3-6 Troubleshooting and Diagnostics HP OmniBook 7100 Symptom Call Center: Repair Center: Repair Center: Suggestions Likely Causes Comments Password has been forgotten Verify proper ownership, then follow the removal procedure with the owner and log the appropriate data—see page 5-1. The user must call Technical Support and provide proof of ownership. Password removal is restricted to certain sites. See page 5-1. Power/Battery Short battery operating time Turn down display brightness. Check power management settings in BIOS Setup. Try the default settings. Inform user that certain applications can cause excess power usage.
(User can get power monitor from www.intel.com and monitor CPU load.) Heavy modem use can affect battery operating time. Battery. Motherboard. Battery capacity often decreases after a year or more. Does not run on battery, empty battery indicator Check battery contacts. If available, try another battery. Battery or contacts. Motherboard. Battery does not charge Check the power source. Check battery contacts. If available, try another battery and ac adapter. Check for high ambient temperature and blocked air vents. Battery or contacts. AC adapter. Motherboard. Heatsink (fan). DC-DC PCA. Check ac adapter. Check fan.
Second battery does not work, main battery works Try swapping the two batteries. Check contacts on second battery. Second battery does not charge until main battery is fully charged. Second battery or contacts. Motherboard. Battery indicator is inaccurate Completely charge and discharge the battery 2 to 4 cycles in the unit. DC-DC PCA. Motherboard. Try cycling the battery charge. Display Dark display, no light Adjust display brightness. Press Fn+F5 several times. Try external monitor. LCD module (backlight). Display cable or connections. Inverter PCA. LVDS PCA. If an external monitor displays no image, replace the video PCA instead, then motherboard. White display Adjust display brightness.
LCD module. Inverter PCA. LVDS PCA. Erratic display Display cable or connections. LCD module. Bright or missing pixels or lines See quality statement on page 5-2. LCD module. Display cable or connections. See quality statement on page 5-2.