meter
257MC
251MC
245MC
239MC
233MC
227MC
221MC
129MC
123MC
113MC
167MC
101MC
213MC
(4001,Mod.)
85MC
(4001Mod)
181.
185.75MC
211.25MC
215.75MC
83.25MC
87.75MC
the
exceeds this limit
highest
75MC
to
75MC
75MC
to
25MC
response
frequency
to
CHANNEL
channel
13
12
11
10
9
8
7
6
5
4
3
2
13
6
8
13
6
TUNER
8
13
12
11
10
9
8
7
6
6
5
4
3
2
on
8.
scope,
it
will
(channel
ALIGNMENT
CONNECT
SCOPE
Vert. Amp.
q> . Low
chassis
.
Not
used
Vert.
Amp.
<£> . Low
chassis.
Readjust
A40
Vert.
Amp.
<J>
. Low
chassis.
Not
used
Vert. Amp.
<6>
. Low
chassis.
"
Vert. Amp.
<£> . Low
chassis.
as in
steps
be
necessary
13
thru
(Cont).
ADJUST
to
point
A26,A39
A40
side
to
A34
to
point
A43,
A44
side
to
for
response
similar
to
point
side
to
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A45
to
point
side
to
A46
to
point
side
A47
to
A48
"
25 and 29. The dip at
2) and
to
knife
continuing
A49
coils
If
necessary
to
obtain
desired
required adjustment turn
and
switch back
injection
voltage
steps
23 and 24
obtained.
Check
for
response
Check
oscillator
channel
at
point
85%
of
maximum
A26
and A39
curves
within
Set
fine
tuning control
tion.
Adjust
frequency
meter.
Adjust
for
response
Fig.
8.
Check
as
in
step
22.
to
Fig.
8.
Check
for
response curve
Check
oscillator
channel
at
point
85%
on any one
A43
and
A44.
MINIMUM
tilt
colls
(by
expanding
turns)
L39
Adjust
individual channel
for
audible
beat
oscillator
Injection voltage
at
point
<£>
within
( 2
volts
maximum)
limits.
Connect
the
supply
to
ungrounded side
lead
to
chassis.
ungrounded
side
from
tuner
AGC
negative
lead
point
ra> .
Positive
tor
-IS
Volts
maximum
gain.
Indication
on
Reduce
bias
A47
for
maximum
peaks
on
response curve.
Adjust
A48 for
two
peaks
on
by
expanding
RepeatBtepa
point
<^
to -15
and
32.
Then reduce
volts
and
again
Adjust
A49 for
two
peaks
on
mid-point between
L22
thru
L26 and
to the
lowest.
REMARKS
retouch A26,
response(Fig.S).
to
channel
AS
in
step
until
proper
curve
injection
^> . If
markers
on any one
thru
A42 to
proper
limits
to its
A34 for an
audible
curve
oscillator
Readjust
Recheck
thru
to
negative lead
at
to -3
A24
A23 and
Injection
<Q
. If
markers
channel
SLIGHTLY
If
unable
to
on
channels 5 thru 2 knife
or
compressing
L42 and
on
each channel.
verify
that
MINIMUM
Adjust
for -6
of
C76.
Remove
at
point
<fj> . Connect
of a
second
lead
point
^>
Adjust
lor
scope.
volts
at
amplitude between
maximum
response
curve.
or
compressing
33 and
34.
volts. Repeat
bias
repeat
steps
maximum
response
curve
two
peaks
LIT
thru
L20 to
A39 and A40
If A40
off
generators
13 and
check
22.
Repeat
response
is
similar
to
Fig.
voltage
for
each
fall
below
channel retouch
obtain
response
as
in
Fig.
8.
mid-range
posi-
beat
on
similar
to
injection voltage
If
necessary.
similar
to
Fig.
voltage
on
each
fall below
retouch
obtain correct
coil
L47
thru L50.
oscillator
slug
Recheck
on
each channel
the
voltage
and 5. 5
of a
of
bias
to
. Set
MINIMUM
point
amplitude
Increase
at
amplitude between
Is
volts
variable
C76. Positive
volts
at
short
supply
to
chassis.
Adjust
scope
for
4001-
<^> . Adjust
two
between
A48
is
adjusted
coll
turns.
bias
steps
31
point
(K>
to -3
33
and
34
.
on
bias
at
.
