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Service Hints & Tips

Document ID: BMOE-42EHTJ

TP 390,390E,1720 - Upper Cover ASM Removal

Applicable to: World-Wide

The following information is intended for IBM Dealers and Authorized Servicers only. Customers attempting to follow any of the procedures below may void their warranty.

• Battery ASM
• Hard Disk Drive
• Combo Bay
• Keyboard
• LED Board
• Upper Heatsink
• LCD Panel ASM

To remove the upper case:

1. Remove the screws from the upper cover ASM.

Step	Size (Quantity)	Head & Color	Torque
1	M2 x 4L (3)	Flat head, silver	1.6 kgf-cm
2	M2 x 18L (3)	Pan head, black	1.6 kgf-cm

Note: Make sure you use the correct screw for replacement.

2. Turn the notebook over. Then remove the 4 screws from the base cover.

Step	Size (Quantity)	Head & Color	Torque
3	M2.5 x 6L (1)	Flat head, black	2.0 kgf-cm
4	M2.5 x 18L (3)	Pan head, black	2.0 kgf-cm

Note: Make sure you use the correct screw for replacement.

3. Use a flat-bladed screwdriver to remove the latch.

4. Disconnect the cable from the main unit. Now you can remove the upper cover ASM from the base cover ASM.

	Search Keywords
	Hint Category	Hardware Installation/Configuration
	Date Created	20-11-98
	Last Updated	23-03-99
	Revision Date	23-03-2000
	Brand	IBM ThinkPad
	Product Family	ThinkPad 390, ThinkPad i Series 172x
	Machine Type	2626, 2627
	Model	Various
	TypeModel
	Retain Tip (if applicable)
	Reverse Doclinks and Admin Purposes