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 delove on May 16th, 2014
T420 Memory Does It Work With A T430
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Related Lenovo ThinkPad T420 Manual Pages
ThinkPad Gobi Mobile Broadband Wireless WAN (L420, L421, L520, T420s, T420si, T430s, T430si) - Page 2
ThinkPad is a registered trademark of Lenovo.
0 A3 3 6 2 6 ThinkPad® Mobile Broadband (T420s, T420si, T430s, and T430si)
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AUX(Blue)
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http://www.lenovo.com/support/wireless
© Lenovo 2012.
ThinkPad Gobi Mobile Broadband Wireless WAN (T420, T420i, T430, T430i, T520, T520i, T530, T530i, W520, W530) - Page 1
ThinkPad® Mobile Broadband (T420, T420i, T430, and T430i)
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http://www.lenovo.com/support/wireless
(English) BIOS Setup using Windows Management Instrumentation Deployment Guide - Page 10
...Common interface for different products
Supported computers
BIOS setup through WMI is supported on the following ThinkPad products only: • R400, R500, T400, T500, W500, X200, X200s, X200... X201, X201s, T410, T410s, T510, W510 • T420, T420i, T420s, T420si, T520, T520i, W520, X220, X220i, X220 Tablet, X220i Tablet • X1 • T430, T430s, T430si, T530, W530 • X230, X230i, X230...
(English) BIOS Setup using Windows Management Instrumentation Deployment Guide - Page 13
..."4", "5", "6", "7", "9", "10", "11" "Disable", "Auto Select", "3", "4", "5", "6", "7", "9", "10", "11"
Load default? T400s 5 - T420, T420i, T420s, T420si, T520, T520i, W520, X220, X220i, X220 Tablet, X220i Tablet 7 - W700, W700ds, W701 4 - X1 Carbon
Table 4. N N Y
Supported... R400, R500, T400, T500, W500, X200, X200s, X200 Tablet 2 - X301 3 - T430, T430s, T430si, T530, W530 9 -
Hardware Maintenance Manual - Page 1
ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 3
.... . 27
What to electrostatic discharge 3 Grounding requirements 4 Safety notices (multilingual translations 5 Laser compliance statement (multilingual translations 17
Chapter 2. 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
... or wireless LAN/WAN antenna assembly 124 2070 Hinges and LCD rear cover assembly . . . 126
Chapter 9. Notices 175
Electronic emissions notices 176 Trademarks 177
ii ThinkPad T420 and T420i Hardware Maintenance Manual Parts list 133
Overall 134 LCD FRUs 155 Keyboard 160 Miscellaneous parts 162 Information about ac power adapters 164 Power...
Hardware Maintenance Manual - Page 5
ThinkPad T420 and T420i Machine Type 4177, 4178, 4179, 4180, 4236, 4237, and 4238... "Important service information" on page 23.
© Copyright Lenovo 2012
iii Before servicing a ThinkPad product, be sure to troubleshoot problems effectively. About this manual along with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems.
Important: This ...
Hardware Maintenance Manual - Page 6
iv ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 8
...shock can then operate the switch or unplug the power cord quickly.
• Do not work area. Use extreme care when measuring high voltages.
• Regularly inspect and maintain your body...power before: - Examples of the units.
• If an electrical accident occurs:
2 ThinkPad T420 and T420i Hardware Maintenance Manual Similar units to insulate you may prevent a current from passing...
Hardware Maintenance Manual - Page 10
... that meets the specific
service requirement. You can be verified by a certified electrician.
4 ThinkPad T420 and T420i Hardware Maintenance Manual Make sure that the ESD protective devices you are inserted into ... of a grounding system to guard against your skin to provide a static-free work mat to eliminate static on ac-operated computers. Notes: 1. Use product-specific ESD procedures when they...
Hardware Maintenance Manual - Page 12
Seek medical care if any symptoms from electrical outlets, remove the battery pack, and disconnect any interconnecting cables.
6 ThinkPad T420 and T420i Hardware Maintenance Manual DANGER Though the main batteries have low voltage, a shorted or grounded battery can produce enough current to burn personnel or ...
Hardware Maintenance Manual - Page 20
14 ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 24
18 ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 26
20 ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 32
... the MT Model level) • eSupport can be accessed at the MT Model level.
26 ThinkPad T420 and T420i Hardware Maintenance Manual Click the Parts Detail tab to view the list of FRUs at the...view the key commodities, do the following : 1. hard disk drive, system board, microprocessor, LCD, and memory) Use the HMM as a back-up to PEW and eSupport to view the complete list of service parts....
Hardware Maintenance Manual - Page 34
...by spilling a liquid onto the keyboard • Use of an incorrect ac power adapter on laptop products
The following symptoms might indicate that the system was caused by misuse, accident, modification, ... costs if the computer damage was subjected to excessive force,
or dropped.
28 ThinkPad T420 and T420i Hardware Maintenance Manual Date of some symptoms that might indicate damage caused by...
Hardware Maintenance Manual - Page 36
... be sensed.
30 ThinkPad T420 and T420i Hardware Maintenance Manual Press ENTER to enter the Boot Menu. 5.
Turn on the screen. 8. When the ThinkPad logo comes up, immediately...Interactive Tests
• Run Normal Test • Run Quick Test • CPU/Coprocessor • System Memory • Systemboard • Video Adapter • Fixed Disks • Diskette Drives • Other Devices...
Hardware Maintenance Manual - Page 40
...test memory and internal storage problems, view system information, and check and recover bad sectors on the computer.
To run a quick test using the downloaded program, do the following:
34 ThinkPad T420 ... only on the screen. Quick test programs
Lenovo Hard Drive Quick Test and Lenovo Memory Quick Test are applicable to troubleshoot the problem. To download and install a quick ...
Hardware Maintenance Manual - Page 64
This function does not work while a DVD movie or a video clip is loaded after sleep (standby), hibernation, reboot, or detaching or attaching... attached, computer output is loaded after Fn+F12 are displayed on the computer.
Enable the Full Screen Magnifier function.
58 ThinkPad T420 and T420i Hardware Maintenance Manual Fn+F8 Fn+F9 Fn+F10 Fn+F11 Fn+F12
Note: Multiple users can log on ...
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