Mitsubishi Electronics MS540 A/3, The components inside

T e c n i c a l I n f o r m a t i o n

5. Slide the top cover rearwards slightly, then lift it off.

Refitting the cover is simply the reverse of removal. Take effective anti-static precautions while the top cover is off.

7 2

	3	4		5	6
The components inside
1	System main board, for details see ‘appendix B’.		2	Processor and system cooling fan.
3	Multimedia interface board. (under front bezel).		4	Floppy disk drive, see chapter ‘The system drives’
5	CD-ROM drive, see chapter ‘The system drives’.		6	Hard disk drive, (below 5)
7	‘Power’ and ‘Standby / Restore’ switches		8	Power supply unit.
9	Rear audio sub-board see chapter ‘multimedia’.		10	Riser board, see chapter ‘Expansion’

For simplicity, ribbon and other cables are not shown in the above illustration

A/3

Contents

Page Page Page OWNER’S MANUAL CONTENTS THE BEGINNING THE SYSTEM DRIVES EXPANSION MEMORY UPGRADES TROUBLESHOOTING THE SYSTEM UNIT SYSTEM MOTHERBOARD SYSTEM BIOS AND SET-UP 1 THE BEGINNING Connections Turning on and booting the computer Energy Saving features Installing other software Turning the power off Cleaning and Transporting 1/7 1/8 Transporting the computer Never 1/9 2 THE SYSTEM DRIVES Using the floppy disk drive Hint Inserting a floppy disk 2/2 Using a CD-ROMdrive Inserting a compact disc 2/4 The hard diskdrive The primary hard drive A secondary hard drive 2/6 Software backup 3 SYSTEM EXPANSION Configuring the card ISA Interrupt request level (IRQ) IRQ Default assignment Available 3/3 Direct memory access (DMA) channel DMA Base input/output (I/O) port address 3/4 I/O ports Base memory address 3/5 Installing the card 3/7 Do not use excessive force 3/8 4 MEMORY UPGRADES Adding more system memory Installing and removing SIMMs 4/2 To install a SIMM 4/3 Do not use excessive force Adding more cache memory 4/6 Adding more video memory It is extremely important that the chips are fitted the right way round 4/8 5 MULTIMEDIA The CD-ROMdrive Photo CDs 5/2 The sound connections Remote control The Remote Control Changing the batteries Television (if fitted) Radio card (If fitted) 6 TROUBLESHOOTING Problems when starting 6/2 Restoring the Software Troubleshooting checklist two AA 6/4 The system’s disk drives Television card (if fitted) Software security your first 6/7 A THE SYSTEM UNIT Anti-staticprecautions Opening the system unit The components inside A/3 Drive Specification summary Floppy disk drive CD-ROMdrive A/4 Physical Characteristics (system unit) Weight and dimensions Temperature and Humidity ranges Voltage range B SYSTEM MOTHERBOARD Board Specification Audio Drives Ports Expansion B/2 Board layout B/3 System Ports Keybord and Mouse ports Monitor port PIN Output Monochrome Jumper configurations BIOS reprogramme Clear BIOS settings VESA option must be replaced Pin 1Â Â Pin 1 Â Â Pin 1Â Â Pin 1 Â Â Â Pin 1Â Â Â PL24, PL28 Replacing the CMOS battery To replace the battery Do not System BIOS and set-up’ B/9 C SYSTEM BIOS AND SET-UP Entering Set-up Control keys Set-upstarts on its own Opening screen Sub-menupages HDD’s Compatible High performance Extended System security C/6 User Password changeable by User Start Options C/7 Diskette drive 0 ; Hard disk 0 (i.e. A: then C:) Quick Enhanced It is not an infallible check Advanced Set-up Enabled ISA Legacy Resources Available Not available C/9 Power Management C/10 Error Messages