8.
8.
F
IG.9
FIG.
F
IG.I2
FIG.13
F
IG.I4
PAGE
7
Turn
the
from
the
center
conductor
a
suitable preamplifier
Fabricate a test
split
gear
stop
pin on the
VHF
marker generator
crystal
Connect
The
sweep
DUMMY
ANTENNA
37
TWO
soon
Carbon
Resistors
38
Tune
39.
thru
to
bend
while
tuning lower
by
touching
quired.
reading
low
or
coupling
outside
oscillator
allowable
Tune
in a
Remove
Connect
Adjust
for -2
Connect a second bias
side
of
DUMMY
ANTENNA
Direct
40
41
42
Direct
43
change over switch
set.
IF and
oscillator
of IF
dial
with
on the
tuner
tuner
should
removal.
Connect
the
synchronized
generator
output
SWEEP
GENERATOR
COUPLING
Across
UHF
terminals
In
the
the RF
Connect
on
high
coll.
this
tube
limits
local
the
the
C76.
Connect
and
lator
terminals.
Connect
ator
modulator
tenna
(See
antenna
with
each
lead.
entire
UHF
plates
in
frequency
the
plates
the DC
VTVM.
Readings between
crystal
Impedance
Connect
range
will
is
replaced
and
In
TV
station
G-Y,R-Y
demodulation
negative
lead
volts
bias
supply
SWEEP
GENERATOR
COUPLING
signal
video sweep modu-
across
antenna
(See
signal
and
video
across
terminals.
remarks-step
to UHF
adjustments
cable
to
chassis
may be
used.
markers scribed
shaft
for
accurate
be
against
thru a lOOOfc
low
side
sweep
voltage
lead
should
SOOn
range
and
to
correct
mlstracklng.
so
with
the
knifing
probe
of
or an
DC
probe
cause
crystal
steps
such
cases,
in
which
of a
variable
at pin 6 of
to the
generator
remark^
gener-
sweep
an-
1)
ALIGNMENT
position.
To
may be
(point
<^>
on
on its
circumference
alignment.
the
stop plate
carbon
resistor
to
chassis.
from
the
sweep
be
terminated
SWEEP
GENERATOR
FREQUENCY
887 . SMC
(Use max.
sweep
473.
(Use max.
sweep
check
that tracking
tool
VTVM
.03 and .4
oscillator
of
VTVM
currents
37 and 38
the
interference
tube
bias
VILA.
ungrounded
SWEEP
GENERATOR
FREQUENCY
SMC
(3MC
width)
SMC
width)
tracking.
while
to
point
to
oscillator
(V25)
supply
Swp)
GENERATOR
FREQUENCY
The
above
noting
<£> . Common
volts
tube outside
point
beyond
should
is
FIRST
from
side
GENERATOR
FREQUENCY
make
the RF
aligned
schematic).
Locate
to
MARKER
41.25MC
43 . SMC
45.75MC
887.
41.
43.
45. 7 SMC
473 . SMC
If the
plates
<£> . Common
repeated,
tube should
noticed,
VIDEO
its
to pin 6 of AGC
of
MARKER
3.0MC
3.58MC
4.
IMC
3.
4.
adjustment
without
at 0, 5 and 164
the "0"
on the
gear assembly
point<J> . Insert
generator
with
its
characteristic impedance,
CHANNEL
83
[164degrees
on
5MC
dial)
25MC
14
SMC
5
degrees
on
dial)
41.25MC
may be
the
point
of
the
effect
should
be
obtained.
its
allowable
allowable
limits
be
adjust
AMPLIFIER
socket
C76.
Connect
CHANNEL
4
CMC
IMC
INSTRUCTIONS
UHF
TUNER
ALIGNMENT
removing
If the
oscilloscope does
degree
to the
tuning
tuning
and
45.75MC
bent
by
knifing
on the
response
to
chassis.
to
chassis.
and in
replaced.
FM
TRAP
A55 for
AND
clamper
the
of the UHF
when
resistor
horizontal
Vert. Amp. (thru
preamp.
to
detector
lead
side
chassis.
using a knife
will
If
limits.
If the
ALIGNMENT
minimum
tube
positive lead
Vert.
band
(detector
3).
chassis.
