Lenovo B40-70 Support Question
Lenovo B40-70 Support Question
Find answers below for this question about Lenovo B40-70.Need a Lenovo B40-70 manual? We have 7 online manuals for this item!
Question posted by kadugaya on February 17th, 2015
Audio Jack Is Suddenly Stopped Working
Today my head phones suddenly stopped working, only the sound I can hear is from the Laptop Speakers.
Current Answers
Related Lenovo B40-70 Manual Pages
Safety and General Information Guide - Notebook - Page 6
... about the condition of service and support phone numbers, go to inspect the product and...safety information
This information can help you might hear sounds like popping, cracking or hissing. Power cords... product. However, do not use your product, stop using the product and unplug it repaired, if necessary...work environment. However, personal computers are developed to misuse or neglect.
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 3
... 25 Screen blank state 25 Putting the computer to sleep or shutting it down 25
Lenovo B40-30/B40-45/B40-70 27 Specifications 27 Status indicators 29 Fn key combinations 30 Hotkeys 30 FRU replacement notices 31...board 45 1100 USB board 47 1110 System board 48 1120 Fan and heat sink assembly 50 1130 Speakers 51 1140 LCD unit and base cover 52 1150 LCD front bezel 56 1160 LCD panel 57 ...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 4
...‐specific section includes service, reference, and product‐specific
parts information. iv Important: This manual is divided into the following Lenovo product:
Lenovo B40-30/B40-45/B40-70 Use this manual to troubleshoot problems effectively. About this manual
This manual contains service and reference information for the following sections: • The common...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 6
...B40-30/B40-45/ B40-70 Hardware Maintenance Manual
General safety
Follow the following rules to ensure general safety: • Observe a good housekeeping in the area where the machines are fastened or rolled up with your back. Never move suddenly..., drilling, soldering, cutting wire, attaching springs, using solvents, or working in the moving parts of internal components. Make sure that you ....
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 7
... , ask the customer to power‐off the power, if necessary. - Lenovo B40-30/B40-45/B40-70
Electrical safety
Observe the following precautions: - Many customers have handles covered with powered‐on electrical equipments. If an electrical accident occurs, you when working with very high voltages; Stand on suitable rubber mats (obtained locally, if...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 8
... - Use caution: do not become a victim yourself. - Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
• Always look carefully for possible hazards in ...similar units. (This practice ensures correct grounding of these hazards are removed from their normal operating places in your work area. Send the victim to get medical aid.
4 Examples of the units.)
• If an electrical ...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 9
Lenovo B40-30/B40-45/B40-70
Safety inspection guide
The purpose of every service task. Consider these conditions and the safety hazards they present: • Electrical hazards, especially primary power (primary ...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 10
... below, to electrostatic discharge (ESD).
Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
Handling devices that are sensitive... to electrostatic discharge
Any computer part containing transistors or integrated circuits (ICs) should be verified by equalizing the charge so that the machine, the part, the work...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 18
Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
Laser compliance statement
Some models of the International Electrotechnical Commission (IEC) 825 and CENELEC EN 60 825 for Class 1 laser products. Elsewhere, ...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 20
... 16
- The BIOS and device drivers are customer‐installable.
Go to the system board before replacing any FRUs listed in this manual. Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
Important service information
This chapter presents the following important service information: • "Strategy for replacing a hard disk drive" on page 17...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 24
...a hard disk drive becomes noisy, it : 1. Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
What to do first
When you do return...disk insertion or use . Date of service 3. Date on laptop products
The following symptoms might indicate damage caused by nonwarranted activities... type, model number, and serial number 8. Name and phone number of an incorrect AC adapter on which the failing ...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 29
Lenovo B40-30/B40-45/B40-70
Power management
Note: Power management modes are not supported for only a short time, put the computer to sleep....loss of the following: • Press any key on the "Turn off monitor" timer in sleep mode, you have finished working with your computer while the hard disk is in the operating system expires, the LCD backlight turns off the LCD backlight by pressing ...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 32
... × 1 or USB 2.0 × 1, USB
3.0 × 2 • 4 in 1 slot × 1 (SD, SDHC, SDXC, MMC) • Combo audio jack × 1 • Speaker × 2 • Built‐in microphone × 1 (on select models)
CRT× 1, HDMI port × 1 • Intel 1x1 11ac + BT4.0 combo ...lite/DOS/Win7/Win 8.1/Win8.1 downgrade
28 Lenovo B40-30/B40-45/ B40-70 Hardware Maintenance Manual
Table 1.
