ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢀꢁꢂꢃꢄꢅꢆꢁꢇ ꢆꢈꢃꢉꢊꢋꢁꢄꢌꢈꢅꢆꢇꢌꢄꢍꢎꢃꢀ
ꢉꢃꢇꢃꢈꢁꢋ
This product contains a lithium battery.
Do not use a metal or other conductive implement to remove the battery. If a short-circuit is
made between its positive and negative terminals the battery may explode.
Replace a discharged battery with one of the same type; another type may explode or ignite.
Follow the instructions contained in section 3 of this document to replace the battery. Dispose of
a discharged battery promptly and in accordance with the battery manufacturer’s recommended
instructions. Do not recharge, disassemble or incinerate the discharged battery. Keep discharged
batteries away from children.
Warning
Static electricity can cause permanent damage to electronic components. You should be
aware of this risk, and take precautions against the discharge of static electricity.
This product is at risk from static discharge because the electronic components of the
motherboard are exposed. Memory modules and replacement processors are examples of
electrostatic sensitive devices (ESSDs).
All work that involves contact with the FC810 microATX Motherboard should be done in an
area completely free of static electricity. We recommend using a Special Handling Area (SHA)
as defined by EN 100015-1: 1992. This means that working surfaces, floor coverings and chairs
must be connected to a common earth reference point, and you should wear an earthed wrist
strap and anti-static clothing. It is also a good idea to use an ionizer or humidifier to remove
static from the air.
Handle static-sensitive items with extreme care. Hold add-on components only by their edges,
avoiding their electrical contacts. In general, do not handle static-sensitive items unnecessarily.
Keep all conductive material, and food and drink, away from your work area and the FC810
microATX Motherboard.
ꢋꢃꢉꢁꢋꢍꢄꢍꢃꢀ
This product complies with the relevant clauses of the following European Directives (and all
subsequent amendments):
Low Voltage Directive
EMC Directive
73/23/EEC
89/336/EEC
93/68/EEC
CE Marking Directive
Important
This product, when supplied, complies with the CE Marking Directive and its strict legal
requirements. Use only parts tested and approved by Mitsubishi Electric Motherboard
Division.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 3 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢀꢄꢁꢇ ꢁꢈ ꢀ
This product complies with the American Safety Standard UL1950.
This product complies with the following European EMC standards:
Emissions
Immunity
EN55022 Class B
EN55024
This product also complies with the following American EMC standard:
FCC Class B
Note: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
Consult the dealer or an experienced radio/TV technician for help.
Important
You are cautioned that any change or modification to the product not expressly approved by
the manufacturer could void the approvals held by this product.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 4 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢎꢌꢇꢄꢃꢇꢄꢀ
1
Overview
8
Motherboard Features...................................................................................................................... 9
Configuration Options................................................................................................................... 10
Build-time................................................................................................................................ 10
User Configurable.................................................................................................................... 10
Block Diagram .............................................................................................................................. 11
2
3
Installation guide
12
14
Upgrading the motherboard
Adding more memory.................................................................................................................... 14
Fitting and removing DIMMs.................................................................................................. 14
Fitting a DIMM........................................................................................................................ 15
Removing a DIMM.................................................................................................................. 15
The processor assembly................................................................................................................. 15
To fit a new processor.............................................................................................................. 16
Replacing the battery for the configuration CMOS....................................................................... 16
4
Electronics
17
Processor ....................................................................................................................................... 17
Core Logic..................................................................................................................................... 17
Level 2 Cache................................................................................................................................ 18
Memory......................................................................................................................................... 18
DIMM...................................................................................................................................... 18
BIOS ........................................................................................................................................ 19
Video............................................................................................................................................. 19
Audio............................................................................................................................................. 19
AC’97 CODEC........................................................................................................................ 19
Real Time Clock............................................................................................................................ 20
network.......................................................................................................................................... 20
Standard I/O .................................................................................................................................. 20
Keyboard and Mouse............................................................................................................... 20
Floppy Disk Interface .............................................................................................................. 20
Serial Ports............................................................................................................................... 20
Parallel Port ............................................................................................................................. 21
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 5 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
Additional I/O................................................................................................................................ 21
IDE Disk Controller................................................................................................................. 21
Universal Serial Bus (USB)..................................................................................................... 21
Security.......................................................................................................................................... 21
Motherboard Power....................................................................................................................... 21
Processor Power....................................................................................................................... 21
Battery...................................................................................................................................... 21
Power Management....................................................................................................................... 22
Standby Switch ........................................................................................................................ 22
Behaviour After AC-Disconnect.............................................................................................. 22
Sleep State Indication .............................................................................................................. 22
System Management ..................................................................................................................... 23
MAX1617................................................................................................................................ 23
PC87366 System Monitoring................................................................................................... 23
Fan Control.................................................................................................................................... 23
Expansion Slots ............................................................................................................................. 23
Peripheral Component Interconnect (PCI)............................................................................... 23
Bus Resource Utilisation ............................................................................................................... 24
PCI Interrupts........................................................................................................................... 24
PCI Device Selection (motherboard devices) .......................................................................... 24
PCI Arbitration ........................................................................................................................ 25
5
BIOS Setup & POST
26
BIOS Setup.................................................................................................................................... 26
Control keys............................................................................................................................. 26
Getting help in BIOS Setup ..................................................................................................... 27
Multi-boot facility ......................................................................................................................... 27
Power-on self-test.......................................................................................................................... 28
Recoverable POST errors ........................................................................................................ 28
Terminal POST errors and beep codes .................................................................................... 29
6
7
Electrical
36
Power Requirements...................................................................................................................... 36
PCB ............................................................................................................................................... 36
Connector Assignments
37
Keyboard and Mouse (PS/2 Mini-DIN)................................................................................... 37
LAN (RJ45) ............................................................................................................................. 37
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 6 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
USB Ports 0 and 1.................................................................................................................... 38
Serial Port 1 (9 way D-type) .................................................................................................... 38
VGA (15 way D-type) ............................................................................................................. 39
Parallel Port (25 way D-type) .................................................................................................. 40
Line Input and Output (3.5mm stereo jack)............................................................................. 41
Microphone Input (3.5mm stereo jack).................................................................................... 41
MIDI/Joystick (15 way D-type)............................................................................................... 41
Chassis Intrusion Switch (2 pin single row 0.1” header) ......................................................... 42
Primary and Secondary IDE Disk (40 way dual row 0.1” header) .......................................... 42
Front panel connectors (single row 0.1” header) ..................................................................... 43
Floppy Disk (34 way dual row 0.1” header)............................................................................ 44
Processor and System Fan (3 way header with locking ramp)................................................. 44
Internal LINE in (4 way natural colour ATAPI header) .......................................................... 45
Internal CD audio (4 way green ATAPI header) ..................................................................... 45
Internal telephony (4 way black ATAPI header) ..................................................................... 45
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 7 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢏ
ꢌꢐꢃꢈꢐꢍꢃꢑ
FC810 microATX is a Celeron™ processor-based microATX profile motherboard.
