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PCL5100 MOTHERBOARD
Pentium® and Pentium®MMX processor ready
USER GUIDE
® ®
Intel and Pentium and Pentium MMX are registered trademarks of Intel
Corporation.
Information contained in this document is subject to change without notice
and does not represent a commitment on the part of Mitsubishi Electric.
http://www.mitsubishi-computers.com
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FEATURES AND UPGRADES This chapter describes the features of the PCL5100 motherboard and gives step-by-step instructions for adding more system or video memory, upgrading the processor, and replacing the configuration battery. Details of all relevant motherboard connectors and jumper settings are included. This motherboard and all its components extremely sensitive to static electricity. Observe strict antistatic precautions at all times when handling the board, or any components that you are re
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PCL5100 features and upgrades Motherboard features Video Parallel USB Com 1 (optional) Mouse Key/Bd Out In 18 1 17 16 2 15 14 PL11 3 PL4 PL3 13 4 12 PL19 11 5 6 PL201 PL 202 PL 18 7 8 9 10 1 Video memory sockets 11 Secondary E-IDE connector 2 Motherboard power connector 12 Primary E-IDE connector 3 VESA/AMC feature connector 13 CMOS battery 4 PSU logic connector 14 “Wake on LAN” connector 5 DIMM sockets 15 1.44 Mb diskette drive connector 6 Processor fan-sink connector 16 Second serial port conn
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PCL5100 features and upgrades Motherboard jumper settings There are only a few jumpers on the motherboard that you may need to alter. All others are set at the factory and should not be changed. On the motherboard, pin 1 of each jumper block is indicated by a small triangular marking. Processor voltage and bus speed (PL19, PL18) CAUTION Do not change these jumpers unless you have upgraded the processor. If they are set incorrectly the processor and other vital motherboard components could be des
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PCL5100 features and upgrades Processor Speed Jumper block PL19 BF1 BF0 FS PW2 PW1 PW0 Pentium 90 MHz High High In In In In Pentium 100 MHz High High Out In In In Pentium 120 MHz High Low In In In In Pentium 133 MHz High Low Out In In In Pentium 150 MHz Low Low In In In In Pentium 166 MHz Low Low Out In In In Pentium 200 MHz Low High Out In In In Pentium/MMX 166 MHz Low Low Out Out Out Out Pentium/MMX 200 MHz Low High Out Out Out Out Pentium/MMX 233 MHz High High Out Out Out Out On-board video d
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PCL5100 features and upgrades BIOS upgrade and recovery (PL11, PL3) These jumpers should not normally be changed except by a service engineer or at the direction of a service engineer. CMOS is cleared by moving the PL11 jumper to the 2-3 position for a few moments while the system is turned off, then returning it to the normal 1-2 position. Clearing CMOS PL11 CMOS battery connected (default) 1-2 CMOS battery disconnected 2-3 BIOS reprogramming PL3 Enabled (default) 1-2 (PROG) Disabled 2-3 (DIS)
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PCL5100 features and upgrades Motherboard IRQs and DMA channels Components Interrupts (IRQs) 0 1 2 3 4 5 6 7 8 9 1011 121314 15 System timer Keyboard controller PIC daisy chain Serial port 2 BS Serial port 1 BS Audio JS Diskette controller BS Parallel port BS Real time clock On-board video JS USB BS Mouse BS Co-processor Primary E-IDE BS Secondary E-IDE BS Components DMA channels 01 2 3 4 5 67 Audio JS Diskette controller BS Parallel port (ECP) BS DMAC daisy chain Fixed assignment Usual assig
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PCL5100 features and upgrades Adding more memory You can give your PC more memory by adding or replacing memory modules called “DIMMs”. The motherboard’s two DIMM sockets accept DIMMs of up to 128 Mbytes in any combination (giving a maximum memory capacity of 256 Mbytes). IMPORTANT The DIMMs you use must have the following specification: gold contacts, 3.3V, 64-bit, unbuffered, either SDRAM-type with Serial Presence Detect (SPD) and a CAS latency of 2 at 66 MHz or else EDO-type with 60 ns timing
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PCL5100 features and upgrades 3. Pushing gently on its top corners, press the DIMM into the socket and make sure the two end clips snap into place. Do not use excessive force. If the module will not fit easily, remove it and start again. To remove a DIMM 1. Press the tabs on both of the socket’s end clips at the same time. This will release the DIMM and lift it partly out of the socket. 2. Pull the DIMM clear of the socket. Hold the DIMM by its ends and avoid touching the metal contacts. 3. Pl
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PCL5100 features and upgrades Adding more video memory Video memory is memory reserved for use by the on-board video controller. More video memory can provide more colours or higher resolutions to an extent determined by the capabilities of your monitor. If your computer has 1 Mbyte of video memory, you can upgrade it to the maximum of 2 Mbytes. To add video memory 1. Turn off the computer and unplug all power cords. 2. Take suitable anti-static precautions and remove the system covers. Take sui