Vert. Amp.
band
tector
of
minal
Low
Vert. amp.
band
detector (detector
lead
terminal
L87.
chassis
Vert. Amp.
band
2MMF
detector (detector
lead
pin 1 (plate)
R-Y
(V25B) . Low
to
tuner,
UHF
tuner.
Connect a lOCXli
not
degrees.
reference
point
Tune thru
voltages outside
such
BANDPASS
di> . thru detector
Low
Fig.
chassis.
The
point
the
plates
are
lead
(insulate
input
of the
usually
CONNECT
SCOPE
if
needed)
<^>
thru
(detector
of
Fig.
3).
Low
to UHF
tuner
markers
blade
not be
disturbed. A check
curve, then
the
entire
This voltage
Readings between
cases
the
oscillator
interference
AMPLIFIER
(6T8/V11A).
to
chassis.
CONNECT
SCOPE
Amp.
of
wide
scope
to
point
lead
of
side
to
of
wide
scope thru
side
scope thru
of
Low
scope thru
of
demodulated
(detector
3).
To
"B"
of
to
chassis.
ofwide
Fig.
"F"
side
.
capacitor
Fig.
3) to
of
L80.
3) to
of
of
ter-
to
side
de-
lead
wide
the UHF
have a sensitivity
with
fully
fall below
with
knifing
this
may be
oscillator
tube
Connect
Fig.
and
(cont)
tuner
carbon
test dial should
the
capacitor
meshed.
lead)
through
oscilloscope
50
ohms.
ADJUST
A50,
Use
A
51,
output.
A52
built-in
generator
provide
A
coupled
similar
MC
marker.
should
response
A53,
Leave
A
54
step
coincides with
If
repositioning
Repeat
are
85% on any UHF
the
shield
cover
of
which
the
proper
UHF
range,
limit
are
obtained,
varied
.75 and 3.5
tube should
is
replaced
in the
picture.
ALIGNMENT
the
positive
Adjust
for -6
ADJUST
Signal
video
crystal
VTVM
to
lation
(67.25MC)
VTVM
being careful
signal
1st, video
45.75MC
lator
control until a beat
scope.
of
similar
Connect a 330S2, 1 watt
A
56
terminals
coll
supply
(V9B) . Connect negative
bias
Connect
Adjust
Adjust
lar to
terminals
to
transformer
Connect
A57,
At
A58
At
-15
curve
SLIGHT
sponse.
and "F" of
Adjust
A59
In
readjustment
step
Replace
unit
will
have
to be
resistor
from
of 5
millivolts
be
made
to fit
plates
Connect
aperture
for
horizontal
low VHF and UHF
If UHF
marker,
50 and A51 for
marker
be
marker
37.
A53 has
steps
obtained.
removed.
requires
section
at the
by
repositioning
volts should
steps
volts
generator
carrier
accuracy.
to pin 2
point
adjust
and
generator
exactly
Remove
V4A.
(L80).
to pin 9
supply
for -7
A56 for
Fig.
terminals
pin
9 of
junction
volts.
similar
A59 for
step
42, if
14 for a
check
with
move
1500^,100
deflection yoke
of
R8A (B-
over
fully
meshed,
the
high
provided
deflection.
REMARKS
sweep
couple
loosely
to
UHF
marker (887. 5MC).
maximum
response
curve centered
to
Fig.
9.
Adjust
coincides with
The
41.25MC
symmetrically
curve
as in
generators
Adjust
A53
473.
SMC
insufficient
coil
until
37 and 38
channel
Knife
knifing
or
both sections
same
time noting
it
indicates
L3
be
be
replaced.
37 and 38
should
lead
to
chassis,,
at
ungrounded
REMARKS
should provide channel
frequency
Connect
(grid)
<!J2> . With
signal
for 1.5
volts
apply video sweep modulation,
not be
loosely
IF
amplifier tube
marker.
To set the
on
frequency
VHF
The
response
to
Fig.
11.
"A" and "B" of
Connect negative
(grid)
to
junction
positive
terminals
volts
at
correct
12.
