Acer V70MA Manual de usuario
V70MA System Board
V70MA System Board 1
The V70MA is an all-in-one, high-performance system board that
supports the Intel Pentium processor with MMX (MultiMedia
eXtensions) technology. The MMX feature enables the system to
handle multimedia functions and enhance the performance of 32-bit
applications.
The system memory is upgradable to 256 MB via the onboard two
168-pin DIMM (Double In-line Memory Module) sockets. These
sockets accommodate 8-, 16-, 32-, 64- and 128-MB DIMMs. The
system board also comes with 512-KB second-level cache already
integrated in the CPU.
To fully support multimedia functions, the board incorporates a high-
performance 3-D video controller with AGP (Accelerated Graphics
Port) feature, 2- or 4-MB SGRAM (Synchronous Graphics Random
Access Memory), and a 3-D audio controller.
Onboard I/O (input/output) interfaces are comprised of two UART
(Universal Asynchronous Receiver-Transmitter) 16C550 serial
interfaces (one port and one connector), a parallel port with SPP
(Standard Parallel Port)/ECP (Extended Capabilities Port)/EPP
(Enhanced Parallel Port) support, and PS/2 keyboard and mouse
ports. Two USB (Universal Serial Bus) ports, one VGA (Video
Graphics Accelerator) port, one Feature connector, one Microphone-in
port, one Line-in port, one Line-out port, and one Game/MIDI (Musical
Instrument Digital Interface) port are also added to the board design to
enable the system to support additional peripherals.
For expansion, the board comes with two ISA (Industry Standard
Architecture) slots and one PCI (Peripheral Component Interface) slot.
Special features such as PnP (Plug-and-Play) support, Power
Management, Wireless Communication, Hardware Monitoring, Wake-
on Ring, and Wake-on LAN (Local Area Network) functions are also
supported. These functions are individually discussed in this chapter.
2 User’s Guide
The system is fully compatible with MS-DOS V6.X, OS/2, SCO UNIX,
Windows NT, and Windows 95/98 operating systems.
1 Major Components
The system board has the following major components:
•A Zero Insertion Force (ZIF) CPU socket that accommodates
Intel, AMD, or Cyrix/IBM Pentium CPU with MMX technology,
running at 233, 250, 266, 300, 333, or 350 MHz
•Two DIMM sockets that accept 8-, 16-, 32-, 64-, and 128-MB
Standard DRAMs, with Parity Check or Error Correction Code
(ECC) feature. These sockets allow memory upgrade of up to
256 MB
•512-KB second-level cache
•PCI local bus IDE (Integrated Device Electronics) controller
•3-D audio controller
•AGP-compliant 3-D video graphics accelerator with 2- or 4-MB
SGRAM
•One Feature connector
•One Wake-on LAN connector
•One Modem ring-in connector
•One CD-in connector
•One PCI audio upgrade connector
•One Voice Modem connector
•One IrDA (InfraRed Data Association) connector for Wireless
Communication support
•Two PCI enhanced IDE interfaces that support up to four IDE
devices
•External ports
•PS/2 keyboard and mouse ports
V70MA System Board 3
•One buffered high-speed serial port
•One SPP/ECP/EPP high-speed parallel port
•Two USB ports
•One standard VGA port
•One Microphone-in port
•One Line-in port
•One Line-out port
•One Game/MIDI port
•Two ISA slots and one PCI slot (one PCI-/ISA-shared)
4 User’s Guide
2 System Board Layout
Figure 1 shows the locations of the major components on the system
board.
1 USB ports
2 PS/2 mouse/keyboard port
3 Parallel port
4 VGA port
5 COM2 port
6 Game/MIDI port
7 Line-out port
8 Line-in port
9 Microphone-in port
10 Second-level cache (pipeline-burst)
11 Fax/voice connector
12 CD-in connector
13 3-D audio controller
14 External CS4610 connector
15 Volume control connector
16 ISA slots
17 PCI slot
18 System BIOS chip
19 PCI-to-ISA bridge controller
20 CPU socket
21 Voltage controller with heatsink
22 IDE 1 connector
23 IDE 2 connector
24 FDD connector
25 Modem ring-in connector
26 Buzzer
27 Battery
28 Power button/ Reset/ Turbo/ HDD/
Power, Suspend LED/IrDA connector
29 Wake-up On LAN connector
30 ATX power connector
31 DIMM sockets
32 Video memory
33 PCI, AGP, memory controller
34 3-D AGP video controller
35 ATI AMC feature connector
36 Tag RAM
37 CPU fan connector
Figure 1 System Board Layout
1234 5 67 8 9
10 1112 13 14
16 1
7
18
19
20
35 3
4
3
3
32
31 302
9
28 2
7
2625 2
4
23 22
21
1
5
36
37
V70MA System Board 5
3 Jumpers and Connectors
3.1 Jumper and Connector Locations
Figure 2 shows the jumper and connector locations on the system
board.
