. Replace component indicated by Light Path indicators. 6. Scalability cables. 7. Upper SMP Module. Upper CEC Port 0 Power Fault 1. Verify that the scalability cables are firmly connected. 2. Run diagnostic programs. 3. Scalability cables. 4. Upper SMP Module. 5. Lower SMP Module. Upper CEC Port 1 Power Fault 1. Verify that the scalability cables are firmly connected. 2. Run diagnostic programs. 3. Scalability cables. 4. Upper SMP Module. 5. Lower SMP Module. Chapter 7. Symptom-to-FRU index 209

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Note:
See
Chapter
8,
“Parts
listing,
Type
8870,”
on
page
249
to
determine
which
components
are
replaceable
by
the
customer,
and
which
components
should
be
replaced
by
an
IBM
field
service
technician.
Service
Processor
message
FRU/action
Upper
CEC
+
3.3V
Fault
1.
Follow
the
Light
Path
to
determine
the
failing
component.
2.
Verify
that
the
system
power
present
indicator
is
ON
(see
“Center
plane
connectors,
jumpers
and
LEDs”
on
page
159).
3.
If
the
system
power
present
indicator
is
OFF:
a.
Power
backplane
b.
Power
supplies
4.
VRM
J44
on
upper
SMP
Module.
5.
Upper
SMP
Module.
Upper
CEC
+1.8
Fault
1.
If
VRM
indicator
on
Light
Path
card
is
ON,
replace
failing
microprocessor
VRM.
2.
Verify
that
the
system
power
present
indicator
is
ON
(see
“Center
plane
connectors,
jumpers
and
LEDs”
on
page
159).
3.
If
the
system
power
present
indicator
is
OFF:
a.
Power
backplane
b.
Power
supplies
4.
Microprocessor
VRM.
5.
Microprocessor.
6.
Upper
SMP
Module.
Upper
CEC
+2.5V
Fault
1.
Verify
that
the
system
power
present
indicator
is
ON
(see
“Center
plane
connectors,
jumpers
and
LEDs”
on
page
159).
2.
If
the
system
power
present
indicator
is
OFF:
a.
Power
backplane
b.
Power
supplies
3.
VRM
J28
on
upper
SMP
Module.
4.
Upper
SMP
Board.
Upper
CEC
Machine
Check:
xxx
1.
Refer
to
previous
log
entries.
2.
Examine
the
Light
Path
indicators
to
determine
if
the
error
was
caused
by
a
microprocessor
or
a
DIMM.
3.
Verify
that
all
scalability
cables
are
firmly
attached.
4.
Run
diagnostic
programs.
5.
Replace
component
indicated
by
Light
Path
indicators.
6.
Scalability
cables.
7.
Upper
SMP
Module.
Upper
CEC
Port
0
Power
Fault
1.
Verify
that
the
scalability
cables
are
firmly
connected.
2.
Run
diagnostic
programs.
3.
Scalability
cables.
4.
Upper
SMP
Module.
5.
Lower
SMP
Module.
Upper
CEC
Port
1
Power
Fault
1.
Verify
that
the
scalability
cables
are
firmly
connected.
2.
Run
diagnostic
programs.
3.
Scalability
cables.
4.
Upper
SMP
Module.
5.
Lower
SMP
Module.
Chapter
7.
Symptom-to-FRU
index
209