Remove
"A" and "B" of L80 and
"C"
and "F" of
(L87)
for
both
bias
supplies
V9B
Increase
of
R168
Adjust
A57 and A58 for
to
Fig.
readjustment
Remove
3300
L87.
response
adjustment
for
desired
check
response
fuse
(MS)
in its
watt
socket
line)
.
removed
the
per
inch,
the
The
side
of a
for
marker
generator
generator
has no
separate
antenna
and
Fig.
until
range
it
will
low B+
obtained. Readings
If the
of
zero
generator
overload.
pattern
generator
on
Remove
of
both
adjustments
and
13.
of A7 for
of the
curves
resistor
marker
terminals
Adjust
amplitude
at
887.
A52
until
the
the
887.
SMC
45.75MC
located
on top of
9.
connected
43.
SMC
marker
marker
as in
adjust A 54
markers
coincides.
until
proper
responses
be
necessary
the
plates
may be
made
if re-
the
voltage,
(UHF
osc.
be
repeated.
(67.25MC)
6CL6
on
resistor
burst
of
response
330J2
R169
from
fuse
and
with
DC
probe
(V7).
Common
video sweep modu-
output
VTVM.
Remove
Couple
to pin 6
(grid)
(V4)
to
provide
local
oscil-
adjust
fine
is
obtained
from
scope should
bias
supplies.
across
bandpass
primary
lead
of a
keyer tube
lead
of a
second
R168
and
R169.
of
both
to
bias
points.
curve
resistor
connect
demodulator
In
as in
step
bias
to -9
increase
response
If
necessary,
desired
terminals
similar
to
required
response,
overall
similar
holder.
from
high
side
Fig.
IF
pin
of A7
to
over-
5MC
43.5
markers
as
In
Fig.
by
4
of
VHF
of
tuning
on
pin
6
be
bias
chassis.
simi-
from
step
42.
41.
volts.
bias
make
re-
"C"
14.
repeat
response
to
Fig.
Re-
7 of
10.
to
5.
PAGE
8
VHP
VHP
UHF
UHF
CPIANNEL
Connect a 100%
Connect
Turn
the
signal.
Adjust
DUMMY
ANTENNA
Direct
"
SELECTOR
FINE
TUNING
SELECTOR
SWITCHOVER
the
negative
channel
Use
ator.
terminals.
saturated
lead
selector
horizontal
SIGNAL
GENERATOR
COUPLING
color
bar
Across
"
"
color
of a 15
to
hold
gener-
antenna
ALIGNMENT
bar
generator
volt
bias
correct
channel
control
of the
SIGNAL
GENERATOR
FREQUENCY
across
supply
(whichever
generator
the
antenna terminals
to
point D „
crystal
unti
CHANNEL
VHP
A/lN
RF
AMP
INSTRUCTIONS
COLOR
AFC
ALIGNMENT
(a TV
the
positive lead
supplied
sync.
to
pin
color
(V21).
chassis.
to
of
picture
side
to
point
chassis.
pin
to
color
with
7
2
<$£>.
Connect
color
DC
(plate)
phase
Common
Vert.
(red
tube.
chassis.
DC
Common
TUNER
that
is in
probe
grid)
probe
was
CONNECT
VTVM
of
detector
to
Amp.
Low
to
signal
to
chassis.
the
generator)
ADJUST
A60,A6l,
A62
A63
R20
UHF
MIXER
(6AF41 feAF4AJ
(cont)
may be
used
if
or
correct
Connect a short
pass
primary
maximum deflection
to
Its
mid-range
deflection. Remove
and
chassis.
Connect a clip
Adjust
A63 for
lead
from
point
Connect
a 10 to
crystal
(M9).
deflection
on
M9
and
adjust
available).
channel
for TV
REMARKS
jumper from
coll
(L80)
to
on
VTVM.
position
short
Then
adjust
lead
from
point
zero
Indication
<M>
and
15MMF
capacitor
Adjust
AFC
VTVM. Remove
the
color
control
DEMODULATOR
terminal
chassis.
and
adjust
from
A62 for
on
chassis.
control
capacitor
,-——N
V24^
6AG7
color
"C"
Adjust
Set the hue
A61 for
terminal
maximum
<$>
to
chassis.
scope.
across
(R20)
(R2)
for
DRIVER
,
G-Y
R-Y
of
band A60 for
control
maximum
"C" of
L80
deflection.
Remove
3 .
58MC
for
zero
from
across
color
sync.
