IBM 3745 Problem Determination Manual page 160

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Alerts
3745 Alert Reference Code A8
Alert Condition: The power control shut the MOSS power off due to a fault detection of the MOSS
power supply or related fan(s). If a manual attempt to power on the MOSS is successful (intermittent
error), then at the end of MOSS IML, a BER is logged and an alarm A8 and its associated alert are
generated.
ALARM A8 : MOSS POWER SUPPLY DOWN OR MOSS COOLING PROBLEM
MOSS Equipment Cool Laos: Cool/Heat Subsystem
(Loss of MOSS Equipment Cooling: Cooling or Heating Subsystem)
Subvector and
Code Causes and Actions
Subfield Keys Points
Alert
10
Number
X 1519B7E68 1
SV X'92'
Alert Type
X 1 01 1
Permanent
sV X'92'
Alert Description
X
I
1502 1
MOSS' Equipment Cooling Loss
SV X'92'
Probable Causes
X 1 0300 1
Cooling or Heating Subsystem
SV X'93'
X 1 0200 1
Power Subsystem
User Causes
X l
74A1 1
Blocked Air Filter
SV X'94' SF X'01'
Actions
X
I
1310 1
Verify that Air Vents are not covered
SV X'94' SF X'81'
X I
1311 1
Check for dirty Filter
Install Causes (none)
SV X'95' SF X'01'
Failure Causes
X 1 0301 1
Cooling Fan
sv
X'96' SF X'01'
X 1 0310 1
Air Flow Detector
X 10201 1
Internal Power Unit
X 1 0202 1
Internal Power Control Unit
Actions X
I
3000 1
Contact Appropri ate Service Representative
SV X'96' SF X'81'
X
I
32C0 1
Report the following:
X
l
82 1
SF
(Reference Code (x'30'))
X I
82 1
SF
(Product Alert Reference Code (x'FO'))
Chapter 1. Alarms and Alerts
1-143