How To Distinguish The Captive Screw - Sony ZRD-1 Service Manual

4-1-2. How to Distinguish the Captive Screw

Judge whether the screw captivating measure has been taken or not in the display unit by whether the
cylindrical part is provided or not.
Screw captivating measure has not been taken
Screw captivating measure has been taken
4-2 (E)
Rear cover
The cylindrical part is not attached
to the rear cover.
Rear cover
The cylindrical parts are attached
to the twelve screw hole portions
of the rear cover.
Rear cover
When the screw that secures
the cover is loosened, the
screw drops from the cover.
Rear cover
Even though the screw that
secures the cover is loosened,
the screw is retained without
dropping from the cover.
ZRD-1/ZRD-2