![Lenovo 019727U Hardware Maintenance Manual Download Page 5](http://html.mh-extra.com/html/lenovo/019727u/019727u_hardware-maintenance-manual_201282005.webp)
Contents
About this manual . . . . . . . . . . v
Safety information . . . . . . . . . . 1
General safety .
.
.
.
.
.
.
.
.
.
.
.
.
. 2
Electrical safety
.
.
.
.
.
.
.
.
.
.
.
.
. 3
Safety inspection guide .
.
.
.
.
.
.
.
.
.
. 5
Handling devices that are sensitive to electrostatic
discharge
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 6
Grounding requirements .
.
.
.
.
.
.
.
.
. 6
Safety notices (multilingual translations) .
.
.
.
. 7
Laser compliance statement (multilingual
translations) .
.
.
.
.
.
.
.
.
.
.
.
.
. 28
Important service information . . . . . 39
Strategy for replacing FRUs .
.
.
.
.
.
.
.
. 39
Strategy for replacing a hard disk drive .
.
.
. 40
Important notice for replacing a system board .
. 40
How to use error message
.
.
.
.
.
.
.
. 40
Strategy for replacing FRUs for CTO, CMV, and
GAV.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 41
Product definition .
.
.
.
.
.
.
.
.
.
. 41
FRU identification for CTO, CMV, and GAV
products .
.
.
.
.
.
.
.
.
.
.
.
.
. 41
General checkout . . . . . . . . . . 43
What to do first .
.
.
.
.
.
.
.
.
.
.
.
. 44
Checkout guide .
.
.
.
.
.
.
.
.
.
.
.
. 45
Diagnostics using PC-Doctor for DOS
.
.
.
. 45
Lenovo System Toolbox .
.
.
.
.
.
.
.
. 48
PC-Doctor for Rescue and Recovery .
.
.
.
. 48
FRU tests .
.
.
.
.
.
.
.
.
.
.
.
.
. 48
Power system checkout .
.
.
.
.
.
.
.
.
. 51
Checking the AC adapter .
.
.
.
.
.
.
.
. 51
Checking operational charging .
.
.
.
.
.
. 52
Checking the battery pack
.
.
.
.
.
.
.
. 52
Checking the backup battery
.
.
.
.
.
.
. 53
Related service information . . . . . . 55
Restoring the factory contents by using Product
Recovery discs .
.
.
.
.
.
.
.
.
.
.
.
. 55
Passwords .
.
.
.
.
.
.
.
.
.
.
.
.
.
. 56
Power-on password
.
.
.
.
.
.
.
.
.
. 56
Hard-disk password
.
.
.
.
.
.
.
.
.
. 56
Supervisor password .
.
.
.
.
.
.
.
.
. 56
How to remove the power-on password .
.
.
. 57
How to remove the hard-disk password .
.
.
. 57
Power management
.
.
.
.
.
.
.
.
.
.
. 59
Screen blank mode .
.
.
.
.
.
.
.
.
.
. 59
Standby mode
.
.
.
.
.
.
.
.
.
.
.
. 59
Hibernation mode .
.
.
.
.
.
.
.
.
.
. 60
Symptom-to-FRU index .
.
.
.
.
.
.
.
.
. 61
Numeric error codes .
.
.
.
.
.
.
.
.
. 61
Error messages .
.
.
.
.
.
.
.
.
.
.
. 65
Beep symptoms .
.
.
.
.
.
.
.
.
.
.
. 66
No-beep symptoms .
.
.
.
.
.
.
.
.
.
. 66
LCD-related symptoms
.
.
.
.
.
.
.
.
. 67
Intermittent problems .
.
.
.
.
.
.
.
.
. 68
Undetermined problems .
.
.
.
.
.
.
.
. 68
Specifications. . . . . . . . . . . . 69
Status indicators . . . . . . . . . . 71
Fn key combinations
. . . . . . . . 75
FRU replacement notices . . . . . . . 77
Screw notices .
.
.
.
.
.
.
.
.
.
.
.
.
. 77
Retaining serial numbers .
.
.
.
.
.
.
.
.
. 78
Restoring the serial number of the system unit
78
Retaining the UUID
.
.
.
.
.
.
.
.
.
. 78
Reading or writing the ECA information
.
.
. 79
Removing and replacing a FRU . . . . 81
Before servicing ThinkPad T400s .
