[vtech]

Should be ok. Only if you have any issues with pixelating video on a known good disc. Azimuth adjustmant is about the only thing if/when there may be a problem.

[smata67]

I should be getting the BA chip soon. I will have good motors in due to having changed the traverse assembly, is there anything else I should replace or do I just change the BA chip. I understand there may be some adjustments if it all works, though I did not need to make any to the RP62 after I installed the laser assembly from the S2300.

[vtech]

Aha, I see now... It's been a while. All this time I thought the BA Ic was included on the terminal board that sits under the two motors(some Panasonics were). Obviously, that is NOT the configuration you have and indeed it appears to be mounted on the DVD module.
In that case I can pretty much assure you that the BA IC will fix the problem. Only thing is if you have not worked with SMD's, be extra careful in removing the IC as it is very easy to damage the traces on the board. Make absolutely sure the solder is melted before pulling on any leg of the IC(without overdoing it). Probably the most difficult part is going to be the wide heatsink tabs at either side of the chip.

As far as the spindle motor failure, it is mainly refering to the arcing brush that was one of the causes of the BA IC failure.

[smata67]

I removed the traverse assembly which has the spindle and tray motors as well as the optical assembly from an RP62 and installed it in the S2300. The terminal pcb (that mounts on the bottom of the traverse) from the s2300 was put on this assembly. The laser from the RP62 is the RAF3023, the original laser on the s2300 is the RAF3022, but they appear to be interchangeable. After doing this, all remained the same with the s2300. The assembly from the s2300 (traverse and optical with the RAF3022) I went ahead and installed on the RP62 and it works fine with no adjustments. The BA chip is on the SACD PCB which is buried in the unit. There is a current source for this chip on ebay. It will be my first shot at installing an SMD IC. I plan on using a pick and iron, lifting off each leg at a time after going over them with braid. I will then hit each pin one by one to reinstall. I see a technique on diyaudio where a bunch of solder is just placed across all pins and then cleaned up, but I think I can make it work.

I found some discussion that blames the spindle motor failures (which apparently I have not experienced, as the unit worked on the RP62) on the tray clamp assembly. The s2300 has a plastic disc atop the cd that the RP62 clamp assembly (which would work on the s2300 also) does not. I am going to go ahead and use the original one with the plastic disc.

[vtech]

Thanx for the offer. I sure hate to see you throw the unit away too.
Certainly you could try the chip. Perhaps I misunderstood, did you say that you tried swapping JUST the mechanism part from the RP unit or the whole mechanism w/pcb? If you did not try the pcb(with the surface mount BA..IC). More than likely it will fix the unit.

[smata67]

Well I could not get myself to throw this nice unit out, so I am in the process of getting the BA5823 chip and plan to go in, replace it, and see what happens.

[smata67]

Unit turns on, welcome screen is displayed, tries to read, no disc come on display. Press open and close, no activity, tries to read again, no disc is displayed. No motor or laser activity during all of this.

The unit is beyond my ability to repair, if you are interested in it, let me know and you can have it for shipping fee. In nice shape cosmetically and has remote. My zip is 22308.

[vtech]

Once you have verified the mechanism to be functional in another unit, it is obviously external to the transport. The BA5832 IS the driver used for both motors --spindle AND travers(laser) drive motors. Like I mentioned earlier, it was number one failure item in that series.
Before getting too involved, it is best to know the basic operational sequence of that unit; Does the unit powers up and stay powered or it shuts down?
Now that you know it is NOT the driver IC, the first thing to check is for the power supply to the BA.. chip. There is a sequence of events within the transport that must be met before the tray will operate;
When powered up, the main micro must see the laser at home position(by means of SW2601-- page 62 of pdf) before there will be any command drive for the spin motor, hence the tray movement.
Try moving the laser from it's home position and then power up the unit; does the laser return to home position?

[Guest]

Disregard above comment. Tracing back TRVS1 and TRVS2 from the motor, it goes through two IC (IC6- N5M4558M-D has measurement values), IC20 (MN103526EGA-looks like main chip, no measurement value), IC23 (SN74LV4053A PWR, has measurement values), IC22 (BA5823FM-E2- has measurement values). By "measurement value" I mean there is a value (dc voltage) on the schematic to check. I found some references on a polish site where BA5823 was identified as bad on a Panasonic SA-HT75. I will check these values against the schematic, though the ICs are probably beyond my ability to replace.

[Guest]

I swapped the drive assemblies between the DVD-S2300MK2 and the Panasonic RP62, and the RP62 works fine, so there was nothing wrong with the one originally installed in the Yamaha. The IC you speak of- BA5823FM-E2- looks like it is the "Actuater Driver" leading to the optical pickup, but I think the problem is the control of the traverse (tray) drive motor, as it does not appear to be getting power at any time.