Lenovo ThinkPad T420 Support Question
Lenovo ThinkPad T420 Support Question
Find answers below for this question about Lenovo ThinkPad T420.Need a Lenovo ThinkPad T420 manual? We have 38 online manuals for this item!
Question posted by jmrmmrk on June 15th, 2014
How Do I Disable Thinkpad T420 Camera
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Related Lenovo ThinkPad T420 Manual Pages
Hardware Maintenance Manual - Page 1
ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 3
... underside of the system unit 62 Retaining the UUID 63 Reading or writing the ECA information . . . 63
Chapter 8. Removing and replacing a FRU 65
Before servicing ThinkPad T420 and T420i . . . 66 1010 Battery pack 67 1020 ExpressCard blank bezel 68 1030 Serial Ultrabay Enhanced device or travel bezel 69 1040 Hard disk drive...
Hardware Maintenance Manual - Page 4
...solid state drive 114 2010 LCD bezel assembly 116 2020 LED board 117 2030 Integrated camera 119 2040 LCD panel and LCD cable 121 2050 Camera cable 123 2060 Wireless LAN antenna assembly or wireless LAN/WAN antenna assembly 124 2070... Common service tools 173
Appendix A. Notices 175
Electronic emissions notices 176 Trademarks 177
ii ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 5
ThinkPad T420 and T420i Machine Type 4177, 4178, 4179, 4180, 4236, 4237, and 4238
Use this manual along with the advanced diagnostic tests to troubleshoot problems.
Important: This manual is intended only for the following ThinkPad® products.
Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a ThinkPad product...
Hardware Maintenance Manual - Page 6
iv ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 8
... one hand when working with very high voltages; keep the other hand in the safety sections of the units.
• If an electrical accident occurs:
2 ThinkPad T420 and T420i Hardware Maintenance Manual
Stand on electrical equipment; Instructions for possible hazards in the off the power, if necessary. - The surface is a complete circuit...
Hardware Maintenance Manual - Page 10
... the computer is especially useful when
handling ESD-sensitive devices. • Select a grounding system, such as fully effective. You can be verified by a certified electrician.
4 ThinkPad T420 and T420i Hardware Maintenance Manual Grounding requirements
Electrical grounding of a grounding system to guard against your skin to provide a static-free work surface. Attach the...
Hardware Maintenance Manual - Page 12
... FRU being replaced, do not remove the plastic cover that protects the lower part of the inverter card. Seek medical care if any interconnecting cables.
6 ThinkPad T420 and T420i Hardware Maintenance Manual DANGER Unless hot swap is allowed for at least 15 minutes. DANGER If the LCD breaks and the fluid from...
Hardware Maintenance Manual - Page 56
...blank, unreadable, or flashing LCD.
1.
Notes: • This policy applies to all ThinkPad Notebooks purchased on , and LCD blank during POST.
System board. System board (security chip...on 1 January, 2008 or later.
50 ThinkPad T420 and T420i Hardware Maintenance Manual The hard-disk password prompt appears. A hard-disk password is disabled. System board.
1.
Beep symptoms
Table ...
Hardware Maintenance Manual - Page 130
... LCD cable" on page 121 • "2050 Camera cable" on page 123
Removal steps of wireless LAN antenna assembly or wireless LAN/WAN antenna assembly
2
2
2
2
1
1
1 1
1
1 1
1
When installing: When you route the cables, make sure that they are not subjected to be broken.
124 ThinkPad T420 and T420i Hardware Maintenance Manual 2060 Wireless LAN...
Hardware Maintenance Manual - Page 132
Torque
0.392 Nm (4.0 kgfcm)
126 ThinkPad T420 and T420i Hardware Maintenance Manual
2070 Hinges and LCD rear cover assembly
For access, remove these ...page 116 • "2020 LED board" on page 117 • "2030 Integrated camera" on page 119 • "2040 LCD panel and LCD cable" on page 121 • "2050 Camera cable" on page 123 • "2060 Wireless LAN antenna assembly or wireless LAN/WAN...
