Lenovo B590 Hardware Maintenance Manual page 69

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 56
• "1130 Microphone assembly" on page 60
Removal steps of system board assembly
Remove the screws 1 , and then detach the connectors as shown in the following illustration.
Step Screw (quantity)
1
M2 × 5 mm, flat-head, nylon-coated (2)
When installing: Ensure that all the connectors are attached firmly.
Torque
Color
Black 1.85 kgf-cm
.
Chapter 7 Removing and replacing a FRU
63