Acer Aspire 9420 9410 7110 TravelMate 5620 5610 5110 User Manual

							71Chapter 3
11. Release the screw holding the CCD module and carefully pull the CCD module cable and LCD cable through 
the latch bar and LCD cover.
12. Remove the CCD module cap.
13. Remove the CCD module ring.
14. Push the CCD module upper case a little bit.
15. Then Separate the lower case from the upper case.
16. Release the two screws holding the CCD module board the detach the CCD module board. 
						

							Chapter 472
Please use the following procedures as a guide for computer problems.
Note: The diagnostic tests are intended to test only Acer products. Non-Acer products, prototype cards, or 
modified options may occur errors or invalid responses.
1. Obtain the detailed fail symptoms as many as possible.
2. Verify the symptoms by attempting to recreate, running the diagnostic tests or repeating the same operation.
3. Disassemble and assemble the unit without any power sources.
4. If any problem occurs, you can perform visual inspection before you fellow this chapter’s instructions. You can 
check the following:
•Power cords are properly connected and secured;
•There are no obvious shorts or opens;
•There are no obviously burned or heated components;
•All components appear normal.
Troubleshooting
Chapter 4 
						

							73Chapter 4
System Check Procedures
External Diskette Drive Check
Do the following procedures to isolate the possible effects from a controller, driver, or diskette. A writable, 
diagnostic diskette is required.
Note: Make sure that the diskette does not have more than one label attached. Multiple labels may cause 
damage to the drive or make the drive fail.
1. Boot from the diagnostic diskette and start the diagnostic programs.
2. See if FDD test is passed as the programs run the FDD test.
3. Follow the instructions in the message window.
If errors occur with the internal diskette driver, reconnect the diskette connector on the system board. If the errors 
still remain:
1. Reconnect the external diskette drive.
2. Replace the external diskette driver.
3. Replace the main board.
External CD-ROM Drive Check
Do the following procedures to isolate the possible effects from a controller, driver, or CD-ROM. 
Note: Make sure that the CD-ROM does not have any label attached. The label may cause damage to the 
drive or make the drive fail.
1. Boot from the diagnostic diskette and start the diagnostic programs.
2. See if CD-ROM test is passed when the programs run the CD-ROM test.
3. Follow the instructions in the message window.
If errors occur, reconnect the connector on the system board. If the errors still remain:
1. Reconnect the external CD-ROM drive.
2. Replace the external CD-ROM drive.
3. Replace the main board.
Keyboard or Auxiliary Input Device Check
Remove the external keyboard if the internal keyboard is under test. If the internal keyboard does not work or an 
unexpected error appears, make sure that the flexible cable extending from the internal keyboard is correctly 
connected on the system board. If the keyboard is correctly connected, run the Keyboard test.
If errors occur, do the following procedures in sequence to correct the problems. Do not replace a non-defective 
FRU.
1. Reconnect the keyboard cable.
2. Replace the keyboard.
3. Replace the main board.
The following auxiliary input devices are supported by this computer.
TNumeric keypad
TExternal keyboard
If any of these devices do not function, reconnect the cable and repeat the anterior procedures.
Memory Check
Follow the procedures below to correct the memory errors.
1. Boot from the diagnostic diskette and start the diagnostic programs. 
						

							Chapter 474
2. Go to the diagnostic memory in the test items.
3. Press F2 in the test items.
4. Follow the instructions in the message window.
Note: Make sure that the DIMM is correctly inserted into the connector. A wrong connection will cause errors.
Power System Check
To verify the symptoms, power on the computer by using the following power sources separately.
1. Remove the battery pack.
2. Connect the power adaptor and check the power supply.
3. Disconnect the power adaptor and install the battery pack, then check the power supply.
If you think there is a power supply problem, please go to “Check the Power Adaptor” and “Check the Battery 
Pack” in this chapter.
Check the Power Adaptor
Unplug the power adaptor cable from the computer and measure the output voltage at the plug of the power 
adaptor cable. See the illustration and follow the procedures below.
1. If the voltage is not correct, replace the power adaptor.
2. If the voltage is within the range:
(1)Replace the system board.
(2)If the problem is still not resolved, see “Undetermined Problems”.
(3)If the voltage is not correct, go to the next step.
Note: An audible noise from the power adaptor does not always indicate a defect.
3. If the power-on indicator does not light up, check the power cord of the power adaptor for continuity and correct 
installation.
4. If the operational charge does not work, see “Check the Battery Pack”.
Check the Battery Pack
Follow the procedures below to check the battery pack.
From software, this helps to identify the problem is on recharging or discharging.
1. Check the Power Management in Control Panel.
2. Then confirm that the parameters shown in the screen for Current Power Source and Total Battery Power 
Remaining are correct.
3. Repeat the step 1 and step 2 for both battery and adaptor.
From hardware, this helps to identify whether you should replace the battery pack or not.
1. Power off the system.
2. Remove the battery pack and measure the voltage between terminals one (+) and seven (-). There are seven 
terminals totally. See the illustration below.
3. If the voltage is still less than 7.5V after recharging, replace the battery.
If the battery status indicator does not light up, remove the battery pack. After the battery pack returns to room 
temperature, reinstall it to the system.
pin 1: +19V to +20.5V
pin 2: 0V, ground 
						