Figure 2 System Board Jumper and Connector Locations
The blackened pin of a jumper or a connector
represents pin 1.
6 User’s Guide
3.2 Jumper Settings
The following table lists the possible jumper settings:
Table 1 Jumper Settings
Jumper Setting Function
JP1 1-2 *
2-3
VGA Interrupt
Disabled
Enabled
JP2 1-2
2-3 *
Wake-on LAN
Active low
Active high
JP4 1-2, 4-5
2-3, 5-6 *
Audio Line-in Source
AMC connector
Line-in connector
JPX1 1-2
2-3 *
CPU Type
AMD K6S-300
Other CPUs
SW1 Settings
B1 On
Off *
Hardware Monitor
Enabled
Disabled
Bus Frequency (MHz)
CY2283-1
B2 B3 B4 CPU AGP PCI
Clk. Clk. Clk.
Off On Off 66 66 33
Off Off Off 75 60 30
On On Off 83 66 33
On
*Off
*Off
*100 66 33
ICS9148-16
B2 B3 B4 CPU AGP PCI
Clk. Clk. Clk.
Off On On 66 66 33
On On Off 75 60 30
Off On Off 83 66 33
Off Off Off 100 66 33
*Default setting
V70MA System Board 7
Table 1 Jumper Settings (continued)
SW2 Settings
CPU Core Clock Multiplier CPU Type
B1 B2 B3 K6 M2 P55C
Off Off Off 3.5 3.5 3.5
On Off On 4.0 2.0 2.0
Off *On
*Off
*3.0
*3.0 3.0
On On Off 2.5 2.5 2.5
On On On 4.5 -- --
On Off Off 2.0 -- --
Off On On 5.0 -- --
Off Off On 5.5 -- --
CPU Core Voltage
B4 B5 B6 B7 B8 Voltage
Off On On Off On 3.3
Off On On Off Off 3.2
Off On Off Off On 2.9
Off On Off Off Off 2.8
Off Off Off On On 2.3
Off *Off *Off *On *Off *2.2 *
SW3 Settings
AMD K6S-300 Voltage Select
B1 Voltage
On *3.45V
Off 3.6V
Password Checking
B2 Function
On Check password
Off *Bypass password
M1542 Bus Frequency
B3 B4 Frequency
Off Off 66
On *On *100
*Default setting
8 User’s Guide
3.3 Onboard Connector Functions
Table 2 lists the onboard connectors and their respective functions.
Table 2 System Board Connectors
Connector Function
CN1 USB port
CN2 Power LED (pins 1-3)
HDD LED (pins 4-7)
Reset button (pins 8-9)
Power button (pins 10, 20)
IrDA connector (pins 14-19)
Turbo LED (pins 11-13)
CN3 Upper: PS/2 mouse port
Lower: PS/2 keyboard port
CN4 ATX power connector
CN5 ATI AMC feature connector
CN6 Upper: Parallel port
Lower: VGA port (right)
COM2 port (left)
CN7 Wake-on LAN connector
CN8 COM1 port
CN9 Modem ring-in connector
CN10 IDE2 connector
CN11 IDE1 connector
CN12 Floppy disk drive connector
CN13 Upper: Game/MIDI port
Lower: (R-to-L)
Microphone-in port
Stereo line-in port
Stereo line-out port
CN14 Fax/voice connector
CN15 CD-in connector
CN16 Volume control connector
CN17 External CS4610 connector
FN1 2-pin CPU fan connector
FN2 5-pin CPU fan connector
V70MA System Board 9
4 Installation Precautions
Before you install any system component, we recommend that you
read the following sections. These sections contain important ESD
precautions, pre- and post-installation instructions.
4.1 ESD Precautions
Electrostatic discharge (ESD) can damage your processor, disk drives,
expansion boards, and other components. Always observe the
following precautions before you install a system component:
1. Do not remove a component from its protective packaging until
you are ready to install it.
2. Wear a wrist grounding strap and attach it to a metal part of the
system unit before handling components. If a wrist strap is not
available, maintain contact with the system unit throughout any
procedure requiring ESD protection.
4.2 Pre-installation Instructions
Always observe the following before you install a system component:
1. Turn off the system power and all the peripherals connected to
the unit before opening it.
2. Open the system according to the instructions in the housing
installation manual.
3. Follow the ESD precautions in section 4.1 before handling a
system component.
4. Remove any expansion boards or peripherals that block access
to the DIMM sockets or CPU connector.
5. See the following sections for specific instructions on the
component you wish to install.
10 User’s Guide
Do not attempt the procedures described in
the following sections unless you are a
qualified service technician.
4.3 Post-installation Instructions
Observe the following after installing a system component:
1. See to it that the components are installed according to the step-
by-step instructions in their respective sections.
2. Make sure you have set all the required jumpers. See section 3.2
for the correct jumper settings.
3. Replace any expansion boards or peripherals that you removed
earlier.
4. Replace the system cover.
5. Connect the necessary cables and turn on the system.
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