Signal Connector J1 is a standard 50-pin SCSI interface connector. The signals on J1 include the 8-bit SCSI bus and various control and handshaking lines.
Multi-Function Connector / Jumper Block J2 is used for device addressing. It can also be used to connect the drive to a user-supplied Operator Panel (see below).
Power Connector J3 is a 4-pin connector used to supply +5V and +12V to the drive.
Connectors J4 and J5 are 3/16-inch spade lugs located on the HDA and frame, respectively, and are used for grounding purposes. System characteristics determine proper ground connection.
Operator Panel Connection
J2 Pin Function
19 Logic ground.
20 Not used.
21 Write Protect input. Logic ground disables writing and
lights the Write Protect LED.
22 Ready output. Logic ground indicates that the drive is
Ready and lights the Ready LED.
23 +5V source for the LEDs.
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