Mitsubishi Electric Apricot FT1200 Owner's Handbook Manual page 43

S y s t e m m o t h e r b o a r d
Audio disable, J80
On-board SCSI Interface, J90 & J91
Hard drive LED, J40
Floppy Disk mode, J60
Speakers, PL86 (if fitted)
6/4 FT1200 OWNER'S HANDBOOK
Link SCSI Enable - J90
1 - 2 Enable SCSI
2 - 3 Disable SCSI
J90 setting (see above)
SCSI Disabled (IDE drives fitted)
SCSI Enabled (SCSI drives fitted)
Pins
1-3
Software control for 1.2Mb mode operation in Japan
This is only for special system cases with internal stereo speakers, the normal
casing is only fitted with a single 'beep' type speaker, connected to PL71.
Pins Function
1 Stereo - Left
2 Audio ground
3
4
5 Stereo - Right
6 Audio ground
Audio J80
1-2, Enable Audio
2-3, Disable Audio
SCSI Type - J91
Non Ultra SCSI
Ultra wide SCSI
Floppy options J60
3-mode operation
Mono
Link
Set J40 as follows:
1 - 2
2 - 3
Connection PL86
Left speaker = pins 1 and 2
Mono = pins 3 and 2
Link 4 and 5 for mono
Right speaker = pins 5 and 6
Link
ON
OFF