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System Board

1-7

Table 1-1

System Board Jumper Settings (continued)

Jumper

Setting

Function

CPU Type

JX1, JP8

JP10

JP11

JP12

JP13

2-3, 1-2
2-3, 2-3

1-2, 1-2
1-2, 2-3

Intel P54C

C/B=3/1
C/B=5/2

C/B=3/2

C/B=3/1

C/B=3/2, 3/3

C/B=2/1

C/B=1/1

Off

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

Connector

Function

CN4

Attachment Unit Interface (AUI)

CN5

Feature connector

CN6

Diskette drive connector

CN7

Enhanced IDE 2

CN8

Enhanced IDE 1

CN9

Power connector

CN10

SCSI connector

CN11

Power LED connector

CN12

Multifunction connector

Содержание M1A

Страница 1: ...transfer rate in burst mode The board has two memory banks composed of two 72 pin SIMM sockets each that support a maximum system memory of 128 MB using 32 MB SIMMs The onboard 1 MB video memory is upgradable to 2 MB for a higher video resolution The system board features a slot for the PCI ISA slot board and two Mode 4 PCI enhanced IDE interfaces that support up to four IDE devices A 50 pin Fast ...

Страница 2: ...nchronous or asynchronous second level cache 128 KB Flash ROM for system BIOS and VGA BIOS EISA type connector for the slot board that contains two PCI and three ISA slots for desktop housing or three PCI and 5 ISA slots for minitower housing Two Enhanced IDE interfaces that support up to four IDE devices System clock calendar with 128 256 bytes CMOS RAM External ports PS 2 keyboard mouse ports Tw...

Страница 3: ... 5 Fan connectors 6 SIMM sockets 7 CPU socket 8 Synchronous cache optional 9 CPU voltage regulator 10 Asynchronous cache 11 VGA BIOS1 12 Video upgrade sockets 13 Video RAM 14 Video port 15 Parallel port 16 COM 2 17 Slot board connector 18 COM 1 19 PS 2 mouse connector 20 PS 2 keyboard connector 21 RJ 45 connector Figure 1 1 System Board Layout 1 For SCSI models only ...

Страница 4: ... two PCI and three 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 minitower systems ...

Страница 5: ...mper 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 Connectors are prefixed CN The blackened pin of a jumper represents pin 1 ...

Страница 6: ...Type JP1 1 2 2 3 For models with Acer BIOS For models with OEM BIOS Password Security JP2 1 2 2 3 Enable password Disable password CPU Bus Frequency JP5 Open 1 2 2 3 50 MHz Pentium 75 MHz 60 MHz Pentium 90 120 150 MHz 66 MHz Pentium 100 133 166 MHz CPU Voltage JP7 1 2 2 3 VR 3 3V 5 0 VRE 3 45V 3 6V Reserved JP9 2 3 Fixed setting Do not reconfigure Reserved JP14 Open Leave open Do not reconfigure ...

Страница 7: ... B 2 1 C B 1 1 On Off On On Off On On Off Off On Off On 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 Connector Function CN4 Attachment Unit Interface AUI CN5 Feature connector CN6 Diskette drive connector CN7 Enhanced IDE 2 CN8 Enhanced IDE 1 CN9 Power connector CN10 SCSI connector CN11 Power LED...

Страница 8: ...he following electrostatic discharge ESD precautions before installing a system component 1 Do not remove a component from its antistatic packaging until you are ready to install it 2 Wear a wrist grounding strap before handling electronic components Wrist grounding straps are available at most electronic component stores Do not attempt the procedures described in the following sections unless you...

Страница 9: ...28 MB Table 1 3 lists the possible memory configurations 1 4 1 Rules for Adding Memory Use only one type of SIMM in a given bank You may combine different types of SIMMs for a memory configuration as long as the SIMMs in each bank are of the same type Always install SIMMs in pairs For example for a total memory of 8 MB install two 4 MB SIMMs into the sockets marked S5 and S4 bank 0 or S3 and S2 ba...

