Page 1
MITSUBISHI
MF501C/MF504C
FLEXIBLE DISK DRIVES
INSTALLATION GUIDE
1.
Preparation prior to installation
(1)
Option jumper settings:
The factory pre-settings of the option jumper plugs are shown in Fig.
They are set
and
PC-AT~
relocation of the jumper plugs is required for these and other fully compatible
computers.
If your IBM compatible computer requires a unique option setting,
computer is not IBM compatible, refer to Section 3 in this guide for appropriate settings.
(2)
Removing the terminating resistor pack:
If your system has another 5
terminating resistor pack from the drive connected
of the
MF504C is located on the
If your other flexible disk drive is a 3.5 inch drive, always remove the terminator pack from the
ME50tC
to
make the drive plug-in compatible
(The MF504C is workable only with the
% inch flexible
FDD
controller signal cable. The terminator pack of the
P.
C.
board as seen in Fig.
MF501C
or MF504C.
..
_MESQ4C
to
disk
drive installed, remove the
to
...
the IBM
PC-AT~)
the middle connector
1.
PC;tJ>
Therefore no
MF501C
1.
PC-XT;tJ>
or
your
or
TERMINATOR
RESISTOR
PAC
Fig. 1 Terminator and Jumper Plug Locations
TERMINATOR
RESISTOR
PAC
2. Cable connection to system
Fig. 2 shows the locations of the signal, power and grounding connectors
rear of the flexible disk drive.
at
the
Page 2
Pin 1 INTERFACE CABLE CONNECTOR
Fig. 2 Flexible Disk Drive Connector Locations
3. Customer jumper options
Function
Drive Select
Motor On Condition
I/F
Pin
34
Output Status
Spindle Motor
Speed Control
MB
Capacity Select
1
Jumper
Name
DSO
OS
DS2
DS3
MX Drive Always Selected
TD
MM 0 Motor Start with Motor On Signal
MS
SR
DC
SS
SB
SS&ND
Initial Setting
MF501C MF504C
1 0
><
><
><
X
><
><
Description
Drive Select 0
Drive Select 1
0
Drive Select 2
Drive Select 3
><
Terminating Resistor of
Motor Start with Drive Select
Standard Ready Signal Output
0 Disk Change Signal Output
360rpm when
300rpm when
Motor Speed Constantly 360rpm
0
1.0MB Unformatted, 720KB Formatted
I/F
IIF
Pin 2
Pin 2
D.S.
On/Off
is
High Level.
is
Low Level.
Note) It is not recommended
that are not explained in
®
PC,
PC-XT and PC-AT are the registered trademarks
to
relocate the jumper plugs
the
above.
Machines Corporation.
~MITSUBISHI
ELECTRIC
CORPORATION
2
to
or from the locations
of
International Business
U871
D083H03
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