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Diagram and user-selectable options
Below is a diagram of the main board of SCSI disk drives and also a summary of the user-selectable options including guidelines for
installation of the drives.
This setting applies only for MP model drives and does not apply for MC model drives.
CN2
Pin1 (Disk enclosure) side
MAN series (MP models)
Pin 1-2
Open
Short
Open
Short
Open
Short
Open
Short
CN2 Terminal Setting (on MP models only)
Pin #
Setting Item
1-2
SCSI ID 0
See "SCSI ID Setting on CN2 (on MP models only)" Table
3-4
SCSI ID 1
5-6
SCSI ID 2
7-8
SCSI ID 3
9-10
Write protect
Open
Short
11-12
Motor start mode
Open
Short
13-14
Force Narrow
Open
Short
15-16
Force Single Ended
Open
Short
17
GND
18, 19
N.C
20
IDD Reset
Input signal
21-22
Remote LED
Output signal
23-24
Terminal power supply
Open
Short
SCSI ID Setting on CN2 (on MP models only)
Pin 3-4
Pin 5-6
Pin 7-8
Open
Open
Open
Open
Open
Open
Short
Open
Open
Short
Open
Open
Open
Short
Open
Open
Short
Open
Short
Short
Open
Short
Short
Open
CN2
Pin1 (Disk enclosure side)
MAM series (MP models)
Function
......
Write operation is enabled.
......
Write operation is disabled.
......
Starting of motor is controlled with START/STOP
UNIT command.
......
Motor is started immediately after power supply is
turned on or microcode is downloaded.
......
16-bit bus mode
......
Pull upper 8bits and parity internally when drive is
connected to Narrow SCSI bus.
......
Follows DIFFSNS signal level on SCSI bus.
......
Single-Ended mode
......
Drive does not supply terminator power to SCSI bus.
......
Drive supplies terminator power to SCSI bus.
ID
Pin 1-2
Pin 3-4
Pin 5-6
0
Open
Open
Open
1
Short
Open
Open
2
Open
Short
Open
3
Short
Short
Open
4
Open
Open
Short
5
Short
Open
Short
6
Open
Short
Short
7
Short
Short
Short
(default)
(default)
(default)
(default)
(default)
Pin 7-8
ID
Short
8
Short
9
Short
10
Short
11
Short
12
Short
13
Short
14
Short
15
(default)
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