Acer Aspire 7420 Service Guide
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Chapter 5123 Top View No.DescriptionNo.Description 1 Power Cable Connector 5 Fingerprint/Touchpad Connector 2 LCD Cable Connector 6 Bluetooth Connector 3 Touchpad Board Connector 7 Speaker Connector 4 Keyboard Connector Jumper and Connector Locations Chapter 5
124Chapter 5 Bottom View No.DescriptionNo.Description 1CPU 7USB Connector 2 SATA Connector 8 Card Reader 3 PC Card Reader 9 Line-out jack 4 LAN Connector 10 Mic-in jack 5 CRT Connector 11 Headphone jack 6 1394 Connector
Chapter 5125 Standard Operation Procedures of Password Bypassing and BIOS Recovery Bios/KBC update : The firmware are combined into one binary file and support both DOS and Windows mode update - DOS mode DO make sure you have plugged in the AC adapter to prevent flashing failure. Before flashing the BIOS, you should unzip the compressed file to one directory. a.Plug in the AC adapter. b.Unzip HIC100WW to C: HIC100WW. c.Boot to pure DOS. d.It is better not to load HIMEM.sys (bypass CONFIG.sys). e.To flash the BIOS by Phoenix flash utility, use *.wph ROM file to update the BIOS via the following command: C: HIC100WW \POM.BAT - Windows mode DO make sure you have plugged in the AC adapter to prevent flashing failure. Before flashing the BIOS, you should unzip the compressed file to one directory. a.Unzip HIC100WW to C: HIC100WW b.Plug in the AC adapter. c.Boot to pure Windows. d.To flash the BIOS by WFlash utility to update the BIOS via double click C: HIC100WW \Windows BIOSV1.00.exe Password Bypassing and Bios Recovery : For RD and CSD to debug easily, TM5520/TM5220/EX5420/EX5120/TM7520/TM7220/EX7420/EX7120 provides one hardware PIN pad for Bypassing Password Check, and one Hotkey to enable BIOS Recovery. 1.PIN pad : To short PIN pad to bypass password check. 2.Hotkey to enable BIOS Recovery: Fn+ESC, then Power Button, AC+DC coexistence is strongly recommended. Bypassing Password Check : If the user has set Password (power-on or setup password) for security reason, BIOS will check password during POST or when entering the BIOS setup menu. However, if it is necessary to ignore the password check, the user may enable short PIN Pad to bypass password check. BIOS Recovery: Boot Block is a special block of BIOS. It is used to boot up the system with minimum BIOS initialization. The user can enable this feature to restore the BIOS to a successful one if previous BIOS flashing process fails.
126Chapter 5 PIN pad Location The system board provides one hardware Pin pad under the keyboard pad. RD/CSD can enable this function by shorting this pad. The Pin Pad location should look as the figure below. 1.Clear Password PIN Pad: Bypassing Password Check Keep shorting the 2 triangle PIN pad as shown above and then powering on the system will force the BIOS to clear Supervisor and User passwords. 2.Clearing HDD password: To decode HDD password error code for unlocking hard disk in a DOS environment. A\> unlock6 XXXXX 00 XXXXX - HDD password error code Unlock6.exe v1.1 2 May 2003 Choice what kind of the password to be generated: 0.) Exit 1.) Scan code 2.) upper case ASCII Code 3.) Lower case ASCII code Enter your choice:2 (Choose 2) XXXXXXX XXXXXXX XXXXXXX Those passwords are master password. 3.Restoring the BIOS through the Crisis Disk
Chapter 5127 Enable this function by pressing Fn+ESC, and the Power Button. To use this function, it is strongly recommended that the AC adapter is plugged and battery is inserted into the battery slot. If this function is enabled, the system will force the BIOS to enter into a special BIOS block, called BootBlock. RD/CSD can use this special BIOS code to recover the BIOS to a successful one if previous BIOS flashing process fails. However, before doing this, one Crisis Disk should be prepared in WinXP. Follow the steps below: a.Prepare the Crisis Disk in WinXP (Crisis Disk will be released when BIOS V1.00 is released) b.Insert the Crisis Disk to a USB floppy drive which is attached to the failed machine. c.On the power-off state, press Fn+ESC, hold them, then press the power button. The system should be powered on with Crisis Recovery process. d.BootBlock BIOS starts to restore the failed BIOS code. Short beeps should be heard when flashing. e.If the flashing process is finished, a long beep should be heard. f.Power down the system when the above steps is finished. If the crisis recovery process is finished, the system should be powered on with a successful BIOS. RD/CSD can then update the BIOS to a workable one by regular BIOS flashing process.
