4 Replacement Procedures 4.17 RTC battery
4-42 [CONFIDENTIAL] PORTÉGÉ M500 Maintenance Manual (960-559)
4.17 RTC battery
WARNING: When replacing the RTC battery, be sure to use a genuine battery
authorized by Toshiba. Installing the wrong battery could cause a battery
explosion or other damage.
If the RTC battery is found abnormal, it must not be installed. Replace it
with a new battery, and dispose of the old one according to the local
regulations.
Check for any of the following signs of damage:
1) Electrolyte leakage
• Corrosion (greenish color) on the battery connector or cable
• Corrosion on the computer’s battery connector
• White powder on any part of the battery
• White powder in the battery tray
• Clear liquid on the battery
• Clear liquid in the battery tray
• Clear liquid on any board near the battery
2) Damage to the connection cable
3) Damage to the connector housing
If any powder or liquid is found in or around the battery tray, clean it. Be
careful not to let any leaked material contact your eyes or mouth. Do not
inhale fumes from leaked material.
If leaked material contacts your skin, eyes or mouth, wash the affected area
thoroughly with clean water.