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PCL5100 features and upgrades Upgrading the processor The ZIF socket is designed to accept Pentium® processors (see the table earlier in this chapter). You may wish to upgrade your processor by replacing it with one of higher performance. Read the following instructions carefully before starting work. Changing the processor 1. Turn off the computer and unplug all power cords. 2. Take suitable anti-static precautions and remove the system covers. Take suitable antistatic precautions at all times
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PCL5100 features and upgrades 10. Separate the fan-sink from the processor by twisting the fan- sink from side to side to loosen the grip of the thermal bonding compound, then slide the fan-sink off to one side of the processor. WARNING When you remove the fan-sink there will be a residual deposit of thermal bonding compound on the bottom of the fan-sink and the top of the processor. This compound can cause skin irritation and stain clothing. Avoid prolonged or repeated contact with skin. Wash y
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PCL5100 features and upgrades 15. Move the securing lever to the locked position. Apply just enough pressure to overcome the resistance offered by the lever. 16. Reposition the fan-sink on top of the new processor. ◊ You may have either of two different types of fan-sink. Note that the larger fan-sink overhangs the socket at one side. 1 1 2 2 17. Re-fasten the fan-sink’s retention clip to the front and back of the ZIF socket. 12 PCL5100 USER GUIDE
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PCL5100 features and upgrades 18. Reconnect the fan-sink’s power cable to the motherboard. It goes on the connector labelled FAN 2 or PL200 as shown on the motherboard diagram. CAUTION If the fan-sink power cable is not reconnected properly the processor may overheat and be permanently damaged. 19. Adjust the processor voltage and bus speed selection jumpers in block PL19 as described at the start of this chapter. When you have finished, replace any expansion cards you needed to remove, then r
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PCL5100 features and upgrades To replace the battery 1. Turn off the computer and unplug all power cords. 2. Take suitable anti-static precautions and remove the system covers. Take suitable antistatic precautions at all times while the motherboard is exposed. 3. Remove any expansion cards or drives that may impede access to the battery. 4. Using a non-conductive implement, release the latch that holds the battery in place. The battery will pop up allowing you to lift it out of the holder. WARNI
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BIOS SETUP & POST BIOS (pronounced “bye-oss”) stands for ‘basic input/output system’. The BIOS mediates between the computer’s hardware – the processor, memory, and so on – and its software – the operating system and your programs. The BIOS program is kept in permanent, read-only memory or ROM (although if necessary it can be upgraded by an authorised maintainer). BIOS Setup is a helpful utility that forms part of the BIOS program. It allows you to view and alter the computer’s hardware configur
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PCL5100 BIOS Setup & POST BIOS Setup To start the BIOS Setup utility: 1. Turn on or restart your computer. 2. Wait until the Mitsubishi Electric logo appears on the screen. 3. Press the F2 key. 4. If you have previously defined a Supervisor password, you are prompted for it before BIOS Setup starts. If BIOS Setup starts on its own BIOS Setup might start on its own for three reasons: ♦ The power-on self-test (POST) detects a configuration error or fault. This may be signalled by one or more POS
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PCL5100 BIOS Setup & POST Changeable fields are enclosed in square brackets. To select an item, use the arrow keys to move the cursor to the field you want. Then use the PLUS (+) and MINUS (–) keys to select a value for that field. Press To F1 or ALT-H View a general help topic. Press ESC to close the help window. ESC Exit the current menu. LEFT or RIGHT arrow Select a different menu. UP or DOWN arrow Select fields on the current menu. PLUS (+) or F6 or SPACEBAR Select the next value for the cur
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PCL5100 BIOS Setup & POST Reserving ISA legacy resources To reserve interrupts and upper memory block (UMB) regions for ISA expansion cards, go to the Advanced menu, select PCI Configuration, then select PCI/PNP ISA IRQ Resource Exclusion or PCI/PNP ISA UMB Region Exclusion as required. Multi-boot facility Immediately after the first screen, a second screen displays various POST messages such as the memory test. While this screen is on display, a message at the bottom says: Press to enter s
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PCL5100 BIOS Setup & POST Power-on self-test Recoverable POST errors Whenever a recoverable (non-terminal) error occurs during POST, the BIOS displays an error message describing the problem (the most usual are described below). After some messages, you may be prompted to Press to resume, to enter Setup or just Press to enter Setup. In general, you should respond to these errors as follows: ♦ Shut down the computer, wait 20 to 30 seconds, and then turn it on again to see if the pr
