User manual ACER ASPIRE M1641

[. . . ] The SIMM sockets accommodate both the standard page mode and extended data output (EDO) type SIMMs. The board supports a standard 256KB asynchronous or an optional 256-KB pipeline burst mode secondlevel cache. The system board includes a 188-pin connector for the slot board that contains the PCI and ISA bus slots. [. . . ] The two onboard PCI-enhanced IDE interfaces with a zero-wait state and 16. 6 MB per second transfer rate support up to four IDE devices. Onboard I/O interfaces comprise of two UART 16550 serial ports, a parallel port with ECP/EPP feature, and PS/2 keyboard and mouse ports. System Board 1-1 1. 1 · · · · · · · · · · · Major Features A zero-insertion force (ZIF) socket for P54C, P54CTB, or P54CS CPU Two DRAM banks composed of four 72-pin SIMM sockets that support 4/8/16/32-MB 60/70ns SIMMs 256-KB write-back asynchronous second-level cache 128-KB boot block mode Flash ROM for system and VGA BIOS Two PCI-enhanced IDE interfaces that support up to four IDE devices System clock/calendar with 128 bytes CMOS RAM Interfaces for CD-audio, fax/voice modem, and WaveTable support Standard 1-MB video DRAM onboard plus two upgrade sockets for up to 2-MB video memory 188-pin connector for PCI/ISA slot board Feature socket for multimedia or Ethernet solution External ports: · · · · PS/2 keyboard and mouse ports Two buffered high-speed serial ports One ECP/EPP high-speed parallel port Video port The system board has the following major features: 1-2 User's Guide 1. 1. 1 Layout Figure 1-1 shows the locations of the system board major components. 1 2 3 4 5 6 7 8 9 10 Second-level cache Buzzer CPU voltage regulator Fan connector SIMM sockets 321-pin ZIF CPU socket 3. 3V battery Video memory upgrade sockets Onboard video memory Video port 11 12 13 14 15 16 17 18 Parallel port COM2 Slot board connector COM1 PS/2 mouse connector PS/2 keyboard connector RJ-45 phone jack Feature socket for multimedia or Ethernet solution Figure 1-1 System Board Layout System Board 1-3 1. 1. 2 Slot Board The system board comes with a slot board already installed. The slot board carries the PCI and ISA bus slots for system enhancements and future expansion. The slot board may vary in size and layout depending on your system housing. Figures 1-2 and 1-3 show the two kinds of slot boards. Figure 1-2 2-PCI/3-ISA Slot Board (for desktop systems) Figure 1-3 3-PCI/5-ISA Slot Board (for mini-tower systems) 1-4 User's Guide 1. 2 1. 2. 1 Jumpers and Connectors Jumper and Connector Locations Figure 1-4 shows the jumper and connector locations on the system board. Figure 1-4 System Board Jumper and Connector Locations Jumpers are prefixed "JP". The blackened pin of a jumper represents pin 1. System Board 1-5 1. 2. 2 Jumper Settings Table 1-1 lists the system board jumpers with their corresponding settings and functions. Table 1-1 System Board Jumper Settings Setting 1-2* 2-3 1-2 2-3* 1-2 2-3* Function For models with Acer BIOS For models with OEM BIOS Check password Bypass password (For Intel 28F001 only) Jumper BIOS Type JP1 Password Check JP2 Boot Block Feature1 JP3 Enable Flash ROM boot block feature Disable Flash ROM boot block feature EPROM Flash ROM (Intel 28F010, 28F001) Flash ROM (SST 29EE010) BIOS ROM Type JP5 1-2 2-3 3-4* CPU Core/Host Bus Frequency JP4 1-4 2-5* 3-6 1-2*, 1-2* 75/50 MHz 90/60, 120/60, 150/60 MHz 100/66, 133/66, 167/66 MHz 256 KB All other setting combinations are reserved. Second-level Cache JP6, JP7 * 1 Default setting The boot block feature works only for Intel 28F001 Flash ROM and requires JP5 to be set to pins 2-3. 1-6 User's Guide Table 1-1 Jumper CPU Type JP8 System Board Jumper Settings (continued) Setting 1-2* 2-3 Function Intel P54C or AMD K5 Cyrix M1 Intel P54C Intel P55C M1 and K5 CPU Core / Local Bus Clock Ratio JP16, JP19 1-2*, 1-2* 1-2, 2-3 2-3, 1-2 2-3, 2-3 3/2 2/1 3/1 5/2 3/1 2/1 3/2, 2/1, 3/1 1/1 CPU Voltage JP21 LED Support JP23 1-2* 2-3 1-2 2-3* 3. 3825V for VR and standard CPU type 3. 5250V for VRE CPU type For IDE and diskette drives For IDE drive only The jumpers JP10 ~ JP15 and JP17 are always closed if there is no voltage regulator module (VRM) present. * Default setting System Board 1-7 1. 