Rtc Battery - HP ProBook 4535s Service Manual

RTC battery

Description
RTC battery
Before removing the RTC battery, 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
5. Remove the following components:
a. Bottom door (see
b. Hard drive (see
c. Optical drive (see
d. WLAN module (see
e. WWAN module (see
f. Fan (see
g. Heat sink (see
h. Keyboard (see
i. Top cover (see
j. System board (see
Remove the RTC battery:
1. Position the computer upside-down with the front toward you.
2. Use a screwdriver to loosen the battery from the slot (1).
Battery on page
Bottom door on page
Hard drive on page
Optical drive on page
WLAN/Bluetooth combo card on page
WWAN module on page
Fan on page 81)
Heat sink on page
Keyboard on page
Top cover on page
System board on page
41).
43).
46)
44)
50)
83)
57)
59)
76)
Component replacement procedures
Spare part number
449137-001
52)
79