							75Chapter 4
If the charge indicator does not light up, replace the battery pack. If the charge indicator still does not light up, 
replace the AC/DC charger board.
Touchpad Check
If the touchpad does not work, follow the procedures one at a time to correct the problem. Do not replace a non-
defective FRU.
1. After rebooting, run Tracking Pad PS2 Mode Driver. For example, run Syn touch driver.
2. Run utility with the PS/2 mouse function and check if the mouse is working.
3. If the PS/2 mouse does not work, then click if the main board to switch board FPC is connected properly.
4. If the main board to switch board FPC is connected correctly, then check if the FFC on the touch pad PCB is 
connected properly.
5. If the FFC on the touch pad PCB is connected correctly, check if LS851 JP1 Pin6 = 5V are pules. If yes, then 
replace switch board. If not, then go to the next step.
6. Replace the touch pad PCB.
7. If the touch pad still does not work, then replace the FPC on Track Pad PCB.
After you use the touchpad, the pointer drifts on the screen for a short time. This self-acting pointer movement will 
occur when a slight, steady pressure is applied to the touchpad pointer. This symptom is not a hardware problem. 
No actions are necessary to be taken if the pointer movement stops in a short period of time. 
						

							Chapter 476
Power-On Self-Test (POST) Error Message
The POST error message index lists the error message and their possible causes.
Note: Perform the FRU replacement or actions in the sequence shown in Error Message List, if the FRU 
replacement does not solve the problem, put the original part back in the computer. Do not replace a non-
defective FRU.
The error messages are listed in the coming pages to indicate the BIOS signals on the screen and the error 
symptoms classified by functions. If the symptom is not included on the list, please refer to “Undetermined 
Problems”.
Note: Most of the error messages occur during POST. Some of them show information about a hardware 
device, for example, the size of memory installed. Others may indicate problems with a device, such as the 
way it has been configured.
Note: If the system fails after you make changes in the BIOS Setup Utility menus, please reset the computer. 
Enter Setup and install Setup defaults to correct the errors. 
						

							77Chapter 4
Index of Error Messages
Error Message List
Error MessagesFRU/Action in Sequence
Struck Key See “Keyboard or Auxiliary Input Device Check“.
System CMOS checksum bad - 
Default configuration usedRTC battery
Run BIOS Setup Utility to reconfigure system, then 
reboot system.
Real time clock error RTC battery
Run BIOS Setup Utility to reconfigure system time, then 
reboot system.
Main board
Previous boot incomplete - Default 
configuration used“Load Default Settings” in BIOS Setup Utility.
RTC battery
Main board
Invalid System Configuration Data “Load Default Settings” in BIOS Setup Utility.
Main board
Operating system not found Enter Setup and see if fixed disk and drive A are 
properly identified.
Diskette drive
Hard disk drive
Main board
Power-on indicator turns off and LCD 
is blank.Power source (battery pack and power adapter.) See 
“Power System Check“.
Ensure every connector is connected tightly and 
correctly.
Reconnect the DIMM.
Main board.
Power-on indicator turns on and LCD 
is blank.Power source (battery pack and power adapter.) See 
“Power System Check“.
Reconnect the LCD connector
Hard disk drive
LCD cable
LCD inverter
LCD
Main board
Power-on indicator turns on and LCD 
is blank. But you can see POST on an 
external CRT.Reconnect the LCD connectors.
LCD cable
LCD inverter
LCD
Main board
Power-on indicator turns on and a 
blinking cursor shown on LCD during 
POST.Ensure every connector is connected tightly and 
correctly.
Main board 
						