2. 3 Connector Functions Table 1-2 lists the different connectors on the system board and their respective functions. Table 1-2 Connector Functions Function Audio-I/O board connector Fax/voice modem connector Video feature connector WaveTable connector CD-audio line-in connector Feature connector for multimedia or Ethernet solution IDE channel 1 IDE channel 2 Diskette drive connector Power connector Standby power connector Multifunction connector IrDA connector Hard disk drive LED connector Hard disk drive LED connector (generic) SMM switch/Reset switch Connector CN1 CN2 CN4 CN5 CN6 CN7 CN8 CN9 CN10 CN11 CN12 CN14 CN15 CN16 CN17 CNX1 1-8 User's Guide The multifunction connector CN14 accommodates the front panel connectors for speaker, LEDs, keylock, reset, and turbo. Figure 1-5 shows the CN14 pin assignments for each of the front panel connectors. Figure 1-5 20-Pin Multifunction Connector (CN14) The connector CNX1 functions as SMM switch, as reset switch, or both, depending on the settings. Figure 1-6 shows the CNX1 settings with their corresponding functions. SMM Switch (1-2) Reset Switch (3-4) SMM Switch (1-2) Reset Switch (3-4) Front Panel Reset Switch Figure 1-6 SMM/Reset Connector (CNX1) System Board 1-9 1. 3 ESD Precautions (ESD) Always observe the following electrostatic discharge precautions before installing a system component: 1. 2. Do not remove a component from its antistatic packaging until you are ready to install it. Figure 1-11 shows the four audio connectors on the system board. 1 2 3 4 Fax/voice modem connector Audio-I/O board connector WaveTable connector CD audio connector Figure 1-11 Audio Connectors Onboard System Board 1-17 1. 8. 1 Audio-I/O Board Features The audio-I/O board consists of microphone port, line-in port, line-out port, and MIDI/game port. Figures 1-12 and 1-13 show the different audio-I/O boards that may come with the system. Microphone Port Line-in Port Line-out Port MIDI/Game Port Figure 1-12 Audio-I/O Board Without Internal Connectors 1-18 User's Guide Microphone Connector Microphone Port Line-in Port Line-out Port Line-in Connector MIDI/Game Port Line-out Connector Figure 1-13 Audio-I/O Board With Internal Connectors The audio-I/O board with internal connectors is particularly useful for system housings with built-in speakers, microphone, amplifier, or auxiliary devices. With the internal audio connectors functioning exactly as the external audio ports, you can utilize all the sound features supported by the system board. Since external speakers, microphone, and other audio devices give better sound quality, the external audio ports take higher priority than the internal connectors. When you attach external audio devices to the ports, the internal audio devices are automatically disabled. System Board 1-19 1. 8. 2 Audio-I/O Devices Figure 1-14 shows the various devices that you can connect to the audio-I/O board. Microphone Synthesizer CD Player Stereo Amplifier Head phones Joystick Speakers MIDI Adapter Figure 1-14 Audio I/O External Devices 1-20 User's Guide 1. 9 Error Messages Do not continue using the computer if you receive an error message of any type. This section explains the different types of error messages and corresponding corrective measures. There are two general types of error messages: · · Software System 1. 9. 1 Software Error Messages Software error messages are returned by your operating system or application. These messages typically occur after you boot the operating system or when you run your applications. If you receive this type of message, consult your application or operating system manual for help. 1. 9. 2 System Error Messages A system error message indicates a problem with the computer itself. [. . . ] If you receive this type of message, consult your application or operating system manual for help. 1. 9. 2 System Error Messages A system error message indicates a problem with the computer itself. A message of this type normally appears during the power-on self-test, before the operating system prompt appears. Table 1-5 lists the system error messages. System Board 1-21 Table 1-5 System Error Messages Message Action Replace the RTC chip or contact your dealer. [. . . ]