Maintenance; Cleaning The Video Heads; Cleaning The Viewfinder - Sony MSW-970 Operation Manual

8-2 Maintenance

8-2-1 Cleaning the Video Heads

To clean the video heads, use a Sony BCT-D12CL
Cleaning Cassette. Follow the instructions given with the
cleaning cassette, as incorrect or excessive use could
damage the video heads.
To clean the heads, perform the following:
Load the cleaning cassette according to the procedure
described in "Loading a cassette" (page 34).
The tape runs automatically in PLAY mode for about 3
seconds to clean the head.
After the tape runs, the cleaning cassette is automatically
ejected.
Note
Do not run the cleaning cassette 5 or more times
consecutively.

8-2-2 Cleaning the Viewfinder

Use a dust blower to clean the CRT screen and mirror
inside the viewfinder barrel.
Clean the lens and protecting filter with a commercially
available lens cleaner.
Caution
Never use organic solvents such as thinner.
Disassembling the eyepiece for cleaning
Viewfinder Eyecup
Protecting
barrel holder
filter
1
Detach the eyepiece from the viewfinder barrel.
For the detaching procedure, see "7-2-4 Detaching the
Eyepiece" on page 118.
1
4 2
Eyecup
Packing
ring
3
2
Remove the eyecup from the eyecup holder.
3
Remove the protecting filter, together with the packing
ring, from inside the eyecup holder.
4
Detach the protecting filter from the packing ring.
Fog-proof filter
Depending on the temperature and humidity, the protecting
filter may mist because of vapor or your breath. To ensure
that the viewfinder is always clear, replace the protecting
filter with a fog-proof filter (Part No. 1-547-341-11, not
supplied).
Fitting the fog-proof filter
Replace the protecting filter on the packing ring with the
fog-proof filter.
Be sure to correctly assemble the fog-proof filter, the
packing ring, and the eyecup so that the reassembled
eyepiece is waterproof.
Note
When cleaning the fog-proof filter, wipe it very gently with
a soft cloth to avoid damaging the anti-fogging coating.
133
Maintenance