DEMODULATOR
2BH7J
DEMODULATOR
clip
y
n
o*
o
o >
n
*
t:
O»
O
CO
O
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BOTTOM
VIEW
TUBE
PLACEMENT CHART
=
r?v
3-
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w
PAGE
9
VIDEO
IF
SUB-CHASSIS
PRINTED CIRCUIT
PAGE
TO
SOUND
IF
SUB-CHASSIS
PRINTED CIRCUIT
R139)(R138)(R142)(R1
•—
PAGE
18
CHASSIS
BOTTOM
VIEW
RE!
142)
/
RESISTOR IDENT. (R1-R142)
SET 314
FOLDER
9
PAGE
11
PAGE
12
CHASSIS
BOTTOM
VIEW-CAPA
K>
<
1
n
-2
i
CO
10
n
M
F
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o
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O
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:APACITOR
IDENTIFICATION
PAGE
17
PAGE
16
CHASSIS
BOTTOM
VIEW
RE!
O
K
W
Q
-I
O
W
H
CO
CO
CMCQ<M
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CO
5?
W
Q
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CTC4A)
CTC4,
21-CT-661U,
21-CT-66OU,
VICTOR MODELS
RCA
(Ch.
21-CT-664U
-CT-663U,
21
-CT-662U,
1
2
C167
A59
B3
A62 A57 A53
PAGE
14
CHASSIS
TOP
a.
<
O
LU
a.
O
CTC4, CTC4A)
21-CT-66ID,
1-CT-66OU,
2
VICTOR MODELS
RCA
(Ch.
21-CT-664U
21-CT-663U,
21-CT-662U,
-CT-661U,
21
21-CT-66OU,
VICTOR MODELS
RCA
CTC4A)
CTC4,
(Ch.
21-CT-664U
21-CT-663U,
21-CT-662U,
X
u
UJ
U
co
HORIZONTAL
If
picture
control
HORIZONTAL
The
normally will require
If
L76 or
necessary
Short
the
slug
Connect
schematic. Connect
waveform
keep
the
slug
horizontally, continue
point
should
HIGH
Turn
counter
Connect
voltage regulator tube
a
25KV
VTVM.
Remove
milliameter
slug (B2)
and
clockwise until picture appears
drive control (R22) clockwise
of
white
horizontal
Oscillator Alignment".
HIGH
Connect a 0-1MA
(V19). A reading
25KV.
vertical
adjustment a vertical
viewing
AGC
Tune
control (R7B)
with
clockwise
Tune
the
est TV
slightly retouch
signal
MATRIX
Connect a 100% saturated color
signals
controls
switch
with
red
+R-Y
signal
Move
tube
for
zero
grid
retouch A62.
recheck
for
Move
check
adjustments
COMPLETE
Before
Adjustments"
I
NTTIAL
Tune
to
sync
operating normally.
overloading
it
will
"Horizontal
Adjust
OSCILLATOR
the
set on and
tune
in
wt or
(R22)
horizontal
out the
horizontal
back
the low
the
oscilloscope
fully
Momentarily switch
remain
VOLTAGE
the
clockwise positions.
reading.
replace
foldover lines
VOLTAGE
Remove
height
area
AND
in the
the AGC
in
weakest
best
signal
being
across
to the
color
grid
signal
on
the
(pin
of the
zero
the
cancellation
making
in a TV
the
be
the
neariy s ncorrec,
and set the
width
WAVEFORM
waveform
adjustment
no
L77
to
synchronize
horizontal waveshaping coil
in
coil
on
scope appears similar
picture
clockwise,
contrast control
the
probe -end
high
voltage
across
for
minimum
M5
hold
Is
NOISE
strongest
control (R7A)
until
signal
in
received.
ALIGNMENT
to
their mid-range positions. Turn
correct
bar
of the
on the
scope.
vertical
12). Observe
R-Y
signal
picture tube, recheck
Reconnect
for
zero
R-Y
signal
high
until
SET-UP
under
ADJUSTMENTS
station, preferably a test
picture U the
due to
necessary
Sweep
focus
readjustment.
colls
are
replaced
the
hold
slug
all the way out of
until picture
capacity
probe
low
side
in
sync
by
from
point
then
counter clockwise until picture synchronizes
two
full
in
sync.
ADJUSTMENT
and
of
high voltage probe
(V19).
