Processor and heat sink replacement (Trained technicians only)
Use this information to remove and install a processor or a heat sink.
The server supports two types of heat sinks: air cooling (T-shape) heat sink and closed loop heat sink. For detailed information on heat sink selection, see Thermal rules.
This section is for processor and air cooling (T-shape) heat sink replacement. For the replacement of closed loop heat sink (L2AM module), refer to Lenovo Neptune(TM) Liquid to Air Module replacement (trained technicians only).
This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install the part without proper training and qualification.
Before replacing a processor, check the current PSB fuse policy. See Service process before replacement at Service process for updating PSB fuse state.
After replacing a processor, ensure that the processor fuse status is expected without unexpected XCC event logs. See Service process after replacing a processor at Service process for updating PSB fuse state.
When the server has an L2AM module (Closed loop cooling module) installed, you must apply for a handle (L2AM heat sink bracket) first if you need to install or remove the processor board, I/O board, processor and PIB board. However, while replacing the old L2AM module with a new one, you do not need to apply for a handle (L2AM heat sink bracket) as the new L2AM module contains it.
Before you begin replacing a processor, make sure that you have an alcohol cleaning pad and thermal grease.
Each processor socket must always contain a cover or a processor. When replacing a processor, protect the empty processor socket with a cover.
Do not touch the processor socket or processor contacts. Processor-socket contacts are very fragile and easily damaged. Contaminants on the processor contacts, such as oil from your skin, can cause connection failures.
Do not allow the thermal grease on the processor or heat sink to come in contact with anything. Contact with any surface can compromise the thermal grease, rendering it ineffective. Thermal grease can damage components, such as the electrical connectors in the processor socket.
| 1 Captive screws (8) | 7 Processor contacts |
| 2 Heat sink | 8 Processor triangular mark |
| 3 Processor identification label | 9 Carrier triangular mark |
| 4 Heat sink triangular mark | 10 Processor carrier |
| 5 Screw bolts (6) | 11 Processor heat spreader |
| 6 Retention frame triangular mark |