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 belMar on September 19th, 2014
How To Turn On Thinkpad T420 Bluetooth Switch
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Current Answers
Answer #1: Posted by freginold on November 13th, 2014 11:56 AM
freginold
Member since:
December 20th, 2011 Points: 23,253,885
Member since:
December 20th, 2011 Points: 23,253,885
You can use the wireless radio switch on the right side of the computer to turn the wireless function on or off. To see the exact location of this switch, refer to the illustration on page 5 of the user guide.
Related Lenovo ThinkPad T420 Manual Pages
Hardware Maintenance Manual - Page 8
...hazards in your body. - Similar units to work with the power-off (EPO) switch, disconnecting switch, or electrical outlet. If you cannot unplug it has been powered off.
•...the reflective surface of the units.
• If an electrical accident occurs:
2 ThinkPad T420 and T420i Hardware Maintenance Manual Electrical safety
Observe the following rules when working on electrical...
Hardware Maintenance Manual - Page 36
...unsupported device names may appear in Interactive Tests, the Fn key should be sensed.
30 ThinkPad T420 and T420i Hardware Maintenance Manual Note: You can select an item not only with the ...the arrow keys, and press Enter.
All Rights Reserved. Follow the instructions on the computer. Turn off the computer. 2. The main panel of pressing Enter, click the left button. Select Diagnostics...
Hardware Maintenance Manual - Page 44
... from it at least 3 hours, even if the indicator does not turn on , replace the battery pack. See the following : 1. See the following : 1. If the... If the resistance is correct, replace the system board. Checking the backup battery
Do the following figure.
38 ThinkPad T420 and T420i Hardware Maintenance Manual Remove the battery pack (see "1100 Backup battery" on , remove the battery ...
Hardware Maintenance Manual - Page 48
... program and then press F9 to the system user.
42 ThinkPad T420 and T420i Hardware Maintenance Manual
Power-on password
A power-on the screen. 6. If you might experience periods when no action is turned on by you might want to save and exit the ThinkPad Setup program. Note: The rest of these terms and...
Hardware Maintenance Manual - Page 51
... (in Windows XP), and hibernation.
Hibernation mode
In hibernation mode, the following : • Press the Fn key. • Open the LCD cover. • Turn on the power switch.
Power management
To reduce power consumption, the computer has three power management modes: screen blank, sleep (standby in Windows XP, power scheme) appears. 2.
Chapter...
Hardware Maintenance Manual - Page 52
.... • If the timer conditions are satisfied in suspend mode. Pressing the power button. - If you do undock it is turned on the hard disk drive is read, and system status is powered off. The hibernation file in either of the following conditions:... in the boot record on , the computer returns from the hard disk drive.
46 ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 54
....
Place the ThinkPad Notebook on HDD2 (Mini SATA)
2200 Machine Type and Serial Number are invalid. 2201 Machine UUID is invalid
FRU or action, in -Turn off and remove... F10.
2. Ultrabay hard disk drive. 3. System board. Table 2.
System board.
48 ThinkPad T420 and T420i Hardware Maintenance Manual Charge the backup battery for the authentication.
1. System board.
...
Hardware Maintenance Manual - Page 58
... each FRU for the system board in the internal drive i. DIMM h.
Printer, mouse, and other external devices d.
Turn on page 37.)
1. Turn off the computer. 2. Remove or disconnect all attached devices are installed, or if the system simply is operating correctly....the following FRUs one at least 10 times. 2. LCD assembly
52 ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual - Page 60
... computer into sleep (standby) mode or turn off the computer. Data is being transmitted.
4
Bluetooth wireless or Wireless USB status
Green:
The Bluetooth wireless feature is on , and the radio...light is ready
R
for use . Sudden physical shock could cause drive errors.
54 ThinkPad T420 and T420i Hardware Maintenance Manual None of the recording devices is available while the microphone ...
Hardware Maintenance Manual - Page 64
...the UltraNav® pointing device.
Enable the Full Screen Magnifier function.
58 ThinkPad T420 and T420i Hardware Maintenance Manual
Fn+End
The purpose of this combination of ...Fn key combinations (continued)
Key combination
Description
Note: To switch between the computer display and an external monitor.
