TM 11-6720-239-35
NOTE
The Albator is controlled by the movable
Value Table
image aperture plate, which in turn, is
a. General. If, in the course of testing the base
controlled by three adjusting screws.
block assembly, an electronic component is found
The top outside adjusting screw moves
to be defective or in need of change for shutter
the Albator line up and to the right (in)
speed calibration, the following color should be
or down and to the left (out). The bot-
strictly adhered to. The value of the resistors and
tom outside adjusting screw moves the
capacitors listed is dependent upon the color code
Albator line up (in) or down (out). The
dot painted on the photocell (V1).
inside adjusting screw moves the Alba-
b. Color Code Table.
tor to the left (in) or right (out).
PHOTOCONDUCTIVE CELL
(VI)-
c. Using the three adjusting screws, position
Values in kilo-ohms
the Albator so that it appears square when the
finder assembly is level. Shellac the movable
Color
Range
image aperture plate and adjusting screws in Po-
Blue
15.11-17.2
sition.
Black
13.20-15.10
Red
11.50-13.19
d. To make a topside adjustment, proceed as
Yellow
10.00-11.49
follows :
Green
8.70- 9.99
(1) Set the finder on a flat surface and sight
White
7.60- 8.69
Orange
6.60- 7.59
on an object 1 mile away.
(2) Loosen the turret assembly locking
RESISTORS-Values in ohms 10%
screw.
Color
RR2
R4
R5
R6
R7
R8
(3) Tighten the turret assembly adjusting
Blue
10K
1800
68K
120
3300
120K
screw located on the underside of the turret as-
56K
10K
Black
1500
100
3300
120K
sembly.
47K
Red
10K
1200
91
2700
100K
Yellow
10K
1200
47K
82
2200
82K
(4) To lower the movable image, tighten the
Green
1000
39K
10K
68
2200
82K
two Allen screws on the underside of the turret
White
10K
33K
62
820
1800
68K
assembly.
Orange
27K
10K
51
680
1500
56K
(5) To raise the movable image, loosen the
CAPACITORS-Values in Microfarads
same two Allen screws.
(6) Adjust the position of the movable image
Color
C1
C2 & C3
C4
Max.
Min.
Min.
Max
Min.
Max.
in the eyelens until it is aligned with the fixed
.191
Blue
.220
2.03
2.33
14.0
16.0
image. If the images will not superimpose, set
Black
.220
.252
2.33
2.68
16.0
18.5
them as close as possible and proceed with step 7.
Red
.252
.290
2.68
3.07
18.5
21.2
Yellow
.290
.332
3.07
3.53
21.2
(7) Tighten turret assembly locking screw
24.3
Green
.332
.382
3.53
4.05
24.3
27.9
and apply shellac to the two Allen screws and
White
.382
4.05
.440
4.65
27.9
32.1
turret assembly adjusting screw on the underside
Orange
.440
4.65
.504
5.34
32.1
36.9
of the turret assembly.
(8) Secure the movable image lens in the tur-
ret assembly with shellac.
Assembly
(9) If further adjustment is required, use the
Preliminary adjustments must be made before the
top left-hand image adjusting screw. Turn the
range finder/viewfinder assembly is mounted on
screw in to raise the image, and out to lower the
the camera. The final adjustments (para. 3-23)
image.
are made after the range finder/viewfinder assem-
bly is mounted on the camera.
e. To make a range adjustment, proceed as fol-
lows :
a. Place the rangefinder/viewfinder assembly on
(1) Set the finder assembly on a flat surface
a flat surface at eye level.
and sight on an object located about a mile away.
b. Sight through the eyelens and check that the
(2) Adjust the movable image by turning the
Albator (the yellow dotted line used to frame the
locking screw at the rear of the turret assembly.
image) is parallel to the image seen through the
When the image is approximately correct, shellac
eyelens.
the screw in place.
