Acer Aspire 3300s Service Guide

							75Chapter 4
Undetermined Problems
If an error message is present, go to “POST Error Messages List” on page 69. If you did not receive any 
messages, see if the symptom is listed in  “Error Symptoms List” on page 71. If you still cannot solve the 
problem, continue with this check: 
1.Check the power supply voltages. If the voltages are correct continue with the following steps:
2.Power off the system unit. 
3.Perform the following checks, one by one, until you have isolated the  
problem FRU.
4.Load default settings in setup.
5.Check all main board jumper positions and switch settings. 
6.Check all adapter card jumper positions. 
7.Check all device jumper positions. 
8.Check all cables and connectors for proper installation. 
9.If the jumpers, switches and voltage settings are correct, remove or disconnect the following, one at a 
time: 
10.Non-Acer devices 
TExternal devices 
TAny adapter card (modem card, LAN card or video card, if installed)
TCD/DVD-ROM drive 
TDiskette drive 
THard disk drive 
TDIMM
TProcessor
TMain board
11 .Power on the system unit. 
12.Repeat steps 2 through 5 until you find the failing device or adapter. 
						

							Chapter 576
The mainboard provides connectors to connect to FDD, IDE HDD,   case,
modem, LAN, USB Ports, IR module and CPU/System FAN.
Floppy Disk Drive Connector: FDD1
The mainboard provides a standard floppy disk drive connector that
supports 360K, 720K, 1.2M, 1.44M and 2.88M floppy disk types.
Connectors
FDD1
Chassis Intrusion Switch Connector: J8
This connector is connected to 2-pin connector chassis switch. If the
Chassis is open, the switch will be short. The system will record this status. To
clear the warning, you must enter the BIOS setting and clear the status.
 J8
Jumper and Connector Information
Chapter 5 
						

							77Chapter 5
Hard Disk Connectors: IDE1 & IDE2
The mainboard has a 32-bit Enhanced PCI IDE and Ultra DMA 33/66/100
controller that provides PIO mode 0~4, Bus Master, and Ultra DMA33/66/100
function. You can connect up to four hard disk drives, CD-ROM, 120MB Floppy
(reserved for future BIOS) and other devices. These connectors support the
provided IDE hard disk cable.
IDE1 (Primary IDE Connector)
The first hard drive should always be connected to IDE1. IDE1 can
connect a Master and a Slave drive. You must configure second hard
drive to Slave mode by setting the jumper accordingly.
IDE2 (Secondary IDE Connector)
IDE2 can also connect a Master and a Slave drive.
TIP:
If you install two hard disks on cable, you must configure the
second drive to Slave mode by setting its jumper. Refer to the
hard disk documentation supplied by hard disk vendors for jumper
setting instructions.
IDE 2 
						

							Chapter 578
CD-In Connector: JCD1
The connector is for CD-ROM audio connector.
Aux Line-In Connector: JAUX1
The connector is for DVD add-on card with Line-in connector.
Modem-In Connector: JMD1
The connector is for modem with internal audio connector.
JCD1
GND
R
L
JAUX1
GND
R
L
JMD1GND
Phone_In
Mono_Out 
						

							79Chapter 5
Fan Power Connectors: CPUFA/SYSFA
The CPUFA (processor fan) & SYSFA (system fan) support system cool-
ing fan with +12V. It supports three-pin head connector. When connecting the
wire to the connectors, always take note that the red wire is the positive and
should be connected to the +12V, the black wire is Ground and should be
connected to GND. If the mainboard has a System Hardware Monitor chipset
on-board, you must use a specially designed fan with speed sensor to take
advantage of the CPU fan control.
Note:
1. Always consult the vendor for proper CPU cooling fan.
2. CPU Fan supports the fan control. You can install the PC Alert
utility that will automatically control the CPU Fan speed accord-
ing to the actual CPU temperature.
CPUFA
SENSOR
+12V
GND
SYSFA
SENSOR
+12V
GND 
						

