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<WRAP tablewidth column 30% right>
{{METATOC}}
~~NOTOC~~ \\
^ Manufacturer    | Mitsumi / \\ Newtronics |
^ Model    | D509V3 |
^ Density    | <abbr>High Density (HD)</abbr>, <abbr>Double Density (DD/2D)</abbr>  |
^ Sides    | <abbr>Double Sided (DS/2S)</abbr>, <abbr>Single Sided (SS/1S)</abbr> |
^ Rotation speed | 300, 360 |
^ Maximum seekable tracks   | 84 |
^ Interface | Shugart \\ (PC-AT compatible) |
^ Data Connnector | 34 position card edge |
^ Power Connnector | 4 pin Molex |
^ Head movement | Leadscrew |
^ Head loading | Mechanical |
^ Disk loading | Lever |
^ Known colors |<WRAP>
| <colorswatch #E7E9E9: > | White |
| <colorswatch #121114: > | Black |
</WRAP>|
</WRAP>
====== Mitsumi/Newtronics D509V3 ======
The D509V3 is a 5.25" double sided high density floppy drive made by Mitsumi and Newtronics.
It uses a leadscrew to facilitate head movement and locks the disk with a lever. Head loading is done with via mechanical linkage.

It uses the [[#mec_3v0|MEC 3v0]] control board and the Mitsumi 69-3147 motor board.
===== Pictures =====
| {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:back.jpg?200 |}} | {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:top1.jpg?200 |}} {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:top2.jpg?200 |}} | {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:bottom.jpg?200 |}} |
| {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:front1.jpg?200 |}} \\ {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:front2.jpg?200 |}} | ::: | ::: |
| {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:pcb.jpg?200 |}} | ::: | {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:label1.jpg?200 |}} \\ {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:label2.jpg?200 |}} |
===== Jumper settings =====
==== MEC 3V0 ====
{{ :5_25_floppy_drives:mitsumi_newtronics_d509v3:mec_3v0.pdf |}}
++++View PDF|
{{pdfjs 100%,800px>:5_25_floppy_drives:mitsumi_newtronics_d509v3:mec_3v0.pdf?page-width}}
++++
===== Common issues =====
==== Broken solder joints on power connector ====
The solder joints of the power connector can break over time and after repeated plugging and unplugging.
\\ {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:fix_powerconnector_1.jpg?200|}} \\
This causes problem with power delivery to the drive resulting in abnormal behaviour.
\\ {{:5_25_floppy_drives:mitsumi_newtronics_d509v3:fix_powerconnector_2.jpg?200|}} \\
To fix this issue the solder joint have to be simply re-soldered.