Adjust
the
fuse
(M5)
fuse
terminals.
reading
In
its
holder. Turn
In
the
for
proper
pull-in action
PERFORMANCE
DC
milliameter
of , 7MA
should
millameter
and
vertical linearity controls
overscan
obtained.
INVERTER
signal
to its
maximum counter clockwise
picture
on
screen
TV
signal
noise
ratio
that
area
R7B-
Never
USING
GENERATOR
channel (channel
tube
scope;
amplifier
the
on
scope.
scope
R-Y on
scope.
on
scope.
of
scope
of red
magenta
best
overall
PROCEDURE
picture tube
"Horizontal
If the
mlsadjusted
to
readjust
Circuit
control
(R24)
in
and
Connect
if
horizontal
Adjustments".
to
antenna terminals.
generator).
picture
side
any
a TV
ADJUSTMENT
readjusting
Q>
off
and
In
fully
(pin
of
+B-Y
to
picture
MISCELLANEOUS ADJUSTMENTS
ALIGNMENT
station,
preferably a test
aus e
control switch
is
adjust
in
set, scope
picture.
locks
in
sync.
of an
oscilloscope
of
scope
to
to
Fig.
the
and
chassis.
turns counter clockwise
channel
and
brightness control
Common
to
high
voltage control (R21)
from
its
holder
Adjust
on
milliameter. Remove milliameter
the
contrast
on
picture tube. Turn
as far as
possible
raster.
Recheck
as
CHECK
In
the
cathode circuit
be
obtained
high
voltage probe.
of one
half inch
CONTROL
ADJUSTMENTS
that
area.
clockwise,
shows
no
that
area
and
is
obtained,
check
for
picture overload.
adjust
AGC
100%
SATURATED
bar
generator
Adjust
which
the
vertical
2). Low
necessary,
adjust
scope
to the
signal
on the
Move
the
for
zero
to the
blue
If
necessary,
green grid
and
blue
cancellation
adjustments,
Sweep
Circuit
pattern.
oscillator
will
not
AGC
control
the
controls
for
best
definition.
orzona
for
proper
at the
factory
adjustment
(L77)
with
clip leads
coll.
Rotate horizontal
Remove
shortfrom
to
chassis.
Set the
vertical
point
Adjust
15.
While adjusting
horizontal
hold
Turn
the
horizontal
back
chassis.
the
outlined under "Horizontal
adjust
sign
adjust
then turn back
control
contrast
side
blue grid
B-Y on
grid
of
bars.
is
sync,
from
again,
the
to
their
to the cap of the
Set the
for
and
connect a 0-500MADC
horizontal
and
brightness
the
without
the
operation
of the
when
the
high voltage
Adjust
so
that after
at top and
noise
position.
R7A
of
pulling.
R7B
clockwise until
on the
COLOR
providing
hue and
the
channel
crystal
has
amplifier
to
chassis.
A62 for
zero
of the
scope.
Adjust
amplifier
scope.
of the
picture tube
slightly
picture tube (pin
Repeat matrix
obtained.
check
the
Adjustments".
It
should
and AGC
or
If
the
or
noise inverter control,
as
outlined
pattern.
r
results.
and
will
&> on
Bl
until
slug.
the
picture
maximum
high
meter
25KV
linearity
horizontal
the
presence
of the
6BK4
the
final
bottom
inverter
Starting
counter
to the
If
necessary,
weakest
BAR
IR-Y
and
color
selector
been
supplied
of
scope
Observe
B-Y
picture
A64
back
If
necessary,
retouch
6) and
"High
Voltage
be
possible
systems
picture
under
be
and
turn
hold
L77.
the
Bl
Remove
hold
pull-in
for
on
controls
of
strong-
IB-Y
to red
and
A64
are
is
If
Is
to
the
CHECK
OF
HORIZONTAL
Turn
the
horizontal hold
clockwise.
The
to the
right.
diagonal
the
should
clockwise
wise;
to the
until
clockwise.
channel
above check, refer
CENTERING
Adjust
is
the
bottom
HORIZONTAL
Adjust
overscan
Adjust
Voltage Adjustment".
HEIGHT
Adjust
picture that
should
Recheck
readjust
PRELIMINARY
Connect
terminals.
amplitude
maximum
tilt
and
pattern
converging
horizontal position). Note
then
of
that dot.
