RCA Victor CTC9A Installation instructions

PHOTO FACT* Folder
J750-
«•*:
wif/l ClRCUIIRACE*
RCA VICTOR CHASSIS
CTC9A, B,F,H,N,P
DISASSEMBLY INSTRUCTIONS
SAFETYGLASS REMOVAL
1. Remove trim channels atthetopand bottom ofthe safety
glass by pryingoutward starting atthe extreme ends.
2. Slide the retaining bars now exposed tothe right byin-
serting a small bladed screwdriver inthe slots near the
middle of bars.
3. Tilt safety glass outand remove.
CHASSIS REMOVAL 210CK855
1. Remove 10 push-ontype knobs from side of cabinet.
2. Remove 4 screws and3 clips holding rear cover. Remove
rear cover.
3. Remove speaker leads, HV lead, yoke leads, picturetube
socket and convergence board plug.
4. Remove 2 chassis bolts frombottom of chassis, 1 from top
and 1 wood screw from top rear of chassis.
5. Remove chassis.
MODEL 210CK855(Ch. CTC9A)
TRADE NAME RCA VictorMODELS
CHASSIS
210CK855, 210CK856, 210CK857, 210CT822CTC9A
210CK855U, 210CK856U, 210CK857U, 210CT822U CTC9B
210CK885, 210CK886, 210CK889, 210CK905, 210CK906, 210CK907, 210CK920,
210CK924, 210CK935, 210CK936, 210CT835, 210CT836, 210CT837CTC9F
210CK885U, 210CK886U, 210CK889U, 210CK905U, 210CK906U, 210CK907U,
210CK920U, 210CK924U, 21CK935U, 21CK936U, 210CT835U, 210CT836U, 210CT837U .. CTC9H
210CKR940, 210CKH946, 210CTR845, 210CTR847 CTC9N
210CKR940U, 210CKR946U CTC9P
210CKR940, U, 210CKR946, U, 210CTR845, 210CTR847 .. (Remote Transmitter) CRK3A
(Remote Receiver) CTP7A
MANUFACTURER Radio Corporation of America, RCA Victor Tele. Div., Camden 8, N.J.
TYPE SET Color Television Receiver
TUBES VHF Twenty-four, UHF Twenty-five
POWER SUPPLY 110-120 Volts AC,60 CycleRATING 275 Watts, 3 Amp. @ 117 Volts AC
Z8
-o £2
V)
HOWARD W. SAMS A CO., INC.Indianapolis e, Indiana
The listing ofany availablereplacement part herein does
not constitute inany case a recommendation,warranty or
guaranty by Howard W. Sams & Co., Inc., astothe quality
and suitability of suchreplacement part. The numbers of
these parts havebeencompiled from informationfurnished
to Howard W. Sams & Co., Inc., bythe manufacturers of
JB539
the particular type of replacement part listed. Repro-
duction or use,without express permission, of editorial or
pictorial content, inany manner, is prohibited. No patent
liability is assumed with respect totheuseofthe Informa-
tioncontained herein. © 1959Howard W. Sams & Co., Inc.,
Indianapolis 6, Indiana. Printed in U.S. of America
bo
*».
cn
DATE 10-59
SET 459 FOLDER 1

SOUND IF
®A 6EA8
AUDIO DET
®6DT6
TUNER KRK48D,75C,75D(VHF). Zl
TUNER KRK49D,76C,76D
(VHFwilh UHF provisions) TZ
TUNER KRK66M, AA, AB (UHF).. 25
REMOTE CONTROL 26
^DENOTES CHASSISGROUND
• MEASURED FROM CATHODE
• MEASUREDFROM140VSOURCE
.NUMBERS ASSIGNED TO COILS,SWITCHES,PLUGS,SOCKETS, AND
TRANSFORMERS ARETO FACILITATE CIRCUIT TRACING OR COM-
PONENT REPLACEMENT ANDMAYNOT NECESSARILY BE FOUND ON
THE UNIT.
ALL WAVEFORMS EXCEPT CO!
WITS BLACK AND WHITE TEST
CONTROLS SETTO PRODUCE 4(
lOLOR CIRCUITWAVEFORMSTAKENWITH WIDE
>SC1LLOSCOPE WITH ALL CONTROLS
ETTO PRODUCE PROPER PRESENT:
ATURATED COLOR-BAR GENERATOR CONSISTING OF RED,
•ELLOW, GREEN,CYAN,BLUE, MAGENTA, AND WHITE.
2. Pin numbers ore c
A PHOTOFACT STANDARD NOTATION SCHEMATIC
with H^^^^E
° Howard W. Sami & Co., Inc. 1959
PAGE 2

