electronics, repairs, service manuals and datasheets discussion community for the repairs professionals and technicians
FAQSearchMembersGroupsRegisterProfilePM'sLogin/Out
Pioneer 5-disc DVD player drawer fault
Goto page 1, 2  Next
 
Post new topic   Reply to topic    Electronic equipment repair and service manual search discussion Forum Index -> Equipment Repairs
View previous topic :: View next topic  
Author Message
Graeme



Joined: 05 Nov 2007
Posts: 10

PostPosted: Wed Dec 12, 2007 2:06 am    Post subject: Pioneer 5-disc DVD player drawer fault Reply with quote

Hi.

Pioneer 5-disc DVD changer, model # XV-HTD1

Plays discs fine, but drawer won't stay open.
If you press the OPEN/CLOSE button, the disc unloads fine, and the drawer ejects fine, but as soon as it is fully open, it closes immediately again.

You can keep this going continuously, by pressing the OPEN/CLOSE button, so I don't think this is a controller fault, more likely the open/close sensor switch.

Would anyone here agree, or like to suggest another likely cause?

I don't want to pull the deck to bits to get to the open/close switch/sensor unless someone else agrees with me, as this takes time, and if I am not on the right track, it's a waste of time...

Thanks.
Smile
Back to top
View user's profile Send private message
vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Wed Dec 12, 2007 5:37 am    Post subject: Reply with quote

Typical problem with the tray switch that is mounted on the bottom of the tray

It was used on several models. Also sometimes it is the actuall solder joints from the switch to the connecting board. You can use a spray cleaner to clean it

---very easy... also known as one of the "gravy fix's"
Back to top
View user's profile Send private message
Guest






PostPosted: Thu Dec 13, 2007 2:56 am    Post subject: Reply with quote

Great.
Thanks for the confirmation.
Smile

I'll get to work on it now...

Re: Switch, yeah, I have not been able to find another one - it's an odd looking thing with a blue lever on it.

My trade suppliers do not stock it, and think if it can't be fixed with contact cleaner, I would have to order one in from Pioneer overseas...
Back to top
vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Thu Dec 13, 2007 3:40 am    Post subject: Reply with quote

Was it the switch or the connections where it is soldered? Ought to look very close. In years of dealing with them, hardly ever had to replace one.

Always had good luck with Cramoline (or any other cleaner). Just working it back & forth would always cleared the tarnished contacts.

The particular blue handled switch (made by Alps) is actually an obsolete piece and even if it was available, would probably be just as oxidized due to exposure/age.
Back to top
View user's profile Send private message
Graeme



Joined: 05 Nov 2007
Posts: 10

PostPosted: Mon Dec 17, 2007 12:40 am    Post subject: Reply with quote

Actually have not been able to get to the switch - yet.
It is BURIED inside and inbetween about a ton of plastic.
Sad

I have the deck out, but the only way to get to this switch, is to remove the whole drawer assembly, which I am reluctant to do, as if you mess up the gear-timing, it will take HOURS to re-align the correct timing - I don't have a service manual for this unit.

At this stage, I have marked a couple of gears for correct alignment, and am preparing to disassemble the drawer mech, but I really don't want to.

There are two of these little blue-lever switches - one you can get at easily, it is just in front of the laser assembly and it's associated disc spindle motor.

This one is labeled "CLAMP SW", if that helps...
Seems to me, to be the switch telling the logic board when any disc is loaded and ready to spin-up.

The other blue-lever switch, is below this, and to the left, buried under the actual drawer itself.

I have tried simply turning the drawer motor(with cables disconnected from the logic board!), so that the drawer opens, but you cannot access this switch with the drawer open or closed. It would seem to make things difficult, you have to physically remove the drawer from it's associated gears and motor drive, in order to get at the open/close switch at all.

Have you(or anyone else reading this) seen this kind of "buried switch" before, or are they normally easier then that to get to?
(I would have thought so...)
Back to top
View user's profile Send private message
Graeme



Joined: 05 Nov 2007
Posts: 10

PostPosted: Mon Dec 17, 2007 1:01 am    Post subject: Reply with quote

OK, with drawer fully open, I was able to get the tube from the can of "Contact Cleaner" in there, and give the switch a good squirt.
I have moved the switch back and forth, with a long, thin screwdriver.

I have re-wet the solder contacts.
Managed to do that without melting any plastic.
Razz

This switch is labeled: "POS SW 1", which I assume means drawer position switch, or open/close switch, and DEFINITELY is pushed when the tray is fully open, so I think I am dealing to the correct one.

I have squirted the other(easy to get at) lever switch too.

I will reassemble, and see what happens.
Back to top
View user's profile Send private message
vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Mon Dec 17, 2007 2:17 am    Post subject: Reply with quote

Ok First, thumbs up to your determination in getting to the switch Smile

Yes the switch in question is under the tray & appears to be impossible to get at.

Eventhough you may have already managed it, it is an easy process if/when
you know how;

NO need to disassemble/mark any gears or worry about any timing whatsoever(hope it's not too late).

All you have to do is to release the tray from it's rails. the trick is to get to the two plastic tabs that limit the outward travel of the tray.Tabs are actually made on to the rail ends, BUT can be accessed thru two cutaway slots from the top of the tray.

1) pulll the tray all the way out 2) rotate the spinning portion just enough to expose the two small opening slots on the front edge . The two tabs can now be spread out just enough to allow the tray to pull out & up away from the rails. to reinstall is to reverse the procedure.
Back to top
View user's profile Send private message
Graeme



Joined: 05 Nov 2007
Posts: 10

PostPosted: Mon Dec 17, 2007 2:50 am    Post subject: Reply with quote

Hi.
Smile

Thanks for your help, btw - many people read forums, but don't post replies, so thanks.
Smile

Yes, I spotted those clips, but was a little paranoid about relative gear/teeth positioning.

In VCR service(which I also do), correct alignment is VITAL.
A good example being the mode-switch, and it's installation position, relative to the deck state - put it in one or two teeth out of alignment...
Most VCR's have alignment marks though.

Sorry, I digress...

I kind of carried that knowledge over to this DVD drawer...

Perhaps I was being over cautious, but better that I thought, then to rush the job, and totally muck it up!!!
Razz

It's all back together on the bench now, and has been playing discs for the last hour or so. I have ejected the drawer several times, and it stays out now, until commanded to go back in.
Smile

Hopefully, and based on your comments, the contact cleaner should have fixed this. I could not locate a new switch here anyway, so looks like this is the best way to fix it.
Back to top
View user's profile Send private message
vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Mon Dec 17, 2007 3:07 am    Post subject: Reply with quote

Should be ok.

Good idea about being cautious on timing /gear tooth etc.

For your info, for this particular procedure, you will not have to do worry about any timing issue. Specifically designed to be independent from gear timing in this case.
Back to top
View user's profile Send private message
Graeme



Joined: 05 Nov 2007
Posts: 10

PostPosted: Mon Dec 17, 2007 3:22 am    Post subject: Reply with quote

Thanks.
I have printed this thread, for future reference.
I note your comments about gear timing with respect to this fault.
Smile
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Electronic equipment repair and service manual search discussion Forum Index -> Equipment Repairs All times are GMT
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  
You can post new topics in this forum
You can reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Електроника София - Service Manuals Free Download - Prikachi - Service Diagrams

Free TV Schematics Download - HARDW.net - Pinout Master - Jabse Search - Jabse.InK  - Pulsator

Connector Pinout Forum - Новини - SnimkiOt.com - безплатен DNS - Whois разузнаване - Poblizo.com : пътешествия