							Chapter 580
Front Panel Connectors: JFP1 & JFP2
The mainboard provides front panel connectors for electrical connection
to the front panel switches and LEDs. Users can choose either the JFP1 or the
JFP2 depending on their needs. JFP1 is compliant with Intel
® Front Panel I/O
Connectivity Design Guide .
PINSIGNALDESCRIPTION
1 HD_LED_PHard disk LED pull-up
2 FP PWR/SLP MSG LED pull-up
3 HD_LED_N Hard disk active LED
4 FP PWR/SLP MSG LED pull-up
5 RST_SW_N Reset Switch low reference pull-down to GND
6 PWR_SW_P Power Switch high reference pull-up
7 RST_SW_P Reset Switch high reference pull-up
8 PWR_SW_NPower Switch low reference pull-down to GND
9 RSVD_DNUReserved. Do not use.
 JFP1 Pin Definition
Note for JFP2:
If onboard buzzer is available, you can short pins 4 &
6 to have the buzzer enabled or open pins 4 & 6 to
have the buzzer disabled.
JFP2
6
4
JFP2
Power
LED Speaker
Buzzer
(short pin)
1                      7 2                      8
JFP1
(Intel spec)1                            9 2                           10
HDD
LEDReset
Switch Power
LEDPower
Switch 
						

							81Chapter 5
Front Panel Audio Connector: JAUD
You can connect an optional audio connector to the Front Panel Audio
Header. JAUD is compliant with Intel® Front Panel I/O Connectivity Design
Guide.
JAUD
1                            9 2                            10
PINSIGNALDESCRIPTION
1 AUD_MICFront panel microphone input signal
2 AUD_GNDGround used by analog audio circuits
3 AUD_MIC_BIAS Microphone power
4 AUD_VCCFiltered +5V used by analog audio circuits
5 AUD_FPOUT_RRight channel audio signal to front panel
6 AUD_RET_RRight channel audio signal return from front panel
7 HP_ON Reserved for future use to control headphone amplifier
8 KEY No pin
9 AUD_FPOUT_L Left channel audio signal to front panel
10 AUD_RET_L Left channel audio signal return from front panel
 Pin Definition
CAUTION!!!
If you don’t want to connect to the front audio
header, pins 5 & 6, 9 & 10 have to be jumpered
in order to have signal output directed to the
rear audio ports.  Otherwise, the Line-Out con-
nector on the back panel will not function.
5 6
10
     9 
						

							Chapter 582
Front USB Connector: JUSB1 or JUSB2
The mainboard provides one front Universal Serial Bus connector for
users to connect to USB devices. Users can choose either the JUSB1 or the
JUSB2 depending on their needs. The JUSB1 is compliant with Intel
® Front
Panel I/O Connectivity Design Guide.
PinDescriptionPinDescription
1 VCC 2 VCC
3 USB0- 4 USB1-
5 USB0+ 6 USB1+
7 GND 8 GND
9 N C 10 OC0
JUSB1 Pin Definition
PinDescriptionPinDescription
1 VCC 2 GND
3 USB0- 4 GND
5 USB0+ 6 USB1+
7 GND 8 USB1-
9 GND 10 VCC
JUSB2 Pin Definition
10 2
    9    1
JUSB1
(Intel spec)
10 2
    9    1
JUSB2 
						

							83Chapter 5
IrDA Infrared Module Header: JIR1
This connector allows you to connect to IrDA Infrared modules and is
compliant with Intel® Front Panel I/O Connectivity Design Guide.  You must
configure the setting through the BIOS setup to use the IR function.
1            2
JIR1
5            6
PinSignal
1NC
2NC
3 VCC
4 GND
5 IRTX
6 IRRX
JIR1 Pin Definition 
						

							Chapter 584
Clear CMOS Jumper: JBAT1
There is a CMOS RAM on board that has a power supply from external
battery to keep the data of system configuration. With the CMOS RAM, the
system can automatically boot OS every time it is turned on. That battery has
long life time for at least 5 years.  If you want to clear the system configuration,
use the JBAT1 (Clear CMOS Jumper ) to clear data. Follow the instructions
below to clear the data:The motherboard provides one jumper for you to set the computer’s
function. This section will explain how to change your motherboard’s function
through the use of the jumper.
JBAT1
1
Keep Data 3 1Clear Data 3 1
You can clear CMOS by shorting 2-3 pin while the
system is off.  Then return to 1-2 pin position.  Avoid
clearing the CMOS while the system is on; it will dam-
age the mainboard.
WARNING!
Jumpers