TE Connectivity LGA1366 User manual
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28 Apr ‘11 Rev.C
411-78289
Instruction Sheet
Lever Actuated Land Grid Array
LGA1366 / LGA1356 Socket
1 of 31
LGA1366 / LGA1356 is designed to
receive the 1366 / 1356 position LGA
package. Read this instructions thoroughly
before installing the package onto the
socket. This sheet covers the instruction
from after SMT through package
installation.
Tyco provides three components for
LGA1366 / LGA1356 socket system, ILM
cover assembly (Fig 2a), socket (Fig2b),
and back plate (Fig2c).
These components shall be used correctly
to secure electrical and mechanical quality.
Fig.1 System of LGA1366 / LGA1356 socket
ILM cover
assembly
1. Introduction
LGA1366 /
LGA1356
Socket
Back plate
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28 Apr ‘11 Rev.C
411-78289
Instruction Sheet
Lever Actuated Land Grid Array
LGA1366 / LGA1356 Socket
2 of 31
Fig.2c Back plate
(A) Fig.2d Back plate
(B)
Fig.2a LGA1366 / LGA1356
socket with PnP cap (on PCB) Fig.2b ILM cover
assembly
X-1554116-X (*1)
2) LGA1356 Socket
Type (B) -Server back plate
Type (A) -Desk top back plate
X-1981467-X (*1)
X-1939739-X (*1)
4) Back plate
(*2)
X-1939738-X (*1)
3) ILM cover assy
X-1981837-X (*1)
1) LGA1366 Socket
Part Number
Description
(*1) refer to customer drawing for detail
(*2) Type of back plate is selected by customer’s board design
In this document, “Back plate” is used as standard name
2. Components
Components are changed by system design and combination of three components is required.
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28 Apr ‘11 Rev.C
411-78289
Instruction Sheet
Lever Actuated Land Grid Array
LGA1366 / LGA1356 Socket
3 of 31
Fig.3 LGA1366 / LGA1356
socket with PnP cap on PCB Fig.4 LGA1366 / LGA1356
socket without PnP cap
Contacts
PnP cap
Housing
Orientation key for
processor
3. Description of each components
3.1 LGA1366 / LGA1356 socket
Contact grid area
Orientation key for ILM
cover assembly
Tab for finger
access
Notch for finger
access
Pin1 indicator
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28 Apr ‘11 Rev.C
411-78289
Instruction Sheet
Lever Actuated Land Grid Array
LGA1366 / LGA1356 Socket
4 of 31
Lever
Frame
Load plate
Nut (4pcs )
Fig.5 ILM cover assembly (case of U shape lever)
Hook for lever
Pin1 indicator
Tail tab
Load plate
tab(*1)
3. Description of each components
3.2 ILM cover assembly
*1) Load plate tab is on lever in shipping status for easier assembly
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28 Apr ‘11 Rev.C
411-78289
Instruction Sheet
Lever Actuated Land Grid Array
LGA1366 / LGA1356 Socket
5 of 31
Fig.8 Server back plate (B)Fig.6 Desktop back plate (A)
Stud bolt for ILM nut
(4pcs)
Female nut for
heat sink (4pcs)
Fig.7 Stud bolt
Insulator
sheet
Top view
Bottom view Bottom view
Top view
3. Description of each components
3.3 Back plate
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28 Apr ‘11 Rev.C
411-78289
Instruction Sheet
Lever Actuated Land Grid Array
LGA1366 / LGA1356 Socket
6 of 31
Three components shown below are used in this document.
For SMT’d socket, please refer 114-5432, application specification for SMT process
onto PCB.
Fig.9 LGA1366 / LGA1356
socket on PCB Fig.10 ILM cover assembly Fig.11 Server back plate
4. ILM cover assembly and back plate assembly procedure
4.1 Prepare components
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28 Apr ‘11 Rev.C
411-78289
Instruction Sheet
Lever Actuated Land Grid Array
LGA1366 / LGA1356 Socket
7 of 31
Fig.12 Fig.14
Fig.13
Attach back plate to PCB from back side. 4 stud bolts go through applicable 4 holes
of PCB. (Fig.12)
There should be no clearance between PCB and back plate (Fig.14)
Please confirm if there are any foreign object or irregular warpage of PCB
There should be no
clearance between
PCB and back plate
4. ILM cover assembly and back plate assembly procedure
4.2 Assemble back plate on PCB
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28 Apr ‘11 Rev.C
411-78289
Instruction Sheet
Lever Actuated Land Grid Array
LGA1366 / LGA1356 Socket
8 of 31
Fig.17
Fig.16
Grasp the ILM cover assembly north side and south side as shown in Fig 15
Then put it onto PCB confirming the orientation by pin1 indicator.
Pin1 indicator
Pin1 indicator on
PnP cap is under
load plate
4. ILM cover assembly and back plate assembly procedure
4.3 Attach ILM cover assembly
North
South
Fig.15
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28 Apr ‘11 Rev.C
411-78289
Instruction Sheet
Lever Actuated Land Grid Array
LGA1366 / LGA1356 Socket
9 of 31
Fig.19
4. ILM cover assembly and back plate assembly procedure
4.3 Attach ILM cover assembly (Cont’d)
Fig.18
CAUTION
Please don’t open load plate before assembly to PCB.
Load plate cannot be closed due to load plate
hitting the nut pushed up by the studs
Load plate
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28 Apr ‘11 Rev.C
411-78289
Instruction Sheet
Lever Actuated Land Grid Array
LGA1366 / LGA1356 Socket
10 of 31
Fig.21
4. ILM cover assembly and back plate assembly procedure
4.3 Attach ILM cover assembly (Cont’d)
All of the nuts of ILM cover assembly are
pushed up by the studs if placed in correct
orientation. (Fig.20)
OK
Nut is pushed up
by stud
OK
All nuts are pushed
up by stud
NG
Nuts are pushed
up by stud
Float from PCB
Non clearance between
nut and frame
Case of incorrect
orientation
NG
Non clearance
between nut and frame
ILM has large gap to PCB
Fig.20
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