Страница 10: ...B 24 MB 8 MB 8 MB 8 MB 8 MB 32 MB 16 MB 16 MB 32 MB 16 MB 16 MB 32 MB 4 MB 4 MB 16 MB 16 MB 40 MB 16 MB 16 MB 4 MB 4 MB 40 MB 8 MB 8 MB 16 MB 16 MB 48 MB 16 MB 16 MB 8 MB 8 MB 48 MB 16 MB 16 MB 16 MB 16 MB 64 MB 32 MB 32 MB 64 MB 32 MB 32 MB 64 MB 4 MB 4 MB 32 MB 32 MB 72 MB 32 MB 32 MB 4 MB 4 MB 72 MB 8 MB 8 MB 32 MB 32 MB 80 MB 32 MB 32 MB 8 MB 8 MB 80 MB 16 MB 16 MB 32 MB 32 MB 96 MB 32 MB 32 M...

Страница 11: ...ing down into the socket labeled S5 Be careful when inserting SIMMs to avoid damaging the SIMM or the socket 2 Gently press the SIMM up until the pegs of the socket fit into the holes on the SIMM and the holding clips lock the SIMM into position The SIMM should be at a 90 angle when installed Figure 1 5 Installing a SIMM Hole Peg Clip ...

Страница 12: ...4 Removing a SIMM Follow these steps to remove a SIMM 1 Press the holding clips on both sides of the SIMM outward to release it 2 Move the SIMM to a 45 angle 3 Pull the SIMM out of the socket Figure 1 6 Removing a SIMM 1 2 3 ...

Страница 13: ...ress twice to exit and reboot the system The system boots with the new memory configuration 1 5 IDE Hard Disk Support The system board supports four IDE hard disks or any other IDE devices through the two onboard Enhanced IDE interfaces See Figure 1 3 for the location of the interfaces Follow the instructions in the housing installation manual on how to install a hard disk in the system Connect th...

Страница 14: ...the CPU into the socket Make sure that the notched corner of the CPU matches the pin 1 indicator on the socket Be careful not to bend any pins 3 Push down the socket lever Figure 1 7 Installing a Pentium CPU 4 Set jumpers JP3 according to the CPU speed and JX1 JP8 JP10 JP11 JP12 and JP13 for the correct CPU type Refer to Table 1 1 for the jumper settings STEP 1 STEP 2 STEP 3 Notched Corner Pin 1 I...

Страница 15: ...radable to 2 MB Follow these steps to upgrade the video memory 1 Locate the video DRAM upgrade sockets labeled U10 and U11 on the system board See Figure 1 1 2 Gently insert a video chip into each of the upgrade sockets Make sure that the pin 1 indicator on the chip matches the notched corner of the socket Figure 1 8 Installing a Video Memory Chip Pin 1 Indicator Notched Corner ...

Страница 16: ...ror 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 8 2 System Error Messages A system error message indicates a problem with the computer itself A message of thi...

Страница 17: ...tive If not replace the diskette drive Diskette Drive A Type Mismatch Run Setup and select the proper drive type Diskette Drive B Type Mismatch Run Setup and select the proper drive type Equipment Configuration Error Modify the memory configuration to agree with one of the options in Table 1 3 Hard disk Controller Error Run Setup Hard disk 0 Error Check all cable connections Replace hard disk Hard...

Страница 18: ...and reboot the system If the error message reappears seek technical assistance Onboard Serial Port 1 Conflict Run Setup and disable the port Onboard Serial Port 2 Conflict Run Setup and disable the port Onboard Parallel Port Conflict Run Setup and disable the port Pointing Device Error Check and connect pointing device Pointing Device Interface Error Replace the pointing device or contact your dea...

Страница 19: ...onfiguration is a major cause of power on error messages especially for a new system 2 Remove the system unit cover Check that the jumpers on the system board and any expansion boards are set correctly 3 If you cannot access a new disk it may be because your disk is not properly formatted Format the disk first using the FDISK and FORMAT commands 4 Check that all connectors and boards are securely ...

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