Compaq 12XL300 Models XL300, XL300A, and XL300B - Maintenance & Service Gu - Page 111

Removing the Real Time Clock Battery

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Presario 1200XL Series Model XL300, XL300A, and XL300B Removing the Real Time Clock Battery ÄCAUTION: Removing the RTC battery clears the Power-on password and removes all setup attributes that are programmed in the CMOS. To remove the RTC battery, complete the following steps: 1. Prepare the Notebook for disassembly (pg 9). 2. Remove the Palmrest Cover with TouchPad (pg 14). 3. Remove the Keyboard (pg 16). 4. Remove the Heatspreader (pg 17). 5. Remove the Upper CPU Cover (pg 30). 6. Remove the Power Supply Board (pg 35). 7. Locate the RTC battery next to the CD/DVD connector. 8. Using a non-metallic object, gently pry the RTC battery upward to remove it. To replace the RTC battery, press it firmly into the socket and reassemble the remaining components by reversing their removal procedures. ÄCAUTION: When removing the RTC battery from the system board, it is extremely important to use a non-metallic object to pry up the RTC battery to prevent damage to the system board or the battery. 38 REMOVAL SEQUENCE PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIES

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38 R
EMOVAL
S
EQUENCE
P
RESARIO
N
OTEBOOK
M
AINTENANCE
AND
S
ERVICE
G
UIDE
1200XL S
ERIES
Presario 1200XL Series
Model XL300, XL300A, and XL300B
Removing the Real Time Clock Battery
Ä
CAUTION:
Removing the RTC battery clears the Power-on password and removes
all setup attributes that are programmed in the CMOS.
To remove the RTC battery, complete the following steps:
1.
Prepare the Notebook for disassembly (
pg 9
).
2.
Remove the Palmrest Cover with TouchPad (
pg 14
).
3.
Remove the Keyboard (
pg 16
).
4.
Remove the Heatspreader (
pg 17
).
5.
Remove the Upper CPU Cover (
pg 30
).
6.
Remove the Power Supply Board (
pg 35
).
7.
Locate the RTC battery next to the CD/DVD connector.
8.
Using a non-metallic object, gently pry the RTC battery upward to remove it.
To replace the RTC battery, press it firmly into the socket and reassemble the remaining
components by reversing their removal procedures.
Ä
CAUTION:
When removing the RTC battery from the system board, it is extremely
important to use a non-metallic object to pry up the RTC battery to prevent
damage to the system board or the battery.