1170 Power Button Sub Card; 1180 I/O Sub Card With Usb Connector And Audio Jack - Lenovo 3254ACU Hardware Maintenance Manual

When installing: Attach the speaker assembly and route the cable as shown in the following figure, and
make sure that the speaker connector is attached firmly.

1170 Power button sub card

For access, remove these FRUs in order:
• "1010 Battery pack" on page 60
• "1020 Large bottom cover" on page 61
• "1040 Optical drive or blank bezel" on page 62
• "1060 Hard disk drive assembly" on page 64
• "1120 Keyboard" on page 74
• "1130 Keyboard bezel" on page 77
Removal steps of power button sub card
Step Screw (quantity)
1
M2 × 3 mm, wafer-head, nylon-coated (1)

1180 I/O sub card with USB connector and audio jack

For access, remove these FRUs in order:
• "1010 Battery pack" on page 60
• "1020 Large bottom cover" on page 61
Color Torque
Black 0.181 Nm
(1.85 kgf-cm)
.
Chapter 9 Removing or replacing a FRU
85