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88. Exchange the parts (indicated in the table below) one at a time,
starting with the part that has the highest percent of probable cause,
until the problem is corrected.
+--------------------------------------------------------------------+
¦
Location
+----------------------+----------------------+----------------------¦
¦ C
+----------------------+----------------------+----------------------¦
¦ F1, F2
+----------------------+----------------------+----------------------¦
¦ F
+----------------------+----------------------+----------------------¦
¦
¦ 1-8
+--------------------------------------------------------------------¦
¦ Note:
See the "Failing Item Table" in topic 3.3 for the correct
¦ part number for a specific FRU part.
+--------------------------------------------------------------------+
End of procedure.
89. Wait 3 minutes.
Is *000 displayed?
Note:
The Data display may be changing for up to 3 minutes while the
3514 is running the power-on basic tests.
Yes
No
Go to "Starting Problem Analysis" in topic 1.2.
End of procedure.
90. A +5 V dc or +12 V dc over-current condition may have occurred.
Remove the front cover (see "Front Cover Removal or Installation
Procedure" in topic 4.3).
91. Remove the rear cover (see "Rear Cover Removal or Installation
Procedure" in topic 4.4).
92. Look at the LEDs on the power modules at the back of the 3514.
Are the LED indicators on all three power modules off?
No
Yes
Go to step 97.
93. Using the control panel, enter the following sequence to display the
quick status of the power modules:
0 3
The control panel displays a power module quick status with the
location of failing power modules (A, B, or C) indicated by an x.
Example:
PICTURE 24
Power B is failing
Modules A and C are
operating correctly
94. Are two power modules indicated by an x as failing?
Yes
No
Go to Chapter 3, "Unit Reference Codes" in topic 3.0.
95. Set the 3514 Power switch to the Off position.
96. Exchange the power module that is indicated by an PICTURE 25 as
operating correctly.
+--------------------------------------------------------------------+
¦ Location
+----------------------+---------------------------------------------¦
¦ A-C
+--------------------------------------------------------------------¦
¦ Note:
See the "Failing Item Table" in topic 3.3 for the correct
3514 Service Information
Analyzing DC Power Problems
¦ Probable Cause
¦ 75%
¦ 15%
¦ 6%
¦
¦ 4%
See "Power Module" in topic 4.5.5.
¦ Description
¦ Power module
¦ Copyright IBM Corp. 1992, 1993
1.6 - 9
¦
Description
¦ Power module
¦ Fan
¦ Connector panel
¦ Disk drive power
¦ cable
¦
¦
¦
¦
¦
¦
¦
¦
¦
¦
¦
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