Acer Aspire 5500z Service Guide

Chapter 463
Error Message List
No beep Error MessagesFRU/Action in Sequence
No beep, power-on indicator turns off and LCD is 
blank. Power source (battery pack and power adapter). See “Power 
System Check” on page 57. 
Ensure every connector is connected tightly and correctly. 
Reconnect the DIMM.
LED board.
System board.
No beep, power-on indicator turns on and LCD is 
blank. Power source (battery pack and power adapter). See “Power 
System Check” on page 57. 
Reconnect the LCD connector
Hard disk...

64Chapter 4
Insyde MobilePro BIOS POST Beep Code and POST Messages
The POST error message index lists the error message and their possible causes. The most likely cause is 
listed first.
NOTE: Perform the FRU replacement or actions in the s equence shown in FRU/Action column, if the FRU 
replacement does not solve the proble m, put the original part back in the computer. Do not replace a 
non-defective FRU.
This index can also help you determine the next possible FRU to be replaced when servicing a...

Chapter 465
N/A “NO INTERRUPTS FROM TIMER 0” Timer 0 of the clock timer controller does not 
generate system interrupts correctly.
N/A “UNEXPECTED AMOUNT OF  MEMORY - RUN SCU” The system memory size does not match with 
the CMOS record.
N/A “CLOCK NOT TICKING CORRECTLY” The system clock does not working correctly.
N/A “TIME/DATA CORRUPT - RUN SCU” The time/ date information in CMOS is invalid.
N/A “MACHINE IS LOCKED - TURN KEY” The keyboard operation is locked.
N/A “BOOT SECTOR 0 HAS CHANGED” The boot...

66Chapter 4
Index of Symptom-to-FRU Error Message
LCD-Related Symptoms
Symptom / ErrorAction in Sequence
LCD backlight doesnt work
LCD is too dark
LCD brightness cannot be adjusted
LCD contrast cannot be adjusted Enter BIOS Utility to execute “Load Setup Default Settings”, then 
reboot system.
Reconnect the LCD connectors.
Keyboard (if contrast and brightne
ss function key doesnt work).
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
Unreadable LCD screen 
Missing pels in characters
Abnormal...

Chapter 467
Battery can’t be charged See “Check the Battery Pack” on page 59. 
Battery pack
System board
PCMCIA-Related Symptoms
Symptom / ErrorAction in Sequence
System cannot detect the PC Card  (PCMCIA)  PCMCIA slot assembly
System board
PCMCIA slot pin is damaged. PCMCIA slot assembly
Memory-Related Symptoms
Symptom / ErrorAction in Sequence
Memory count (size) appears different from 
actual size. Enter BIOS Setup Utility to execute “Load Default Settings, then 
reboot system.
DIMM
System board...

68Chapter 4
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
Problems” on page 70.
Battery fuel gauge in Windows doesn’t go higher 
than 90%.  Remove battery pack and let it cool for 2 hours.
Refresh battery (continue use battery until power off, then charge 
battery).
Battery pack
System board
System hangs intermittently. Reconnect hard disk/CD-ROM drives.  Hard disk connection board
System board
Peripheral-Related Symptoms
Symptom / ErrorAction in...

Chapter 469
Intermittent Problems
Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a 
hardware defect, such as: cosmic radiation, electros tatic discharge, or software errors. FRU replacement 
should be considered only when a recurring problem exists.
When analyzing an intermittent problem, do the following:
1. Run the advanced diagnostic test for the syst em board in loop mode at least 10 times.
2. If no error is detected,  do not replace any FRU.
3....

70Chapter 4
Undetermined Problems
The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect, 
whether a short circuit is suspected, or  whether the system is inoperative.  
Follow these procedures to isolate the faili ng FRU (do not isolate non-defective FRU).
NOTE:  Verify that all attached devices  are supported by the computer.
NOTE:  Verify that the power supply being used at the time  of the failure is operating correctly. (See “Power 
System...

Chapter 571
To p  V i e w
 
SW3 Power Switch SW1 Lid Swtich
JP1 Bluetooth Connector JP5 Touchpad Connector
SW2 E-mail Switch JP4 Keyboard Connector
SW4 Internet Browser Switch JP42 Speaker Connector
SW5 Emanager Switch JP7 PCMCIA Slot
SW6 User Programmable Switch JP10 Microphone Connector
2
JP1
2
JP42
JP5
2
KQ:
JP1022
JP42
2
JP7
2
2
SW1
SW2
SW3 SW4
SW5SW6
Jumper and Connector Locations
Chapter 5 

72Chapter 5
Bottom View
JP21 Fan Connector JP24 USB Port
PJP11 Battery Connector JP25 USB Port
JP20 CPU Socket JP30 IEEE 1394 Port (No IEEE 1394 
Port for this model )
JP16 LVDS Connector JP36 Card Reader Connector ( No Card 
Reader module for this model )
JP22 VGA Board Connector IR Infrared Receiver ( No FIR function 
for this model )
PCN1 AC-IN JP40 Headphone out/line-out Jack 
JP13 USB Port JP41Mic-in Jack
JP12 Reserved for Acer ezDock. ( No 
ezDock for this model) JP28
HDD Connector
JP14 Modem...