Lenovo ThinkPad 365E-ED ThinkPad 365, SelectaDock I - Hardware Maintenance Man - Page 116
Power Management Features, In the ThinkPad Features Program, the computer
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6. Measure the voltage of the backup battery. Refer to the following table for voltages: Wire + − Voltage (V dc) +2.5 to +3.7 Ground If the voltage is correct, replace the system board. If the voltage is not correct, the backup battery has been discharged. Replace the backup battery. If the backup battery discharges quickly after replacement, replace the system board. Power Management Features Three power management modes are provided by the computer to reduce power consumption and prolong battery power. Standby Mode: When in standby mode the following occurs: The LCD backlight turns off. The hard disk motor stops. Events that cause the computer to enter standby mode: Standby requested by the Fn key. (Fn+F3) No activity under auto-standby enabled by the ThinkPad Features program. Events that cause the computer to exit or resume standby mode: (Resume) Any key operation. Suspend Mode: When in suspend mode, the following, in addition to the two actions of standby mode, occur: The LCD is powered off. The hard disk is powered off. The CPU is stopped. Notes 1. In the ThinkPad Features Program, the computer can be set to "Will not suspend even if LCD is closed." 2. When the computer is powered with ac power and is used with one of the communication PC cards, the computer enters standby mode; the PC card and application program remain active. 3. The computer cannot enter suspend mode while a communication link is running. 104 IBM Mobile Systems - ThinkPad HMM Volume 3