The 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.
All ThinkPad 240 computers which have the last five alphanumeric characters: "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.
All ThinkPad 240 computers which have the last five letters: "ZAAAA" to "ZZZZZ" are fitted with Type B panels.
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.

LCD - Type B - FPC Asm

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