GE 4PE350A3 Instructions Manual page 48

EBI-6351
COLOR CAMERA
can flow when inductive collector loads,
exhibiting low resistance paths, are part of
the
associated circuitry. Where current
limiting is not a part of the external cir-
cuitry, disconnect supply power whenever
the base is open -circuited.
Blower Motor Oiling
The Color Camera utilizes a single muf-
fin blower located at the top of the Camera
front plate. To insure longer life and more
efficient operation from this blower, use the
following lubrication procedures.
Oil
the motor at least once every six
months. An oil injector and a can of lubricant
to
be used specifically for this purpose
are furnished with it.
1. Remove the cap from the end of the oil
injector.
2. Place the needle in the center (at a
45 degree angle to the surface) of the gold
label
of
the fan and the concealed self-
sealing rubber cap located under it.
3. Pierce the rubber cap to approximately
inch.
4. Depress the oil injector plunger to allow
one graduation of oil to escape.
Viewfinder Tube Replacement
Refer to Figs. 3, 4, and 5.
Use the following procedures in the event
it
is necessary to replace the viewfinder
picture tube.
1. Open the right-hand Camera door.
2. Turn the Camera POWER switch off.
3. Open the left-hand and rear Camera
doors. The top cover may be opened also
for better accessibility.
4. Disconnect the three coaxial connectors
located at the left end of the CHROMINANCE
VIDEO amplifier board. The connector caps
are red, blue, and green.
5. Unscrew the five captive screws holding
the CHROMINANCE VIDEO amplifier board
and carefully disconnect the board from the
connector.
6. Unfasten the three screws holding the
blank back-up panel which the amplifiers
were resting against, and remove the panel.
34
7. Disconnect the tube socket from the
tube cap.
8. Free the yoke by unscrewing the yoke
clamp.
9. Disconnect the
anode cap from the
picture tube.
10. Unscrew the outer set of four corner
Phillips -head screws which hold the view-
finder dress panel.
11. Remove the entire viewfinder panel,
which includes the viewfinder picture tube.
Provide adequate support while handling so
that the tube assembly, especially the neck,
is not dropped or bumped. Withdraw the unit
carefully.
12. The unit may now be placed on a bench
or similar surface.
13. If
necessary, loosen the four inner
Phillips -head corner screws on the view-
finder dress panel. These screws hold the
corner brackets.
14. Disconnect the four retaining springs
at each corner of the retaining collar,
15. Carefully remove the picture tube from
the dress plate and mask.
16. Follow the aforementioned procedures
in reverse order to install a new picture
tube.
NOTE
During the installation of a new
picture tube, be certain that it is
properly positioned in relation to
the yoke. You may be required to
further
loosen the yoke
clamp
screws holding the yoke and to
move the picture tube into the cor-
rect position. Tighten the yoke clamp
screw.
Care and Cleaning of Optical
Components
GENERAL
It is extremely important that the follow-
ing suggestions and methods for cleaning
the optical
surfaces
associated with the
Camera be followed. These cleaning pro-
cedures have been proven by lens manu-