Petter Halonen

update: There is trafic on I2C line ( SDA, SCL). I have cleaned the riboncabels and inspected them. They seem to be ok. Next thing is to once again have a look at the mecanic, and see if the switches are in the correct potition. Later I will have a friend over to have a look , new eyes culd see something I don't see....

Thank you! You are right. I shuld not make it more complex than it is. I know that the main controler is ok. In Check mode C35, the over write head goes down when I puch yes and up when I push no.

Update: I have now used my Osciloscope and mesured different clock signal on the BD board. ic201: pin20 (OSCO) ok, pin34(LRCK) ok, pin35 (XBCK) also ok. So the servoprosessor get voltage and clk signal. In my head, an ic that get voltage and clk shuld give somting out, or it is toast and need to be replaced. I can get a ned IC on net but it is quite expensive, alternativly I can find a spare md-player whit another fault and take the prosessor from that one.

The disc load was in Service Mode, no respons to eject. I can exit sevicemode and enter standby. They look ok to me, only the disk does not spinn up. I'm thinking maby something wrong whit IC201 or the riboncable, the signal from cpu to BD on pin 15 IC201 ? It is geting late here, Tomorrow I wil clean the riboncables and get my osciloscope to se if there are any signal on ic201 pin 34 and 35. Thank you for helping me Petter

C18: evything ok C29: can't get to it jumps from C27 toC31 IopRead isC26 : 56.4/55.7 C34 : it load the disk but does not spinn up or run the sled.

Can you read anything out from this video? It is in testmode. there are some numbers saying ok and other saying NG... MDS-JB980_testmode_information.mp4

I did try that. nothing happend. sorry

So how do you want me to test that?

The machine was unplugged.

Nothing happend when I pressed MUNEU/NO ,so I took out the power. I put the robon back and everything is like before. I don't think I damaged anything.

I took it of because, I read someone had fixed a problem like mine that way. The took of teh jumper waited a few second and put it back, then when they put the main socket in the MD-player was ok. I mesured the battery it is 2.8V, so maby litle low? It shuld be 3,2V?

The jumper is back . The NetMD button does not do anything.

I mesured them on pin3 of ic926(2.6V) and ic933(3.3V) 5V I mesured on pin1. GND on chassis. I disconected the ribbons but the display was black, so I conected the long ribon and tryed again, then I got the message you can se on the picture.

The Iop value is 56.4/55.7 The voltages are: 5V -> 5.12V, 2,6V->2,6V, 3,3V->3,3V also I once did get it to insert the disk

It cliks one time when I reconect the power. If I take out the jumper wait for a bit then reinstal the jumper and reconect the power it cliks twice. But after that it clik one time.

I have trippel checked the drive. everything looks like it is suposed to. Also checked the riboncables. This machine beats me, in my head everything seams to be ok and it shuld be behaving normaly. Is there any protection modes were the CPU shuts down if something is wrong?

The belt was not broken the rubber was old and did not grip corectly. I happen to have a video of the fault whitch I will atatch.( The disk finaly came out after I stoped filming.) I bought a new belt from Germany spesific for MDS-JB980. MDS-JB980ejecterror.mp4

Everything went like Kgallen said exept it was dead after nuber 7. I have tried the timer switch, nothing happens, it is in the timer off potition as I never uses it.

As *I am an proffesionel radio/TV repairman I know the danger of lasers. The thing is I have repaired many MD-players and CD-players before, but never seen this fault. The sleede does move frealy . The long riboncable is the rigt way as you can see from added pictures. Adding more pictures of the mecanic for you to see. and also mp4 file of how it was before it died. MDS-JB980_before.mp4

Did what you told me, but no luck. still dead. The mecanic is not jamed in any way. I can easely turn the engine by hand and eject the disk..

I took both of them out and reseted them, then I mesured that there were contact. Still the player is dead.

I can get it in to servicemode by pushing ams and stop simuntanuasly while plugging in the main lead. The mecanic seems to be dead, does not respond to << or >> neighter can I insert or eject a disk, ecsept once it did actualy insert the disk. It does not spinn up the disk. No respons on USB and no play back. What bother me is that it is not in proper standby. the viltages are there and the rele has switch on, but the display is black, the standby led is litt and the mecanic is dead.

I have got the exact same problem on mine, exsept that I can't find what is the problem. It started whit me changing the ruberbelt, but after puting everything back together it is dead. I have mesured all the voltages and everything seems to be fine, all the switches are ok and in corect position, but the display is black and the standby led is on. I can put it in servicemode and the display works like it is suposed to do and I can go thru all the diferent tests.. I have mesured all the flat cables and they are ok. Does anybody have any clue to what is going on? Petter Halonen