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Service Hints & Tips

Document ID: PFAN-3VWQQC

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TP 380E/ED,385ED - system sometimes shuts down or fails to boot after installing new memory

Applicable to: World-Wide

SYMPTOM:
System intermittently fails to boot when turned on, or shuts down unexpectedly after Memory DIMM has been installed or replaced.

SOLUTION:
A very small number of 380E, 380ED and 385ED systems are sensitive to variation in Memory Chip timings. The system must be serviced to insure latest level planar board and DC/DC card are installed.
Note: This will be a very intermittent fail; many DIMM cards will not cause this problem. The system will not display any activity on LCD as power never comes up or is shut off completely. This is NOT related to any operating system or application fail that might cause the system to "HANG".

ADDITIONAL INFORMATION:
both DC-DC card and Planar must be replaced. In many case planar will already be at newer level.

New FRU

Old FRU

DC/DC Card

10L1550

73H9928

Planar

P150

10L1554

10L1503

150MMX

10L1555

10L1504

166MMX

10L1556

10L1505



Search Keywords

Hint Category

Memory

Date Created

29-06-98

Last Updated

30-06-98

Revision Date

29-06-99

Brand

IBM ThinkPad

Product Family

ThinkPad 380E, ThinkPad 380ED, ThinkPad 385ED

Machine Type

2635

Model

Various

TypeModel

Retain Tip (if applicable)

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