Anyone know if this pro DJ unit has a mode whereby the button
function-sensitive backlighting can be turned off ? I've not seen a Mk3
before, and don't have the manual for it. The one that I've just fixed was
in for a mechanical problem on the deck, which was straightforward enough.
All of the buttons work and do as they should, but none light up when
pressed. The "Vinyl - CDJ" indicators don't light either, although the
central jog display correctly shows "Vinyl" or nothing, when the button is
operated. There's so many different LEDs involved here, that it seems
unlikely that there is any 'fault' as such, and the job ticket doesn't
mention any such problem, so I'm wondering if a soft switch-off function has
been put in, to stop the console looking too 'busy' in the dark, if some DJs
prefer it that way. Or possibly I suppose, if all the LEDs are taken up to
some common supply rail that's just for them, there might be some little
wire ended or sm fuse, as Pioneer are so fond of using in '1000s ?? Anyone
know ?

Arfa

On Tue, 22 Jun 2010 13:47:00 +0100, Arfa Daily �ʇoɹ�:

Anyone know if this pro DJ unit has a mode whereby the button
function-sensitive backlighting can be turned off ? I've not seen a Mk3
before, and don't have the manual for it. The one that I've just fixed
was in for a mechanical problem on the deck, which was straightforward
enough. All of the buttons work and do as they should, but none light up
when pressed. The "Vinyl - CDJ" indicators don't light either, although
the central jog display correctly shows "Vinyl" or nothing, when the
button is operated. There's so many different LEDs involved here, that
it seems unlikely that there is any 'fault' as such, and the job ticket
doesn't mention any such problem, so I'm wondering if a soft switch-off
function has been put in, to stop the console looking too 'busy' in the
dark, if some DJs prefer it that way. Or possibly I suppose, if all the
LEDs are taken up to some common supply rail that's just for them, there
might be some little wire ended or sm fuse, as Pioneer are so fond of
using in '1000s ?? Anyone know ?

With all the lights and commotion in a club where you would find pro dj
equip I would think that some console lights would hardly be a
distraction warranting dimming.

"Meat Plow" wrote in message
news
On Tue, 22 Jun 2010 13:47:00 +0100, Arfa Daily �ʇoɹ�:

Anyone know if this pro DJ unit has a mode whereby the button
function-sensitive backlighting can be turned off ? I've not seen a Mk3
before, and don't have the manual for it. The one that I've just fixed
was in for a mechanical problem on the deck, which was straightforward
enough. All of the buttons work and do as they should, but none light up
when pressed. The "Vinyl - CDJ" indicators don't light either, although
the central jog display correctly shows "Vinyl" or nothing, when the
button is operated. There's so many different LEDs involved here, that
it seems unlikely that there is any 'fault' as such, and the job ticket
doesn't mention any such problem, so I'm wondering if a soft switch-off
function has been put in, to stop the console looking too 'busy' in the
dark, if some DJs prefer it that way. Or possibly I suppose, if all the
LEDs are taken up to some common supply rail that's just for them, there
might be some little wire ended or sm fuse, as Pioneer are so fond of
using in '1000s ?? Anyone know ?

With all the lights and commotion in a club where you would find pro dj
equip I would think that some console lights would hardly be a
distraction warranting dimming.

Yep - quite right. It was in fact a genuine fault. There are many picofuses
on the MJCB board, and one of these feeds 12v out on a rail called "VLED".
Bit of a giveaway, really ...

For future reference for anyone who might be interested, it is IC1513, and
is rated at T315mA. Replacing it restored all the LEDs to normal operation.

My thanks, as ever, to Mark Z, who managed to find a copy of the schematics
for me. Cheers Mark - it was a big help :-)

Arfa

On Tue, 22 Jun 2010 13:47:00 +0100, "Arfa Daily"
put finger to keyboard and composed:

Anyone know if this pro DJ unit has a mode whereby the button
function-sensitive backlighting can be turned off ? I've not seen a Mk3
before, and don't have the manual for it.

I see you have already obtained one, but here is one at eserviceinfo:
http://www.eserviceinfo.com/download...000%20MK3.html

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.