Lenovo ThinkPad 390X Hardware Maintenance Manual (November 1999): ThinkPad 390 - Page 49

Power-Related Symptoms, PC Card (PCMCIA)-Related Symptoms, Speaker-Related Symptoms, Power

Page 49 highlights

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

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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
FRU/Action in Sequence
The system will not
enter hibernation
mode.
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