Lenovo N 500 Service Manual

Removing and replacing a FRU 
This section presents directions and drawings for use in removing and replacing a 
FRU. Be sure to observe the following general rules: 
1.   
 Do not try to service any computer unless you have been trained and certified. 
An untrained person runs the risk of damaging parts. 
2. 
 
 Before replacing any FRU, review “FRU replacement notices” on page 49. 
3. 
 
 Begin by removing any FRUs that have to be removed before the failing FRU. 
Any such FRUs are listed at the top of...

1010 Battery pack 
DANGER   
 
 
 
Table 10. Removal steps of battery pack 
Unlock the battery release lever 
1. Holding the battery release lever in the 
unlocked position 
2, remove the battery pack in the direction shown by arrow 

3. 
3
2
2
1
1
 
When installing: Install the battery pack along the slide rails of the slot. Then 
make sure that the battery release lever is in the locked position. 
  
Use only the battery specified in the parts list for your computer. Any other 
battery could ignite...

1020 Dummy cards 
 
Table 11 . Removal steps of dummy cards 
1
2
 
1
2
 
 
 
 
Lenovo 3000 N500 55 

1030 Hard disk drive (HDD) slot cover and HDD 
For access, remove this FRU: 
v   
 “1010 Battery pack” on page 54
 
 
Table 12. Removal steps of HDD slot cover and HDD 
1
2
 
3
 
When installing: Make sure that the HDD connector is attached firmly.   
Attention: 
v   
 Do not drop the hard disk drive or apply any physical shock to it. The hard 
disk drive is sensitive to physical shock. Improper handling can cause damage 
and permanent loss of data. 
v 
 
 Before removing the drive, have the user make a...

Table 12. Removal steps of HDD slot cover and HDD (continued) 
4
 
 
 
 
Lenovo 3000 N500 57 

1040 Optical drive 
For access, remove this FRU in order: 
v   
 “1010 Battery pack” on page 54
 Table 13. Removal steps of optical drive 
1 
Step Screw (quantity) Color Torque 

1 M2.5 × 10 mm, wafer-head, nylon-coated 
(1) 
Black 2.0 Nm
(2.5
 kgfcm) 
3
2
 
 
 
 
58 Lenovo 3000 N500 Hardware Maintenance Manual 

1050 Thermal slot cover 
For access, remove this FRU in order: 
v   
 “1010 Battery pack” on page 54
 Table 14. Removal steps of thermal slot cover 
2
11
 
 
 
 
Lenovo 3000 N500 59 

1060 DIMM 
For access, remove these FRUs in order: 
v   
 “1010 Battery pack” on page 54 
v 
 
 “1050 Thermal slot cover” on page 59
 Table 15. Removal steps of DIMM 
1
1
2
 
Note: If only one DIMM is used on the computer you are servicing, the card 
must be installed in SLOT-0 (
a: lower slot), but not in SLOT-1 (
b: upper 
slot).
b
a
 
When installing: Insert the notched end of the DIMM into the socket. Press the 
DIMM firmly, and pivot it until it snaps into the place. Make sure that it is 
firmly...

1070 Fan assembly 
For access, remove these FRUs in order: 
v   
 “1010 Battery pack” on page 54 
v 
 
 “1050 Thermal slot cover” on page 59
 Table 16. Removal steps of fan assembly 
1
1
1
2
 
Step Screw (quantity) Color Torque 

1 M2.5 × 5 mm, wafer-head, nylon-coated (3) Silver 2.0 Nm
(2.5
 kgfcm) 
When installing: Make sure that the fan connector is attached firmly to the 
system board. 
 
Lenovo 3000 N500 61 

Table 16. Removal steps of fan assembly (continued) 
3
 
 
 
 
62 Lenovo 3000 N500 Hardware Maintenance Manual