Quantum Atlas II Service 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

SP jumper off

Disable spin delay

SP jumper on

cStagger Spin

Enable spin stagger SS jumper on

Disable spin stagger SS jumper off

Write Protect

Enable W

rite Protection WP jumper on

Disable W

rite Protection 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

ignal P

in S

ignal

logic_gnd

Fault LED

key (blank)

Busy LED

0 Spindle Sync

+5VDC out

2 unused

Delay Spin

4 logic_gnd

Stagger Spin

6 logic_gnd

Write Protect

8 logic_gnd

Spindle Sync

0 logic_gn

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

3 of 8

Atlas II

Jumper Settings

SCSI ID Settings

The following table identifies the various SCSI ID values and the jumper positions required to set them.

Drive ID

ID 0

OFF

ID 1

OFF

ID 2

OFF

ID 3

OFF

ID 4

OFF

ID 5

OFF

ID 6

OFF

ID 7

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Atlas II

Jumper Settings

68-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

Note: Termination enable available on SE version only.

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

5 of 8

Atlas II

Jumper Settings

6 of 8

Stagger Spin

Enable spin stagger SS jumper on

Disable spin stagger SS jumper off

Write Protect

Enable Write Protection

WP jumper on

Disable W

rite Protection WP jumper off

Jumper Locations

The Atlas II wide disk drive has two locations where user configurable jumpers are found. The primary jumper block (Front

option connector J3) for the Atlas II wide 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 secondary option jumper block provides an

alternate method for setting primary drive features. The alternate jumper block is located at the rear of the drive and is

incorporated into the SCSI cable connector.

The termination power option setting is located on the front edge of the printed circuit board and is adjacent to the J3

connector.

Atlas II

Jumper Settings

7 of 8

Signal

ogic_gnd

Key

(blank) 1

0 F

ault LED

Delay

Spin 1

2 l

ogic_gnd

Logic ground

4 E

nable Active Termination

Spindle Sync

6 S

pindle Sync

Busy Led

8 +

5VDC out

rite Protect 2

0 l

ogic_gnd

Stagger Spin

2 l

ogic_gnd

Enabl

e Narrow Mode 2

4 l

ogic_gnd

Disable Sync Negotiation

6 l

ogic_gnd

Disable SCSI Parity

8 l

ogic_gnd

Disable Unit Attentio

n 3

0 l

ogic_gnd

Customize

2 l

ogic_gnd

Signal

in S

ignal

ault LED

ogic_gnd

usy LED

Enable Ter

mination 1

0 l

ogic_gnd

+5VDC out

2 (

reserved)

Note: Enable Termination setting is not supported on the following differential drives:

Atlas II 2.2GB WD

Atlas II 4.5GB WD

Atlas II

Jumper Settings

Atlas II 9.1GB WD SCSI ID SettingsThe following table identifies the various SCSI ID values and the jumper positions

required to set them.

Drive ID

ID 0

OFF

ID 1

OFF

ID 2

OFF

ID 3

OFF

ID 4

OFF

ID 5

OFF

ID 6

OFF

ID 7

OFF

ID 8

OFF

ID 9

OFF

ID 10

OFF

ID 11

OFF

ID 12

OFF

ID 13

OFF

ID 14

OFF

ID 15

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