[ IDENTIFIED PC FLOPPY DRIVE ]
Panasonic JU-475-5 5.25-inch PC floppy drive
A 5.25-inch half-height, double-sided HD drive in Panasonic's JU-475 series. The exact suffix matters: service settings for the JU-475-2/-4 and JU-475-5 are not interchangeable without checking the model documentation.
Documented specifications
| Density / capacity | Double-sided, 80-track/96-TPI high density; 1.2 MB formatted HD and 360 KB PC DD media support, with low-density interchange subject to speed and alignment. |
|---|---|
| Interface | 34-pin PC-compatible signal connector and 4-pin +5 V/+12 V power. |
| Data rate / speed | 500 kbit/s HD; 250 kbit/s DD; 360 rpm HD and 300 rpm low-density mode as configured. |
| Jumpers / drive select | JU-475-series select and function jumpers configure drive address, motor, ready/disk-change and speed options. Set the marked DS position for the cable twist; use the JU-475-5 manual/label for exact positions. |
| Dimensions / power | 41.5 × 146 × 196.5 mm half-height; +5 V 0.44 A typical/0.5 A max, +12 V 0.26 A typical/0.8 A max; 4-pin power. |
| PC controller compatibility | IBM PC/AT-compatible 765-family controller configured for a 5.25-inch 1.2 MB drive. Do not presume correct 360 KB interchange without a tested alignment and controller setup. |
Preservation notes
Keep the complete suffix in all collection records. Photograph the DIP/jumper area and resistor pack; capture baseline operation and test-disk identity before cleaning or adjustment. Avoid writing to original media during initial diagnostics.
Manuals & archive sources
- Panasonic JU-475-5 AKO model record — retrocmp archiveModel-specific identification, specifications, and the owner's tested jumper configuration.
- Panasonic JU-475 OEM manual — BitsaversManufacturer OEM manual for the JU-475 series; verify suffix-specific details against the JU-475-5 label.
- Panasonic JU-475 technical archive — ApplesaucePreservation-oriented specifications and configuration reference.