Seagate ST318451LW/LC, ST39251LC Troubleshooting, Seagate support services

Drive with
HDA up, PCB
down, viewed	Pin 1
from front
	HDA

											J6
		L	R
	Reserved E		E A	3	A	2	A	1	A	0
		D	S
Reserved
Remote		11
LED		12									CATH

Shipped with cover installed.

Do not remove.

Do not install jumpers on these four positions.

J6 Jumper

Drive Front J6

Pin 1

End

J2

Pin 1

DC Power

Connector

J1

J2 Jumper

SCSI I/O

Connector

J2

Reserved Positions

Delay Motor Start option (valid only if the Enable Motor Start jumper is not connected)

Disable the Delay Motor Start option.

Motor start delay equal to the

SCSI ID multiplied by 12 seconds.

Motor Start option

Disable motor start (default). The drive starts according to the Delay Motor Start option.

Enable motor start. The drive waits for the Start Unit command from the host before starting the spindle motor.

Write Protect option

Write protect = Off (enables writing).

Write protect = On (disables writing).

Parity Check option

Enable parity check of SCSI bus.

Disable parity check.

Single-ended I/O

A jumper here forces single-ended

I/O operation.

No jumper allows host to select either single-ended or LVD operation.

Terminator Power

Term. Power to SCSI Bus

Host adapter or other device provides term. power to external terminator.

Pin 1

(default)

(default)

(default)

(default)

(default)

(default)

inoperable. A low level format, with verify turned on, will typically take two hours.

Protect against power failure or other power interruptions during the format.

a.Turn on DC power to the host system.

b.Boot the system from a system floppy, CD, or from a previously installed hard disc drive if there is one.

c.Format the drive.

Caution. Formatting a drive erases all user data. Be sure that you under- stand this principle before formatting any hard disc drive. It is not necessary to format a drive that previously has been used to store data, unless your intention is to erase all user data. Seagate is not responsible for lost user data.

Cheetah X15 disc drives are designed to operate with a variety of operating systems. Please refer to your system or SCSI controller manual for informa- tion about formatting and setting up the drive. Some quick desktop system notes are provided below.

•MicrosoftTM. Set the drive type in CMOS to “Zero,” “None,” or “No hard drive installed.” Use FDISK.EXE and FORMAT.EXE. Systems using Win- dows 98 or later can create one single partition (drive letter) on the drive.

•MacintoshTM. Use a third-party drive utility (most revisions of Apple’s HD Setup utility only work with drives having special Apple firmware).

Troubleshooting

•	Drive does not spin up. Check cables and all jumper settings. Make
	sure cable pin 1 (edge stripe) matches PCB pin 1.
•	Drive spins, but no LED on/off activity. Check SCSI ID setting. Set the

Figure 2. Option select jumpers.

4. Connect the drive activity LED (optional)

Connect the Drive Activity LED cable to J6 pins 11 and 12 (see Figure 2), or connect a drive ID and Drive Activity LED cable to J5, depending on host system requirements.

5. Check the other available jumper settings

Select other options on J2 as illustrated in Figure 2. Do not change these unless instructed to do so by the host system documentation.

6. Mount the drive in the host system and connect cables

Note. LC drives are designed to be attached to a carrier or tray and inserted into the host system without I/O or power cables.

a.Mount LW model drives to the host system’s chassis using four 6-32 UNC screws. Two mounting holes are in each side of the drive and there are four mounting holes in the bottom of the drive. Do not over-tighten or force the screws. You can mount the drive in any ori- entation.

b.Connect the SCSI I/O cable into the drive’s SCSI connector. Take care not to stretch or crimp this cable, and do not block the system’s cooling air flow with the cable.

Note. For Ultra2 and faster operation, special twisted pair LVD cables are required.

c.Connect the DC power cable to the drive. See Figure 3.

Ultra160 or Ultra2 LVD bus segment

	Pin 1
	(check your
	adapter for
	Pin 1 location)
	SCSI LVD/SE
	SCSI SE
SPI-2 compliant
active LVD
external terminator
on the end of	Twisted Pair
the cable
	LVD Cable Host
	Adapter
	PCB

Ultra SCSI SE bus segment

Figure 3. Cable connections and external termination

7. Format the drive

The drive has been low level formatted at the factory. You do not need to perform another low level format on this drive unless you decide to perform certain diagnostics through the host adapter. If you do decide to perform a low level format, do not abort the format as this is likely to make the drive

ID so that each device on the SCSI chain has its own unique ID. See also

the next item below. Host I/O controller is usually ID7.

• Computer does not seem to recognize the drive. Verify that the drive

is enabled by the SCSI host adapter setup utility.

• FDISK does not detect the drive. Run the FDISK program located on

your Windows startup diskette. Type fdisk/status to verify that your hard

drive is present.

Seagate support services

For online information about Seagate products, visit www.seagate.com or e- mail your disc questions to DiscSupport@Seagate.com

If you need help installing your drive, consult your dealer first. If you need additional help, call a Seagate technical support specialist. Before calling, note your system configuration and drive model number (ST318451LW or ST318451LC).

Africa	+31-20-316-7222	Poland	00 800-311 12 38
Australia	+61-2-9725-3366	Spain	900-98 31 24
Austria	0 800-20 12 90	Sweden	0 207 90 073
Belgium	0 800-74 876	Switzerland	0 800-83 84 11
Denmark	80 88 12 66	Singapore	+65-488-7584
France	0 800-90 90 52	Taiwan	+886-2-2514-2237
Germany	0 800-182 6831	Turkey	00 800-31 92 91 40
Hong Kong	800-90-0474	United Kingdom	0 800-783 5177
Ireland	1 800-55 21 22	USA/Canada/	1-800 SEAGATE or
Italy	800-790695	Latin America	+1-405-936-1234
Middle East	+31-20-316-7222	Other European
Netherlands	0 800-732-4283	countries	+31-20-316-7222
Norway	800-113 91

Warranty. Contact your place of purchase or our web site (above).

Return Merchandise Authorization (RMA). Before returning the drive, verify that it is defective. Seagate Worldwide customer service centers are the only facilities autho- rized to service Seagate drives. Contact nearest center for return procedures and trade regulations.

Shipping the drive

Caution. Back up the data before shipping. Seagate assumes no responsibility for data lost during shipping or service. Shipping drive in an unapproved container voids the warranty. Pack the drive with original box and packing materials. Use no other materials. This prevents electrical and physical damage in transit.

© 2000 Seagate Technology, LLC All rights reserved

Publication number: 83329485, Rev. B, September 2000, Printed in U.S.A.

Seagate, Seagate Technology, the Seagate Logo, and Cheetah are either registered trademarks or trademarks of Seagate Technology, LLC. All other trademarks are the property of their respective owners.