Quantum Atlas II User Manual

Atlas II

Jumper Settings

50-pin Jumper Settings

Jumper Settings

The following describes the jumper options and settings available on the Maxtor® Atlas™ II disk drive.

Maxtor Atlas II was developed by Quantum Corporation prior to its merger with Maxtor.

Termination Enable (TE)

Enable termination TE jumper on
Disable termination TE jumper off

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Atlas II

Jumper Settings

Termination Power (TP)

Enable termination power TP jumper on

Disable termination power TP jumper off

SCSI ID (A3, A2, A1, A0)

Set drive SCSI ID See ID settings table below

Delay Spin (DS)

Enable spin delay

Disable spin delay

SP jumper off

SP jumper on

cStagger Spin

Enable spin stagger SS jumper on

Disable spin stagger SS jumper off

Write Protect

Enable W rite Protection

Disable W rite Protection

WP jumper on

WP jumper off

Jumper Locations

The Atlas II disk drive has two locations where user configurable jumpers are found. The primary jumper block (Front option
connector J3) for the Atlas II is found on the front edge of the disk drive printed circuit board. Using these jumper pins you
can establish the various drive configuration options. The second option jumper block is used to set the Atlas II termination
options. This jumper block is found on the printed circuit board at the rear of the drive and is near the SCSI cable connector.

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Atlas II

Jumper Settings

28-Pin Secondary Option Connector

Pin S ignal P in S ignal

1

3

5

7

9

11

13

15

17

19

A0

A1

A2

Fault LED

Busy LED

+5VDC out

Delay Spin

Stagger Spin

Write Protect

Spindle Sync

2

4

6

8

1 0

1 2

1 4

1 6

1 8

2 0

logic_gnd

logic_gnd

logic_gnd

key (blank)

Spindle Sync

unused

logic_gnd

logic_gnd

logic_gnd

logic_gn

The drawing above displays the jumper block physical location and pin definitions.

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