Cadillac 54-6219 1954 Shop Manual page 403

16-E-48
AUTRONIC EYE
control is turned completely counterclockwise,
rotate intensity rheostat counterclockwise until
headlamps switch to upper beam. If the meter
pointer is within the "HOLD" sensitivity adjust
ment bar, the amplifier unit is within tolerance.
7. Again check "HOLD" sensitivity adjustment
by rotating Intensity rheostat clockwise
to
end of
adjustment.
8. Turn selector switch
to
'DIM" position mo
mentarily to switch headlamps to lower beam; then
turn selector switch to "HOLD" position.
NOTE: Be sure to use correct "HOLD" posi
tion for clear or tinted windshields.
9. Turn intensity rheostat counterclockwise
carefully and slowly just to the point where the
headlamps switch to the upper beam. The meter
pointer should fall within the "HOLD" sensitivity
adjustment bar on meter scale, if adjustment
was made correctly.
10. Turn off headlamps.
11. Disconnect Autronic Eye tester from cigar
lighter.
12, Remove two oval head screws from bottom
of phototube unit.
13. Lift off cover, remove test lamp and replace
14. Replace cover and screws.
4 Minor Service Corrections
On Car
CAUTION:
Fleadlamps should be turned "off"
before any connections are tightened, made, or
broken. The battery ground strap must be dis
connected before removing or tightening the
phototube unit. The Autronic Eye develops 1,000
volts.
1. Check
to
see that all external connections
are tight and properly made. Be sure to inspect
plug-in connections of phototube unit under the
instrument panel.
2. Turn on the headlamps and feel the amplifier
for vthrator buzz. If vibrator does not buzz
-
a. Be sure vibrator is firmly seated in socket.
b. Replace vibrator with new 12 volt vibrator.
DO NOT USE RADIO 6 OR 12 VOLT TYPE VIB
RATOR.
3. Inspect tube filaments for glowing, except
the amplifier large tube and phototube. Check
or replace one tube at a time in amplifier with
known good tube. If tube is replaced, dimming
sensitivity must be rechecked.
5 Trouble Diagnosis Units on Car
NOTE: The following series of tests should
be made to isolate the trouble to one of the
four major components of the Autronic Eye
before removing any of the units from the car.
a. Units Outside of Electronic Circuits
Disconnect blue feed wire in amplifier from
multiple plug. The headlamps should switch be
tween upper and lower beams by operating the
standard foot dimmer switch. If not, trouble is
in:
1. Power relay
2. Standard foot dimmer switch.
3. Amplifier unit harness from standard dimmer
switch to power relay in either the light blue or
yellow wires, Fig. 16E-S.
b. Amplifier Unit 150 volt section Test
1. Replace blue wire and disconnect the photo-
tube unit and auxiliary foot switch from the ampli
fier unit. Headlamp should be on upper beam in
"automatic" position of the standard foot dimmer
switch.
2. If above test is satisfactory, connect a 2
megohm resistor between black wire and natural
wire in the amplifier unit harness, Fig. I6E-8.
Phototube Unit
alue
Yellow
Power Relay
Ton
Standard
Foot Dimmer
Switch
Yellow
Tan
Fig. 16-E-B Wiring Circuit