Lenovo ThinkPad 390X Hardware Maintenance Manual (November 1999): ThinkPad 390 - Page 49
Power-Related Symptoms, PC Card (PCMCIA)-Related Symptoms, Speaker-Related Symptoms, Power
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Power-Related Symptoms Symptom/Error FRU/Action in Sequence Power shuts down during operation. 1. Battery 2. AC Adapter 3. DC/DC & Charger board 4. System board The system will not power on. 1. Battery 2. AC Adapter 3. DC/DC & Charger board 4. System board The system will not power off. 1. Press and hold the power switch for more than 4 seconds 2. DC/DC & Charger board 3. System board Battery can't be charged. Battery DC/DC & Charger board Combobay board System board PC Card (PCMCIA)-Related Symptoms Symptom/Error FRU/Action in Sequence System cannot detect the PC Card (PCMCIA) 1. PC Card (PCMCIA) slots assembly 2. System board Speaker-Related Symptoms Symptom/Error FRU/Action in Sequence Speakers make noise or no sound comes from system. 1. Speaker 2. System board In DOS or Windows multimedia programs, no sound comes from the computer. 1. Speaker 2. System board Power Management-Related Symptoms Symptom/Error The system will not enter hibernation mode. FRU/Action in Sequence 1. Check if hibernation file is created. 2. Keyboard (if control is from the keyboard) 3. Hard disk drive 4. System board ThinkPad 390X / i 1700 HMM 43