MSI MS-7525 User Manual

Getting Started

Chapter 1

Getting Started

Thank you for choosing MS-7525 v1.XMicro ATX mainboard.
The mainboard is based on Intel® G31 & ICH7 chipsets for
optimal system efficiency. Designed to fit the advanced Intel

Wolfdale-M, Core 2 Duo, Pentium Dual Core, Celeron Dual
Core and Celeron processor, the mainboard delivers a high

performance and professional desktop platform solution.

®

1-1

MS-7525 Mainboard

Mainboard Specifications

Processor Support

- Intel® Wolfdale-M, Core 2 Duo, Pentium Dual Core, Celeron Dual
Core and Celeron in the LGA775 package.

(For the latest information about CPU, please visit http://global.

msi.com.tw/index.php?func=cpuform)

Supported FSB

- 1333/1066/ 800 MHz

Chipset

- North Bridge: Intel® G31 chipset

- South Bridge: Intel® ICH7 chipset

Memory Support

- DDR2 800/ 667 SDRAM (4GB Max)

- 2 DDR2 DIMMs (240pin)

(For more information on compatible components, please visit

http://global.msi.com.tw/index.php?func=testreport)

LAN

- Supports 10/ 100 Fast Ethernet by Realtek 8101E

Audio

- Chip integrated by Realtek® ALC662

- Azalia 5.1-channel audio with jack sensing

SATA

- SATAI and SATAII ports

- Supports storage and data transfers at up to 3.0 Gbps

Floppy

- 1 floppy port

- Supports 1 FDD with 360KB, 720KB, 1.2MB, 1.44MB and 2.88MB

1-2

Connectors

Back panel

- 1 PS/2 mouse port

- 1 PS/2 keyboard port

- 1 VGA port

- 4 USB 2.0 ports

- 1 LAN jack

- 3 flexible audio jacks

On-Board Pinheaders/ Connectors

- 2 USB 2.0 pinheaders

- 1 Front Panel Audio pinheader

- 1 SPDIF-Out pinheader

- 1 Debug pinheader

Slots

- 1 PCI Express x16 slot

- 2 PCI Express x1 slots

- 1 PCI slot (support 3.3V/ 5V PCI bus Interface)

Form Factor

- Mircro-ATX (9.6” X 8.6”)

Mounting

- 6 mounting holes

Getting Started

1-3

MS-7525 Mainboard

JPWD1

JUSB1

JUSB2

A

T

X

1SA

TA1SA

TA2SA

TA3

RTM876-665

B

Z

1

Mainboard Layout

Top : mouse
Bottom: keyboard

JVGA1

1
N
A
F
_
U
P
C

USB ports

Top: LAN jack
Bottom: USB ports

T:Line-In
M:Line- Out
B:MIC-Int

Fintek

F71882FG

ALC662

JPW1

SYS_FAN1

RTL8101E

PCI_E1

PCI _E2

PCI _E3

PCI 1

JSPD1

JAUD1

MS-7525 v1.X M-ATX Mainboard

BATT

+

FDD1

1

2

M

M

M

M

I

I

D

D

1
T
A
B

J

4
A
T
A
S

1

1

I

P

P

F

S

J

J

1-4

Getting Started

Buzzer (BZ1)

POST Beep Codes

To handle errors happened before the display becomes ready (e.g. memory configura­tion/init error, invalid CPU detection, no video or video failure, etc.), use a beep-and­pause method as defined in the table below:

Item Beep Definition Meaning Beep Pattern Example

1 short beep and 1 long beep

1

followed by long pause

2 short beeps and 1 long beep
followed by long pause

2

3 short beeps and 1 long beep
followed by long pause

3

1 short beep followed by short

4

pause
2 short beeps followed by long

5

pause
3 short beeps followed by long

6

pause

4 short beeps followed by long
pause

7

5 short beeps followed by long
pause

8

Bad memory or memory configu­ration error.

No graphics card installed or
graphics card initialization failed.

CPU configuration error or in­valid CPU detected before graph­ics card initialized.

No legacy floppy drive or optical
drive found.

No floppy diskette or CD found Repeat:(short) beep -> (short) pause ->

Flashing not ready (missing util­ity or BIOS image file, etc.)

Flashing operation has failed
(checksum error, corrupted
image, etc.)

