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
Pin
S ignal P in S ignal
1
A0
2
logic_gnd
3
A1
4
logic_gnd
5
A2
6
logic_gnd
7
Fault LED
8
key (blank)
9
Busy LED
1
0 Spindle Sync
11
+5VDC out
1
2 unused
13
Delay Spin
1
4 logic_gnd
15
Stagger Spin
1
6 logic_gnd
17
Write Protect
1
8 logic_gnd
19
Spindle Sync
2
0 logic_gn
The drawing above displays the jumper block physical location and pin definitions.
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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
A0 A1
A2
ID 0
OFF OFF OFF
ID 1
ON OFF OFF
ID 2
OFF ON OFF
ID 3
ON ON OFF
ID 4
OFF OFF ON
ID 5
ON OFF ON
ID 6
OFF ON ON
ID 7
ON ON ON
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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
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Atlas II
Jumper Settings
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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
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Pin
Signal Pin
Signal
1
A3 2 l ogic_gnd
3
A2 4 l ogic_gnd
5
A1 6 l ogic_gnd
7
A0 8 l ogic_gnd
9
Key (blank) 1 0 F ault LED
11
Delay Spin 1 2 l
ogic_gnd
13
Logic ground 1 4 E nable Active Termination
15
Spindle Sync 1
6 S
pindle Sync
17
Busy Led 1 8 + 5VDC out
19
W rite Protect 2 0 l ogic_gnd
21
Stagger Spin 2 2 l ogic_gnd
23
Enabl e Narrow Mode 2 4 l ogic_gnd
25
Disable Sync Negotiation 2 6 l ogic_gnd
27
Disable SCSI Parity 2 8 l ogic_gnd
29
Disable Unit Attentio n 3 0 l ogic_gnd
31
Customize 3 2 l ogic_gnd
Pin
Signal P in S ignal
1
A0 2 F ault LED
3
A1 4 l ogic_gnd
5
A2 6 l ogic_gnd
7
A3 8 B usy LED
9
Enable Ter mination 1 0 l ogic_gnd
11
+5VDC out 1 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
A0 A1 A2 A3
ID 0
OFF
OFF
OFF OFF
ID 1
ON OFF OFF OFF
ID 2
OFF ON OFF OFF
ID 3
ON ON OFF OFF
ID 4
OFF OFF ON OFF
ID 5
ON OFF ON OFF
ID 6
OFF ON ON OFF
ID 7
ON ON ON OFF
ID 8
OFF OFF OFF ON
ID 9
ON OFF OFF ON
ID 10
OFF ON OFF ON
ID 11
ON ON OFF ON
ID 12
OFF OFF ON ON
ID 13
ON OFF ON ON
ID 14
OFF ON ON ON
ID 15
ON ON ON ON
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