Originally Posted by dmi
I studied the case and I found the real problem, That's not the grease (sorry). Here you have my detailed brainstorming:
-The projector turn off when the iris doesn't move.
-If the iris is not jammed in the origin position (open) the projector will not shutdown. Even after 3 hours. Grease problem? hum...???
-When the iris is jammed, the linear motor (it's like an hard disk) vibrates and you can hear that if you turn-off your sound system. After a few secondes the projector protect itself (I dont figure the reason yet) by an automatic shutdown.
-Why the iris stay in open position at the startup?
-I have removed the top cover only to see the iris section.
- With a little screwdriver I played with the iris mechanism (maybe an hour).
- When the iris is in origin position, there is a little bit more friction to begin the rotation. After this startup friction, the mechanism is very smooth to move even in a cold grease condition.
- To test my theory without breaking or over modify the unit, I soldered a copper wire (18 gauge) on the little holed plate on the top. This wire is to stop the iris mechanism before the complet origin position (open). If you are interested I will take a picture of the mod.
Surprise! The projector doesn't go to protect shutdown after the mod. I dont hear no more the vibration of jammed motor.
Great post DMI. Sorry to see that you haven't posted again recently. Would be great to get an update on how this solution worked over a longer period.
I experienced the exact same IRIS failure issue on my AX200U after just 265 hours (3 months) of use. Same symptom of hearing the IRIS motoring and clicking noises, with screen going bright / dim, then projector shutdown. Also, with red IRIS OK in the status menu etc. etc.
This happened every time I powered up, so the projector was unusable. Also, as I had imported after US release (even though before available locally) the local Panasonic office refuses to repair even if I am happy to pay, on the basis that it is a parallel import!
To avoid the cost of return freight back to the US, I thought I would read up this thread. DMI's post caught my eye.
I didn't want to solder anything, or open the unit up (f possible). I noticed that the bottom IRIS pivot is clearly visible from the lamp housing, even with the lamp installed.
So what I did was get a spade lug, and attach a short right angle piece of firm wire (actually cut-off tail from a 1w resistor). Cut to the right length so it creates a stop point but does not interfere with the pivot when the IRIS is fully closed, this creates an easily adjustable stop for the lower IRIS pivot, by simply sliding the spade lug under one of the lamp mounting screws, and tightening the screw when the IRIS pivot is moved just off it's stop point to a more horizontal "full open" position.
I noted that at it's normal stop the IRIS is actually past horizontal (ie. past the full open point), so it did seem logical that perhaps a new stop point that positioned the IRIS flap a more horizontal stop point may assist.
OK, so I powered up the projector, and Woohoo! for the first time in many power-up attempts, the projector operated normally! No clicking, no flashing, and no shutdown!
Note that I did not open the projector, and I have not done anything with grease or WD40 or anything else.
Time will tell of-course, as I have only powered up 3 times with this fix so far, all without the problem re-occurring. But this modification of the stop point that DMI identified, certainly fixed the 100% consistent IRIS power-up failure that I was experiencing, and in my case this was not complicated by any other fix methods being attempted (ie. no grease, lube, or even opening of the projector).
Only other issue, is that I do not know whether the AX200 lamp mounting / IRIS access layout is identical to the AX100 (as I do not have one), so not sure if this 'no-solder' mounting point IRIS stop point fix will also work for the AX100.
If others are interested, I can try and take some photo's of what I have done.