BIOS Recovery was successful. Repeat:(short) beep -> (short) pause ->

Repeat:(short) beep -> (short) pause ->
(long) beep -> (long) pause

Repeat 5 times, then continue POST:
(short) beep -> (short) pause ->
(short) beep -> (short) pause ->
(long) beep -> (long) pause

Repeat:(short) beep -> (short) pause ->
(short) beep -> (short) pause ->(short)
beep -> (short) pause ->(long) beep ->
(long) pause

Repeat:(short) beep -> (long) pause

(short) beep -> (long) pause
Repeat:(short) beep -> (short) pause ->

(short) beep -> (short) pause ->(short)
beep -> (long) pause

Repeat:(short) beep -> (short) pause ->
(short) beep -> (short) pause ->(short)
beep -> (short) pause ->(short) beep ->
(long) pause

(short) beep -> (short) pause ->(short)
beep -> (short) pause ->(short) beep ->
(short) pause ->(short) beep -> (long)
pause

The duration of each beep or pause is defined as follows:

Beep / Pause Type Action

1 Short Beep Beeps for 1 second.
2 Short Pause Pauses for 1 second.
3 Long Beep Beeps for 3 seconds.
4 Long Pause Pauses for 3 seconds.

1-5

Hardware Setup

Chapter 2

Hardware Setup

This chapter provides you with the information about
hardware setup procedures. While doing the installation,
be careful in holding the components and follow the
installation procedures. For some components, if you
install in the wrong orientation, the components will not
work properly.

Use a grounded wrist strap before handling computer
components. Static electricity may damage the
components.

2-1

MS-7525 Mainboard

JPWD1

JUSB1

JUSB2

A

TX1SATA

1SATA2SATA3

RTM876-665

BZ1

Quick Components Guide

Back Panel
I/O, p.2-10

PCI_E,

p.2-17

PCI,

p.2-17

Top : mouse
Bottom: keyboard

JVGA1

USB ports

Top: LAN jack
Bottom: USB ports

T:Line-In
M:Line- Out
B:MIC-Int

Fintek

F71882FG

ALC662

JPW1, p.2-9

SYSFAN1,

p.2-12

JPW1

SYS_FAN1

RTL8101E

PCI_E1

PCI _E2

PCI _E3

PCI 1

JAUD1

JSPD1

CPU, p.2-3

BATT

+

CPUFAN1,

p.2-12

FDD1

DIMM1~2, p.2-7

1
N
A
F

_
U
P
C

1

2

M

M

M

M

I

I

D

D

4
A
T
A
S

1
T
A
B

J

1

1

I

P

P

F

S

J

J

ATX1,

p.2-9

BZ1,

p.1-5

JBAT1,

p.2-16

SATA1~4,

p.2-11

JFP1, p.2-13
JSPI1,

p.2-14

2-2

JAUD1,

p.2-14

JSPD1,

p.2-13

FDD1,

p.2-11

JPWD1,

p.2-12

JUSB1,2,

p.2-15

Hardware Setup

CPU (Central Processing Unit)

This mainboard supports Intel® processor in LGA 775 package. When you are install­ing the CPU, make sure to install the cooler to prevent overheating. If you do
not have the CPU cooler, consult your dealer before turning on the computer.
For the latest information about CPU, please visit http://global.msi.com.tw/index.

php?func=cpuform

Important

Overheating

Overheating will seriously damage the CPU and system. Always make sure
the cooling fan can work properly to protect the CPU from overheating. Make
sure that you apply an even layer of thermal paste (or thermal tape) between
the CPU and the heatsink to enhance heat dissipation.

Replaceing the CPU

While replacing the CPU, always turn off the ATX power supply or unplug the
power supply’s power cord from the grounded outlet first to ensure the safety
of CPU.

Overclocking

This mainboard is designed to support overclocking. However, please make
sure your components are able to tolerate such abnormal setting, while
doing overclocking. Any attempt to operate beyond product specifications is
not recommended. We do not guarantee the damages or risks caused

by inadequate operation or beyond product specifications.

Introduction to LGA 775 CPU

The pin-pad side of LGA 775
CPU.

Alignment Key Alignment Key

Yellow triangle is the Pin 1 indicator

The surface of LGA 775 CPU.
Remember to apply some ther­mal paste on it for better heat
dispersion.