The design of FC810 microATX is based around the following components.
Intel Celeron™ processor in Socket 370
Intel 810 Chipset consisting of :-
Graphics and Memory Controller Hub (GMCH)
I/O Controller Hub (ICH)
Firmware Hub (FWH)
AC’97 audio controller
Intel 82559 IEE802.3 10BASE-T / 100BASE-TX compatible LAN controller
The Celeron™ processor is based on the P6 micro-architecture and includes MMX technology.
Two package styles are available – cartridge (slot 1) and pin-grid array (socket 370). FC810
requires the pin-grid array version.
The GMCH connects the processor to the main system memory and other system logic. It has an
integrated graphics controller with optional 4MB Display Cache. Supports both 66Mhz and
100Mhz system bus.
The ICH contains a PCI 2.2 interface, a bus master IDE controller - Ultra ATA 33/66
(depending on build option), AC’97 2.1 interface and all the general purpose I/O ports. There are
two versions detailed below -
ICH0 – ATA33 IDE Channels, 4 PCI Devices
ICH1 – ATA66 IDE Channels, 6 PCI Devices
The AC’97 CODEC is the analogue part of the audio system. It is connected to the ICH by a
digital link.
The 82559 is Intel’s second generation integrated 10BASE-T/100BASE-TX LAN solution. It
consists of both the Media Access Controller (MAC) and the physical layer (PHY) interface
combined into a single component solution. It contains a 32 bit PCI bus master interface
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 8 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢒꢌꢄꢓꢃꢈꢔꢌꢁꢈ ꢆꢂꢃꢁꢄꢊꢈꢃꢀ
Form factor
Processor
microATX, 9.6" wide x 7.8" deep. ATX 2.01 compliant.
Socket370 with the VRM8.2 regulator on motherboard.
Accepts 66/100Mhz Celeron™ processors
Intel 810
Core logic
Cache
L2 cache included on processor module.
Memory –
RAM
Memory sockets accept 168 pin un-buffered PC100 SDRAM modules.
Memory -
4Mb Firmware Hub
Flash ROM
Buses
VGA
4 PCI bus master slots
Integrated Graphics controller (82810) with 2D/3D acceleration, 230Mhz
RAMDAC and optional 4Mb Display Cache (82810-DC100)
Audio –
AC’97 2.1 compliant CODEC (Optional)
controller
Hard Disk &
CD-ROM
Dual UltraATA33 interfaces for hard disk and CD-ROM. (UltraATA66
optional with ICH1 fitted)
Floppy Disk
720kB, 1.2MB (3-mode), 1.44MB 3½ drives, 1.2MB 5¼ drives.
Support for 120MB drives via ATA port.
IEEE 1284 (ECP & standard) on 25-way D-type
Single 16550. One 9-way D-types on rear edge of motherboard.
Two ports.
Parallel Port
Serial Ports
USB
Ethernet
1x RJ45 port
Keyboard &
Mouse
PS/2-style connectors.
Security
Chassis intrusion detection.
Power
Management
Green and deep green via system management mode.
ACPI compatible.
Wake-on LAN
Standby option with wake-up on interrupt, serial port activity or button.
System
Management
Hardware monitoring – Fan monitor (standard), Voltage/ Thermal monitor
(optional - PC87366 I/O)
Plug & Play
PC98 and PC99 compliant
Battery back-
up
On-board lithium coin cell with 5 years typical life.
PCB
4-layer microATX form-factor.
All components on top side
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 9 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢎꢌꢇꢂꢍꢉꢊꢈꢁꢄꢍꢌꢇꢆꢌꢕꢄꢍꢌꢇꢀ
The following items can be configured at build-time and cannot be modified by the user.
Integrated Graphics Controller 4Mb Display Cache
Ethernet controller/ connector
MIDI / Game Port features
AC’97 Audio
Hardware monitoring functions (Super I/O)
Please contact Mitsubishi Electric Motherboard Division to determine available configurations.
The user can configure the following items.
Processor (Intel boxed products)
Main memory DIMMs
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 10 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢔꢋꢌꢎꢖꢆ ꢍꢁꢉꢈꢁꢒ
CPU
SOCKET 370
IC10
SYSTEM BUS
4MB DISPLAY CACHE
IC 14 /16
GMCH
IC15
DIMM MODULES
MM 1,2
KEYBOARD
MOUSE
PL1
HUB LINK
FWH
IC21
AUDIO AC'97
IC 3
FLOPPY
PL21
ICH
IC13
IDE
PL22 / 16
SUPER I/O
IC23
SERIAL
PL2
LPC BUS
USB
PL4
PARALLEL
PL2
PCI CONN 4
PL13
RJ45 PL4
PCI BUS
GAME/MIDI
PL3
82559 LAN
IC11
PCI CONN 1
PL10
PCI CONN 2
PL11
PCI CONN 3
PL12
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 11 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢗ
ꢍꢇꢀꢄꢁꢋꢋꢁꢄꢍꢌꢇꢆꢉꢊꢍ ꢃ
Warning
Static electricity can cause permanent damage to electronic components. You should be
aware of this risk, and take precautions against the discharge of static electricity.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 12 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
1
2
3
Chasis Intrusion Header
PL17
15
16
17
Graphics and memory
controller hub (GMCH)
C
D
E
RJ45
Hard Switch PSU jumper
PL18
4MB display cache
USB (Dual)
Front panel
PCI expansion slots
PL10,11,12,13
Serial Port 1
4
5
6
7
Floppy disk PL21
18
19
20
21
Debug connector PL15
System fan power PL9
CPU fan power PL8
Processor
F
G
H
I
VGA
Main power PL19
Parallel
Primary IDE Controller PL22
Line output
Line input
Secondary IDE Controller
PL16
8
9
Super I/O
22
23
LAN controller
J
Mic input
Firmware Hub (FWH)
ATAPI audio LINE in (natural)
PL5
K
MIDI & Joystick
10
Buzzer
24
ATAPI CD audio in (green)
PL6
L
Speed LED (Yellow)
11
12
13
14
Main memory DIMMs MM1,2
Lithium Cell (CR2032)
I/O controller hub (ICH)
Clock synth
25
26
A
ATAPI telephony (black) PL7
AC’97 Audio controller
Keyboard
M
Link/Activity LED (Green)
B
Mouse
Not fitted
1-2
Normal operation
Forces processor to lowest multiplier (x2)
Normal Operation
Clear CMOS
2-3
Debug Mode (To be Determined)
Link 1-2 and 3-4 when 5V standby rail is not available
3
1
4
2
PL18
PL19
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 13 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢘ
ꢊꢕꢉꢈꢁ ꢍꢇꢉꢆꢄꢓꢃꢆꢒꢌꢄꢓꢃꢈꢔꢌꢁꢈ
Caution
Care must be taken in the purchase of upgrade parts to ensure both compatibility with the
system and the compliance with appropriate approvals and certification, e.g. CE marking
within Europe. Using non-approved parts may invalidate your warranty and system approvals.
