Lenovo 28479UU Hardware Maintenance Manual - Page 99
System board assembly, Important notices for handling the system board, Diagnostics
 |
View all Lenovo 28479UU manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 99 highlights
Step 1 2 Screw (quantity) M2 × 3 mm, wafer-head, nylon-coated (2) M2 × 5 mm, wafer-head, nylon-coated (4) Color Black Black Torque 0.181 Nm (1.85 kgfcm) 0.181 Nm (1.85 kgfcm) 1200 System board assembly • To identify the system board originally installed in your computer, go to PEW at the following web site: http://www.lenovo.com/support/site.wss/document.do?lndocid=LOOK-WARNTY Select Warranty Lookup. Input the machine type and the serial number. Use the system board listed on PEW. • Business Partners using Eclaim can access PEW at the following web site: https://wca.eclaim.com Select Entitlement Lookup. Input the Loc ID, the machine type, and the serial number. Use the system board listed on PEW. Important notices for handling the system board: When handling the system board, bear the following in mind. • The system board has an accelerometer, which can be broken if several thousands of G-forces are applied. Note: Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench can subject the accelerometer to as much as 6,000 G's of shock. • Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite. • If a system board is dropped, you must test it, using PC-Doctor for DOS, to make sure that the HDD Active Protection System™ still functions. Note: If the test shows that the HDD Active Protection System is not functioning, be sure to document the drop in a reject report, and replace the system board. • Avoid rough handling of any kind. • At every point in the process, be sure not to drop or stack the system board. • If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated conductive surface. After replacing the system board, run PC-Doctor for DOS to make sure that the HDD Active Protection System still functions. The procedure is as follows: 1. Place the computer on a horizontal surface. 2. Run Diagnostics ➙ ThinkPad Devices ➙ HDD Active Protection Test. Attention: Do not apply physical shock to the computer while the test is running. For access, remove these FRUs in order: • "1010 Battery pack" on page 61 • "1020 ExpressCard blank bezel and Media Card blank bezel" on page 63 • "1030 Optical drive or travel cover" on page 64 • "1040 Thermal cover" on page 65 • "1050 Hard disk drive (HDD) assembly" on page 66 • "1060 DIMM" on page 67 • "1070 Fan assembly" on page 68 • "1080 CPU" on page 71 Chapter 8. Removing and replacing a FRU 93
-
1 -
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
-
21
-
22
-
23
-
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
51
-
52
-
53
-
54
-
55
-
56
-
57
-
58
-
59
-
60
-
61
-
62
-
63
-
64
-
65
-
66
-
67
-
68
-
69
-
70
-
71
-
72
-
73
-
74
-
75
-
76
-
77
-
78
-
79
-
80
-
81
-
82
-
83
-
84
-
85
-
86
-
87
-
88
-
89
-
90
-
91
-
92
-
93
-
94 -
95 -
96 -
97 -
98 -
99 -
100 -
101 -
102 -
103 -
104 -
105
-
106
-
107
-
108
-
109
-
110
-
111
-
112
-
113
-
114
-
115
-
116
-
117
-
118
-
119
-
120
-
121
-
122
-
123
-
124
-
125
-
126
-
127
-
128
-
129
-
130
-
131
-
132
-
133
-
134
-
135
-
136
-
137
-
138
-
139
-
140
-
141
-
142
-
143
-
144
-
145
-
146
-
147
-
148
-
149
-
150
-
151
-
152
-
153
-
154
-
155
-
156
-
157
-
158
-
159
-
160
-
161
-
162
-
163
-
164
-
165
-
166
-
167
-
168
-
169
-
170
-
171
-
172
-
173
-
174
-
175
-
176
-
177
 |
 |