Yellow triangle is the Pin 1 indicator

2-3

MS-7525 Mainboard

CPU & Cooler Installation

When you are installing the CPU, make sure the CPU has a cooler attached on
the top to prevent overheating. Meanwhile, do not forget to apply some thermal

paste on CPU before installing the heat sink/cooler fan for better heat dispersion.
Follow the steps below to install the CPU & cooler correctly. Wrong installation will
cause the damage of your CPU & mainboard.

1.The CPU socket has a plastic cap on
it to protect the contact from damage.
Before you install the CPU, always
cover it to protect the socket pin.

3.The pins of socket reveal.

2.Remove the cap from lever hinge
side (as the arrow shows).

4.Open the load lever.

Important

1.Confirm if your CPU cooler is firmly installed before turning on your system.

2. Do not touch the CPU socket pins to avoid damaging.

3. The availability of the CPU land side cover depends on your CPU packing.

2-4

Hardware Setup

5.Lift the load lever up and open the
load plate.

7.Visually inspect if the CPU is
seated well into the socket. If not,
take out the CPU with pure vertical
motion and reinstall.

6.After confirming the CPU direction
for correct mating, put down the
CPU in the socket housing frame.
Be sure to grasp on the edge of
the CPU base. Note that the align­ment keys are matched.

alignment

key

8.Cover the load plate onto the
package.

2-5

MS-7525 Mainboard

9.Press down the load lever lightly
onto the load plate, and then se­cure the lever with the hook under
retention tab.

11.Press the four hooks down to fas-

ten the cooler. Then rotate the lock­ing switch (refer to the correct di­rection marked on it) to lock the
hooks.

locking

switch

10. Align the holes on the mainboard
with the heatsink. Push down the
cooler until its four clips get
wedged into the holes of the
mainboard.

12.Turn over the mainboard to con­firm that the clip-ends are cor­rectly inserted.

Important

1. Read the CPU status in BIOS (Chapter 3).

2. Whenever CPU is not installed, always protect your CPU socket pin with the
plastic cap covered (shown in Figure 1) to avoid damaging.

3. Mainboard photos shown in this section are for demonstration of the CPU/
cooler installation only. The appearance of your mainboard may vary depend­ing on the model you purchase.

2-6

Hardware Setup

Empty

Installed

Memory

These DIMM slots are used for installing memory modules.
For more information on compatible components, please visit http://global.msi.com.

tw/index.php?func=testreport

DDR2

240-pin, 1.8V

64x2=128 pin 56x2=112 pin

Dual-Channel: Channel A in GREEN; Channel B in ORANGE

Dual-Channel mode Population Rule

In Dual-Channel mode, the memory modules can transmit and receive data with two
data bus lines simultaneously. Enabling Dual-Channel mode can enhance the system
performance. Please refer to the following illustrations for population rules under
Dual-Channel mode.

DIMM1
DIMM2

2-7

MS-7525 Mainboard

Installing Memory Modules

1. The memory module has only one notch on the center and will only fit in the right
orientation.

2. Insert the memory module vertically into the DIMM slot. Then push it in until the
golden finger on the memory module is deeply inserted in the DIMM slot.

Important

You can barely see the golden finger if the memory module is properly inserted
in the DIMM slot.

3. The plastic clip at each side of the DIMM slot will automatically close.

Volt

Notch

Important

-DDR2 memory modules are not interchangeable with DDR and the DDR2
standard is not backwards compatible. You should always install DDR2
memory modules in the DDR2 DIMM slots.

-In Dual-Channel mode, make sure that you install memory modules of the
same type and density in different channel DIMM slots.

-To enable successful system boot-up, always insert the memory modules
into the DIMM1 first.

- Due to the chipset resource deployment, the system density will only be
detected up to 1+GB (not full 2GB) when each DIMM is installed with a 1GB
memory module.

2-8

Power Supply

Hardware Setup

ATX 24-Pin Power Connector: ATX1

This connector allows you to connect an ATX 24-pin power supply.
To connect the ATX 24-pin power supply, make sure the plug of the
power supply is inserted in the proper orientation and the pins are
aligned. Then push down the power supply firmly into the connector.

You may use the 20-pin ATX power supply as you like. If you’d like
to use the 20-pin ATX power supply, please plug your power sup­ply along with pin 1 & pin 13 (refer to the image at the right hand).

