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Indicator-Related Symptoms
Symptom/Error FRU/Action in Sequence
Indicator
incorrectly
remains off or
on, but system
runs correctly
1. Reseat the Audio connector
board.
2. Audio connector board
3. System board
Power-Related Symptoms
Symptom/Error FRU/Action in Sequence
Power shuts
down during
operation.
1. Go to “Power System Checkout”
on page 8.
2. AC Adapter
3. Battery Pack
4. Battery connector board
5. Charger board
6. System board
The system will
not power-on.
1. Go to “Power System Checkout”
on page 8.
2. AC Adapter
3. Charger board
4. System board
The system will
not power-off.
1. Go to “Power System Checkout”
on page 8.
2. Press the power shutdown switch
for more than 3 seconds.
3. Charger board
4. System board
Battery cannot
be charged.
1. Go to “Power System Checkout”
on page 8.
2. Battery
3. Charger board
4. 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
PCMCIA slot pin
is damaged.
PC Card (PCMCIA) slots assembly
Memory-Related Symptoms
Symptom/Error FRU/Action in Sequence
Memory count
(size) appears
different from
actual size.
1. Go to “Memory Checkout” on
page 4.
2. Enter BIOS Utility to execute Load
Setup Default Settings, then
reboot system.
3. DIMM
4. System board
20 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM