Acer Aspire 7520 7220 Series User Manual

Chapter 487
D2h Unknown interrupt
CodeBeeps
E0h Initialize the chipset
E1h Initialize the bridge
E2h Initialize the CPU
E3h Initialize the system timer
E4h Initialize system I/O
E5h Check force recovery boot
E6h Checksum BIOS ROM
E7h Go to BIOS
E8h Set Huge Segment
E9h Initialize Multi Processor
EAh Initialize OEM special code
EBh Initialize PIC and DMA
ECh Initialize Memory type
EDh Initialize Memory size
EEh Shadow Boot Block
EFh System memory test
F0h Initialize interrupt vectors
F1h Initialize Run...

88Chapter 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 adjustedEnter BIOS Utility to execute “Load Setup Default Settings”, then 
reboot system.
Reconnect the LCD connectors.
Keyboard (if contrast and brightness function key doesnt work).
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
Unreadable LCD screen 
Missing pels in characters
Abnormal screen...

Chapter 489
Battery can’t be charged See “Check the Battery Pack” on page 79. 
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...

90Chapter 4
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
Problems” on page 92.
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 491
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, electrostatic 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 system board in loop mode at least 10 times.
2.If no error is detected, do not replace any FRU.
3.If any...

92Chapter 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 failing 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 Check” on...

Chapter 593
Top View
1 JP1 LVDS Connector 10 JP6 Touchpad Connector
2 JP3 Speaker (Left) Connector 11 U14 R5C833 Chip
3 JP34 Speaker (Right) Connector 12 U15 Keyboard Controller
4 JP4 Microphone Connector 13 JP9 PCI Express Card Socket
5 T1 14 LED1 Power/Suspend LED
6 JP5 Keyboard Connector 15 LED2 Battery Charge/Discharge LED
7 JP2 Button Board Connector 16 JP13 Mainboard to Audio Board 
Connector
8 JP36 LED Board Connector 17 JP11 Mainboard to USB & TV Board 
Connector
9 PHY RTL&11B Chip 18 JP12...

94Chapter 5
Bottom View
1 PJP1 DC-in Power Jack 13 JP26 IEEE1394 Connector
2 PJP2 Battery Connector 14 JP27 SATA HDD Connector
3 JP14 D-Sub CRT Connector 15 JP22 CPU Socket
4 JP25 ODD Connector 16 SW1 Volume Control
5 JP20 Mini Card (TV-Tuner) Connector 17 JP28 DDRII Memory Socket
6 JP20 Mini Card (WLAN) Connector 18 JP29 DDRII Memory Socket
7 JP21 Mini Card (TV-Tuner) Socket 19 U29 Audio Codec Controller
8 U23 North Bridge 20 JP31 Line-Out/Headphone/SPDIF Jackt
9 JP16 Internal Fan Connector 21 JP32...

Chapter 695
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurat ions of Aspire 7520/7220. 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 c heck 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...

96Chapter 6
Aspire 7520/7220 FRU List
CategoryNo.Part Name and DescriptionAcer Part No.
ADAPTER ADAPTER 65W 3PIN DELTA SADP-
65KB DBFFAP.06501.009
ADAPTER 65W 3PIN DELTA SADP-
65KB DFA AP.06501.013
ADAPTER 65W 3PIN LITEON PA-1650-
02LR AP.06503.012
ADAPTER 65W 3PIN LITEON PA-1650-
02AC AP.06503.016
ADAPTER 90W 3PIN LITEON PA-1900-
24AR  AP.09003.011
ADAPTER 90W 3PIN LITEON PA-1900-
04 LR AP.09003.006
ADAPTER 90W 3PIN LI SHIN 
SLS0202C19A20LF 90W AP.09001.003
ADAPTER 90W 3PIN DELTA ADP-90SB 
BBEA 90W 3P...