Follow the instructions for the Model you are working on:
v Model 270 (See page 154)
v Models 800 and 810 (See page 156)
Instructions for Model 270
1. If the system has logical partitions, perform this procedure only from the Primary partition’s console
and the system control panel. To determine if the system has logical partitions, go to Determine if the
system has logical partitions, before continuing with this procedure.
2. Verify that your system unit power supply is functioning properly.
a. Disconnect the ac power cable to the system unit you are working on. On a Model 270 with a
7104 system unit expansion attached, disconnect both the system unit line cord and the
expansion unit line cord.
b. Disconnect all the connectors from the power supply.
c. Reconnect the ac power cable(s).
d. Use an instrument to push and hold the button adjacent to the LED on the system unit power
supply. If the LED shows a slow blink or a steady green light, then the power supply is functioning
normally. Do not replace it.
e. Reconnect the cables to your power supply and proceed with the next step.
3. Perform the following:
a. Disconnect the ac power cable to the system unit you are working on. On a Model 270 with a
7104 system unit expansion attached, disconnect both the system unit line cord and the
expansion unit line cord.
b. Disconnect all the I/O devices (tape, diskette, optical, and disk units) from the system unit you are
working on by sliding them partially out of the unit. See the Remove and replace procedures for
the model you are working on.
c. Remove and label all cards installed.
d. Reconnect the ac power cable(s) to the unit you are working on.
e. Power on the system.
Does
a power reference code occur?
v Yes: Continue with the next step.
v No: Go to step 7 (See page 155).
4. Perform the following:
a. Remove one of the air moving devices (AMDs) from the system unit that was not previously
removed during this procedure. (Disregard a AMD SRC if it occurs during this step.)
b. Power on the system.
Does
a power reference code occur?
v Yes: Continue with the next step.
v No: The AMD you removed in this step is the failing item.
This ends the procedure.
5. Have you removed all of the AMDs one at a time?
v No: Perform the following:
a. Power off the system.
b. Install the AMD that was removed in step 4 (See page 154) in the original location.
c. Repeat step 4 (See page 154).
v
Yes: Install all the AMDs and continue with the next step.
6. Perform the following:
a. Power off the system.
154 iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and
Isolation
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