Upgrading the motherboard is not difficult, but if you do not feel confident about the work
involved, you may wish to have your supplier or service organisation complete it for you.
Warning
Never carry out any work inside the computer with AC power applied. Turn off the computer
and unplug all power cords before starting work.
ꢁ
ꢍꢇꢉꢆꢒꢌꢈꢃꢆꢒꢃꢒꢌꢈꢅ
The motherboard has two DIMM (Dual Inline Memory Module) sockets, each of which accepts
modules of up to 128 Mbytes, in any combination. The slot furthest from the processor (MM1)
should be used first.
DIMM specification
The memory modules must meet the PC100 specification.
Read all of these instructions through carefully before you start work.
Turn off the computer and unplug all power cords. Take suitable anti-static precautions and
remove the system cover. Leave the DIMM in the anti-static packaging until the last possible
moment and when you do take the DIMM out of its packaging, hold it by its ends and avoid
touching the metal contacts.
Follow the diagrams and simple instructions on the following pages to insert each DIMM.
After you have fitted new modules, check that the system recognises all the memory. If not,
check that you have:
Correctly fitted the DIMMs in their slots.
Installed DIMMs of the correct type.
It may be necessary to refit the original memory to check if there is a problem with your new
modules.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 14 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
Do not use excessive force. If the module will not fit easily, remove it and start again.
The DIMM is inserted vertically and held in place by the clips at each end.
Do not use excessive force. If the module will not come free easily, check that the holding clips
are clear of the module ends.
Press the tabs on both of the socket’s end clips at the same time. This releases the DIMM and
lifts it partly out of the socket.
ꢄꢓꢃꢆꢕꢈꢌꢎꢃꢀꢀꢌꢈꢆꢁꢀꢀꢃꢒꢔꢋꢅ
1. Turn off the computer and unplug all power cords. Take suitable anti-static precautions and
remove the system cover.
2. If the system was in use just before starting this procedure, the processor may be hot, wait
until it cools
3. Unclip the heatsink/ fan from the processor and lift the clip on the side of the processor
socket.
4. The processor can now be removed from the socket.
Caution
Handle the processor with care, by the body only. Avoid touching the connector at the
bottom. Store in an antistatic container.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 15 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
1. Hold the processor by the edges – avoid touching the pins on the underside
The processor and socket and keyed to ensure the processor is installed in the correct
orientation. It will only fit into the socket one way.
2. When the processor is securely in place close the clip on the socket. Do not use excessive
force.
3. Refit the heatsink/ fan making sure it is correctly and fully seated on the processor.
Warning
The processor requires continuous airflow.
ꢈꢃꢕꢋꢁꢎꢍꢇꢉꢆꢄꢓꢃꢆꢔꢁꢄꢄꢃꢈꢅꢆꢂꢌꢈꢆꢄꢓꢃꢆꢎꢌꢇꢂꢍꢉꢊꢈꢁꢄꢍꢌꢇꢆꢎꢒꢌꢀ
The computer keeps a record of its current hardware configuration in a CMOS memory chip,
which is sustained by a small battery. This battery has a life of up to 5 years. If you find that you
have to reconfigure the computer every time you turn it on, or the date and time seem to be
dramatically incorrect, the battery is probably failing and needs to be replaced.
The battery is a 3-volt lithium type (CR2032 or equivalent) typically used in calculators, watches
and other small, battery-powered electronic items.
Read carefully the following instructions before commencing work.
1. Turn off the computer and unplug all power cords.
Warning
Do not use a metal or other conductive tool to remove the battery. If a short-circuit is
accidentally made between its positive and negative terminals, it may cause the battery to
explode.
2. Using a non-conductive tool, release the latch that holds the battery in place. The battery
will pop up allowing you to lift it out of the holder.
3. Taking care not to touch the top or bottom surface of the new battery, pick up the
replacement with the positive (+) terminal upwards and press the battery into the holder
using a non-conductive implement.
4. Dispose of the old battery in accordance with the battery manufacturer’s instructions.
When you next turn on the computer you will have to run the BIOS Setup utility to enter the
hardware configuration.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 16 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢙ
ꢃꢋꢃꢎꢄꢈꢌꢇꢍꢎꢀ
ꢕꢈꢌꢎꢃꢀꢀꢌꢈ
The FC810 microATX motherboard accepts the following Celeron™ processors operating at a
bus speed of 66 or 100MHz.
266
300
333
366
400
433
466
500
550
600
4.0
4.5
5.0
5.5
6.0
6.5
7.0
5.0
5.5
6.0
66
66
66
66
66
66
66
100
100
100
The processor core voltages are generated by switched-mode regulators on the motherboard to
the Intel VRM8.2 specification.
ꢎꢌꢈꢃꢆꢋꢌꢉꢍꢎ
The core logic is based around the Intel 810 Graphics and Memory Controller Hub (GMCH) and
the I/O Controller Hub (ICH). The features of each are summarised below.