Hardware Maintenance Manual - Page 135
Front view
1
Integrated camera (for some models)
2
ThinkLight
3
Built-in microphone
4
Built-in speakers
5
Security keyhole
...
18
Volume control buttons
19
ThinkVantage button
20
Power switch
21
Status indicators
Note: For the description of ThinkPad T420 and T420i hardware components.
Locations
This chapter presents the locations of each indicator, see Chapter 5 "Status ...
Hardware Maintenance Manual - Page 164
...CTO
4 Hinges
04W1610 04W1612 04W1611
5 Wireless antenna set
04W1615 04W1616
6 LCD rear cover assembly
04W1608
7 LED cable with camera bracket
04W1619
8 LCD cable (for 14.0-inch HD LCD module)
04W1617
• 4177-CTO, 22x, 23x, 24x,..., MRx, MSx, MYx, MZx, N2x, N5x, N7x, N8x,
CRU ID
N
N N N N
158 ThinkPad T420 and T420i Hardware Maintenance Manual Parts list-LCD FRUs (continued) No.
(English) User Guide - Page 20
... computer by this method, press and hold the power switch for 2 seconds.
2 User Guide ThinkPad T420/T420i front view
1 Computer display 3 Fingerprint reader 5 TrackPoint pointing stick 7 System and power-status...and graphics. For details, refer to the instructions in stereo speaker (left ) 10 Integrated camera 12 Built-in microphone (right) 14 Built-in "Changing display settings" on page 69.
...
(English) User Guide - Page 23
Right-side view
Figure 2.
Chapter 1. Product Overview 5
ThinkPad T420/T420i right-side view
1 Security keyhole 3 eSATA/USB combo connector 5 Media ...computer has the ExpressCard slot for connecting devices compatible with a USB interface, such as a printer or a digital camera. You can purchase a security cable and lock to this keyhole.
2 USB connector The Universal Serial Bus connector...
(English) User Guide - Page 26
... Universal Serial Bus connectors are used for connecting devices compatible with a USB interface, such as a printer or a digital camera. Two indicators, to the instructions in "Using the media card reader" on page 20. ThinkPad T420/T420i bottom view
8 User Guide When your computer. 5 USB connector (left indicator blinks yellow. Bottom view
Figure 4. For...
(English) User Guide - Page 28
...Power Manager program. Note: Your computer is used for connecting devices compatible with a USB interface, such as a printer or a digital camera. ThinkPad T420/T420i rear view.
1 Modem connector or IEEE 1394 3 Power jack
2 Always On USB connector (rear) 4 Fan louvers (rear)
..., by attaching the devices to charge some devices, such as digital video cameras and external hard disk drives.
(English) User Guide - Page 208
... Port Memory Card Slot
• Disabled • Enabled
• Disabled • Enabled • Disabled • Enabled • Disabled • Enabled
• Disabled • Enabled
• Disabled • Enabled
• Disabled • Enabled • Disabled • Enabled
Integrated Camera Microphone
• Disabled • Enabled
• Disabled • Enabled
Anti-Theft...
(Traditional Chinese) User Guide - Page 177
... Enhanced 裝置。
Hardware Password Manager Enabled。
Lock UEFI BIOS Settings ThinkPad Setup Disabled ThinkPad Setup
Set Minimum Length Disabled
Password at unattended boot Wake on LAN Disabled
Password at restart Disabled
Startup 功能表
BitLocker BitLocker
Startup 以顯示 Boot
1. 選取...
(Japanese) User Guide - Page 202
... Enhanced
「Hardware Password Manager Enabled」です。
「Lock UEFI BIOS Settings ThinkPad Setup Disabled ThinkPad Setup
「Set Minimum Length Disabled Set Minimum Length
「Password at unattended boot Wake On LAN ThinkPad Disabled ThinkPad
「Password at restart Disabled ThinkPad
「Startup
ThinkPad ThinkPad
184
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