Apple External Hard Drive 40SC

[bobo68]

Hi,

I just acquired a 40SC in its original state from end of 80s. I thought this might be useful as a reference.

Luckily the Service Source for this hard drive family (20SC, 40SC, 80SC, or 160SC) is still available: http://tim.id.au/laptops/apple/misc/external_hard_drive_sc.pdf so it is easy to see how the enclosure can be opened.

Sadly my drive came with broken clamps for the power supply: 



The 40SC has a 5 1/4" Quantum SCSI drive in it (other members of the family have 3 1/2" drives):



In typical Apple style of that time the drive can be disassembled mostly without screws, everything is clamped to the chassis. Even the fan assembly:



Detach the LED cable:



Detach the SCSI selector cable:



The drive mechanism itself is screwed onto its carrier. The carrier can also accept 3 1/2" drives:



The board of the Quantum drive is full of discrete parts:





Cheers,

bobo68

 

[bobo68]

Today the drive (mechanism) died. The platters spin up and then the drive makes 4 repeating sounds as if the heads are stuck and it tries to make them move. After nearly 30 years that's ok I guess. RIP.

 

[techknight]

Its a quantum. To be expected. Melted rubber inside thd drive.

 

[NJRoadfan]

My 40SC's Quantum drive does the same thing. It had a long life, I'm surprised it lasted this long to be honest.