66/100Mhz system bus frequency
DRAM controller supporting 100Mhz SDRAM main memory 8MB – 256MB and suspend
to RAM (PC100)
Integrated graphics controller with 2D/3D H/W acceleration
3D graphics visual/ textural enhancements
Integrated 24-bit 230MHz RAMDAC
Integrated graphics memory controller with display cache interface – 100Mhz SDRAM
Advanced power management functions - ACPI / APIC
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
PCI Bus – supports Rev 2.2 spec and 4/ 6 (optional) master devices
Dual UltraDMA33/ 66 (optional) IDE controller
Dual USB controller (12Mbps or 1.5Mbps)
AC’97 link for audio/ telephony CODEC’s
SMbus controller (motherboard management)
Interrupt Controller – integrated I/O APIC capability
GPIO functions – TTL, Open-Drain, Inversion
Enhanced DMA controller
Real-time clock – 256 byte battery-backed CMOS RAM
ACPI power management logic
Low Pin Count (LPC) interface (Super I/O connection)
ꢋꢃꢐꢃꢋꢆꢗꢆꢎꢁꢎꢓꢃ
The second level cache is contained within the processor module. There is no provision for a
third level cache. Cache size is determined by the type of CPU fitted, refer to your CPU
manufacturer for this information.
ꢒꢃꢒꢌꢈꢅ
There are two DIMM sockets on the motherboards that accept 168-pin un-buffered SDRAM
modules to the Intel PC SDRAM un-buffered memory module specification. PC100 modules are
required. All modules must support SPD (serial presence detect) to allow the BIOS to determine
the memory configuration and set up the chipset optimally. These modules contain a small
EEPROM that describes the module capabilities in detail - including speed, capacity and
organisation. EDO and registered DIMM modules are not supported.
64-bit or 72-bit ECC modules.
2 or 4 bank organisation
Asymmetric or symmetric memory addressing.
Single or double-sided modules.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
The BIOS is contained in a flash ROM device – Firmware Hub (FWH) soldered directly to the
motherboard and includes the code listed below. The motherboard will automatically perform a
BIOS recovery operation if it detects a valid recovery disk during the boot sequence. The BIOS
ROM is accessed as a single linear region in the memory space from 4GB-128kB (0FFFE0000 -
0FFFFFFFFh) and copied at the top of ISA memory (0E0000 - 0FFFFFh).
USB
DMI
Setup-in-ROM
Intel microcode update support and code
Power and system management code
ꢐꢍ ꢃꢌ
The FC810 microATX motherboard contains an integrated graphics controller. However an
alternative adapter can be used and fitted to one of the expansion slots. This may be a PCI
product.
ꢁꢊ ꢍꢌ
The audio system is based around an AC’97 compliant controller. When not fitted, the standard
PC beep function remains.
AC-link digital interface with ICH
16-bit stereo full-duplex codec with fixed 48K sampling rate
3 analog line-level stereo inputs for connection from LINE IN, CD, AUX
2 analog line-level mono inputs for connection from PHONE, PC BEEP
Mono MIC input switchable form two external sources
Stereo line level output
Mono output for speakerphone
Programmable power management
Tone, loudness, 3D stereo enhancements
One power amplifier is used - a National Semiconductor LM4881 ’Boomer’ to drive the LINE-
out jack socket and the optional internal speaker. The microphone input provides power to
enable condenser microphones to be used.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
The following audio connectors are supported.
Rear 3.5mm jack microphone input with phantom power
Rear 3.5mm jack LINE in
Rear 3.5mm jack LINE out (also suitable for 32 ohm headphones)
Internal CD-ROM stereo audio on 4-pin ATAPI connector
Internal stereo LINE input on 4-pin ATAPI connector
Internal telephony connection (mono input and output) on 4-pin ATAPI connector
ꢈꢃꢁꢋꢆꢄꢍꢒꢃꢆꢎꢋꢌꢎꢖ
The real time clock is located in the ICH and includes 256 bytes of battery backed RAM with
two lockable ranges. The clock includes a date alarm and operates from a 32.768kHz crystal. The
3V lithium cell provides data retention for up to 5 years of normal use. Note that the battery is
used only when AC power is not applied to the system (or a standby 5V rail is not provided).
ꢇꢃꢄꢑꢌꢈꢖ
The Intel 82559 LAN controller is an optional feature to provide networking to the FC810.
The rear combined RJ45 / USB connector displays two LED’s which have the following functions :-
SPEED LED (Yellow)
ON if operating at 100Mbps
OFF if operating at 10Mbps
LINK / ACTIVITY LED (Green)
ON if link established and cable present
FLASHING if data activity occurs
ꢀꢄꢁꢇ ꢁꢈ ꢆꢍꢚꢌ
The National Semiconductor PC87363/ PC87366 Super IO controller provides standard I/O.
This comprises the four functions described below. It is packaged in a 128-pin PQFP and is
PC99 and ACPI compliant.
PS/2 style keyboard and mouse ports are provided on the rear panel. The ports are
interchangeable.
The motherboard supports both 2-mode and 3-mode 3½” floppy disk drives.
There is one standard COM port, which is wired to a standard 9-way D-type connector on the
rear panel. The maximum Baud rate is 115K bits per second.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
This is EPP 1.9 and IEE1284 (ECP) compliant and is compatible with a standard (output only)
PC parallel port as well as a bi-directional (PS/2 style) parallel port. There is a 25-way D-type
connector on the rear panel.
ꢁ
ꢍꢄꢍꢌꢇꢁꢋꢆꢍꢚꢌ
Two UltraDMA33/ (66 - ICH1) IDE ports are provided with the controller integrated into the
ICH. This allows for a maximum of four drives to be connected - two to each port. Normally the
primary port would be used for hard disk drives and the secondary port for CD-ROM or DVD
drives. 120MB floppy drives have IDE interfaces.
Both IDE controllers are independent and both can bus-master data into memory for improved
performance. The interfaces are also, of course, compatible with standard ATA drives.
The motherboard has two USB ports at the rear with the controller integrated into the ICH.
ꢀꢃꢎꢊꢈꢍꢄꢅ
There is chassis intrusion detection available on motherboards with the 87366 fitted. This is
capable of detecting an intrusion even when AC is disconnected (the logic is powered from the
3V lithium cell).
ꢒꢌꢄꢓꢃꢈꢔꢌꢁꢈ ꢆꢕꢌꢑꢃꢈ
A voltage regulator conforming to the Intel VRM8.2 standard supplies power for the processor
core. The motherboard automatically selects the correct processor voltage.
