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My IBM 5160 - questios.
- Thread starter Luke
- Start date
dongfeng
Veteran Member
Yes, I have two of them, they are 256kB. I put one in my 5150 with 5151 
I'am starting general cleaning.
I pulled all cards from XT and realized, that they are all original.
Inside ext. chassis there are two dates (day (!), month and year).
One is on plastic part and another on metal part.
The say when parts were produced? Or lastest say date of finishing machine?
I pulled all cards from XT and realized, that they are all original.
Inside ext. chassis there are two dates (day (!), month and year).
One is on plastic part and another on metal part.
The say when parts were produced? Or lastest say date of finishing machine?
dongfeng
Veteran Member
They are dates when that part was produced. I found that they can vary in dates, the largest gap being 5 months! Take the latest date, and that should be approximately when the computer was assembled.
I always took the paper sticker on the chassis to be the "complete" date, on all 3 of my machines it is the latest of them all.
I always took the paper sticker on the chassis to be the "complete" date, on all 3 of my machines it is the latest of them all.
dongfeng
Veteran Member
Actually, I just remembered. In my XT there was a cloth tag attached to the power supply cables. It was an inspection sheet, so I think that would have been added when the computer was assembled. I forgot the date on it already.
dongfeng
Veteran Member
My XT:
Chassis: 11 July 1986
Floppy card: 8629 (July 1986)
Mainboard: 8611 (March 1986)
PSU: 2786 (June/July 1986)
Case front: 12th July 1986
Case lid: 31st May 1986
Cloth Tag: 8th July 1986
I don't really want to remove the drives to check those right now:
The XT was bought new on 11th September 1986.
Chassis: 11 July 1986
Floppy card: 8629 (July 1986)
Mainboard: 8611 (March 1986)
PSU: 2786 (June/July 1986)
Case front: 12th July 1986
Case lid: 31st May 1986
Cloth Tag: 8th July 1986
I don't really want to remove the drives to check those right now:
The XT was bought new on 11th September 1986.
modem7
10k Member
According to the Internet, an IBM p/n 21F4250 is a 314MB hard drive from an IBM 5363
http://en.wikipedia.org/wiki/IBM_5363
http://en.wikipedia.org/wiki/IBM_5363
carlsson
Veteran Member
Isn't that an ESDI hard disk? Some 314-387 MB capacity, according to various Internet sources (maybe depending on exact model).
Cyl.....Head...WPC..Sec.....Cap.
306.....4.......0........17......10
640.....6.......256.....17......32
697.....5.......none....17......29
640.....4.......256.....17......21
697.....3.......none....17......17
612.....2.......128.....17.....10
306.....8.......0.......17......20
512.....6.......256......17......26
640.....5.......none....17......27
306.....4.......0........17......10
512.....4.......256.....17.......17
306.....2.......none....17.......5
306.....6.......256......17.......15
375.....8.......0........17..........25
306.....2.......0........17..........5
Can I use St-225 with any of these settings?
I want to install it in my 5160, until I find full height 10 Meg disk.
306.....4.......0........17......10
640.....6.......256.....17......32
697.....5.......none....17......29
640.....4.......256.....17......21
697.....3.......none....17......17
612.....2.......128.....17.....10
306.....8.......0.......17......20
512.....6.......256......17......26
640.....5.......none....17......27
306.....4.......0........17......10
512.....4.......256.....17.......17
306.....2.......none....17.......5
306.....6.......256......17.......15
375.....8.......0........17..........25
306.....2.......0........17..........5
Can I use St-225 with any of these settings?
I want to install it in my 5160, until I find full height 10 Meg disk.
Did you get the original Seagate ST-412 to work ?
I have a 5160 which has a dead (bad track 0) ST-412. I was
planning to try the trick of moving the Track 0 position by turning
that very small screw on the stepper motor arm. This was
mentioned in another forum post....
But I haven't been able to find an allen wrench small enough to fit
that screw !
If I can't get this ST-412 to work, I'm planning to put a different controller WD-1002 in my 5160 with a 20MB drive.
I tough, that I resolved the problem, but it came back.
My ST-412 need to warm up, it's propably tired.
I don't have any other free controller.
Only DTC 5150BX4 and it don't have option for ST-225, but I should be able to use similar settings.
My ST-412 need to warm up, it's propably tired.
I don't have any other free controller.
Only DTC 5150BX4 and it don't have option for ST-225, but I should be able to use similar settings.
dongfeng
Veteran Member
On the case, as long as you don't press too hard it will be fine. On the 5153, be very careful on the grey area surrounding the screen, and also case logo is fragile.
Be very careful on the 5153... you don't want to get it wet... clean it dry on the top and only ever so slightly damp cloth...
Be very careful on the 5153... you don't want to get it wet... clean it dry on the top and only ever so slightly damp cloth...
I see, 5153 around screen at bottom is white already .
And what about cleaning 5153 inside?
Dust isn't good for monitor...
I've cleaned one (not IBM) and it was horrible to put guts inside again.
Cleaning 5153 is hard too?
.And what about cleaning 5153 inside?
Dust isn't good for monitor...
I've cleaned one (not IBM) and it was horrible to put guts inside again.
Cleaning 5153 is hard too?
dongfeng
Veteran Member
You have to be careful if you dismantle, since electric discharge from CRT is very high!
I removed back cover, and cleaned it away from 5153, you can clean it well that way. The inside CRT part I used air gun to blow as much dust as possible, but I did not touch anything, just air.
The front I used damp cloth with small brush, but very careful not to get it wet.
I removed back cover, and cleaned it away from 5153, you can clean it well that way. The inside CRT part I used air gun to blow as much dust as possible, but I did not touch anything, just air.
The front I used damp cloth with small brush, but very careful not to get it wet.
modem7
10k Member
Luke,
There is a good chance that the DTC5150BX will support a ST-225 (or any other drive). When I look at the details of that board in TH99, one of the drive type settings is "Reserved for non-standard". In my experience, that entry is there to allow for drives non covered by the other switch settings.
Try this:
1. Connect the ST-225.
2. Set switch settings 3/4/7/8 for "Reserved for non-standard".
3. Boot up on a DOS floppy.
4. Run DEDUG.
5. Enter "G=C800:5" (without the quotation marks).
At this point, I'm expecting that the DTC5150BX will start asking questions, eg. how many cylinders, how many heads, and so on.
Once you answer all of the questions, the DTC5150BX will do a low-level format. The DTC5150BX will reserve one cylinder/track for itself (that's where it stores the cylinder/heads/WPC info).
Give it a go - worth a try.