ThinkPad 240 Hardware
Maintenance Manual
About This Manual
This manual contains service and reference information for the IBM ThinkPad 240 products. Use this manual along
with the diagnostics tests to troubleshoot problems effec- tively.
There are two models of LCD panel used | with | the | ||||||
ThinkPad 240: | LCD Type | A and | LCD | Type B. | Check | the | ||
last | five letters | of | the | unit's | serial | number | you are servicing | |
to | determine | the | model. |
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LCD Type A:
All ThinkPad 240 computers that have serial numbers whose last fivealphanumeric charactersare "00001" to "YZZZZ" are fitted with Type A panels.
Note: The number range is from 00001 to 99999, and the letter range is from AAAAA to YZZZZ.
LCD Type B:
All ThinkPad 240 computers that | have | serial numbers |
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whose last fivelettersare "ZAAAA" to "ZZZZZ" | are fitted |
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with | Type | B | panels. |
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The | servicer | need | only | check | the | fifth | letter | from | the | end. | ||||
If | the | fifth | letter | from | the | end is | "0 — Y" (inclusive), then | |||||||
the | LCD panel | is | Type | A. If | the | fifth | letter | from | the | end is | ||||
"Z", | then | the | LCD | panel | is | Type | B. |
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The manual is divided into sections as follows:
ŸThe introduction section provides general information, guidelines, and safety information required to service computers.
ŸThe
This manual is intended for trained servicers who are familiar with ThinkPad products. Use this manual along with the PC Doctor to troubleshoot problems effectively.
Read This First
Before you go to the checkout guide, be sure to read this section.
Important | Notes | |
Ÿ | Only | certified trained personnel should service |
| the | computer. |
ŸRead the entire FRU service procedures before replacing any FRUs.
ThinkPad 2401