HP ProBook 4230s, Руководство по техническому обслуживанию и ремонту

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3. Remove the memory module (2) by pulling the module away from the slot at an angle.
NOTE: Memory modules are designed with a notch (3) to prevent incorrect insertion into the
memory module slot.
Reverse this procedure to install a memory module.
WWAN module
CAUTION: The WWAN module and the WLAN module are not interchangeable.
Description Spare part number
HP un2430 EV-DO/HSPA Mobile Broadband Module 634400-001
HP hs2340 HSPA+ Mobile Broadband Module 632155-001
Before removing the WWAN module, 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 41 ).
5. Remove the SIM (see SIM on page 42 ).
6. Remove the access door (see Access door on page 43 ).
Component replacement procedures 47