Mitsumi CRMC-FX001DE detected, device not ready \ VOGONS

Mitsumi CRMC-FX001DE detected, device not ready

Topic actions

Post a reply

First post, by bjwil1991

Posted on 2018-09-30, 04:43

bjwil1991 Offline

Rank l33t

Rank: l33t
Posts: 4024
Joined: 2013-08-14, 03:10
Location: SE, MI USA

I purchased a Double Speed Mitsumi CD-ROM drive at a thrift store that was in an NEC MultiSpeed 8x CD-ROM drive box with the fixings (IDE controller card, manual) and when I installed it into my Packard Bell Pack-Mate 28 Plus, everything went south. The CD Drive won't read CDs, however, in Windows 95C and MS-DOS, it gets detected.

This is what I get when I try to access the CD-ROM (also, the light turns on briefly and the motor clicks for a split second):

1MS-DOS
2
3A:\>dir D:
4
5CDR101: Not Ready Reading Drive D:
6(A)bort, (R)etry, (F)ail?
7

1Windows 95C
2
3D:\ is not accessible.
4The device is not ready.
5
6[Retry] [Cancel]
7

I also tried it in another system and it does the same exact thing.

Model: CRMC-FX001DE (has a Multimedia PC 2 emblem on the front end).
Connections:
1 Molex
1 IDE 40-pin (keyed)
1 Jumper selection (CS, SL, MA)
1 MPC audio out to sound card

Is it toast, or can it be fixed? It even says "no serviceable parts inside," which that's Mitsumi for you. I have another CD drive and it works, but, too new for a 486, and every IDE cable I have works (other CD drives and HDDs gets detected and work without issues). Cleaning the logic board connections for the laser assembly didn't help at all.

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to Ryzen 9 5950X
Twitch: https://twitch.tv/retropcuser

Reply 1 of 7, by derSammler

Posted on 2018-09-30, 09:48

derSammler Offline

Rank l33t

Rank: l33t
Posts: 3886
Joined: 2017-04-14, 11:30

Mitsumi drives were prone to fail. That's why they were cheap. The laser assembly is most likely toast.

Reply 2 of 7, by Koltoroc

Posted on 2018-09-30, 11:22

Koltoroc Offline

Rank Member

Rank: Member
Posts: 381
Joined: 2016-10-07, 23:21

DId this drive come with its interface card? It is not an IDE drive, Mitsumi drives of that age use a proprietary interface that only looks like IDE (40 pin ribbon cable) but it is not IDE. Alternatively, there are sound cards that have integrated mitsunmi interfaces.

There are 3 different proprietary CD interfaces, Mitsumi, panasonic and sony. Mitsumi and panasonic look identical so be careful about that, sony only has 34 pins.

Reply 3 of 7, by bjwil1991

Posted on 2018-09-30, 16:23

bjwil1991 Offline

Rank l33t

Rank: l33t
Posts: 4024
Joined: 2013-08-14, 03:10
Location: SE, MI USA

Koltoroc wrote:
DId this drive come with its interface card? It is not an IDE drive, Mitsumi drives of that age use a proprietary interface that only looks like IDE (40 pin ribbon cable) but it is not IDE. Alternatively, there are sound cards that have integrated mitsunmi interfaces.

There are 3 different proprietary CD interfaces, Mitsumi, panasonic and sony. Mitsumi and panasonic look identical so be careful about that, sony only has 34 pins.

With the DE, it's a IDE drive. Without it, that would require a sound card or interface card.

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to Ryzen 9 5950X
Twitch: https://twitch.tv/retropcuser

Reply 4 of 7, by SW-SSG

Posted on 2018-09-30, 18:02

SW-SSG Offline

Rank Oldbie

Rank: Oldbie
Posts: 673
Joined: 2016-09-29, 03:44
Location: Canada

bjwil1991 wrote:
(also, the light turns on briefly and the motor clicks for a split second): ...

Could the laser assembly be stuck? (I don't know how big the PCB in these drives is but it may be possible to observe the drive in operation with the bottom cover off.)

Reply 5 of 7, by bjwil1991

Posted on 2018-10-01, 01:26

bjwil1991 Offline

Rank l33t

Rank: l33t
Posts: 4024
Joined: 2013-08-14, 03:10
Location: SE, MI USA

SW-SSG wrote:
bjwil1991 wrote:
(also, the light turns on briefly and the motor clicks for a split second): ...

Could the laser assembly be stuck? (I don't know how big the PCB in these drives is but it may be possible to observe the drive in operation with the bottom cover off.)

The laser assembly does move, but, the spindle where the CD drive sets on doesn't move. I can hear the laser go up and down and I see the light going through. I also plugged it into my laptop using an IDE to USB (external HDD enclosure), detected it, but still nothing. I suspect the spindle motor where the CD resides on that makes the CD get read (the CD activity indicator is now flashing). Getting closer.

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to Ryzen 9 5950X
Twitch: https://twitch.tv/retropcuser

Reply 6 of 7, by SW-SSG

Posted on 2018-10-01, 01:59

SW-SSG Offline

Rank Oldbie

Rank: Oldbie
Posts: 673
Joined: 2016-09-29, 03:44
Location: Canada

Indeed, there's your problem; the CD needs to be rotating for the drive to read it at all.

Reply 7 of 7, by bjwil1991

Posted on 2018-10-01, 14:33

bjwil1991 Offline

Rank l33t

Rank: l33t
Posts: 4024
Joined: 2013-08-14, 03:10
Location: SE, MI USA

The CD does rotate just for a split second, the laser does pivot (I even moved it to the end and the laser still moves forward), and I think I found the issue: one of the chips has brown stuff on the pins. My plan is to remove that chip or clean that area, and hope for the best.

Edit: still the same results. So, my issue is the motor that spins the disc isn't working any longer or not receiving power.

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to Ryzen 9 5950X
Twitch: https://twitch.tv/retropcuser

Go to top of page Go to top of page

Back to General Old Hardware

Main menu

Common searches