HP Dragonfly 13.5 Maintenance and Service Guide - Page 65

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Table 5-7 Fan/heat sink assembly descriptions and part numbers (continued) Description Standard fan/heat sink assembly Lightweight fan/heat sink assembly Spare part number N11560-001 N11561-001 Before removing the fan/heat sink assembly, follow these steps: 1. Prepare the computer for disassembly (see Preparation for disassembly on page 48). 2. Remove the bottom cover (see Bottom cover on page 48). 3. Disconnect the battery cable from the system board (see Battery on page 50). Remove the fan/heat sink assembly: 1. Disconnect the two fan cables (1) from the system board. 2. Loosen the five captive screws (2) that secure the fans to the computer. 3. In the order indicated on the fan/heat sink assembly, loosen the four Phillips captive screws (3) that secure the fan/heat sink assembly to the computer. 4. Remove the fan/heat sink assembly (4) from the computer. 5. Thoroughly clean the thermal material from the surfaces of the fan/heat sink assembly and the system board components each time the fan/heat sink assembly is removed. Replacement thermal material is included with the fan/heat sink assembly and system board spare part kits. The following illustration shows the replacement thermal material locations. Thermal paste is used on the system board processor (1) and on the fan/heat sink assembly area (2) that services it. Fan/heat sink assembly 59

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Table 5-7
Fan/heat sink assembly descriptions and part numbers
(continued)
Description
Spare part number
Standard fan/heat sink assembly
N11560-001
Lightweight fan/heat sink assembly
N11561-001
Before removing the fan/heat sink assembly, follow these steps:
1.
Prepare the computer for disassembly (see
Preparation for disassembly
on page
48
).
2.
Remove the bottom cover (see
Bottom cover
on page
48
).
3.
Disconnect the battery cable from the system board (see
Battery
on page
50
).
Remove the fan/heat sink assembly:
1.
Disconnect the two fan cables
(1)
from the system board.
2.
Loosen the five captive screws
(2)
that secure the fans to the computer.
3.
In the order indicated on the fan/heat sink assembly, loosen the four Phillips captive screws
(3)
that
secure the fan/heat sink assembly to the computer.
4.
Remove the fan/heat sink assembly
(4)
from the computer.
5.
Thoroughly clean the thermal material from the surfaces of the fan/heat sink assembly and
the system board components each time the fan/heat sink assembly is removed. Replacement
thermal material is included with the fan/heat sink assembly and system board spare part kits. The
following illustration shows the replacement thermal material locations.
Thermal paste is used on the system board processor
(1)
and on the fan/heat sink assembly area
(2)
that services it.
Fan/heat sink assembly
59