Acer Travelmate 7730a Service Guide

Chapter 4: Troubleshooting151
Keyboard and touchpad
Modem
Note: If you cannot find a symptom or an error in this list and the problem 
remains, see “Undetermined problems” on page 153.
Symptom / ErrorAction in Sequence
The keyboard (one or more keys) does 
not work.• Reconnect the keyboard cable.
• Test or replace the keyboard.
• Test or replace the system board.
The touchpad does not work. • Reconnect the touchpad cable.
• Test or replace the touchpad board.
• Test or replace the system board.
Symptom /...

152Chapter 4: Troubleshooting
Intermittent problems
Intermittent system hang problems can be caused by a variety of reasons that have nothing to do 
with a hardware defect. These reasons include: cosmic radiation, electrostatic discharge, or 
software errors. FRU replacement should be considered only when a recurring problem exists.
To analyze an intermittent problem:
1Run the advanced diagnostic test for the system board in loop mode at least ten 
times.
❑If any error is detected, replace the FRU.
❑If...

Chapter 4: Troubleshooting153
Undetermined problems
If the diagnostic test may not identify which adapter or device failed, which installed devices are 
incorrect, whether a short circuit is suspected, or whether the system is inoperative. Use these 
procedures to isolate the failing FRU (do not isolate a non-defective FRU).
Note: Verify that all attached devices are supported by the notebook.
Note: Verify that the power supply being used at the time of the failure is 
operating correctly. (See “Testing...

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155
❑System board top connectors
❑System board bottom connectors
❑Clearing password check and BIOS recovery
Jumper and connector locations
Chapter 5
TravelMate 7730/7730G 

156Chapter 5: Jumper and connector locations
System board top connectors
LCD connector
Power board connector
Keyboard connector
DDR3 connector
MDC connector
ExpressCard board 
connector
Bluetooth connector
PCMCIA connector 

Chapter 5: Jumper and connector locations157
System board bottom connectors
Battery connectorCPU socket
DC jack
RJ45 jack
Docking connector
VGA connector
HDMI connector
USB jacks
SPDIF audio jack
Audio jack
Audio jack
MXM (video card) connector
Hard drive connector Memory card reader Hard drive
connectorOptical disc
drive
connector DDR2 connector
PCI-E mini card connector 

158Chapter 5: Jumper and connector locations
Clearing password check and BIOS recovery
This section provides you with the standard operating procedures of clearing password and BIOS 
recovery for Travelmate 7730/7730G. The system board has one Hardware Open Gap for clearing 
the password check, and one Hotkey for enabling BIOS recovery.
Clearing the password check
Hardware Open Gap Description:
Locating the hardware gap on the system board
Gap name in Travelmate 7730/7730G is G71
Steps for Clearing BIOS...

Chapter 5: Jumper and connector locations159
6Plug in the power adapter while keeping the screwdriver on the gap, and press the 
power button to turn on the notebook.
7After the BIOS POST has finished, remove the tool from the gap.
8Restart the notebook. Press the F2 key to enter the BIOS Setup Utility.
If are not prompted for a password, then the BIOS passwords have been cleared.
If you are prompted for a password, repeat the procedure.
Note: This procedure only clears the BIOS password (Supervisor...

160Chapter 5: Jumper and connector locations