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Mitsubishi Electric Apricot LS 550 Owner's Handbook Manual Page 80

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BIOS upgrade and recovery
These jumpers should not normally be changed except by a service
engineer or at the direction of a service engineer.
Floppy disk control mode
PL22
System Fan
PL36
PL37
Soundblaster enable
PL100 Near CD audio connector. Link pins 1-2 (default).
Processor and BUS clock
These settings must not be changed except in the event of a
processor upgrade. Full details of the processor's required settings
should accompany the new processor and the appropriate board
links should then be identified from the table below.
Clearing CMOS
CMOS battery connected (default)
CMOS battery disconnected
BIOS image selection
Boot using normal BIOS (default)
Boot using recovery BIOS
BIOS reprogram
Enabled (default)
Disabled
Default position link pins 1-3 which enables both 3 and 2
mode operation of the drive. If this is not required link pins
3-4 for 2 mode operation of the drive.
System fan, slow mode.
System fan, full speed mode.
Link pins 2-3 for audio disable.
I n s i d e t h e S y s t e m U n i t
LS/VS 550 OWNER'S HANDBOOK
PL8
1-2
2-3
PL10
1-2
2-3
PL11
1-2
2-3
A/5

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