An IEC-type CR2032 3V lithium coin cell and holder are fitted to the board. Note that when the
motherboard is powered off but the AC remains connected (the standby rail is active) the battery
is not used.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢕꢌꢑꢃꢈꢆꢒꢁꢇꢁꢉꢃꢒꢃꢇꢄ
The motherboard supports an ACPI-compliant standby switch for use with a soft-switch power
supply. The action of the switch is under a combination of hardware and software control and is
summarised in the table below. The motherboard will power off regardless of the state of
software if the switch is held down for more than 4 seconds.
Standby (soft power off)
POST, DOS or APM O/S
Machine powers up and executes POST
Machine powers off into standby state
The ‘Wake on AC connect’ BIOS option and the state of the lithium cell determine the
behaviour of the motherboard after an AC-disconnect. The table below describes this.
CMOS RAM cleared. This is the state of a
new motherboard before assembly. This also
occurs after battery removal or failure.
Motherboard waits for standby switch
to be pressed.
CMOS RAM not cleared and ‘Wake on AC
connect’ was set to ‘Enabled’.
Motherboard fully powers up without
intervention.
CMOS RAM not cleared and ‘Wake on AC
connect’ was set to ‘Disabled’. This is the
default state. Resume events will be lost if an
AC power failure occurs.
Motherboard waits for standby switch
to be pressed.
Indication of the power state is via the power LED. When a standard LED is fitted, it is
illuminated when power (main 5V) is on. Three states can be indicated by using a two-colour
LED which is biased in the reverse direction to indicate a sleeping state. The table below
assumes the use of a yellow/green bi-colour LED with the green anode connected to the LED+
pin.
Power off
Off
Normal operation
Sleeping
Green
Yellow
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢀꢅꢀꢄꢃꢒꢆꢒꢁꢇꢁꢉꢃꢒꢃꢇꢄ
There are three main elements to the optional system management hardware.
MAX1617 Thermal Monitor
PC87366 Super I/O
Processor thermal diode ADCs
A precise digital thermometer that reports both the CPU temperature and the temperature of
itself – system temperature. It is accessed via the ICH SMbus interface.
The National Semiconductor PC87366 provides the system monitor functions as described
below. It provides the following functions.
Fan monitoring. The two inputs to the PC87366 device monitor the first two ATX
“fantach” signals.
Monitoring of system +12V, -12V, +5V, +3.3V, VCPU, +2.5V, +1.8V and +1.5V power
rails
Monitoring of chassis intrusion (top cover)
ꢂꢁꢇꢆꢎꢌꢇꢄꢈꢌꢋ
The system fan is controlled by the motherboard such that it stops rotating when the system is in
‘Suspend’ mode. FC810 microATX motherboard supports variable fan speed control in which
the speed of the fan is raised as the temperature of the processor increases. This considerably
reduces fan noise in normal operation.
The variable fan speed option can only be used with an ACPI-aware operating system (such as
Windows 98). This feature requires separate programming and you should contact Mitsubishi
Electric Motherboard Division for further details.
ꢃꢛꢕꢁꢇꢀꢍꢌꢇꢆꢀꢋꢌꢄꢀ
Four PCI bus master slots are available.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢔꢊꢀꢆꢈꢃꢀꢌꢊꢈꢎꢃꢆꢊꢄꢍꢋꢍꢀꢁꢄꢍꢌꢇ
INTA#
INTB#
INTC#
INTD#
Slots
Slots
Slots
LAN & Slots
0
0
0
Host-hub interface Bridge/
DRAM controller
GMCH internal graphics device
82559 LAN Controller
Slot 4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
2
3
4
5
6
4
20
25
27
29
31
9
11
13
15
30
31
31
31
31
31
31
31
Slot 3
Slot 2
Slot 1
Hub interface to PCI Bridge
PCI to LPC Bridge
IDE Controller
USB Controller
SMBus Controller
Reserved
AC’97 Audio Controller
AC’97 Modem Controller
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
0
1
2
3
4
0
0
0
0
0
PCI slot 1
PCI slot 2
PCI slot 3
PCI slot 4
82559 LAN Controller
Note that the arbiter implements a round robin scheme and thus no request level has fixed
priority over another.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢜ
ꢔꢍꢌꢀꢆꢀꢃꢄꢊꢕꢆꢝꢆꢕꢌꢀꢄ
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 configuration. It is also used to configure various security and
power-saving options. Configuring the computer is necessary to ensure that the software you use
can recognise and exploit the hardware’s capabilities.
The current configuration is kept in a special area of memory, called CMOS memory, and
maintained by a battery so that the configuration is preserved even while the computer is switched
off.
Whenever the computer is turned on, the BIOS power-on self-test (POST) routine tests various
hardware components, including memory, and compares the actual configuration of the computer
with that recorded in permanent (CMOS) memory.
A configuration discrepancy could arise if you have just installed or removed a hardware option
(for example, if you have added or replaced an expansion card).
ꢔꢍꢌꢀꢆꢀꢃꢄꢊꢕ
To start the BIOS Setup utility:
1. Turn on or restart your computer.
2. When you see
‘Press <F2> to enter setup’
appear on the screen, press the F2 key.
3. If you have previously defined a Supervisor password, you are prompted for it before BIOS
Setup starts.
Use the keys listed in the legend bar at the bottom of the BIOS Setup screen to make your
selections or exit the current menu.
Sub-menus are marked by a pointer. To display a sub-menu, use the arrow keys to move the
cursor to the sub-menu you want, then press ENTER.
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.
F1 or Alt-h
View a general help topic. Press esc to close the help window.
Exit the current menu.
Esc
Left or Right arrow
Up or Down arrow
Plus (+) or F6 or Spacebar
Select a different menu.
Select fields on the current menu.
Select the next value for the current field.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
Minus (-) or F5
Select the previous value for the current field.
Make a selection from the menu bar or enter a sub-menu.
Move the cursor to the top or bottom of the current menu.
Move the cursor to the next or previous page of the current menu.
Restore the default settings for the fields on the current menu.
Save the changes you’ve made and exit from BIOS Setup.
Enter
Home or End
Page up or Page down
F9
F10
Caution
The default BIOS settings may not be appropriate for your particular system. Make a note of
the current settings before pressing F9 or using the Load Setup Defaults option of the Exit
menu.
You can at any time get general help about the control keys by pressing the F1 key.
The help window on the right-hand side of each menu displays help text for the currently-
selected field. It changes as you move the cursor from one field to another.
