IBM 9228 Service Guide - Page 139

replaceable units FRU., be performed only by a trained service technician.

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Page 139 highlights

v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See Chapter 3, "Parts listing, Type 9228 and 9232," on page 19 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a trained service technician. Power-supply Front LEDs information panel power-on AC DC LED Description Action Off Off Off No power to the 1. Check the ac power to the computer, or a computer. problem with the ac power source. 2. Make sure that the power cord is connected to a functioning power source. 3. Replace the power supply. Lit Off Off DC source power problem. 1. Remove the ac power from the power supply, then reconnect the ac power. 2. View the system-error log (see "Error logs" on page 93). Lit Lit Off Standby power Replace the power supply. problem. Lit Lit Flashing The power is good. The computer is not powered on. No action is necessary. Lit Lit Lit The power is good. The computer is powered on. No action is necessary. Chapter 5. Diagnostics 121

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v
Follow the suggested actions in the order in which they are listed in the Action
column until the problem is solved.
v
See Chapter 3, “Parts listing, Type 9228 and 9232,” on page 19 to determine which
components are customer replaceable units (CRU) and which components are field
replaceable units (FRU).
v
If an action step is preceded by “(Trained service technician only),” that step must
be performed only by a trained service technician.
Power-supply
LEDs
Front
information
panel power-on
LED
Description
Action
AC
DC
Off
Off
Off
No power to the
computer, or a
problem with the
ac power source.
1.
Check the ac power to the
computer.
2.
Make sure that the power cord is
connected to a functioning power
source.
3.
Replace the power supply.
Lit
Off
Off
DC source
power problem.
1.
Remove the ac power from the
power supply, then reconnect the ac
power.
2.
View the system-error log (see
“Error logs” on page 93).
Lit
Lit
Off
Standby power
problem.
Replace the power supply.
Lit
Lit
Flashing
The power is
good.
The computer is not powered on. No
action is necessary.
Lit
Lit
Lit
The power is
good.
The computer is powered on. No action
is necessary.
Chapter 5. Diagnostics
121