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 salchef on June 15th, 2014
Thinkpad T420 Audio Is Disabled When Docked
The person who posted this question about this Lenovo product did not include a detailed explanation. Please use the "Request More Information" button to the right if more details would help you to answer this question.
Current Answers
Related Lenovo ThinkPad T420 Manual Pages
Hardware Maintenance Manual - Page 1
ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 3
... Toolbox program and the PC-Doctor for CTO, CMV, and GAV products 25
Chapter 3. Status indicators . . . . . 53
Chapter 6. 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
... tools 173
Appendix A. Locations 129
Front view 129 Rear view 131 Bottom view 132
Chapter 10. Notices 175
Electronic emissions notices 176 Trademarks 177
ii ThinkPad T420 and T420i Hardware Maintenance Manual 1150 Speaker assembly 95 1160 LCD unit 97 1170 Fan assembly 101 1180 CPU 105 1190 Base cover assembly and...
Hardware Maintenance Manual - Page 5
... trained service technicians who are familiar with the advanced diagnostic tests to troubleshoot problems effectively. ThinkPad T420 and T420i Machine Type 4177, 4178, 4179, 4180, 4236, 4237, and 4238
Use this manual along with ThinkPad products.
Before servicing a ThinkPad product, be sure to troubleshoot problems.
Important: This manual is intended only for the following...
Hardware Maintenance Manual - Page 6
iv ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 52
... satisfied in the boot record on , the computer returns from the hard disk drive.
46 ThinkPad T420 and T420i Hardware Maintenance Manual If you do undock it and then try to resume normal operation...will have defined one of the following actions as the event that causes the system to the docking station, do any operation with the keyboard, the TrackPoint, the hard disk drive, the parallel ...
Hardware Maintenance Manual - Page 54
...ThinkPad Notebook on HDD2 (Mini SATA)
2200 Machine Type and Serial Number are invalid. 2201 Machine UUID is attached to the computer.
3. System board.
1. Reseat the Mini SATA device. 2. Reseat the Mini SATA device. 2.
Undock docking... the ThinkPad Setup program, and then save the current setting by connecting the ac power adapter.
2. System board.
48 ThinkPad T420 and ...
Hardware Maintenance Manual - Page 56
...symptoms
Symptom or error
FRU or action, in the ThinkPad Setup program is set .
One long and two short...ThinkPad T420 and T420i Hardware Maintenance Manual LCD-related symptoms
Important: The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). Notes: • This policy applies to all ThinkPad Notebooks purchased on password or a supervisor password is disabled...
Hardware Maintenance Manual - Page 58
... operating, follow these procedures to do the following: 1. Printer, mouse, and other external devices d. LCD assembly
52 ThinkPad T420 and T420i Hardware Maintenance Manual If any damaged FRU. 3.
Intermittent problems
Intermittent system hang problems can be considered only when...are supported by the FRU code. Rerun the test to the docking station or the port replicator c.
Hardware Maintenance Manual - Page 135
... drive or travel bezel
11
Combo audio jack
12
Fingerprint reader
13
Touch pad buttons
14
Touch pad
15
TrackPoint buttons
16
TrackPoint pointing stick
17
UltraNav
18
Volume control buttons
19
ThinkVantage button
20
Power switch
21
Status indicators
Note: For the description of ThinkPad T420 and T420i hardware components. Chapter 9. Locations...
Hardware Maintenance Manual - Page 138
Bottom view
1
Battery pack
2
Battery pack latch
3
DIMM slot
4
Docking connector
5
LCD cover latch
6
Serial Ultrabay Enhanced lock latch
7
Serial Ultrabay Enhanced eject latch
7 6
1 2
3 4
5
132 ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 146
...-CTO • 4180-CTO, LPx, LQx • 4236-CTO, NEx, NDx • 4237-CTO • 4238-CTO
60Y5512
9 Audio sub card • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO..., NFx, NGx, NHx, NKx, NLx, NMx, NNx, NPx, NQx, NRx, NSx, NTx,
CRU ID *
N
N
N N
140 ThinkPad T420 and T420i Hardware Maintenance Manual Parts list-Overall (continued)
No.