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 44
Step
b
Screw (quantity) M2 x 3 mm, flat‐head, nylok‐coated (1)
Color Torque Black 1.0~1.5kgf.cm
Remove the card in the .../B40-45/ B40-70 Hardware Maintenance Manual
1060 PCI Express Mini Card for wireless LAN/WAN
Disconnect the two wireless LAN cables (black, white) a, and then remove the screws b.
2
1 1
In step a, unplug the jacks by using the removal tool antenna RF connector
...
Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 53
... f .
5 4
6
Step Screw (quantity)
Color Torque
d 7 M2.5 x 4 mm, flat‐head, nylok‐coated (1) Black 2.0~2.5kgf.cm
When installing: • Make sure USB, HDMI, and the VGA of the system board attached into its cavity in the direction by arrow e . Lenovo B40-30/B40-45/B40-70
Figure 11. Pull the DC‐IN connect from...
Lenovo Limited Warranty - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 22
...:9 (1,366 × 768 pixels HD) 16:9 (1,920 × 1,080 pixels FHD)
LED
USB 2.0 × 1, USB 3.0 × 2 USB 2.0 × 2, USB 3.0 × 1(B40‐30/B50‐30)
RJ‐45 × 1 Combo audio jack ×1
HDMI × 1 SODIMM × 2
Li‐Cyllinder 4 cells, 2200mAh
100 ‐ 240 V, 50 ‐ 60 Hz AC 20 V DC...
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 12
... battery. Reattach it provides power to know your computer
Left-side view
B40-30/N40-30/B40-70/N40-70/B40-45/N40-45/B50-30/B50-30 Touch/B50-45/N50-45
1
3
B50-70/N50-70
4
5
6
7
12
3
4
5
6
7
a AC power adapter jack Connects the AC power adapter.
Getting to the computer and charges the battery. Note...
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 16
... computer to help protect your computer
Right-side view
B40-30/N40-30/B40-70/N40-70/B40-45/N40-45:
1
234
5
B50-30/B50-30 Touch/B50-70/N50-70/B50-45/N50-45:
1
23
5
4
a Combo audio jack
Connects to different industry standards. Note: • The combo audio jack does not support conventional microphones. • The recording function...
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 33
... an acceptable range, have the hard disk drive replaced.
The computer does not return from sleep mode, stops responding, or cannot be turned off .
• The battery power is required, and a fee will....
• If the system still does not return from sleep mode, and the computer does not work.
• If your password. Connect the AC power adapter to reset your user password.
•...
User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 34
...; The combo audio jack is included in the EFI
list.
28
Chapter 4. Troubleshooting
Sound problems
No sound can be active.
Hard disk drive problem
The hard disk drive does not • In the Boot menu in the battery might be heard from the speakers even when the... computer again. The computer does not
• The surge protector in the BIOS setup utility, make
work. protector;
Similar Questions
Flash Bios Updated But Now The Laptop Is Not Booting?
I have updated flash bios downloaded form Lenovo official site. In the processes the laptop restarte...
I have updated flash bios downloaded form Lenovo official site. In the processes the laptop restarte...
(Posted by baljit0377 9 years ago)
I Just Purchased A Lenovo B40 And I Was Wondering If There Is A Dial Up Port ?
(Posted by AlliedLocksmiths 9 years ago)
My Lenovo B570 Makes A Beep Sound And Stops Working.
My Lenovo B570 makes a beep sound and stops working. It Happens mostly when i receive emails on Ms O...
My Lenovo B570 makes a beep sound and stops working. It Happens mostly when i receive emails on Ms O...
(Posted by saeedspicher 11 years ago)
The Audio Has Suddenly Stopped Working
The audio has suddenly stopped working. Somebody plz help me.
The audio has suddenly stopped working. Somebody plz help me.
(Posted by vikashsingh2201 11 years ago)
Replace A 1/8 Audio Jack On A Lenovo G560
What is the best way to replace the 1/8" headphone jack on a G560? Where can I find diagrams and are...
What is the best way to replace the 1/8" headphone jack on a G560? Where can I find diagrams and are...
(Posted by phillipbouchard 12 years ago)