IBM 8649 Hardware Maintenance Manual - Page 119

Hot-swap, power-supply, errors

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Page 119 highlights

Note: See "System replaceable units" on page 122 to determine which components should be replaced by a field service technician. Symptom to FRU list Symptom FRU/action Tape drive test failed. Tape drive BIOS timer test failed. System board IRQ controller test tailed. System board DMA channels test failed. System board RAM refresh test failed. System board Real-time clock test failed. System board System board LED test failed. System board Cache test failed. Microprocessor Keyboard test failed. 1. Keyboard 2. System board Speaker test failed. System board Mouse test failed. 1. Mouse 2. System board Hot-swap power-supply LED errors Use the information in this section to solve power-supply problems. Note: The minimum configuration required for the dc good light to be lit is: v Power supply v Power cage assembly, if installed. v System board (set switch 7 of SW1 to bypass the power switch; see "System-board internal connectors" on page 91. Note: See "System replaceable units" on page 122 to determine which components should be replaced by a field service technician. AC good LED DC good LED Description FRU/action Off Off No power to system or ac problem. 1. Check ac power to the system. 2. Power supply. Chapter 6. Symptom-to-FRU index 109

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Note:
See
“System
replaceable
units”
on
page
122
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Symptom
to
FRU
list
Symptom
FRU/action
Tape
drive
test
failed.
Tape
drive
BIOS
timer
test
failed.
System
board
IRQ
controller
test
tailed.
System
board
DMA
channels
test
failed.
System
board
RAM
refresh
test
failed.
System
board
Real-time
clock
test
failed.
System
board
System
board
LED
test
failed.
System
board
Cache
test
failed.
Microprocessor
Keyboard
test
failed.
1.
Keyboard
2.
System
board
Speaker
test
failed.
System
board
Mouse
test
failed.
1.
Mouse
2.
System
board
Hot-swap
power-supply
LED
errors
Use
the
information
in
this
section
to
solve
power-supply
problems.
Note:
The
minimum
configuration
required
for
the
dc
good
light
to
be
lit
is:
v
Power
supply
v
Power
cage
assembly,
if
installed.
v
System
board
(set
switch
7
of
SW1
to
bypass
the
power
switch;
see
“System-board
internal
connectors”
on
page
91.
Note:
See
“System
replaceable
units”
on
page
122
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
AC
good
LED
DC
good
LED
Description
FRU/action
Off
Off
No
power
to
system
or
ac
problem.
1.
Check
ac
power
to
the
system.
2.
Power
supply.
Chapter
6.
Symptom-to-FRU
index
109