Lenovo ThinkPad 390 Hardware Maintenance Manual (March 1999): ThinkPad 390E on - Page 55

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

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Symptom/Error The system will not power on. The system will not power off. Battery can't be charged. FRU/Action in Sequence 1. Battery ASM 2. AC Adapter 3. DC/DC & Charger board ASM 4. System board 1. Press and hold the power switch for more than 4 seconds 2. DC/DC & Charger board ASM 3. System board Battery DC/DC & Charger board ASM 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. Keyboard (if control is from the keyboard) 2. Hard disk drive 3. System board The system will not wake up from hibernation mode. 1. Keyboard (if control is from the keyboard) 2. Hard disk drive 3. System board The system will not enter suspend mode after closing the LCD. 1. Lid switch 2. System board ThinkPad 390E 45

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Symptom/Error
FRU/Action in Sequence
The system will not
power on.
1.
Battery ASM
2.
AC Adapter
3.
DC/DC & Charger board ASM
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 ASM
3.
System board
Battery can't be
charged.
±
Battery
±
DC/DC & Charger board ASM
±
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.
Keyboard (if control is from
the keyboard)
2.
Hard disk drive
3.
System board
The system will not
wake up from
hibernation mode.
1.
Keyboard (if control is from
the keyboard)
2.
Hard disk drive
3.
System board
The system will not
enter suspend mode
after closing the LCD.
1.
Lid switch
2.
System board
ThinkPad 390E
45