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Service Hints & Tips

Document ID: GSMH-3CAD5B

This document is provided to IBM and our Business Partners to help sell and/or service IBM products. It is not to be distributed beyond that audience or used for any other purpose.

TP General - N45SL FRU Removals and Replacements

Applicable to: World-Wide

FRU Removals and Replacements:
Follow the numerical sequence in the FRU removal sequence list and the exploded view to remove or disconnect parts in the correct order. The letters in parentheses in the list indicate screw types. See the -- 'Screw Chart Size' -- to match the letters to the correct screw type and size before replacing each screw.

Safety Notice 8:
Before removing any FRU, power-off the computer, unplug all power cords from electrical outlets, remove the battery pack, then disconnect any interconnecting cables.

Safety Notice 1:
Before the computer is powered-on after FRU replacement, make sure all screws, springs, or other small parts are in place and are not left loose inside the computer. Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical shorts.

1	Battery Pack
2	Three Screws (1-G, 2-J) (Two on bottom of cabinet near front, one inside battery compartment) Loosen Keyboard
3	Two Ribbon Cables and Remove Keyboard
4	Hinge Covers (Apply pressure to hinge cover sides and pull up.)
5	Memory Module Cover (Gently pry from rear.)
6	Three Screws (1-J, 2-WW) (One screw at each hinge and one at back edge under memory module cover.)
7	Three LCD Assembly Cables (These cables attach to underside of LCD assembly. Observe cable routing and place cables in same position when replacing top cover.)
8	Three Screws and LCD Assembly (Top cover is part of LCD assembly. Only part of LCD is shown. Long silver screws are located at front edge of LCD assembly.)
9	Two Screws (J) (At front edge of diskette drive)
10	Diskette Drive Ribbon Cable
11	Diskette Drive
12	Three Screws (J) (Move shielding aside. Do not crease shielding.)
13	Memory Module Expansion Card
14	Hard Disk Drive Ribbon Cable
15	Hard Disk Drive (One screw on cabinet bottom holds hard disk drive in place. Have customer backup hard disk drive before removing drive. Run Prep after installing new hard disk drive. )
16	Two Screws (J) (At each end of memory module support bracket)
17	Memory Module Support Bracket
18	Backup Battery, Battery Compartment Cables (Look for 18 twice in illustration.)
19	Two Screws (J) (At each end of DC to DC PCB Assembly)
20	DC to DC PCB Assembly (Lift front to unplug assembly from system board. Be careful not to damage or lose shielding.)
21	Modem Ribbon Cable
22	Three Modem Housing Screws (J) (Front right screw holds a black grounding cable down.)
23	Modem Housing Assembly
24	Mouse Cable
25	One System Board Screw (J)
26	Three System Board Threaded Hex Spacers
27	Cable
28	System Board (Transfer math coprocessor (if installed) to new system board.)
29	Backup Battery

Model N45 Exploded View:

	Search Keywords
	Hint Category	Hardware Maintenance Information
	Date Created	12-12-96
	Last Updated	01-05-98
	Revision Date	28-04-99
	Brand	IBM ThinkPad
	Product Family	Notebook N45
	Machine Type	2614
	Model	Various
	TypeModel
	Retain Tip (if applicable)	N/A
	Reverse Doclinks and Admin Purposes