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Acer Aspire 7720g Service Guide

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Page 91

Chapter 485
Battery can’t be charged See “Check the Battery Pack” on page 75. 
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...

Page 92

86Chapter 4
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
Problems” on page 88.
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...

Page 93

Chapter 487
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...

Page 94

88Chapter 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...

Page 95

Chapter 589
Top View
1 JP1 LCD Connector 9 JP36 Mainboard to LED Board 
Connector
2 JP3 Speaker (Left) Connector 10 U12
3 JP34 Speaker (Right) Connector 11 JP9 PCI Express Card Socket
4 JP4 Internal MIC Connector 12 LED1 Power/Suspend LED
5 U5 South Bridge (ICH8M) 13 LED2 Battery Charge/Discharge LED
6 JP6 Internal Track-Pad Connector 14 JP13 Mainboard to Audio Board 
Connector
7 JP5 Internal Keyboard Connector 15 JP11 Mainboard to USB Board 
Connector
8 JP2 Mainboard to Button Board 
Connector16 JP12...

Page 96

90Chapter 5
Bottom View
1 PJP1 DC-in Power Jack 14 JP24 TV-out Connector
2 PJP2 Battery Connector 15 JP26 IEEE1394 Connector
3 JP14 CRT Connector 16 JP27 SATA HDD Connector
4 JP15 DVI-D Connector 17 U23 North Bridge (965PM/965GM)
5 JP25 ODD Connector 18 U28
6 JP20 Mini Card (WLAN) Socket 19 U29 Volume Control
7 JP19 Mini Card (TV-Tuner) Socket 20 JP28 DDRII Memory Socket
8 JP17 MDC Connector 21 JP29 DDRII Memory Socket
9 JP22 CPU Socket 22 JP31 Headphone/SPDIF Jack
10 JP16 Internal Fan Connector 23 JP32...

Page 97

Chapter 691
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of Aspire Poyang. 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...

Page 98

92Chapter 6
Aspire Poyang Exploded Diagram
CategoryNo.Part Name and DescriptionAcer Part No.
ADAPTER
ADAPTER 90W 3PIN DELTA ADP-90SB 
BBACAP.09001.003
ADAPTER 90W 3PIN DELTA ADP-90SB 
BBEAAP.09001.013
ADAPTER 90W 3PIN LITEON PA-1900-
24ARAP.09003.006
ADAPTER 90W 3PIN LITEON PA-1900-
04 LRAP.09003.011
BATTERY
BATTERY LI-ION 6CELLS 4KMAH 
PANASONIC PA 3S2P 4.0AH 7 01K 0FABT.00605.015
BATTERY LI-ION 6CELLS 4KMAH 
SANYO SA 3S2P 4AH 7 01K 0FABT.00603.033
BATTERY LI-ION 6CELLS 4KMAH 
SIMPLO SP PA 3S2P 4.0AH 7...

Page 99

Chapter 693
MINI WLAN/B INTEL 802.11 4965ANG 
ROW (MM#886434)KI.KDN01.003
MINI WLAN/B INTEL 802.11 4965ANG 
JP (MM#886437)KI.KDN01.004
BUTTON BOARD W/CABLE 17 55.AHJ02.001
AUDIO BOARD 17 55.AHJ02.002
LED BOARD W/CABLE 17 55.AHJ02.003
USB BOARD FOR TV 17 55.AHJ02.004
USB BOARD FOR W/O TV 55.AHJ02.005
RF BOARD FOR DTV 55.AHJ02.006
ODD BOARD 17 55.AHJ02.007
HDD BOARD 17 55.AHJ02.008
VGA BOARD-M71M 128MB VG.71M02.002
VGA BOARD-M71M 256MB W/HDCP VG.71M02.001
CABLE
RJ11 CABLE 17 50.AHJ02.001
FFC CABLE - T/P TO...

Page 100

94Chapter 6
BLUE TOOTH CABLE 17 50.AHJ02.003
AUDIO CABLE 17 50.AHJ02.004
USB CABLE 17 50.AHJ02.005
RF CABLE 17 50.AHJ02.006
7 PIN MINI-DIN S-VIDEO TO 4 CABLE 50.ABD02.001
PAL TO NTSC CONNECTOR 20.ABD02.001
SMB JACK 50.ABD02.002
DVB-T ANT  50.ABD02.003
DC-IN CABLE (90W) UMA/DIS 50.AHH02.001
POWER CORD US 3 PIN 27.TAVV5.001
POWER CORD EU 3 PIN 27.TAVV5.002
POWER CORD AUS 3 PIN 27.TAVV5.003
POWER CORD UK 3 PIN 27.TAVV5.004
POWER CORD CHINA 3 PIN 27.TAVV5.005
POWER CORD SWISS 3 PIN 27.TAVV5.006
POWER CORD...
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