Pin Definition

PIN SIGNAL

13 +3.3V
14 -12V
15 GND
16 PS-ON#
17 GND
18 GND
19 GND
20 Res
21 +5V
22 +5V
23 +5V
24 GND

ATX1

1

12

13

24

PIN SIGNAL

1 +3.3V
2 +3.3V
3 GND
4 +5V
5 GND
6 +5V
7 GND
8 PWR OK
9 5VSB
10 +12V
11 +12V
12 +3.3V

ATX 12V Power Connector: JPW1

This 12V power connector is used to provide power to the CPU.

Pin Definition

PIN SIGNAL

1 GND
2 GND
3 12V
4 12V

JPW1

4

2

3

1

pin 13

pin 12

Important

1. Make sure that all the connectors are connected to proper ATX power sup­plies to ensure stable operation of the mainboard.

2. Power supply of 350 watts (and above) is highly recommended for system
stability.

2-9

MS-7525 Mainboard

Back Panel

Mouse

Keyboard

VGA Port

LAN

USB Ports

Line-In

Line-Out

Mic

Mouse/Keyboard

The standard PS/2® mouse/keyboard DIN connector is for a PS/2® mouse/keyboard.

VGA Port

The DB15-pin female connector is provided for monitor.

USB Port
The USB (Universal Serial Bus) port is for attaching USB devices such as keyboard,
mouse, or other USB-compatible devices.

LAN
The standard RJ-45 LAN jack is for

Link IndicatorActivity Indicator

connection to the Local Area Network
(LAN). You can connect a network
cable to it.

LED Color LED State Condition

Off LAN link is not established.

Left Yellow On (steady state) LAN link is established.

On (brighter & pulsing) The computer is communicating with another computer on the LAN.

Right

Green

On

10 Mbit/sec data rate is selected.

100 Mbit/sec data rate is selected.On

Audio Ports
These audio connectors are used for audio devices. You can differentiate the color
of the audio jacks for different audio sound effects.

Line-In (Blue) - Line In, is used for external CD player, tapeplayer or other

audio devices.

Line-Out (Green) - Line Out, is a connector for speakers or headphones.
Mic (Pink) - Mic, is a connector for microphones.

2-10

Hardware Setup

Connectors

Floppy Disk Drive Connector: FDD1

This connector supports 360KB, 720KB, 1.2MB, 1.44MB or 2.88MB floppy disk drive.

FDD1

Serial ATA Connector: SATA1/ SATA2/ SATA3/ SATA4

This connector is a high-speed Serial ATA interface port. Each connector can connect
to one Serial ATA device.

SATA2SATA4

SATA1SATA3

Important

Please do not fold the Serial ATA cable into 90-degree angle. Otherwise,
data loss may occur during transmission.

2-11

MS-7525 Mainboard

Fan Power Connectors: CPUFAN1, SYSFAN1

The fan power connectors support system cooling fan with +12V. When connecting
the wire to the connectors, always 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.

CONTROL

SENSOR

+12V

GND

CPU_FAN1

+1 2V

SE NSOR

GND

SYSFAN1

Important

1.Please refer to the recommended CPU fans at processor’s official website
or consult the vendors for proper CPU cooling fan.

2.CPUFAN1 supports fan control. You can install Dual Core Center utility
that will automatically control the CPU fan speed according to the actual
CPU/System temperature.

3. Fan cooler set with 3 or 4 pins power connector are both available for

CPUFAN/SYSFAN.

BIOS Password Clear: JPWD1

1

2

JPWD1

The BIOS password protects the BIOS from undesired changes. If you need to clear
the BIOS password, use the following steps:

1. Turn off the PC and unplug the power cord.

2. Remove the JPWD1 jumper cap.

3. connect the power cord and turn on the PC.

4. Enter BIOS Setup Menu, you will find the previous password is cleared.

5.Turn off the PC and unplug the power cord.

6. Replace the JPWD1 jumper cap.

7. Turn on the PC and set a new password if necessary.

2-12

Hardware Setup

S/PDIF-Out Connector: JSPD1

This connector is used to connect S/PDIF (Sony & Philips Digital Interconnect Format)
interface for digital audio transmission.

