Lenovo B580 Laptop Hardware Maintenance Manual - Lenovo B580 - Page 78

Base cover, Removal steps of speaker assembly, Applying labels to the base cover

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Removal steps of speaker assembly Remove the screws 1 . Then remove the speaker assembly 2 . 1 1 2 11 2 Step 1 Screw (quantity) M2.5 × 5.7 mm, flat-head, nylon-coated (4) Color Black Torque 4.0 kgfcm 1210 Base cover For access, remove these FRUs in order: • "1010 Battery pack" on page 44 • "1020 Bottom slot cover" on page 44 • "1030 Optical drive" on page 45 • "1040 Memory modules" on page 46 • "1050 Hard disk drive assembly" on page 47 • "1060 PCI Express Mini Card for wireless LAN" on page 49 • "1070 mSATA solid-state drive" on page 51 • "1080 Backup battery" on page 52 • "1090 Keyboard" on page 53 • "1100 Keyboard bezel" on page 55 • "1130 Microphone assembly" on page 60 • "1140 I/O board" on page 61 • "1150 System board assembly and USB board" on page 62 • "1160 DC-in connector" on page 65 • "1190 LCD unit" on page 69 • "1200 Speaker assembly" on page 71 Applying labels to the base cover The new base cover is shipped with a kit containing labels of several kinds. Apply those labels listed when you replace the base cover. For the labels which are not shipped with the new base cover, peel them off from the old base cover, and adhere them to the new one. Note: If you replace a part with the Windows Certificate of Authentication (COA) label 11 , return the old part with the label attached to the customer. Otherwise, you can provide the customer with a letter, stating the original location of the label on the computer and the information on the label, such as the part number, serial number, and product key. 72 Hardware Maintenance Manual

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Removal steps of speaker assembly
Remove the screws
1
. Then remove the speaker assembly
2
.
1
1
1
1
2
2
Step
Screw (quantity)
Color
Torque
1
M2.5 × 5.7 mm, flat-head, nylon-coated (4)
Black
4.0 kgfcm
1210 Base cover
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 44
•
“1020 Bottom slot cover” on page 44
•
“1030 Optical drive” on page 45
•
“1040 Memory modules” on page 46
•
“1050 Hard disk drive assembly” on page 47
•
“1060 PCI Express Mini Card for wireless LAN” on page 49
•
“1070 mSATA solid-state drive” on page 51
•
“1080 Backup battery” on page 52
•
“1090 Keyboard” on page 53
•
“1100 Keyboard bezel” on page 55
•
“1130 Microphone assembly” on page 60
•
“1140 I/O board” on page 61
•
“1150 System board assembly and USB board” on page 62
•
“1160 DC-in connector” on page 65
•
“1190 LCD unit” on page 69
•
“1200 Speaker assembly” on page 71
Applying labels to the base cover
The new base cover is shipped with a kit containing labels of several kinds. Apply those labels listed when
you replace the base cover. For the labels which are not shipped with the new base cover, peel them off
from the old base cover, and adhere them to the new one.
Note:
If you replace a part with the Windows Certificate of Authentication (COA) label
11
, return the old part
with the label attached to the customer. Otherwise, you can provide the customer with a letter, stating the
original location of the label on the computer and the information on the label, such as the part number,
serial number, and product key.
72
Hardware Maintenance Manual