All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 8 posts ] 
Author Message
 Post subject: ST318305LC how to change heads?
PostPosted: November 26th, 2018, 4:51 
Offline
User avatar

Joined: October 12th, 2011, 4:13
Posts: 134
Hello HDD Gurus,

I have this SCSI Drive that have the Heads damaged, but the problem is i can't remove the magnet to remove the original heads. Does anyone knows how to remove the magnet? i upload pictures from the strange magnet. The screws below the chassi only holds the magnet was one. Above only have one screw, in the other side is like a interior screw. Thank you very much. Regards :)


Attachments:
IMG-20181123-WA0013.jpeg
IMG-20181123-WA0013.jpeg [ 1.1 MiB | Viewed 5705 times ]
IMG-20181123-WA0011.jpeg
IMG-20181123-WA0011.jpeg [ 1.06 MiB | Viewed 5705 times ]
IMG-20181123-WA0009.jpeg
IMG-20181123-WA0009.jpeg [ 1.16 MiB | Viewed 5705 times ]

_________________
Data Recovery Technician - If Data is important don't DIY without knowing the real problem.
Top
 Profile  
 
 Post subject: Re: ST318305LC how to change heads?
PostPosted: November 27th, 2018, 16:55 
Offline
User avatar

Joined: June 23rd, 2008, 11:26
Posts: 503
Location: Austin, TX
disconnect the head cable from the PCB in the drive.Slide the heads off the platter and make sure they stay out of the platter. Put the cover back on and put the head screw in. Flip over and remove the head and magnet screws. Carefully flip back over and pull up the top cover with the heads and magnet attached. Unscrew the heads from the top cover and slide the heads out of the magnet.

Reverse procedure to get back in.

It is not fun

good luck


Top
 Profile  
 
 Post subject: Re: ST318305LC how to change heads?
PostPosted: November 27th, 2018, 17:03 
Offline
User avatar

Joined: October 12th, 2011, 4:13
Posts: 134
Okay, I see what you saying. Thank you very much.
Yeah, it's not easy at all... I change thousands of heads along my 10 years of work and no one was hard enough to make me think how the weck I remove this.. :lol: always learning. 8)
I'm going to make the procedure tomorrow, I will tell you how it did. Thank again mate. :D

_________________
Data Recovery Technician - If Data is important don't DIY without knowing the real problem.


Top
 Profile  
 
 Post subject: Re: ST318305LC how to change heads?
PostPosted: November 28th, 2018, 3:57 
Offline
User avatar

Joined: January 28th, 2009, 10:54
Posts: 3452
Location: Greece
Cleanroom wrote:
disconnect the head cable from the PCB in the drive.Slide the heads off the platter and make sure they stay out of the platter. Put the cover back on and put the head screw in. Flip over and remove the head and magnet screws. Carefully flip back over and pull up the top cover with the heads and magnet attached. Unscrew the heads from the top cover and slide the heads out of the magnet.

Reverse procedure to get back in.

It is not fun

good luck


This is the exact procedure. It is very difficult and you need to try hard to not mess it up.
Apart from everything else, I was very puzzled on how to keep the heads seperated (there is not enough space to work with them). I had to use a trimmed toothpick with glued seperators on it. Fun times.

_________________
http://www.northwind.gr
SandForce SSD Recovery
Ransomware Reverse Engineering - NoMoreRansom! partners


Top
 Profile  
 
 Post subject: Re: ST318305LC how to change heads?
PostPosted: December 3rd, 2018, 7:39 
Offline

Joined: August 18th, 2010, 17:35
Posts: 3636
Location: Massachusetts, USA
Cleanroom wrote:
Slide the heads off the platter and make sure they stay out of the platter.

There is a spacing problem sometimes due to the chassis pillar right in front of the disk where the heads would be coming off the disks. So, alternatively can leave the heads on the disks in parking area. After removing the chassis base as explained in earlier post, then can do regular head stack removal like on any heads-on-disk drives, except it is in weird/reversed manner.

_________________
Hard Disk Drive, SSD, USB Drive and RAID Data Recovery Specialist in Massachusetts


Top
 Profile  
 
 Post subject: Re: ST318305LC how to change heads?
PostPosted: December 3rd, 2018, 10:45 
Offline
User avatar

Joined: October 12th, 2011, 4:13
Posts: 134
Okay when i try to put the heads outside the platter, there is two cilinders that i can't remove. I try it with pliers but it doesnt came off. Here is more pictures of the issue.


Attachments:
20181128_113346.jpg
20181128_113346.jpg [ 2.53 MiB | Viewed 5390 times ]
20181203_144208.jpg
20181203_144208.jpg [ 4 MiB | Viewed 5390 times ]

_________________
Data Recovery Technician - If Data is important don't DIY without knowing the real problem.
Top
 Profile  
 
 Post subject: Re: ST318305LC how to change heads?
PostPosted: December 3rd, 2018, 16:09 
Offline

Joined: August 18th, 2010, 17:35
Posts: 3636
Location: Massachusetts, USA
labtech wrote:
Cleanroom wrote:
Slide the heads off the platter and make sure they stay out of the platter.

There is a spacing problem sometimes due to the chassis pillar right in front of the disk where the heads would be coming off the disks. So, alternatively can leave the heads on the disks in parking area. After removing the chassis base as explained in earlier post, then can do regular head stack removal like on any heads-on-disk drives, except it is in weird/reversed manner.

Explanation given

_________________
Hard Disk Drive, SSD, USB Drive and RAID Data Recovery Specialist in Massachusetts


Top
 Profile  
 
 Post subject: Re: ST318305LC how to change heads?
PostPosted: December 5th, 2018, 11:02 
Offline
User avatar

Joined: June 23rd, 2008, 11:26
Posts: 503
Location: Austin, TX
labtech is correct, if you cannot get the the head off cleanly from what i previously said, keep them parked on the platter and you will need to screw in the platter screw from the top as well and then unscrew the washer with the three gaps in it on the motor assembly under the drive and when you flip it back over you will be removing the full motor stack and heads and magnet.

so when you are done you top cover will have everything screwed into it when you slide the bottom casing off.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: ludespeedny and 43 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group