							Chapter 478
Phoenix BIOS Beep Codes
CodeBeepsPOST Routine Description
02h Verify Real Mode
03h Disable Non-Maskable Interrupt (NMI)
04h Get CPU type
06h Initialize system hardware
07h Disable shadow and execute code from 
the ROM.
08h Initialize chipset with initial POST 
values
09h Set IN POST flag
0Ah Initialize CPU registers
0Bh Enable CPU cache
0Ch Initialize caches to initial POST values
0Eh Initialize I/O component
0Fh Initialize the local bus IDE
10h Initialize Power Management
11h Load alternate registers with initial 
POST values
12h Restore CPU control word during warm 
boot
13h Initialize PCI Bus Mastering devices
14h Initialize keyboard controller
16h 1-2-2-3 BIOS ROM checksum
17h Initialize cache before memory autosize
18h 8254 timer initialization
1Ah 8237 DMA controller initialization
1Ch Reset Programmable Interrupt 
Controller
20h 1-3-1-1 Test DRAM refresh
22h 1-3-1-3 Test 8742 Keyboard Controller
24h Set ES segment register to 4 GB
28h Autosize DRAM
29h Initialize POST Memory Manager
2Ah Clear 215 KB base RAM
2Ch 1-3-4-1 RAM failure on address line xxxx
2Eh 1-3-4-3 RAM failure on data bits xxxx of low 
byte of memory bus
2Fh Enable cache before system BIOS 
shadow
32h Test CPU bus-clock frequency
33h Initialize Phoenix Dispatch Manager
36h Warm start shut down
38h Shadow system BIOS ROM 
						

							79Chapter 4
3Ah Autosize cache
3Ch Advanced configuration of chipset 
registers
3Dh Load alternate registers with CMOS 
values
41h Initialize extended memory for 
RomPilot.
42h Initialize interrupt vectors
45h POST device initialization
46h 2-1-2-3 Check ROM copyright notice
47h Initialize I20 support
48h Check video configuration against 
CMOS
49h Initialize PCI bus and devices
4Ah Initialize all video adapters in system
4Bh QuietBoot start (optional)
4Ch Shadow video BIOS ROM
4Eh Display BIOS copyright notice
50h Display CPU type and speed
51h Initialize EISA board
52h Test keyboard
54h Set key click if enabled
55h Enable USB devices
58h 2-2-3-1 Test for unexpected interrupts
59h Initialize POST display service
5Ah Display prompt “Press F2 to enter 
SETUP”
5Bh Disable CPU cache
5Ch Test RAM between 512 and 640 KB
60h Test extended memory
62h Test extended memory address lines
64h Jump to User Patch1
66h Configure advanced cache registers
67h Initialize Multi Processor APIC
68h Enable external and CPU caches
69h Setup System Management Mode 
(SMM) area
6Ah Display external L2 cache size
6Bh Load custom defaults (optional)
6Ch Display shadow-area message
6Eh Display possible high address for UMB 
recovery
70h Display error messages
72h Check for configuration errors
76h Check for keyboard errors
CodeBeepsPOST Routine Description 
						

							Chapter 480
7Ch Set up hardware interrupt vectors
7Eh Initialize coprocessor if present
80h Disable onboard Super I/O ports and 
IRQs
81h Late POST device initialization
82h Detect and install external RS232 ports
83h Configure non-MCD IDE controllers
84h Detect and install external parallel ports
85h Initialize PC-compatible PnP ISA 
devices
86h Re-initialize onboard I/O ports
87h Configure Motherboard Configurable 
Devices (optional)
88h Initialize BIOS Data Area
89h Enable Non-Maskable Interrupts (NMIs)
8Ah Initialize Extended BIOS Data Area
8Bh Test and initialize PS/2 mouse
8Ch Initialize floppy controller
8Fh Determine number of ATA drives 
(optional)
90h Initialize hard-disk controllers
91h Initialize local-bus hard-disk controllers
92h Jump to UserPatch2
93h Build MPTABLE for multi-processor 
boards
95h Install CD ROM for boot
96h Clear huge ES segment register
97h Fixup Multi Processor table
98h 1-2 Search for option ROMs. One long, two 
short beeps on checksum failure.
99h Check for SMART drive (optional)
9Ah Shadow option ROMs
9Ch Set up Power Management
9Dh Initialize security engine (optional)
9Eh Enable hardware interrupts
9Fh Determine number of ATA and SCSI 
drives
A0h Set time of day
A2h Check key lock
A4h Initialize Typematic rate
A8h Erase F2 prompt
AAh Scan for F2 key stroke
ACh Enter SETUP
AEh Clear Boot flag
B0h Check for errors
CodeBeepsPOST Routine Description