HP ENVY dv4t-5300 HP Envy dv4 Notebook PC Maintenance and Service Guide - Page 51

WLAN module, CAUTION

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2. Remove the RTC battery (2). 3. Remove the RTC battery. Reverse this procedure to install the RTC battery. When installing the RTC battery, make sure the "+" sign faces up. WLAN module Description Intel Centrino Wireless-N 2230 802.11b/g/n 2×2 WiFi and Bluetooth Combo Adapter (select models only) Ralink RT3290LE 802.11 b/g/n 1x1 WiFi and Bluetooth 4.0 Combo Adapter Spare part number 670290-001 690020-001 CAUTION: To prevent an unresponsive system, replace the wireless module only with a wireless module authorized for use in the computer by the governmental agency that regulates wireless devices in your country or region. If you replace the module and then receive a warning message, remove the module to restore device functionality, and then contact technical support. Before removing the WLAN module, follow these steps: 1. Shut down the computer. 2. Disconnect the power from the computer by unplugging the power cord from the computer. 3. Disconnect all external devices from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the service door (see Service door on page 35). Component replacement procedures 43

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2.
Remove the RTC battery
(2)
.
3.
Remove the RTC battery.
Reverse this procedure to install the RTC battery. When installing the RTC battery, make sure the “+”
sign faces up.
WLAN module
Description
Spare part number
Intel Centrino Wireless-N 2230 802.11b/g/n 2×2 WiFi and Bluetooth Combo Adapter (select
models only)
670290-001
Ralink RT3290LE 802.11 b/g/n 1x1 WiFi and Bluetooth 4.0 Combo Adapter
690020-001
CAUTION:
To prevent an unresponsive system, replace the wireless module only with a wireless
module authorized for use in the computer by the governmental agency that regulates wireless
devices in your country or region. If you replace the module and then receive a warning message,
remove the module to restore device functionality, and then contact technical support.
Before removing the WLAN module, follow these steps:
1.
Shut down the computer.
2.
Disconnect the power from the computer by unplugging the power cord from the computer.
3.
Disconnect all external devices from the computer.
4.
Remove the battery (see
Battery
on page
34
).
5.
Remove the service door (see
Service door
on page
35
).
Component replacement procedures
43