In
solid lines indicate
converging magnet
two
Adjust
over blue
the
Complete
indicated
COLOR
Switch
maximum
clockwise.
their
fully
clockwise. Loosen
may
neck
Alternately
two
Is
obtained
yoke
and
brightness
controls
field
picture
effect
antenna
test
center range positions.
Set the
and
turn
Adjust
the
picture.
any
viewing
over
adjustments
tion
Slowly
bars
are
horizontal hold.
now
remain
of the
the
picture
left. Then turn
picture
locks
The
and
back again.
ADJUSTMENT
the
vertical
centered
within
marked
area,
and
each side
WIDTH
the
width
of
approximately 3/4"
the
horizontal drive control
AND
VERTICAL
the
height
is
symmetrical from
overscan
horizontal
the
focus
the RF
Preset
controls (located inside cabinet,
counter clockwise.
controls
to
set
Fig.
beams other than
center
purity magnet
adjust
green
blue
color
Is
their center range
channel
on
picture tube
magnets,
adjust magnet corresponding
16 the
dashed lines indicate
the
three magnets
gun
next
of the
convergence should
by a
white
PURITY
channel selector
counter clockwise. Turn
Set the six
maximum counter clockwise positions.
clockwise
and the
be
moved
back
of
tube
if
necessary
slide
with
assembly. Rotate
all
three (red,
white
for
proper view
equalizing
pattern.
the
the
assembly
tube screen.
near
the
edges
terminals
Adjust
contrast control
screen
contrast
the
brightness" control
and
green background controls
Adjust
cast.
Rotate
range.
The
brightness controls
of the
achieved.
OSCILLATOR
(located
picture
should
be out of
turn
the
obtained,
horizontal
should
in
picture should
the
adjust
switch
and
the
control
CONVERGENCE
output
selector
is
to
screen.
ADJUSTMENTS
the
tabs
minimum
raster.
and
controls
control clockwise
the
background
horizontal
with
The
picture should
in
sync
for
approximately three
hold-
now be out of
the
horizontal
sync,
then
now
If
the
to
and
and
the
the
dot
the two
and
Adjustment
proper
receiver
"Horizontal
horizontal centering controls until
picture
tube
the
positioning
of
picture.
AND
HORIZONTAL
(rear
panel
on
LINEARITY
vertical
linearity controls (front panel)
picture mask
vertical
(R24)
of a
white
red, green,
Preset
switch
from
the dot
(small magnets
which
direction
adjusted.
Each
the one it is
and the
picture
tube
be
with
no
to an
unused
magnets
on the
blue
and
wing
forth.
Slide
to
provide yoke clearence.
yoke assembly forward
(or
rotate
color contamination
the
blue
blue
and
If
necessary, readjust contrast
of
raster.
for the
of the
screen.
tune
In a
black
the
blue
and
Set the
fully
counter
to
obtain a high level grey
for a
screen
the
brightness control over
picture
on the
viewing
and
ALIGNMENT
on
front
control
panel)
fully
sync
with
hold
slight additional clockwise rotation
Turn
turn
Sweep Circuit Adjustments".
by one
centering
for
ADJUSTMENT
dot
position.
to
correct
of
to
of dot
blue beam positioning magnet (located
socket)
obtained
color fringing
green
nuts
and
best
of the
green background controls
brightness control
screen controls
clockwise
fall
in
sync.
the
horizontal
sync
with
hold
two
lock
mask.
of H. V.
each
(R22)
top to
best
generator
and
generator.
mounted
these three dots
that
the
magnet
intended
channel. Turn
the
holding
purity
entire assembly)
green
green)
Adjust
overall
Remove
and
clockwise.
to
observe
dark picture
control,
screen
range.
multiple
back counter clockwise
full
turns additional counter
in
sync while switching
failed
to
If the
picture
for
equal blank
DRIVE
compartment)
side.
as
outlined
ADJUSTMENTS
bottom. Final
half
inch
of the
picture.
overall
picture
across
blue horizontal
accessible
the
red, green,
Turn
channel
Adjust
on a
color
to
direction
of dot
movement
has a
to
control.
to
produce a white
at the
center
around
brightness
field
equalizing assembly
Set the red
screen
controls
yoke assembly
magnet
or
back
of the red
screen
screen
controls
the six
white field
magnets will have
the dot
white
picture, preferably
Adjust
the
on the
for a
uniform
if
necessary,
should
be
If
necessary
lock
ADJUSTMENTS
at top and
dot
correct
controls clockwise
magnets
fully
picture
until
counter
multiple
bars
slanting
until
1 to 3
The
picture
additional
turns
hold
fully
clock-
bars
sloping
off
in
sync
by the
the
picture
does
not
cover
areas
at top and
for an
under "High
for a
adjustment
bottom.