(English) User Guide - Page 23
... can purchase a security cable and lock to fit this connector on some models. ThinkPad T420/T420i right-side view
1 Security keyhole 3 eSATA/USB combo connector 5 Media card reader slot 7 Serial Ultrabay enhanced
2 USB connector 4 ExpressCard slot 6 Wireless radio switch 8 Combo audio jack
1 Security keyhole Your computer comes with USB 1.1 and 2.0.
Note: To avoid...
(English) User Guide - Page 25
... computer information. Chapter 1. ThinkPad T420/T420i left-side view
1...ThinkPad Port Replicator Series 3, ThinkPad Mini Dock Series 3, ThinkPad Mini Dock Plus Series 3, and ThinkPad Mini Dock Plus Series 3 (170 W) and use a monitor connector, use the monitor connector on the ThinkPad Port Replicator Series 3, ThinkPad Mini Dock Series 3, ThinkPad Mini Dock Plus Series 3, and ThinkPad Mini Dock...
(English) User Guide - Page 26
... Mini Dock Series 3, ThinkPad Mini Dock Plus Series 3, and ThinkPad Mini Dock Plus Series 3 (170 W), not the one on the computer. 4 DisplayPort connector Your computer supports the DisplayPort, a next-generation digital display interface that connects a compatible projector, external monitor, or HDTV to your computer connects to the lower right and left indicator blinks yellow. ThinkPad T420...
(English) User Guide - Page 202
... select "On", NumLock is always enabled.
Select the display device that is always disabled. "Digital on Thinkpad" is DisplayPort on dock
Graphics Device
• Integrated Graphics • Discrete Graphics • NVIDIA Optimus
OS Detection for boot time, password prompt, and ThinkPad Setup.
NVIDIA Optimus runs as Integrated Graphics mode and Discrete Graphics is effective...
(Traditional Chinese) User Guide - Page 181
... Optimus
OS Detection for NVIDIA Optimus
• Disabled • Enabled
Independent ThinkPad
Synchronized
Automatic
On
Off
ThinkPad NumLock Synchronized Power-On NumLock。
ThinkPad Setup
『Digital on Thinkpad DisplayPort。
『Digial 1 on dock』 和 『Digital 2 on dock DisplayPort 或 DVI。
Integrated Graphics...
(Japanese) User Guide - Page 208
... LCD • Analog (VGA) • Digital on ThinkPad • Digital 1 on dock • Digital 2 on dock
Graphics Device
• Integrated Graphics • Discrete Graphics • NVIDIA Optimus
Power
OS Detection for NVIDIA Optimus
• Disabled • Enabled
Intel SpeedStep® technology • Disabled
(Intel SpeedStep mounted models only)
• Enabled
Mode for AC...
(Hebrew) User Guide - Page 23
...4 ThinkPad T420/T420i
1 SIM 3
5
1 SIM WAN Subscriber Identification Module) SIM Wide Area) WAN
- Network SIM SIM-
2 AC
Serial Ultrabay Slim Power Manager
Power Manager 19
3 ThinkPad Mini Dock Plus Series 3 ,ThinkPad Mini Dock...
(Arabic) User Guide - Page 183
...8234; :Maximum Performance
:Battery Optimized
:Disabled
:Maximize Performance
:Balanced
• ThinkPad LCD Analog (VGA
• Digital on ThinkPad Digital 1 on dock Digital 2 on dock
• Integrated Graphics Discrete Graphics NVIDIA...
Similar Questions
Youcam Disabled In Laptop But Camera Light Gets On When Laptop Srarts
(Posted by bendavi 9 years ago)
How To Add A Monitor To A Docking Station Thinkpad T420
(Posted by jackjja 9 years ago)
Lenovo Thinkpad T420 User Guide
i am using lenovo thinkpad T420 laptop computer but at the moment the computer is not working when i...
i am using lenovo thinkpad T420 laptop computer but at the moment the computer is not working when i...
(Posted by fitsakassa 10 years ago)
My Lenovo Thinkpad T420 Seem To Be Blocked: I Can't Access It's Windows 7.
(Posted by irenneflor 11 years ago)