Mappwr-5: An Air Flow Loss Has Been Detected - IBM iSeries Series Hardware Problem Analysis And Isolation

c. Set all the BPR on/off switches on this BPA to the on position (to the left), and continue with the
next step.
2. Are there any BPDs you have not checked yet?
v Yes: Repeat step 1 (See page 369).
v No: Continue with the next step.
3. This problem can also be caused by any bulk power regulator (BPR) plugged into the failing BPA. The
system has up to two BPRs depending on the system configuration, and each BPR on the failing BPA
must be checked independently. The following steps check all the BPRs on the side of the BPA (A or
B) referenced by the error code that sent you to this procedure.
Are there any BPRs you have not checked yet?
v Yes: Go to step 5 (See page 370).
v No: Continue with the next step.
4. Exchange the following field replaceable units (FRUs) one at a time:
v Bulk power controller (BPC) on the side referenced by the error code that sent you to this
procedure. See symbolic FRU "BPCPWR" on page 287.
v Bulk power enclosure (BPE) on the side referenced by the error code that sent you to this
procedure. See Bulk power enclosure assembly - Models 870 and 890 for the part number and a
link to the remove and replace procedure.
After each FRU is exchanged, is the error code that sent you to this procedure still reported?
v No: The problem has been corrected. See Verify the repair.
This ends the procedure.
v Yes: Exchange the next FRU in the list. If all the FRUs have been exchanged, then call your next
level of support for assistance.
This ends the procedure.
5. Be sure you are working on the side of the BPA (A or B) referenced by the error code that sent you to
this procedure. FRUs on the operating side of the BPA (with BPC GOOD LED on) must not be
disturbed during this procedure. Perform the following:
a. Turn the BPR on/off switch to the off position (to the right) on one BPR.
b. If there is more than one BPR left to be checked, start with the uppermost unchecked BPR. Unplug
and make a note of the BPR to be checked, and carefully pull it approximately 25 mm (1 inch)
away from the backplane without unplugging any cables. See symbolic FRU "BPRPWR" on page
288.
Does the BPC GOOD LED on the BPC come on and stay on?
v No: Plug in the BPR and set the BPR on/off switch to the ON position (to the left). Go to step 3
(See page 370).
v Yes: Replace the BPR that is currently unplugged. Go to step 6 (See page 370).
6. Is the error code that sent you to this procedure still reported?
v No: The problem has been corrected. See Verify the repair.
This ends the procedure.
v Yes: Call your next level of support for assistance.
This ends the procedure.

MAPPWR-5: An air flow loss has been detected

For use by authorized service providers.
Note: Read the Danger and caution notices in the "MAPPWR" on page 364 introduction before performing
this procedure.
1. Check the following air inlets and outlets for blockage or obstruction:
v Front and rear frame door openings (except for acoustical foam)
v Bulk power assembly (BPA) cage:
370
iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and
Isolation