IBM pSeries 670, Service Manual

Page: 125 / 1032

Service Inspection Guide
Perform a service inspection on the system when:
v
The system is inspected for a maintenance agreement.
v
Service is requested and service has not recently been performed.
v
An alterations and attachments review is performed.
v
Changes have been made to the equipment that may affect its safe operation.
v External devices with their own power cables have those cables attached.
If the inspection indicates an unacceptable safety condition, the condition must be corrected before anyone
can service the machine.
Note: The owner of the system is responsible to correct any unsafe conditions.
Perform the following checks:
1. Check the covers for sharp edges and for damage or alterations that expose the internal parts of the
system.
2. Check the covers for proper fit to the rack. They should be in place and secure.
3. Gently rock the rack from side to side to verify the rack is stable.
4. Turn off the UEPO switch, turn off the circuit breakers on all optional IBF subsystems (if provided),
then disconnect both power cords from the customer’s receptacle.
5. Remove the covers.
6. Check for alterations or attachments. If there are any, check for obvious safety hazards, such as
broken wires, sharp edges, or broken insulation.
7. Check the internal cables for damage.
8. Check for dirt, water, and any other contamination within the system.
9. Check the air filters in the processor subsystem to ensure they are clean. Replace if necessary.
10. Check the voltage label on the back of the system to ensure that it matches the voltage at the outlet.
11. Check the external power cable for damage.
12. With the external power cable connected to the system, check for 0.1 ohm or less resistance between
the ground lug on the external power cable plug and the metal frame.
13. Perform the following checks on each device that has its own power cables:
a. Check for damage to the power cord.
b. Check for the correct grounded power cable.
c. With the external power cable connected to the device, check for 0.1 ohm or less resistance
between the ground lug on the external power cable plug and the metal frame of the device.
14. Install the covers.
Preventive Maintenance
Perform preventive maintenance on filters as indicated in the following section.
Processor Subsystem Air Filters
Attention: To maintain proper airflow, the air filters (part number 11P3781) must be inspected every six
months and replaced as necessary. To replace the air filters, it is not necessary to remove power from the
system or blower assemblies.
Chapter 1. Reference Information
105