Acer Aspire 7740g Service Guide

Chapter 5105
Main Board 
Top View 
No.CodeConnector
1 LCD1 LCD cable connector
2 SPKR_L1 Left speaker cable connector
3 G29 Hardware gap
4 AMIC1 Microphone cable connector
 5 SPKR_R1 Right speaker able connector
6 USBCN1 USB cable connector
7 KB1 Keyboard cable connector
8 TPCN1 Touchpad cable connector
9 FPCN1 Touchpad button connector
10 MDC1 Modem board connector
11 BT1 Bluetooth cable connector
12 RTC1 RTC battery socket
Connector Locations
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Bottom View
No.CodeConnector
1 FAN1 Heatsink fan cable connector
2 DCIN1 DC-in cable connector
3 RJ45 Ethernet port
4 CRT1 VGA port
5 HDMI1 HDMI port
6 USB1 to USB3 USB 2.0 ports
7 LIN1 Line-in port
8 MICIN1 Microphone-in jack
9 LOUT1 Headphones/speaker/line-out jack with S/PDIF support
10 CARD1 SD card slot
11 CPU1 CPU socket
12 DM2 DIMM slot 2
13 DM1 DIMM slot 1
14 ODD1 Optical disk drive connector
15 SATATA1 HDD1 connector 
16 BAT1 Main battery connector  

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Clearing Password Check and BIOS Recovery
This section provides the standard operating procedures for clearing the password and BIOS recovery for 
Aspire 7740/7740G Series. There is one Hardware Open Gap on the main board for clearing the password 
check and one Hotkey for enabling BIOS Recovery.
Clearing Password Check
Hardware Open Gap Description
HW Gap position on the main board:
Gap name in Aspire 7740/7740G Series is G29.  
Steps for Clearing BIOS Password Check
If the user sets the...

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• If there is no password request, the BIOS Password is cleared. Otherwise, repeat the steps above 
and try again.
NOTE: The steps are only for clearing the BIOS password (Supervisor Password and User Password).
BIOS Recovery by Crisis Disk
BIOS Recovery Boot Block:
BIOS Recovery Boot Block is a special block of the BIOS. It is used to boot up the system with minimum BIOS 
initialization. Users can enable this feature to restore the BIOS firmware to a successful one once the previous 
BIOS...

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3.Decompress the Crisis Package Source.  Select WINCRIS.EXE  and then select Run as administrator 
under Vista.   
4.Keep the default settings and then click on the Start button.
5.When the pop-up warning dialog box appears, press OK to continue creating the Crisis Disk.    

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6.The Crisis Disk will be created after a few seconds. 
7.Press No if you do not want to create another Crisis Disk.  

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8.Reconnect the USB removable storage device and check if it contains the 3 files shown in the following 
figure.  

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Chapter 611 3
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of Aspire 7740/7740G 
Series. Refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise 
Authorization).
Please note that WHEN ORDERING FRU PARTS, you should check the most up-to-date information available 
on your regional web or channel. For whatever reasons a part number change is made, it will not be noted on 
the printed Service Guide. For ACER AUTHORIZED SERVICE...

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Exploded Diagram