If
necessary,
definition.
the
antenna
and
vertical
by
removing top)
and
blue vertical
generator
receive
the
three
nut
the
movement
the
associated
effect
of the
its
edge.
screen
fully
counter
so
adjust
red
field.
for
and
on the
over
the
clockwise.
the
red, blue,
screen.
on the
screen.
black
and
to
eliminate
brightness
and
repeat
this
condi-
on
a dot
in
a
positioning,
position
on the
dot
near
screen
control
to
control
yoke
toward
the
purity
Tighten
alow
brightness
the
entire
most
to
their
Then
screen.
Adjust
white
white
to
knurled
require
when
slight
contrast
control maximum
assembly
and
until
generator from
its
black
The
of
a
PAGE
2O
MISCELLANEOUS
ADJUSTMENTS (cont.)
VERTICAL
Recheck
of
magnet
a
Connect
terminals.
only
the red
red
Adjust
and
of
grid
of
controls
displaced.
magnets
convergence
Remove
the
blue
until
yellow
Adjust
magnet
of
convergence.
DYNAMIC
"Preliminary Convergence
the
three converging magnets
to
produce a white
white
dot
the RF
Adjust
to a
vertical
vertical amplitude control maximum
vertical
(near
the
center
the
green vertical
adjust
the
the
green dots opposite
(pin
12) of the
(terminals
are
chassis.)
for
Adjust
mounted
readjust
green
a
single vertical
clip lead
blue
vertical
vertical
the
displacement
dots
the
blue
to
converge vertically
should
be one
the
screen.
CONVERGENCE
output
of a
for
white
row of
dots near
control
for
of the
screen)
amplitude
picture
to
the
green
vertical
the
green
on a
knurled
green
and red
vertical tilt
row of
(yellow)
from
blue
amplitude
and
blue vertical
of the
vertical line.
row of
necessary,
dot
white
maximum displacement
the
tube
ground
control
FOR
generator).
tilt
green vertical tilt control
provided
Adjust
straight
of the
and red
tilt
in a
beam positioning magnet
single
If
ADJUST
ADJUSTMENTS
Adjustment"
and the
blue
near
dot
dots
on
from
red.
to
chassis
and red
rows
and red
nut
vertical
dots
grid
of
amplitude
blue dots
on the row of
dots
(white)
repeat
beam
the
center
generator
screen
of
the
center
the
cyan dots.
control
maximum
for
maximum displacement
Connect a clip lead
thru a lOOKU
blue, green,
vertical
of the
green
convergence magnets (small
In a horizontal position)
rows
and
amplitude
from
top to
picture tube
maximum
controls alternately
Is
uniform
and the
vertically
above
adjustment
EQUAL PEAKS
for
correct
setting
positioning
of the
screen
(using
across
antenna
picture tube.
of the
clockwise.
and red
amplitude
and red
of
bottom
and
clockwise . Adjust
with
blue convergence
yellow
screen.
Adjust
of the red
clockwise
from
resistor
grids
and
dots equally
dots.
If
controls
of
chassis.
respect
dots. There
.from
top to
of
vertical
Refer
Adjust
dots
the
at
for
necessary,
to
produce
screen.
Adjust
bottom,
the
blue
rear
tilt
the
to the
HORIZONTAL
Connect
Use a horizontal
Adjust
Adjust
ward displacement
amplitude
blue
Connect a clip
lOOKn
the
green horizontal
ment
a
horizontal
Remove
blue
and
placement
Adjust
gence
screen.
near center
picture
Adjust
magnet
tally
vertical
over
if
necessary,
Convergence Adjustments" until maximum convergence
Video
High
High
resistors
Brightness
Brightness
oak
Channel
instruments
Channel
instruments
Fine
On-off-volume
Instruments
On-off-volume
oak
Tone,
Models 21CT661U,
Models
Models 21CT661U,
Models