Lenovo G50 Manitenance Manual

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Lenovo G50-70/G50-70m/Z50-70
Figure 4. Removal steps of hard disk drive (continued)
Remove	the	screws	3	and	detach	the	metal	frame	from	the	hard	disk	drive.	



StepScrew (quantity)ColorTorque
3M3	×	3	mm,	flat-head,	nylok-coated	(4)		HDD	BKT	+	HDDWhite2.5	~	3.0	kgf*cm 
						

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G50-70/G50-70m/Z50-70 Hardware Maintenance Manual
1050 PCI Express Mini Card for wireless LAN
For	access,	remove	these	FRUs	in	order:
•	“1010	Battery	pack”	on	page	32•	“1020	Base	cover”	on	page	33
Figure 5. Removal steps of PCI Express Mini Card for wireless LAN
Disconnect	the	two	 wireless	 LAN	cables	 (black,	 grey)	1,	and	 then	remove	 the	screw	2.


In	step	1,	 unplug	 the	jacks 	by 	using	 the	removal	 tool	antenna	 RF	connector 		
(P/N:	08K7159),	 or	pick	 up	the	 connectors	 with	your	 fingers	 and	gently	 unplug	them	in	the	direction	shown	by	the	arrows.
Notes:	The	wireless	LAN	card	has	2	cables	in	step	1.
	 The	wireless	LAN	card	in	some	models	might	have	3	cables	in	step	1.
StepScrew (quantity)ColorTorque
2M2	×	3.5	mm,	flat-head,	nylok-coated	(1)		WLAN	card	+	MBBlack1.5	~	2.0	kgf*cm 
						

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Lenovo G50-70/G50-70m/Z50-70
Figure 5. Removal steps of PCI Express Mini Card for wireless LAN (continued)	
Remove	the	card	in	the	direction	shown	by	arrow	3.

When installing:
•	In	models	 with	a	wireless	 LAN	card	 that	has	two	antenna	 connectors,	 plug	the	black	 cable	 (1st)	(MAIN)	 into	the	jack	 labeled	MAIN,	and	 the	grey	 cable	(2nd)	(AUX)	into	the	jack	labeled	AUX	on	the	card.	
•	In	models	 with	a	wireless	 LAN	card	that	has	three	 antenna	 connectors,	 plug	the	black	 cable	 (1st)	(MAIN)	 into	the	jack	 labeled	1,	the	 grey	 cable	 (3rd)	into	the	jack	 labeled	3,	and	 the	white	 cable	 (2nd)	(AUX)	 into	the	jack	 labeled	2	on	the	card. 
						

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G50-70/G50-70m/Z50-70 Hardware Maintenance Manual
1060 DIMM
For	access,	remove	these	FRUs	in	order:	
•	“1010	Battery	pack”	on	page	32•	“1020	Base	cover”	on	page	33
Figure 6. Removal steps of DIMM 
Release	the	 two	latches	 on	both 	edges	 of	the	 socket	 at	the	 same	 time	in	 the 	directions	 shown	by	arrows	1,	and	 then	 unplug	 the	DIMM	 in	the	 direction 	shown	by	arrow	2.


When installing:	Insert	 the	notched	 end	of	the	 DIMM	 into	the	socket.	 Push	the	DIMM	firmly,	and	 pivot	it	until	it	snaps	into	place.	 Make	sure	 that	it	is	firmly	fixed	in	the	slot	and	is	difficult	to	move. 
						

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Lenovo G50-70/G50-70m/Z50-70
1070 Fan assembly
For	access,	remove	these	FRUs	in	order:	
•	“1010	Battery	pack”	on	page	32•	“1020	Base	cover”	on	page	33
Figure 7. Removal steps of fan assembly 
Unplug	the	fan	connector	 in	the	 direction	 shown	by	arrow	1.	Then	 remove	 the	screws	2.



Note:	Be	careful	not	to	damage	the	connector.
StepScrew (quantity)ColorTorque
2M2	×	6	mm,	flat-head,	nylok-coated	(3)		Fan	+	MBBlack1.5	~	2.0	kgf*cm
When installing:	Make	sure	that	the	connector	is	attached	firmly. 
						

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G50-70/G50-70m/Z50-70 Hardware Maintenance Manual
Figure 7. Removal steps of fan assembly (continued) 
Remove	the	fan	3.
 
						

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Lenovo G50-70/G50-70m/Z50-70
1080 Keyboard
For	access,	remove	these	FRUs	in	order:
•	“1010	Battery	pack”	on	page	32
•	“1020	Base	cover”	on	page	33
•	“1040	Hard	disk	drive”	on	page	36
•	“1050	PCI	Express	Mini	Card	for	wireless	LAN”	on	page	38
•	“1060	DIMM”	on	page	40
•	“1070	Fan	assembly”	on	page	41
Figure 8. Removal steps of keyboard
Remove	the	screws	1.


StepScrew (quantity)ColorTorque
1M2	×	6	mm,	flat-head,	nylok-coated	(3)		KB	+	DBlack1.5	~	2.0	kgf*cm 
						

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G50-70/G50-70m/Z50-70 Hardware Maintenance Manual
Figure 8. Removal steps of keyboard (continued) 
Insert	the	screwdriver	into	the	bottom	hole	2.	Then	pull	the	keyboard	out	of	the	keyboard	bezel	3.	
 
						

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Lenovo G50-70/G50-70m/Z50-70
Figure 8. Removal steps of keyboard (continued) 
Lift	the	 keyboard	 slightly	4.	Detach	 the	connectors	 in	the	 directions	 shown	by	arrows	5	and	6.	Then	remove	the	keyboard.



When installing:	Make	sure	that	the	FPC	connector	is	attached	firmly.	 
						

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G50-70/G50-70m/Z50-70 Hardware Maintenance Manual
1090 Keyboard bezel
For	access,	remove	these	FRUs	in	order:
•	“1010	Battery	pack”	on	page	32
•	“1020	Base	cover”	on	page	33
•	“1030	Optical	drive”	on	page	35
•	“1040	Hard	disk	drive”	on	page	36
•	“1050	PCI	Express	Mini	Card	for	wireless	LAN”	on	page	38
•	“1060	DIMM”	on	page	40
•	“1070	Fan	assembly”	on	page	41
•	“1080	Keyboard”	on	page	43
Figure 9. Removal steps of keyboard bezel
Remove	the	screws	1	and	2.









StepScrew (quantity)ColorTorque
1M2.5	×	6	mm,	flat-head,	nylok-coated	(8)	D	+	CBlack2.5	~	3.0	kgf*cm
2M2	×	6	mm,	flat-head,	nylok-coated	(2)		D	+	CBlack1.5	~	2.0	kgf*cm