JSPD1

SPDIF

GND

VCC

Front Panel Connectors: JFP1

These connectors are for electrical connection to the front panel switches and LEDs.
The JFP1 is compliant with Intel® Front Panel I/O Connectivity Design Guide.

JFP1

9

10

-

Power
Switch

Power
LED

JFP1 Pin Definition

PIN SIGNAL DESCRIPTION

1 HD_LED + Hard disk LED pull-up
2 FP PWR/SLP MSG LED pull-up
3 HD_LED - Hard disk active LED
4 FP PWR/SLP MSG LED pull-up
5 RST_SW - Reset Switch low reference pull-down to GND
6 PWR_SW + Power Switch high reference pull-up
7 RST_SW + Reset Switch high reference pull-up
8 PWR_SW - Power Switch low reference pull-down to GND
9 RSVD_DNU Reserved. Do not use.

+

+

Reset

-

Switch

-

HDD

+

LED

2

1

2-13

MS-7525 Mainboard

Front Panel Audio Connector: JAUD1

This connector allows you to connect the front panel audio and is compliant with
Intel® Front Panel I/O Connectivity Design Guide.

JAUD1

2
1

10

9

HD Audio Pin Definition

PIN SIGNAL DESCRIPTION

1 MIC_L Microphone - Left channel
2 GND Ground
3 MIC_R Microphone - Right channel
4 PRESENCE# Active low signal-signals BIOS that a High Definition Audio dongle

5 LINE out_R Analog Port - Right channel
6 MIC_JD Jack detection return from front panel microphone JACK1
7 Front_JD Jack detection sense line from the High Definition Audio CODEC

8 NC No control
9 LINE out_L Analog Port - Left channel
10 LINEout_JD Jack detection return from front panel JACK2

is connected to the analog header. PRESENCE# = 0 when a
High Definition Audio dongle is connected

jack detection resistor network

JSPI Debugging Pin Header: JSPI1

The pin header is for internal debugging only.

JSPI1

910

2 1

PIN SIGNAL PIN SIGNAL

1 VCC3_SB 2 VCC3_SB
3 SPI_MISO 4 SPI_MOSI_F
5 SPI_CSO_F# 6 SPI_CLK_F
7 GND 8 GND
9 Reserved 10 NC

JSPI1 Pin Definition

2-14

Hardware Setup

Front USB Connector: JUSB1 / JUSB2

This connector, compliant with Intel® I/O Connectivity Design Guide, is ideal for con­necting high-speed USB interface peripherals such as USB HDD, digital cameras,

MP3 players, printers, modems and the like.

JUSB2/1

2
1

PIN SIGNAL PIN SIGNAL

1 VCC 2 VCC
3 USB0- 4 USB1­5 USB0+ 6 USB1+
7 GND 8 GND
9 Key (no pin) 10 USBOC

10

9

Pin Definition

USB 2.0 Bracket

(Optional)

Important

Note that the pins of VCC and GND must be connected correctly to avoid
possible damage.

2-15

MS-7525 Mainboard

Jumpers

Clear CMOS Jumper: JBAT1

There is a CMOS RAM onboard that has a power supply from an 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. If you want to clear the system configuration,
set the jumper to clear data.

1

JBAT1

1

3

Keep Data

1

3

Clear Data

Important

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
damage the mainboard.

2-16

Hardware Setup

Slots

PCI (Peripheral Component Interconnect) Express Slot

The PCI Express slot supports the PCI Express interface expansion card.
The PCI Express x 16 slot supports up to 4.0 GB/s transfer rate.
The PCI Express x 1 slot supports up to 250 MB/s transfer rate.

PCI Express x16 Slot

PCI Express x1 Slot

PCI (Peripheral Component Interconnect) Slot

The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that
comply with PCI specifications.

32-bit PCI Slot

Important

When adding or removing expansion cards, make sure that you unplug the
power supply first. Meanwhile, read the documentation for the expansion card
to configure any necessary hardware or software settings for the expansion
card, such as jumpers, switches or BIOS configuration.

PCI Interrupt Request Routing

The IRQ, acronym of interrupt request line and pronounced I-R-Q, are hardware lines
over which devices can send interrupt signals to the microprocessor. The PCI IRQ
pins are typically connected to the PCI bus pins as follows:

Order 1 Order 2 Order 3 Order 4

PCI Slot 1 INT A# INT B# INT C# INT D#

2-17