Compaq Presario CQ56-100 Compaq Presario CQ56 Notebook PC and HP G56 Notebook - Page 77

RTC battery

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RTC battery Description RTC battery Spare part number 602745-001 Before removing the RTC battery: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on the computer, 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 following components: a. Battery (see Battery on page 36) b. Hard drive (see Hard drive on page 37) c. WLAN module (see WLAN module on page 42) d. Memory module (see Memory module on page 44) e. Optical drive (see Optical drive on page 39) f. Keyboard (see Keyboard on page 46) g. Top cover (see Top cover on page 49) h. Display assembly (see Display assembly on page 59) i. System board (see System board on page 66) Remove the RTC battery: 1. Position the system board upside down. 2. Use a sharp, non-conductive tool to release the clip (1) that secures the battery to the system board. Component replacement procedures 69

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RTC battery
Description
Spare part number
RTC battery
602745-001
Before removing the RTC battery:
1.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on
the computer, 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 following components:
a.
Battery (see
Battery
on page
36
)
b.
Hard drive (see
Hard drive
on page
37
)
c.
WLAN module (see
WLAN module
on page
42
)
d.
Memory module (see
Memory module
on page
44
)
e.
Optical drive (see
Optical drive
on page
39
)
f.
Keyboard (see
Keyboard
on page
46
)
g.
Top cover (see
Top cover
on page
49
)
h.
Display assembly (see
Display assembly
on page
59
)
i.
System board (see
System board
on page
66
)
Remove the RTC battery:
1.
Position the system board upside down.
2.
Use a sharp, non-conductive tool to release the clip
(1)
that secures the battery to the system
board.
Component replacement procedures
69