Acer Aspire 5749 Support Question
Acer Aspire 5749 Support Question
Find answers below for this question about Acer Aspire 5749.Need a Acer Aspire 5749 manual? We have 1 online manual for this item!
Question posted by vhiebert3 on December 23rd, 2013
Speakers Whistle
Whenever I unplug the speakers from the computer, it has an extremely loud whistle. How can I get rid of it?
Current Answers
Answer #1: Posted by TommyKervz on December 23rd, 2013 2:42 AM
TommyKervz
Member since:
January 10th, 2013 Points: 17,776,783
Member since:
January 10th, 2013 Points: 17,776,783
Greetings. Do see the article here
http://www.ehow.com/facts_7591971_do-laptop-speakers-whistle.html
Related Acer Aspire 5749 Manual Pages
Aspire 5349, 5749, 5749Z Service Guide - Page 8
... Module) Removal 3-35 DIMM Installation 3-36 Power Board Removal 3-37 Power Board Installation 3-38 DC-in Jack Removal 3-39 DC-in Jack Installation 3-40 Speakers Removal 3-41 Speakers Installation 3-41 LCD (Liquid Crystal Display) Module Removal 3-42 LCD Module Installation 3-43 LCD Bezel Removal 3-44 LCD Bezel Installation 3-45 Camera Module Removal...
Aspire 5349, 5749, 5749Z Service Guide - Page 9
... CMOS Jumper 5-6 BIOS Recovery by Crisis Disk 5-6
CHAPTER 6 FRU (Field Replaceable Unit) List
Exploded Diagrams 6-4 FRU List 6-7 Screw List 6-16
CHAPTER 7 Model Definition and Configuration
Aspire 5349 7-1 Aspire 5749Z 7-3 Aspire 5749 7-5
CHAPTER 8 Test Compatible Components
Microsoft® Windows® 7 Environment Test 8-4
CHAPTER 9 Online Support Information
Introduction 9-3
ix
Aspire 5349, 5749, 5749Z Service Guide - Page 15
...; 7 Home Basic 64-bit Genuine Windows® 7 Home Premium 64-bit
Platform 0
Aspire 5349
0
Intel® Celeron® processor B710/B800 (1 MB/2 MB L3 cache, ...® 64 architecture, Intel® Smart Cache
Mobile Intel® HM65 Express Chipset
Aspire 5749
0
Intel® Core™ i3-2310M/i3-2330M/i3-2350M processor (3 MB ...
Aspire 5349, 5749, 5749Z Service Guide - Page 16
Two built-in stereo speakers MS-Sound compatible Built-in microphone
Graphics 0
Intel® HD Graphics with 128 MB of dedicated system memory, supporting Microsoft® ...
Aspire 5349, 5749, 5749Z Service Guide - Page 18
..., volume down
I/O Ports 0
2-in-1 card reader (SD™, MMC) Three USB 2.0 ports External display (VGA) port Headphone/speaker jack Microphone-in jack Ethernet (RJ-45) port DC-in jack for AC adapter HDMI® port...
Aspire 5349, 5749, 5749Z Service Guide - Page 22
...'s power status. Fully charged: The light shows blue when in AC mode.
9
Palmrest
Comfortable support area for your hands when you use the computer.
10
Speaker
Delivers audio output
Note: Color option may depend on the model.
1-12
Hardware Specifications and Configurations
Aspire 5349, 5749, 5749Z Service Guide - Page 23
Closed Front View
Table 1-2.
Note: Push to audio line-out devices (e.g., speakers, headphones). Headphone/ speaker/line-out jack
2-in-1 card reader
Connects to remove/install the card. Only onecard can operate at any given time. Figure 1-2. Accepts Secure Digital (SD), ...
Aspire 5349, 5749, 5749Z Service Guide - Page 31
... vary by configuration.)
Puts the computer in the hockey combination. Press any key to save power.
Turns the touchpad on and off.
+
+
Speaker toggle Brightness up
Turns the speakers on and off Touchpad toggle
Switches display output between the display screen, external monitor (if connected) and both. Hotkeys 0
The computer employs hotkeys...
Aspire 5349, 5749, 5749Z Service Guide - Page 45
... overload protection for Class-D amplifier Class D amplifier has high pass filter with programmable Cut-Off
frequency (10Hz~900Hz) to prevent low frequency signal damage speaker Class D amplifier output with slew rate and spread spectrum control to improve EMI performance Independent left and right channel of output power limiter...
