Lenovo N 500 Service Manual

							1140 LCD unit 
For access, remove these FRUs in order: 
v   
 “1010 Battery pack” on page 54 
v 
 
 “1090 Wireless LAN card slot cover and PCI Express Mini Card for wireless 
LAN” on page 65 
v 
 
 “ 111 0 Keyboard cover and power board” on page 68 
v 
 
 “1130 Keyboard” on page 71
 Table 23. Removal steps of LCD unit 
Release the antenna cables from the cable guides on bottom side of the 
computer. 
1
1
 
 
Lenovo 3000 N500 73 
						

							Table 23. Removal steps of LCD unit (continued) 
Peel off the tapes securing the antenna cables 
2. Then release the cables from 
the guide hole of the system board 
3 and the cable guides 
4. 
5
3
6
5
4
2
 
When installing: 
 
1. 
 
 Route the antenna cables along the cable guides and secure them with the 
tapes. As you route the cables, make sure that they are not subjected to any 
tension. Tension could cause the cables to be damaged by the cable guides, 
or a wire to be broken. 
2. 
 
 Make sure that the LCD connector is attached firmly. 
7
7 
Step Screw (quantity) Color Torque 

7 M2.5 × 8 mm, wafer-head, nylon-coated (4) Black 2.0 Nm
(2.5
 kgfcm) 
 
74 Lenovo 3000 N500 Hardware Maintenance Manual 
						

							Table 23. Removal steps of LCD unit (continued) 
8
8
 
 
 
 
Lenovo 3000 N500 75 
						

							1150 Keyboard bezel and LED board L 
For access, remove these FRUs in order: 
v   
 “1010 Battery pack” on page 54 
v 
 
 “1090 Wireless LAN card slot cover and PCI Express Mini Card for wireless 
LAN” on page 65 
v 
 
 “ 111 0 Keyboard cover and power board” on page 68 
v 
 
 “1130 Keyboard” on page 71 
v 
 
 “1140 LCD unit” on page 73
Note:
 LED board L is attached to the keyboard bezel.
 Table 24. Removal steps of keyboard bezel and LED board L 
1
1
2
2
2
2
2
2
2
2
2
 
Step Screw (quantity) Color Torque 

1 M2 × 2.5 mm, wafer-head, nylon-coated (2) Black 1.0 Nm
(1.5
 kgfcm) 

2 M2.5 × 8 mm, wafer-head, nylon-coated (9) Black 2.0 Nm
(2.5
 kgfcm) 
 
76 Lenovo 3000 N500 Hardware Maintenance Manual 
						

							Table 24. Removal steps of keyboard bezel and LED board L (continued) 
3333
33
 
Step Screw (quantity) Color Torque 

3 M2.5 × 5 mm, small-head, nylon-coated (6) Black 2.0 Nm
(2.5
 kgfcm) 
5
4
4
4
5
4
5
4
4
6
 
 
When installing: Make sure that all the FPC connectors and the cable are 
attached firmly. 
 
Lenovo 3000 N500 77 
						

							Table 24. Removal steps of keyboard bezel and LED board L (continued) 
7
 
8
910
8
 
Step Screw (quantity) Color Torque 

8 M2 × 3 mm, wafer-head, nylon-coated (2) Silver 2.0 Nm
(2.5
 kgfcm) 
 
 
78 Lenovo 3000 N500 Hardware Maintenance Manual 
						

							1160 LED board R 
For access, remove these FRUs in order: 
v   
 “1010 Battery pack” on page 54 
v 
 
 “1090 Wireless LAN card slot cover and PCI Express Mini Card for wireless 
LAN” on page 65 
v 
 
 “ 111 0 Keyboard cover and power board” on page 68 
v 
 
 “1130 Keyboard” on page 71 
v 
 
 “1140 LCD unit” on page 73 
v 
 
 “1150 Keyboard bezel and LED board L” on page 76
 Table 25. Removal steps of LED board R 
3
1
12
 
 
When installing: Make sure that the FPC connector is attached firmly. 
 
 
Lenovo 3000 N500 79 
						

							1170 System board and ExpressCard slot assembly 
 
For access, remove these FRUs in order: 
v   
 “1010 Battery pack” on page 54 
v 
 
 “1090 Wireless LAN card slot cover and PCI Express Mini Card for wireless 
LAN” on page 65 
v 
 
 “ 111 0 Keyboard cover and power board” on page 68 
v 
 
 “1130 Keyboard” on page 71 
v 
 
 “1140 LCD unit” on page 73 
v 
 
 “1150 Keyboard bezel and LED board L” on page 76 
v 
 
 “1160 LED board R” on page 79
Note:
 ExpressCard slot assembly is attached to the system board.
 Table 26. Removal steps of system board, PC Card/ExpressCard slots assembly 
1
 
When installing: Make sure that the connector is attached firmly. 
 
Important notices for handling the system board:
When
 handling the system board, bear the following in mind. 
v   
 Be careful not to drop the system board on a bench top that has a hard 
surface, such as metal, wood, or composite. 
v 
 
 Avoid rough handling of any kind. 
v 
 
 At every point in the process, be sure not to drop or stack the system board. 
v 
 
 If you put a system board down, be sure to put it only on a padded surface 
such as an ESD mat or conductive corrugated material.
 
80 Lenovo 3000 N500 Hardware Maintenance Manual 
						

							Table 26. Removal steps of system board, PC Card/ExpressCard slots assembly (continued) 
3
2
44
 
When installing: Make sure that the connectors are attached firmly. 
Step Screw (quantity) Color Torque 

4 M2.5 × 5 mm, wafer-head, nylon-coated (2) Black 2.0 Nm
(2.5
 kgfcm) 
 
Lenovo 3000 N500 81 
						

							Table 26. Removal steps of system board, PC Card/ExpressCard slots assembly (continued) 
5
abb
c
 
When installing: When attaching the system board to the base cover, adjust the 
placement of the wireless radio switch as shown in 
a, and make sure that both 
of the audio jack and the microphone jack are attached to the holes on the base 
cover as shown in 
b. Improper placement of the switch or those jacks might 
cause a damage. 
6
7
7
 
Step Screw (quantity) Color Torque 

7 M2 × 3 mm, wafer-head, nylon-coated (2) Black 2.0 Nm
(2.5
 kgfcm) 
 
82 Lenovo 3000 N500 Hardware Maintenance Manual