HP 9114 Repair Parts
12-30-2013, 08:05 PM
Post: #1
 Dave Frederickson Senior Member Posts: 1,693 Joined: Dec 2013
HP 9114 Repair Parts
Here's some updated information on repair parts for 9114 floppy drives. First, thanks to Tony Duell for the schematics and repair procedure.
Replacement drives for a 9114A, 09114-69511, Sony OA-D32W-11, can be found in 9133, 9121D/S, and 9122D/S (S/N 2518A and below) disk drives. Drives for a 9114B, 09123-69101, Sony MP-F52W-50, can be found in 9153, 9123D, and 9122D/S (S/N 2614 and above) disk drives.
Battery - Powersonic PS-628 on Amazon, $10. Build up one edge with double-sided foam tape to keep it from rattling around. MC68B09 CPU - Amazon,$9.
MC68B21P PIA - EBay, 2 for $4. WD2793A WD Floppy Drive Controller - Ebay,$14. With HP part number!
5A pico fuse - Mouser 576-0251005.HAT1L
HP 1LB3-0003 HP-IL chip - Can be found on the I/O PCA of 2225A (yes, HP-IB) printers.

Dave
12-30-2013, 11:44 PM
Post: #2
 Raymond Del Tondo Member Posts: 241 Joined: Dec 2013
RE: HP 9114 Repair Parts
Hi Dave,

many thanks for the combined info:-)

I currently have an A and a B drive.

The A drive had the (I think) typical problem of a nonfunctional disk case lift mechanism. It turned out to be a mechanical problem. One of the slide bolts on the right side wasn't sliding due to missing lube. You couldn't insert or eject a disk.

After applying some lube to the said part it worked fine again.

From the mechanical construction I assume this is one of the main reasons for drive mechanism failures, since this bolt doesn't have a real bearing but only a rivet holding it in place.

The B drive would work fine, if there wasn't the spindle motor which revs up when trying to access the disk. Since it looks like a direct drive motor (I may be wrong) , and the driver bolt in place, I don't know why the motor just hauls permanently instead of simply positioning the disk and stopping.

Any ideas?

-- Ray
12-31-2013, 03:34 AM
Post: #3
 Dave Frederickson Senior Member Posts: 1,693 Joined: Dec 2013
RE: HP 9114 Repair Parts
Hi Raymond,

Sorry, I'm not an expert when it comes to repairing the Sony drives. I was lucky to find a 9114A and am looking for a 9114B. In order to keep my collection working I acquired two 9122D drives. The one with the "A" type drives had already been used for spares. The "B" type drive yielded two good drives! When I find a 9114B I plan on trying to get one good "A" drive from the two bad ones.