.
.
.
.
.
. 82
1010 Battery pack .
.
.
.
.
.
.
.
.
.
.
. 83
1020 Ultrabay Slim Media Bay device or travel bezel 84
1030 Solid state drive (SSD) or hard disk drive
(HDD) .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 85
1040 DIMM .
.
.
.
.
.
.
.
.
.
.
.
.
. 87
1050 PCI Express Mini Card for wireless LAN .
.
. 89
1060 PCI Express Mini Card for wireless WAN
.
. 92
1070 Keyboard .
.
.
.
.
.
.
.
.
.
.
.
. 95
1080 Backup battery .
.
.
.
.
.
.
.
.
.
. 100
1090 Wireless USB adapter or Intel Turbo Memory
101
1100 Palm rest or palm rest with fingerprint reader 103
1110
Bluetooth
daughter card (BDC-2) .
.
.
.
. 105
1120 Keyboard bezel and speaker assembly .
.
. 106
1130 5-in-1 Media Card Reader adapter.
.
.
.
. 110
1140
Bluetooth
–wireless radio switch FPC .
.
.
. 111
1150 LCD unit .
.
.
.
.
.
.
.
.
.
.
.
. 113
1160 System board, fan assembly, and 34-mm
ExpressCard slot frame .
.
.
.
.
.
.
.
.
. 117
1170 I/O sub card and base cover assembly .
.
. 123
2010 LCD bezel assembly .
.
.
.
.
.
.
.
. 125
2020 LCD latch L and R .
.
.
.
.
.
.
.
.
. 127
2030 Integrated camera or microphone sub card
128
2040 LED sub card
.
.
.
.
.
.
.
.
.
.
. 130
2050 LCD panel
.
.
.
.
.
.
.
.
.
.
.
. 131
2060 LCD cable.
.
.
.
.
.
.
.
.
.
.
.
. 134
2070 Hinge kit .
.
.
.
.
.
.
.
.
.
.
.
. 135
2080 LED cable .
.
.
.
.
.
.
.
.
.
.
.
. 137
2090 Antenna kit and LCD rear cover assembly
139
Locations . . . . . . . . . . . . . 141
Front view .
.
.
.
.
.
.
.
.
.
.
.
.
. 141
Rear view
.
.
.
.
.
.
.
.
.
.
.
.
.
. 142
Bottom view.
.
.
.
.
.
.
.
.
.
.
.
.
. 143
© Copyright Lenovo 2009
iii
Summary of Contents for 019727U
Page 1: ...ThinkPad T400s Hardware Maintenance Manual ...
Page 2: ......
Page 3: ...ThinkPad T400s Hardware Maintenance Manual ...
Page 8: ...vi ThinkPad T400s Hardware Maintenance Manual ...
Page 18: ...10 ThinkPad T400s Hardware Maintenance Manual ...
Page 19: ...Safety information 11 ...
Page 26: ...18 ThinkPad T400s Hardware Maintenance Manual ...
Page 27: ...Safety information 19 ...
Page 28: ...20 ThinkPad T400s Hardware Maintenance Manual ...
Page 29: ...Safety information 21 ...
Page 30: ...22 ThinkPad T400s Hardware Maintenance Manual ...
Page 31: ...Safety information 23 ...
Page 34: ...26 ThinkPad T400s Hardware Maintenance Manual ...
Page 35: ...Safety information 27 ...
Page 37: ...Safety information 29 ...
Page 41: ...Safety information 33 ...
Page 42: ...34 ThinkPad T400s Hardware Maintenance Manual ...
Page 43: ...Safety information 35 ...
Page 45: ...Safety information 37 ...
Page 46: ...38 ThinkPad T400s Hardware Maintenance Manual ...
Page 62: ...54 ThinkPad T400s Hardware Maintenance Manual ...
Page 82: ...74 ThinkPad T400s Hardware Maintenance Manual ...
Page 88: ...80 ThinkPad T400s Hardware Maintenance Manual ...
Page 152: ...144 ThinkPad T400s Hardware Maintenance Manual ...
Page 164: ...LCD FRUs 1 2 3 4 7 5 6 8 9 10 11 156 ThinkPad T400s Hardware Maintenance Manual ...
Page 180: ...172 ThinkPad T400s Hardware Maintenance Manual ...
Page 183: ......