Lenovo B590 Hardware Maintenance Manual - Page 71

DC-in connector, 1150 System board assembly and USB board

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1160 DC-in connector 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 • "1140 I/O board" on page 61 • "1150 System board assembly and USB board" on page 62 Removal steps of DC-in connector Detach the connector 1 . Remove the screw 2 and the DC-in connector bracket 3 . Then remove the DC-in connector in the direction shown by the arrow 4 . 1 4 2 3 4 Step 2 Screw (quantity) M2.5 × 5 mm, flat-head, nylon-coated (1) Color Black When installing: Ensure that the cable is attached firmly to the system board. Torque 4 kgf-cm Chapter 7. Removing and replacing a FRU 65

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1160 DC-in connector
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
•
“1140 I/O board” on page 61
•
“1150 System board assembly and USB board” on page 62
Removal steps of DC-in connector
Detach the connector
1
. Remove the screw
2
and the DC-in connector bracket
3
. Then remove the DC-in
connector in the direction shown by the arrow
4
.
2
4
4
3
1
Step
Screw (quantity)
Color
Torque
2
M2.5 × 5 mm, flat-head, nylon-coated (1)
Black
4 kgf-cm
When installing:
Ensure that the cable is attached firmly to the system board.
Chapter 7
.
Removing and replacing a FRU
65