Aspire 5349, 5749, 5749Z Service Guide - Page 46
...Audio onboard or optional Mono or Stereo Resolution Compatibility Sampling rate
Internal microphone Internal speaker/quantity
Specification Realtek ALC271X On board Mono Support 16/24bit PCM HD audio ...Interface Sample rate up to 192Khz resolution VSR (Variable Sampling Rate) Yes Yes/(1.2W speakers x2)
Wireless Module 802.11b/g/n
Item Chipset
Data throughput
Protocol Interface
Atheros HB95
11-...
Aspire 5349, 5749, 5749Z Service Guide - Page 86
... Memory Module) Removal 3-35 DIMM Installation 3-36 Power Board Removal 3-37 Power Board Installation 3-38 DC-in Jack Removal 3-39 DC-in Jack Installation 3-40 Speakers Removal 3-41 Speakers Installation 3-41 LCD (Liquid Crystal Display) Module Removal 3-42
3-2
Aspire 5349, 5749, 5749Z Service Guide - Page 90
Battery
Dummy card
Keyboard
Speaker cable Power FFC
Touchpad FFC
ODD module
Base cover
USB module
HDD module...3-1 shows a graphic representation of the module removal and installation sequences. Maintenance Flowchart 0
The flowchart in Jack
LCD module
Speaker
LCD bezel
Camera
LCD panel
LCD hinge
LVDS cable
Thermal module
Figure 3-1. It shows information on what components may need ...
Aspire 5349, 5749, 5749Z Service Guide - Page 96
... cable and the power cable. 5. UpperCase Screws and FFC Removal 0
Prerequisite:
Keyboard Removal 1.
A
B C
Figure 3-7. Disconnect the touchpad cable (A), speaker cable (B) and power cable (C)
(Figure 3-7). UpperCase Screws and FFC Installation 0
3. ID
Size
Red M2.5*3.5 Call out
Quantity 4
Screw Type
3-12
Machine Maintenance Procedures Base Cover ...
Aspire 5349, 5749, 5749Z Service Guide - Page 113
Mainboard Location
2. Disconnect the speaker cable from the lower case.
! Machine Maintenance Procedures
3-29 Remove the mainboard by lifting it from the mainboard connector (A) (Figure 3-27). 3.
CAUTION:
Make sure all ...
Aspire 5349, 5749, 5749Z Service Guide - Page 114
... 3-27). 4. ID
Size
B M2.5*3.5
Quantity 2
Screw Type
3-30
Machine Maintenance Procedures Figure 3-28.
Install the Bluetooth module.
Please follow local regulations for disposal. Connect the speaker cable to the mainboard (Figure 3-27). 3. Mainboard
+ IMPORTANT:
The mainboard is shown in the above image.
Aspire 5349, 5749, 5749Z Service Guide - Page 125
Speakers Removal 0
Prerequisite:
Mainboard Removal 1.
Place the speakers onto the lower case and press down to Figure 3-39.
2. Refer to secure it. Machine Maintenance Procedures
3-41 Install the mainboard.
Speakers
Speakers Installation 0
1. A
A
A
Figure 3-39. Remove the speakers by lifting upwards from the lower case (Figure 3-39).
Aspire 5349, 5749, 5749Z Service Guide - Page 139
... procedures are designed to determine the solution. Common Problems Symptoms (Verified) Power On Issues No Display Issues LCD Failure Keyboard Failure Touchpad Failure Internal Speaker Failure Microphone Failure USB Failure Other Functions Failure Intermittent Problems Undetermined Problems
4. Obtain as much detailed information as possible about troubleshooting common problems associated with...
Aspire 5349, 5749, 5749Z Service Guide - Page 165
... BIOS POST is cleared. 11. Steps for Clearing BIOS Password Check
0
If users set BIOS Password (Supervisor Password and/or User Password) for the Aspire 5349/5749/5749Z. Use an electric conductivity tool to short the two points of clearing password and BIOS recovery for a security reason, BIOS will ask the password...
Aspire 5349, 5749, 5749Z Service Guide - Page 171
... by the regional Acer office to order FRU parts for repair and service of this chapter whenever ordering for parts to repair or for the Aspire 5349/5749/5749Z.
For ACER AUTHORIZED SERVICE PROVIDERS, the Acer office may have a DIFFERENT part number code from those given in global configurations for RMA (Return...
Aspire 5349, 5749, 5749Z Service Guide - Page 195
... Report released by Acer's internal testing department. All of its system functions are tested under Windows® 7 environment.
Test Compatible Components
8-3 Refer to the Aspire 5349/5749/5749Z. Regarding configuration, combination and test procedures, please refer to the following lists for components, adapter cards, and peripherals which have passed these tests. Test...
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