ꢒꢊꢋꢄꢍ ꢔꢌꢌꢄꢆꢂꢁꢎꢍꢋꢍꢄꢅ
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 <F2> to
enter setup’. Even if this message is not displayed, you can press the <ESC> key and this
menu will appear just before booting:
Boot Menu
1. Diskette Drive
2. Removable Devices
3. Hard Disk Drive
4. ATAPI CD-ROM Drive
5. Network Boot
< Enter Setup>
This menu can be used to temporarily use another drive or device to boot your system, for
example a bootable CD-ROM, without having to enter the BIOS setup. Simply use the up and
down arrows to make a selection. This change will not be permanent and the system boot will
revert to the normal BIOS setting the next time you switch on your system.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
ꢕꢌꢑꢃꢈ ꢌꢇꢆꢀꢃꢋꢂ ꢄꢃꢀꢄ
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 Setupor just Press
<F2> 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
problem is still reported.
Check that all external cables are securely connected.
Try running the BIOS Setup utility to reconfigure the system. If the computer will not
BOOT after you make changes in BIOS Setup, try returning to the original settings.
Open up the system unit and check that all internal signal and power cables are securely
connected.
If the problem persists, contact your supplier or authorised maintainer.
System Configuration Data updated
This message indicates that the system configuration has changed (such as an expansion
card has been added) and that the configuration data has therefore been updated.
System Configuration Data Write Error
This message indicates that the system configuration has changed (such as an expansion
card has been added) but the configuration data could not be updated.
Invalid System Configuration Data – run configuration utility
The data describing the system configuration is incorrect and should be updated. This can
be done by checking the ‘Reset Configuration Data’ in BIOS Setup followed by ‘Save and
Exit’.
Diskette drive A error
Drive A: is present but fails the POST diskette tests. Check that the drive is defined
correctly in BIOS Setup. If necessary, open the system unit and check that the drive’s signal
(ribbon) cable is connected.
System/Extended/Shadow RAM failed at offset: xxxx Failing bits: yyyy
System, extended or shadow memory is not working, or not configured properly, at offset
xxxx. The hexadecimal number yyyy is a map of the bits at the address that failed the
memory test. Each “1” in the map represents a failed bit.
Fixed disk X failure or Fixed disk controller failure
A fixed (hard) disk drive is not working or not configured properly. Check that the drive is
defined correctly in BIOS Setup. If necessary, open the system unit and check that the
drive’s signal (ribbon) cable is connected.
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).
Keyboard error [nn] or Keyboard controller error
There is a problem with the keyboard or (less likely) the standard I/O controller on the
motherboard. If POST discovers a stuck key it displays its scan code.
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
Operating system not found
An operating system cannot be located either on a system diskette or on a hard disk. Start
BIOS Setup and check that the diskette and/or hard disk drives are specified correctly.
Parity check 1 xxxx or Parity check 2 xxxx
Parity error found on the system (1) or I/O (2) bus. The BIOS attempts to locate and display
the address xxxx. If it cannot locate the address, it displays “????”.
Previous boot incomplete - default configuration used
The previous POST did not complete successfully. POST loads default values and offers to
start BIOS Setup. If the failure was caused by incorrect values and they are not corrected,
the next boot will likely fail too.
Real-time clock error
Enter BIOS Setup and check the System Time and System Date settings on the Main menu.
System battery is dead - replace and run Setup
Replace the configuration battery as instructed in the previous chapter, then use BIOS
Setup to reconfigure the system.
System cache error - cache disabled
The RAM cache failed POST and BIOS disabled it.
System CMOS checksum bad - run Setup
System CMOS has been corrupted or modified incorrectly, perhaps by an application
program that changes data stored in CMOS. Run BIOS Setup and reconfigure the system
either by getting the default values or by making your own selections.
There are several POST routines that shut down the computer if they fail. If possible, the BIOS
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 fails.
Turn off the computer for 30 seconds and then try again. If the fault persists, make a note of the
error code (if any) and call your supplier or authorised maintainer.
1-2-2-3
1-3-1-1
1-3-1-3
1-3-4-1
1-3-4-3
1-4-1-1
2-1-2-3
2-2-3-1
1-2
BIOS ROM checksum
DRAM refresh.
8742 keyboard controller
RAM failure on address line.
RAM failure on data bits of low byte of memory bus.
RAM failure on data bits of high byte of memory bus.
Check ROM copyright notice
Test for unexpected interrupts
Video configuration failure, or option ROM checksum failure. (One long, two
short beeps.)
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ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
The BIOS also issues Port 80h codes that can be displayed using a suitable diagnostic card. The
codes can be used to determine the failure.
