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...
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.
P C L 5 1 0 0 f e a t u r e s a n d u p g r a d e s Motherboard features Video PL19 PL 202 PL 18 Video memory sockets Motherboard power connector VESA/AMC feature connector PSU logic connector DIMM sockets...
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.
P C L 5 1 0 0 f e a t u r e s a n d u p g r a d e s Processor Speed Pentium 90 MHz Pentium 100 MHz Pentium 120 MHz Pentium 133 MHz Pentium 150 MHz Pentium...
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.
P C L 5 1 0 0 f e a t u r e s a n d u p g r a d e s Motherboard IRQs and DMA channels Components System timer Keyboard controller PIC daisy chain Serial port 2 Serial port 1 Audio Diskette controller...
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...
P C L 5 1 0 0 f e a t u r e s a n d u p g r a d e s 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.
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.
P C L 5 1 0 0 f e a t u r e s a n d u p g r a d e s Upgrading the processor The ZIF socket is designed to accept Pentium® processors (see the table earlier in this chapter).
P C L 5 1 0 0 f e a t u r e s a n d u p g r a d e s 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.
P C L 5 1 0 0 f e a t u r e s a n d u p g r a d e s 15. Move the securing lever to the locked position. Apply just enough pressure to overcome the resistance offered by the lever.
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.
P C L 5 1 0 0 f e a t u r e s a n d u p g r a d e s To replace the battery Turn off the computer and unplug all power cords. Take suitable anti-static precautions and remove the system covers.
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).
P C L 5 1 0 0 B I O S S e t u p & P O S T BIOS Setup To start the BIOS Setup utility: Turn on or restart your computer. Wait until the Mitsubishi Electric logo appears on the screen. Press the If you have previously defined a Supervisor password, you are prompted for it before BIOS Setup starts.
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 Press 1 or LEFT DOWN (+) or PLUS MINUS ENTER HOME PAGE UP CAUTION The default BIOS settings may not be appropriate for your particular system.
P C L 5 1 0 0 B I O S S e t u p & P O S T 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.
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 <F1> to resume, <F2> to enter Setup or just Press <F2>...
P C L 5 1 0 0 B I O S S e t u p & P O S T Incorrect drive A type - run SETUP The diskette drive is not correctly specified in BIOS Setup. Invalid NVRAM media type Problem with NVRAM (non-volatile random-access memory).
Terminal POST errors and beep codes There are several POST routines that shut down the computer if they fail. If possible, the BIOS displays a two-digit hexadecimal code and/or sounds a sequence of beeps to identify the point at which POST failed. The most usual errors are listed below. The BIOS also issues one long tone followed by two short tones if the video system is faulty or if an external ROM module (including video ROM) fails.
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