HP ZBook 15 G3 Base Model Mobile Workstation User Manual download pdf (Page 59)

NOTE: If the WWAN antenna cables are not connected to the terminals on the WWAN module, protective

sleeves should be installed on the antenna connectors, as shown in the following illustration.

Reverse this procedure to install the WWAN module.

RTC battery

Description Spare part number

RTC battery (includes cable and double-sided adhesive) 848234-001

Before removing the RTC battery, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

computer on, and then shut it down through the operating system.

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 bottom cover (see Bottom cover on page 32).

5. Disconnect the battery (see Battery on page 34).

Remove the RTC battery:

1. Disconnect the RTC battery cable (1) from the system board.

Component replacement procedures 47

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HP ZBook 15 G3 Base Model Mobile Workstation User Manual Page 59