HP Dv4 1540us Service Guide - Page 87

SIM connector board, Remove the 2 Phillips PM2.5×4.0 screws

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SIM connector board Description SIM module for models with WWAN Spare part number 486845-001 NOTE: This section applies only to computer models with WWAN capability. NOTE: If there is a SIM inserted in the SIM slot, it must be removed before disassembling the computer. Be sure that the SIM is reinserted in the SIM slot after reassembling the computer. Before removing the SIM connector board, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 55). 5. Remove the SIM (see SIM on page 56) 6. Remove the keyboard (see Keyboard on page 72) 7. Remove the keyboard cover (see Keyboard cover on page 74) 8. Remove the speaker. (see Speaker assembly on page 77) Remove the SIM connector board: 1. Disconnect the SIM connector board cable (1) from the system board. 2. Remove the 2 Phillips PM2.5×4.0 screws (2) that secure the SIM connector board to the system board. 3. Remove the SIM connector board (3). Component replacement procedures 79

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SIM connector board
Description
Spare part number
SIM module for models with WWAN
486845-001
NOTE:
This section applies only to computer models with WWAN capability.
NOTE:
If there is a SIM inserted in the SIM slot, it must be removed before disassembling the
computer. Be sure that the SIM is reinserted in the SIM slot after reassembling the computer.
Before removing the SIM connector board, follow these steps:
1.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2.
Disconnect all external devices connected to the computer.
3.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4.
Remove the battery (see
Battery
on page
55
).
5.
Remove the SIM (see
SIM
on page
56
)
6.
Remove the keyboard (see
Keyboard
on page
72
)
7.
Remove the keyboard cover (see
Keyboard cover
on page
74
)
8.
Remove the speaker. (see
Speaker assembly
on page
77
)
Remove the SIM connector board:
1.
Disconnect the SIM connector board cable
(1)
from the system board.
2.
Remove the 2 Phillips PM2.5×4.0 screws
(2)
that secure the SIM connector board to the system
board.
3.
Remove the SIM connector board
(3)
.
Component replacement procedures
79