Turn the ThinkLight® on the computer display and the external...
Hardware Maintenance Manual - Page 135
...
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. Locations
This chapter presents the locations of each indicator, see Chapter 5 "Status indicators" on page 53.
©...
Hardware Maintenance Manual - Page 160
..., Q9x, QAx, QBx, QCx, QDx, QEx, QFx, QHx, QKx, QLx • 4237-CTO • 4238-CTO
28 Bluetooth daughter card (BDC-3.0)
60Y3271
• 4177-CTO, 23x, 24x, 25x, 26x, 27x, 29x, 2Bx, 2Cx, 2Dx, 2Ex,...see "Keyboard" on page 164.)
CRU ID N
* N
154 ThinkPad T420 and T420i Hardware Maintenance Manual Table 9. Thermal grease
91P8835
-
Parts list-Overall (continued)
No. FRU (Overall)
FRU ...
Hardware Maintenance Manual - Page 168
...right speaker • Bracket - battery connector • Lens, LED (RJ-45) • Knob, wireless switch • Lever, wireless switch • ODD lock button • ODD eject spring • ODD eject button • ODD eject ... miscellaneous parts: • Foot rubber - touchpad
162 ThinkPad T420 and T420i Hardware Maintenance Manual
FRU no. 04W1605
CRU ID
N
04W1602
N
04W1603
N
(English) User Guide - Page 20
ThinkPad T420/T420i front view
1 Computer display 3 Fingerprint reader 5 TrackPoint pointing stick 7 System and power-status indicators 9 Built-in microphone (left) 11 ThinkLight 13 UltraConnect wireless antennas (right) 15 Forward and Back keys 17 Touch pad 19 Fn key 21 Built-in stereo speaker (left)
2 Power switch 4 TrackPoint buttons 6 ThinkVantage button 8 UltraConnect wireless antennas...
(English) User Guide - Page 23
... combo connector The Universal Serial Bus connectors are used for a 34 mm-wide card. 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 a USB interface, such as...
(English) User Guide - Page 259
...reasonable protection against harmful interference in a residential installation. These limits are designed to the ThinkPad T420/T420i, machine types 4237, 4238, 4178, 4180, 4236, 4177, 4179.
Operation...countries in the EAR E1 country list. This equipment generates, uses, and can be determined by turning the equipment off and on, the user is connected. • Consult an authorized dealer or...
(Traditional Chinese) User Guide - Page 236
...ThinkPad
ThinkPad http://www.lenovo.com/support
ThinkPad 1 http://www.lenovo.com/support 2. 按一下 Support & downloads 3 Enter a product number Go。. 4 ThinkPad
EAR ECCN) 為 4A994.b EAR E1
ThinkPad T420... which the receiver is encouraged to try to correct the interference by turning the equipment off and on, the user is connected. •...
(Japanese) User Guide - Page 20
前面
図 1. ThinkPad T420/T420i 前面
1 3 Fingerprint Reader 5 TrackPoint 7 9 11 ThinkLight 13 UltraConnect 15 17 19 Fn キー 21
2 4 TrackPoint ボタン 6 ThinkVantage ボタン 8 UltraConnect 10 12 14 16 Bluetooth 18 20 Caps Lock 22
1
71 2 ThinkPad
ThinkPad 2
2
(Japanese) User Guide - Page 273
... with the instructions, may cause undesired operation. 4 ThinkPad
EAR ECCN) は 4A994.b EAR E1
Electronic emission notices
ThinkPad T420/T420i 4237、4238、4178、 4180、...interference in a residential installation.This equipment generates, uses, and can be determined by turning the equipment off and on, the user is encouraged to try to correct the...
(German) User Guide - Page 289
...Sie auf Go (Los).
4.
This equipment generates, uses, and can be determined by turning the equipment off and on a circuit different from that to Part 15 of the FCC ... Informationen beziehen sich auf den ThinkPad T420/T420i, Maschinetypen 4237, 4238, 4178, 4180, 4236, 4177, 4179.
3.
In den angezeigten Suchergebnissen finden Sie dann die ThinkPad Regulatory Notice. These limits are...
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