Apple External Hard Drive Sc Service Manual

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K Service Source

External Hard Drive SC

K Service Source

Exploded View

External Hard Drive SC

Exploded View

1

 

 

 

Exploded View

Cover

HDA-to-Case Cable

LED Cable Assembly

Fan Frame

 

 

 

 

Fan

 

 

SCSI Select Switch

 

 

SCSI Select Switch Cable

 

Hard Drive Mechanism

Power Supply

 

 

 

 

 

 

 

 

 

K Service Source

Take Apart

External Hard Drive SC

Take Apart Cover - 1

Cover

No preliminary steps are required before you begin this procedure.

Cover Note: This Take Apart chapter applies only to the Apple external hard drive series (20SC, 40SC, 80SC, or 160SC). For Take Apart procedures internal drives, see the manual for the computer that contains the drive.

Take Apart

Cover - 2

 

 

 

 

1 Locate the two holding

 

tabs on the rear of the

 

hard drive, inside the

 

ventilation slots.

2

Using a jeweler’s

 

screwdriver, press in

 

gently on the two

 

holding tabs as you push

 

the cover up slightly.

 

 

 

 

 

 

 

 

 

 

Take Apart

Cover - 3

 

 

 

 

 

 

3 Locate the four tab holes,

 

two on each side of the

 

hard drive.

 

4 Starting with the rear

 

holes, insert the

 

jeweler’s screwdriver

 

straight into each of the

 

holes. Nudge the cover

 

upward as you release

 

each tab.

 

Note: Prying is not

 

necessary and may damage

 

the case.

 

 

 

 

 

 

 

 

 

 

Take Apart

Power Supply - 4

 

 

 

Power Supply

Before you begin, remove the cover.

Caution: Review the ESD

Power Supply precautions in Bulletins/

Safety.

Take Apart

Power Supply - 5

 

 

 

 

 

 

1 Press down on the back

 

of the power supply,

 

push back the power

 

supply tab, and lift the

 

power supply.

 

 

 

 

 

 

 

 

 

 

Apple External Hard Drive Sc Service Manual

Take Apart

Power Supply - 6

 

 

 

Fan

Cable

2 Disconnect the power supply connector from the hard drive

Power Supply mechanism.

Note: On some hard drive mechanisms, the power supply connector is on the opposite side of the hard drive.

3 Disconnect the fan cable.

4 Lift the power supply free.

Power Supply

Connector

Take Apart

Hard Drive Mechanism - 7

 

 

 

Hard Drive

Mechanism

Before you begin, remove the cover.

Caution: Review the ESD precautions in Bulletins/ Safety.

Hard Drive

Mechanism

Take Apart

Hard Drive Mechanism - 8

 

 

 

 

1 Push back the large tab,

 

slide the hard drive

 

mechanism up, and rest

 

it on the edge of the case.

Tab

Hard Drive

Mechanism

 

Take Apart

Hard Drive Mechanism - 9

 

 

 

 

2

Disconnect the power

 

 

supply.

SCSI Select

Note: On some hard

drive mechanisms, the

Switch Connector

power supply connector

 

 

 

 

is located on the

 

 

opposite side of the hard

 

 

drive.

 

3 Open the end tabs (if

 

 

present) on the hard

 

 

drive data cable

 

 

connector and disconnect

 

Power

the cable from the hard

 

drive mechanism.

 

Supply

Connector

 

 

HDA-to-Case

Cable

Hard Drive Mechanism

Take Apart

Hard Drive Mechanism - 10

 

 

 

 

4 Disconnect the SCSI

 

select switch connector

 

and lift the hard drive

 

mechanism out of the

 

case.

 

Note: Skip the following

 

steps if you are replacing a

 

20 MB or a 160 MB

 

external hard drive. Return

 

these drives to Apple in

 

their original carriers.

Take Apart

Hard Drive Mechanism - 11

 

 

 

 

SCSI Select

LED Cable

Switch

 

Edge of 3.5 Drive

Note: Four screws hold the 5.25-inch hard drive along the bottom edge of the carrier.

5Turn the drive over and remove the four screws near the center of the metal carrier. Use this carrier to install the service replacement module.

6Disconnect the LED cable and SCSI select switch from the hard drive mechanism.

Take Apart

Hard Drive Mechanism - 12

 

 

 

 

 

 

Note: Review “Carrier

 

Removal,” “Modifying 5.25

 

Drives,” or “Modifying 3.5

 

Drives” in Additional

 

Procedures before you

 

install the new service

 

replacement drive.

 

 

 

 

 

 

 

 

 

 

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