Author
|
Topic: What this pulley is for (ST-1200)?
|
Winbert Hutahaean
Film God
Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003
|
posted January 02, 2008 11:49 PM
Hi guys,
I have a big problem last night when using my ST-1200.
Suddenly the motor stopped and when I opened the case, I saw there were two pulleys sitting side by side, One belt snapped from the right pulley as picture below:
The motor stopped becuase the remain of broken belt was trapeed inside the rotor. I pulled out the ermain and turned on the projector.
Amazingly, the projector run again. But I believed there was an important role taken by this second pulley, so I turn off the projector again.
1. So can you guys tell me what is the main purpose of the second pulley, why the projector could run without being belted?
2. Secondly, though the projector run, but it was too noisy, sounded that the rotor touching a metal or somekind like that. Do you think if I installed a repalcement belt the noise would also go?
3. Can you also tell me where is the place to do speed adjustment (on Sankyo 800 I could see two small buttons representing 18 and 24 fps, but I didn't see inside the ST1200)
please help me guys,
-------------------- Winbert
| IP: Logged
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Winbert Hutahaean
Film God
Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003
|
posted January 06, 2008 09:43 PM
Kev,
Mine is M & O model (if that what you are looking for).
Now, with limited resources here in Indonesia, I did what I could do to fix my projector.
I took the power glue (hard glue) and re-joined the broken belt. After leaving it to dry-up for 1 night, I put it back to the pulley....and voila!....it's running again.
And the noise used to come with one pulley belted was also gone. So, it was indeed with one belt the motor could run but they worked so hard and that's why the noise came.
Now my question, I have 2 identical ST-1200s, when I opened the second one to see what was inside the projector, I found that it has square belt while my broken one is round one.
So, can you guys tell me the different function or whatever it was, why the shape of the belt is different?
cheers,
-------------------- Winbert
| IP: Logged
|
|
|
|