While looking through the viewfinder I noted a lot of dust … it was between the viewfinder window and the prism (like the Olympus OM-2 that I worked on).
Ok, now we need to get the top plate off … so we start from the front.
First push up AT dial guard, this will reveal the screw that holds to the body.
Remove screw and then remove slide, watch as the two plastic pieces may fall apart.
Underneath is a ball bearing. Carefully put that aside.
Unscrew the metal plate, then finally the plastic cover under it.
Now remove lens mount front cover. There are four screws – one on each side, one top, and one bottom … pull off.
Note the buttons on side they might … and in my case also watch out for moths. There happen to be a dead one under this cover.
This will reveal the two hidden screws that hold the top on.
Now get to the back.
the viewfinder cover in the middle is glued on, pull off, remove screw, then remove switch lever.
Now we can start to get the top off
Unscrew the rewind lever , wrap a little tape, before popping off the e-ring you might want to make deflection wall around it when the ring springs off into infinity. Then you can remove the dial and washer underneath.
Use a rubber grip to remove the ring surrounding the shutter release button. Remove the shutter button, av/tv selector dial, and washer … do not invert camera.
Remove the winding advance cap, copper washer, spring washer, plastic washer, lever, cam
There again is another spring clip, metal washer, selector switch, and finally the multi exposure switch.
Put some isopropal alchohol on indicator light … then pop off the outer housing pull off
The top cover … screws two side, two front, two back … wiggle and slide off, note the wire going to the PC socket.
The viewfinder is held on both sides … two screws … pull out rear finder window.
Clean up the top plate before putting it back on … something I should have mentioned some time ago.