Chapter 6129 This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of TravelMate 5710/5310 and Extensa 5610/5210. 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 PROVIDERS, your Acer office may have a DIFFERENT part number code from those given in the FRU list of this printed Service Guide. You MUST use the local FRU list provided by your regional Acer office to order FRU parts for repair and service of customer machines. NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on how to dispose it properly, or follow the rules set by your regional Acer office on how to return it. FRU (Field Replaceable Unit) List Chapter 6
130Chapter 6 TravelMate 7520/7520G/7220/7220G Exploded Diagram TravelMate 7520/7520G/7220/7220G FRU List CategoryNo.Part Name and DescriptionAcer Part No. Adapter ADAPTER 90W DELTA ADP-90SB BBDARAP.09001.010 ADAPTER 90W DELTA ADP-90SB BBEA LFAP.09001.013 ADAPTER 90W LITEON PA-1900- 04WRAP.09003.005 ADAPTER 90W LITEON PA-1900- 24ARAP.09003.011 Battery-
Chapter 6131 BATTERY PACK LI+ 6CELL 2.0MAH SANYOBT.00603.029 BATTERY PACK LI+ 6CELL 2.0MAH SONYBT.00604.015 BATTERY PACK LI 6CELL 2.0MAH PANASONICBT.00605.014 BATTERY PACK LI 6CELL 2.0MAH SIMPLOBT.00607.008 BATTERY PACK LI+ 8CELL 2.4MAH SANYOBT.00803.022 BATTERY PACK LI+ 8CELL 2.4MAH SONYBT.00804.019 BATTERY PACK LI+ 8CELL 2.4MAH PANASONICBT.00805.010 BATTERY PACK LI+ 8CELL 2.4MAH SIMPLOBT.00807.013 RTC BATTERY COIN BATTERY CR2032 MITSUBISHI23.TCZV1.004 Boards WIRELESS LAN BOARD 802.11ABG INTEL 3945 MW1KI.GLN01.001 WIRELESS LAN BOARD 802.11ABG INTEL 3945 MW2KI.GLN01.002 WIRELESS LAN BOARD 802.11ABG INTEL 3945 RWKI.GLN01.003 WIRELESS LAN BOARD 802.11ABG INTEL 3945BGKI.GLN01.005 WIRELESS LAN BOARD 802.11ABG KEDRON MOW1KI.KDN01.001 WIRELESS LAN BOARD 802.11ABG KEDRON MOW2KI.KDN01.002 WIRELESS LAN BOARD 802.11ABG KEDRON ROWKI.KDN01.003 VGA BOARD ATI MXM71 128MB GDDR HYNIX55.TK801.001 USB BOARD COLUMBIA 06583-1 55.TK901.001 LAUNCH BOARD COLUMBIA 06584-1 55.TK901.002 POWER BOARD COLUMBIA 06585- 1M55.TK901.003 TOUCHPAD SCROLL-KEY BOARD COLUMBIA 06587-156.TKC01.001 TOUCHPAD BOARD SYNAPTICS TM00372-01256.TK901.001 INVERTER BOARD 17” DARFON VK.21189.80119.TK901.001 INVERTER BOARD 17” FOXCONN T62I249.0019.TK901.002 INVERTER BOARD 17” SUMIDA IV12151/T-LF19.TK901.003 INVERTER BOARD 17” YEC YNV- W1019.TK901.004 MODEM BOARD FOXCONN T60M955.00 3.3VFX.22500.009 CategoryNo.Part Name and DescriptionAcer Part No.
132Chapter 6 Cables FINGER PRINT BOARD CABLE 50.TK901.001 TOUCHPAD CABLE 50.TK901.002 LAUNCH BOARD CABLE 50.TK901.003 POWER BOARD CABLE 50.TK901.004 BLUETOOTH CABLE 50.TK901.005 MODEM CABLE 50.TK901.006 USB BOARD CABLE 50.TK901.007 DC-IN CABLE 50.TK901.008 COVER SWITCH CABLE 50.TK901.009 LCD CABLE 15.4” 50.TK901.011 CategoryNo.Part Name and DescriptionAcer Part No.