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...

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...

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...

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...

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...

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...

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...

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...