02h
03h
04h
06h
08h
09h
0Ah
0Bh
0Ch
0Eh
0Fh
10h
11h
12h
13h
14h
16h
17h
18h
1Ah
1Ch
20h
22h
24h
26h
28h
29h
2Ah
2Ch
2Eh
2Fh
30h
32h
33h
34h
35h
Verify Real Mode
Disable Non-Maskable Interrupt (NMI)
Get CPU type
Initialise system hardware
Initialise chipset with initial POST values
Set IN POST flag
Initialise CPU registers
Enable CPU cache
Initialise caches to initial POST values
Initialise I/ O component
Initialise the local bus IDE
Initialise Power Management
Load alternate registers with initial POST values
Restore CPU control word during warm boot
Initialise PCI Bus Mastering devices
Initialise keyboard controller
BIOS ROM checksum
Initialise cache before memory autosize
8254 timer initialisation
8237 DMA controller initialisation
Reset Programmable Interrupt Controller
Test DRAM refresh
Test 8742 Keyboard Controller
Set ES segment register to 4 GB
Enable A20 line
Autosize DRAM
Initialise POST Memory Manager
Clear 512 KB base RAM
RAM failure on address line
RAM failure on data bits of low byte of memory bus
Enable cache before system BIOS shadow
RAM failure on data bits of high byte of memory bus
Test CPU bus- clock frequency
Initialise Phoenix Dispatch Manager
Test CMOS RAM
Initialise alternate chipset registers.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 30 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
36h
37h
38h
39h
3Ah
3Ch
3Dh
42h
44h
45h
46h
48h
49h
4Ah
4Bh
4Ch
4Eh
50h
51h
52h
54h
56h
58h
59h
5Ah
5Bh
5Ch
5Eh
60h
62h
64h
66h
67h
68h
69h
6Ah
6Bh
6Ch
6Eh
Warm start shut down
Reinitialise the chipset (MB only)
Shadow system BIOS ROM
Reinitialise the cache (MB only)
Autosize cache
Advanced configuration of chipset registers
Load alternate registers with CMOS values
Initialise interrupt vectors
Initialise BIOS interrupts
POST device initialisation
Check ROM copyright notice
Check video configuration against CMOS
Initialise PCI bus and devices
Initialise all video adapters in system
Display QuietBoot screen
Shadow video BIOS ROM
Display BIOS copyright notice
Display CPU type and speed
Initialise EISA board
Test keyboard
Set key click if enabled
Enable keyboard
Test for unexpected interrupts
Initialise POST display service
Display prompt "Press F2 to enter SETUP"
Disable CPU cache
Test RAM between 512 and 640 KB
Base address
Test extended memory
Test extended memory address lines
Jump to UserPatch1
Configure advanced cache registers
Initialise Multi Processor APIC
Enable external and CPU caches
Setup System Management Mode (SMM) area
Display external L2 cache size
Customise defaults
Display shadow- area message
Display possible high address for UMB recovery
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 31 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
70h
72h
74h
76h
77h
78h
79h
7Ah
7Ch
7Eh
80h
81h
82h
83h
84h
85h
86h
87h
88h
89h
8Ah
8Bh
8Ch
8Eh
8Fh
90h
91h
92h
93h
95h
96h
97h
98h
99h
9Ah
9Ch
9Dh
9Eh
9Fh
Display error messages
Check for configuration errors
Test real- time clock
Check for keyboard errors
SMBus init devices
Initialise system monitor and check for intrusion
PCI audio init
Test for key lock on
Set up hardware interrupt vectors
Initialise coprocessor if present
Disable onboard Super I/ O ports and IRQs
Late POST device initialisation
Detect and install external RS232 ports
Configure non- MCD IDE controllers
Detect and install external parallel ports
Initialise PC- compatible PnP ISA devices
Re- initialise onboard I/ O ports.
Configure Motheboard Configurable Devices
Initialise BIOS Data Area
Enable Non- Maskable Interrupts (NMIs)
Initialise Extended BIOS Data Area
Test and initialise PS/ 2 mouse
Initialise floppy controller
Autotype
Determine number of ATA drives
Initialise hard- disk controllers
Initialise local- bus hard- disk controllers
Jump to UserPatch2
Build MPTABLE for multi- processor boards
Install CD ROM for boot
Clear huge ES segment register
Fixup Multi Processor table
Search for option ROMs. One long two short beeps on checksum failure
Check for SMART Drive
Shadow option ROMs
Set up Power Management
Security init
Enable hardware interrupts
Determine number of ATA and SCSI drives
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 32 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
A0h
A2h
A4h
A8h
AAh
ACh
AEh
B0h
B1h
B2h
B4h
B5h
B6h
B7h
B8h
B9h
BAh
BBh
BCh
BDh
BEh
BFh
C0h
C1h
C2h
C3h
C4h
C5h
C6h
C7h
C8h
C9h
D2h
E0h
E1h
E2h
E3h
E4h
E5h
Set time of day
Check key lock
Initialise typematic rate
Erase F2 prompt
Scan for F2 key stroke
Enter SETUP
Clear IN POST flag
Check for errors
ROMPilot unload
POST done - prepare to boot operating system
One short beep before boot
Terminate QuietBoot
Check password (optional)
ACPI initialisation
Clear global descriptor table
Clean up all graphics
Initialise DMI parameters
Initialise PnP Option ROMs
Clear parity ch+ eckers
Display MultiBoot menu
Clear screen (optional)
Check virus and backup reminders
Try to boot with INT 19
Initialise POST Error Manager (PEM)
Initialise error logging
Initialise error display function
Initialise system error handler
Dual cmos init
Dock init
Dock init late
Force recovery check
Extended checksum check of bios
Unknown\unexpected interrupt
Initialise the chipset
Initialise the bridge
Initialise the CPU
Initialise system timer
Initialise system I/ O
Check force recovery boot
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 33 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
E6h
E7h
E8h
E9h
EAh
EBh
ECh
EDh
EEh
EFh
F0h
F1h
F2h
F3h
F4h
F5h
F6h
F7h
Checksum BIOS ROM
Go to BIOS
Initialise Multi Processor
Set Huge Segment
Initialilze OEM special code
Initialise PIC and DMA
Initialise Memory type
Initialise Memory size
Shadow Boot Block
System memory test
Initialise interrupt vectors
Initialise Run Time Clock
Initialise video
Initialise beeper
Initialise boot
Clear Huge segment
Boot to Mini DOS
Boot to Full DOS
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 34 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
The following codes are produced during the BIOS recovery sequence.
14h
16h
17h
18h
E0h
E1h
E2h
E3h
E4h
E5h
E6h
E7h
E8h
E9h
EAh
EBh
ECh
EDh
EEh
EFh
88h
FFh
Read file
Erase sector
Program sector
Verify sector
Memory allocation error
File not found
Path not found
No handles available
Access denied
Invalid access code
Undefined file open error
Access denied on file read
Invalid handle
Undefined file read error
File close failure
Chip ID failure
Sector erase failure
Sector protect failure
Sector program failure
Sector verify error
Video not found
Incorrect parameters
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 35 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
!
ꢃꢋꢃꢎꢄꢈꢍꢎꢁꢋ
ꢕꢌꢑꢃꢈꢆꢈꢃ"ꢊꢍꢈꢃꢒꢃꢇꢄꢀ
The motherboard power requirements are heavily dependent on system configuration and the
software being used. The table below can be used as a guide to the likely power supply
requirements. They are measured using a 400MHz Intel Celeron Processor and 2 memory
modules running stress test software designed to yield worst case results. They should not,
however, be regarded as maximum values.
Voltage
Tolerance
5%
5%
4%
5%
10%
10%
0mA
Maximum
20mA
4.6A
1.9A
360mA
30mA
Current (in above
configuration)
Note that these figures do not cover cards plugged into the slots.
When operating this motherboard with a power supply that does not provide a +5V
standby output, the PL8 jumpers (installation guide reference 2) must be fitted.
Advisory
Mitsubishi has found that some power supplies generate damaging voltages on their main
outputs when their +5V standby output is over-loaded.
ꢕꢎꢔ
The PCB is a four-layer design measuring W7.8” x L9.6”. It is ATX 2.01 compliant. The inner
power planes are arranged so that the ground plane is nearest the top component layer.
The PCB has a UL flammability rating of 94V-0.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 36 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
#
ꢎꢌꢇꢇꢃꢎꢄꢌꢈꢆꢁꢀꢀꢍꢉꢇꢒꢃꢇꢄꢀ
(Installation guide references A and B)
1
2
3
4
5
6
CLK
VCC
GND
NC
I/O
O
-
Data clock
+5V Power
Signal ground
No connect
Serial data
No connect
-
DATA
NC
I/O
-
(Installation guide reference C)
1
2
3
4
5
6
7
8
TX+
TX-
RX+
NC
O
O
I
Transmit Data +
Transmit Data -
Receive Data +
Not connected
Not connected
Receive Data -
Not connected
Not connected
-
NC
-
RX-
NC
I
-
NC
-
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 37 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
(Installation guide reference D)
4
1
USB
Port 0
USB
Port 1
1
4
1
2
3
4
VCC
O
+5V Power
DATA-
DATA+
GND
I/O
I/O
-
Differential Serial Data -
Differential Serial Data +
Signal ground
(Installation guide reference E)
5
1
6
9
1
2
3
4
5
6
7
8
9
DCD
I
Data Carrier Detect
Receive Data
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
I
O
O
I
Transmit Data
Data Terminal Ready
Signal ground
I
Data Set Ready
Request to Send
Clear to Send
O
I
I
Ring Indicate
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 38 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
(Installation guide reference F)
5
1
15
11
1
RED
O
O
O
-
Analog Video Output (Red)
2
GREEN
BLUE
NC
Analog Video Output (Green)
3
Analog Video Output (Blue)
4
Not Connected
5
GND
-
Ground
6
RRTN
GRTN
BRTN
+5V
-
-
7
-
-
8
-
-
9
0
5V Fused
10
11
12
13
14
15
GND
-
-
NC
-
Not connected
SDA
I/O
O
O
I/O
Monitor DDC Interface Data
Horizontal Synchronisation
Vertical Synchronisation
Monitor DDC Interface Clock
HSYNC
VSYNC
SCL
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 39 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
(Installation guide reference G)
13
1
25
14
1
2
3
4
5
6
7
8
9
STB#
STB#
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
ACK#
BUSY
PE
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
ACK#
BUSY
PE
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
I
I
SLCT
AFD#
ERR#
INIT#
SLIN#
GND
SLCT
AFD#
ERR#
INIT#
SLIN#
GND
I
O
I
O
O
-
GND
GND
-
GND
GND
-
GND
GND
-
GND
GND
-
GND
GND
-
GND
GND
-
GND
GND
-
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 40 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
(Installation guide references I and H)
Sleeve
Tip
GND
Left channel
Right channel
Ring
(Installation guide reference J)
Sleeve
Tip
GND
Mono input
Electret bias voltage
Ring
(Installation guide reference K)
1
+5V Power
JAB1
2
+5V Power
JBB1
3
4
5
JACX
6
JBCX
7
GND
8
MIDI OUT
JBCY
9
GND
10
12
14
16
11
13
15
JACY
JBB2
JAB2
MIDI IN
Key
+5V Power
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 41 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
(Installation guide references 1)
1
2
Switch input. Switch should be open when chassis is closed.
GND
(Installation guide reference 6 and 7)
1
RESET#
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
GND
2
GND
3
4
DATA8
DATA9
DATA10
DATA11
DATA12
DATA13
DATA14
DATA15
Key
5
6
7
8
9
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
11
13
15
17
19
21
23
25
27
29
31
33
33
33
33
DMAREQ
IOW#
GND
GND
IOR#
GND
IORDY
DMACK#
INTRQ
A1
SPS_CSL
GND
IOCS16#
PDIAG#
A2
A0
CS1FX#
DASP#
CS3FX#
GND
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 42 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
(Installation guide reference 3)
1
1
Power switch. (momentary)
GND
Power ON switch
2
3
Not used
Not Used
Key
4
Not used
5
Key (pin missing)
+
6
7
Key (pin missing)
Receive
IR MODULE
8
9
GND
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Transmit
+
Key
Key (pin missing)
+
Hard Disk LED
Key (pin missing)
Hard disk activity LED -
+
Key
Key (pin missing)
Power LED -
Key (pin missing)
Power LED +
Key (pin missing)
Not used
Power LED
Key
Not used
GND
Speaker
Key (pin missing)
GND
Internal speaker drive
Key (pin missing)
Message LED +
Message LED -
Message LED
30
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 43 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
(Installation guide reference 4)
1
GND
GND
Key
2
MODE
DENSEL#
DS3#
3
4
5
6
7
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
8
INDEX#
DS0#
9
10
12
14
16
18
20
22
24
26
28
30
32
34
11
13
15
17
19
21
23
25
27
29
31
33
DS2#
MOTOR#
DIR
STEP#
WRDATA#
WE#
TRK0#
WP#
JBB2
RDDATA
HDSEL
DSKCHG#
(Installation guide reference 20 and 19)
1
2
3
GND
-
Signal ground
+12V Power
FAN_TACH#
O
I
DC fan drive voltage
Tacho sense from fan
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 44 OF 45
ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ ꢇ ꢈ ꢉ ꢊ ꢋ ꢌ ꢅ ꢍ ꢉ ꢎ ꢏ ꢐ ꢈ ꢑ ꢉ ꢒ ꢈ ꢓ ꢅ ꢔ ꢕ ꢐ ꢈ ꢅ ꢖ ꢗ ꢇ ꢓ ꢐ
ꢊ ꢘ ꢈ ꢇ ꢙ ꢅ ꢃ ꢚ ꢚ ꢚ
(Installation guide reference 23)
1
2
3
4
LEFT
GND
I
-
-
I
Left audio input
Signal ground
Signal ground
Right audio input
GND
RIGHT
(Installation guide reference 24)
1
2
3
4
LEFT
GND
I
-
-
I
Left audio input
Signal ground
Signal ground
Right audio input
GND
RIGHT
(Installation guide reference 25)
1
2
3
4
Input
GND
GND
MIC
I
Input from MODEM
Signal ground
-
-
Signal ground
O
Microphone output to MODEM
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 45 OF 45
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