HORIZ BLANKING AMP
(g) @A6CG7
L28 TERMINAL GUIDE

HORIZ BLANKING AMP
1U6CG7
g»5SI»5»ZW 38SV 4-BACKGROUND
1 ;OOK
RCA VICTORCHASSIS
CTC9A, B,F, H, N,P

RCA VICTORCHASSIS
CTC9A, B,F,H,N,P
FOLDER 1
WVHDVia HDO19

ALIGNMENT INSTRUCTIONS
PRE-ALIGNMENT INSTRUCTIONS
The High Voltage lead should be securely taped and keptawayfrom the chassis.
Allow a 20 minutewarm-upperiod forthe receiver and test equipment.
Suggested Alignment Tools: GENERALCEMENT #8606, 8606L, 8282,9295
WALSCO #2526, 2543, 2544, 2545
VIDEO IF ALIGNMENT
Connect the negative lead ofa 6 volt bias supply to point <X> . Positive to chassis.
Connect the negative lead ofa 15 volt bias supply to point <E> • Positive to chassis.
Connect the negative lead ofa 7 volt bias supply to point <g> . Positive to chassis.
Connect the negative lead ofa 7 volt bias supply topin2 (grid) ofthe Horizontal BlankingAmp. Positive to chassis.
Connect a clip lead frompoint <E> to chassis. Preset Sound Reject(R26) at75% clockwise rotation. Preset SoundAdjust(R27) at50% rotation.
Video IF shield must bein place during alignment.
DUMMY
ANTENNA
Direct
ii
„
..
"
SIGNAL
GENERATOR
COUPLING
High side to ungrounded
tube shield floating over
Mixer-Osc. (V202).
Low side to chassis.
..
"
"
"
SIGNAL
GENERATOR
FREQUENCY
43.8MC
(Unmod)
42. SMC
45.75MC
44.0MC
41. 25MC
47.25MC
41. 25MC
CHANNEL
4
"
..
"
"
"
"
"
CONNECT
VTVM
DC probethru 10 K to
point \fy . Common
to chassis. Use nega-
tive scale.
"
"
"
"
DC pr*e thru 10K to
point <£> . Common to
chassis.
ADJUST
Al
A2
A3
A4
Mixer
Plate Coil
A5.R26
A6, R27
A7
REMARKS
Adjust for maximum deflection. Use peakwith cere
nearest printed board endof coil. MaintainVTVM
reading of1.5 volts by adjusting signal generator output.
"
"
Adjust for maximum deflection withpeak attopend
of coil.
Adjust A5and SoundReject(R26) simultaneously
for MINIMUM deflection withslugawayfrom chassis.
Reduce bias at point <^> if necessary for sufficient
indication.
Adjust for MINIMUMdeflectionwith slug awayfrom
chassis.
Increase bias at point <S> to -6 volts. Adjust A7 lor
MINIMUM deflectionwith slug awayfrom chassis.
OVERALLVIDEO IF RESPONSECHECK
9.
10.
11.
12.
13.
14.
Connect bias as under "Video IF Alignment":
Connect a . OOlmfd capacitor in series with a 180SJ resistor from pin5 (Plate) ofthe2nd Video IF Amp. to chassis with the resistor next to chassis.
Connect a lOOOmmf capacitor across the scope leads.
The Video IF shield must bein place during alignment.
Connect theDC probe ofthe VTVM to point <g> . Common to chassis. (Use negative scale).
Use 10MCsweep unless otherwise noted.
DUMMY
ANTENNA
Direct
"
Fig. 4
SWEEP
GENERATOR
COUPLING
High side to ungrounded
tube shield floating over
Mixer-Osc. (V202). Low
side to chassis.
"
Across VHF antennater-
minals thrumatching
network (Fig. 4).
SWEEP
GENERATOR
FREQUENCY
45MC
"
All VHF
Channels
separately
MARKER
GENERATOR
FREQUENCY
42.17MC
45.75MC
41.25MC
47.25MC
41.65MC
42.17MC
42.75MC
45.0MC
45.75MC
41.25MC
42.17MC
CHANNEL
4
"
AllVHF
Channels
separately
CONNECT
SCOPE
Vert. Amp.thru de-
modulatorprobe(Fig
1) topin5 (plate) of
1st Video IF. Low
side to chassis.
"
Vert. Amp. thru 10K
to point <g> . Low
side to chassis.
'•
"
ADJUST
REMARKS
Set sweepoutput for.1 volt peak to peak on
scope. Retouch Mixer Plate Coil andA4for
maximum gain and symmetry of response
similar to Fig. 2. Reduce the bias to-4
volts at point <§> if necessary.
Reduce bias at point <Q> to zero. Retouch
A7 to place marker in trap notch asin Fig. 2.
Retouch A6andR27to place marker in trap
notch asin Fig. 2. Remove capacitor and
resistor loadfrom 2nd Video IF. Increase
bias at point <§> to-6 volts.
Use 3 volts peak to peak onthe scope. Re-
:ouch Al,A2andA3for response similar to
Fig. 3 with markers as shown. Al controls
the tilt, A2 affects 42. 17MC side of curve
and A3 affects the45. 75MC side. Connect
a. OOlmfd capacitor frompoint <§> to chassis
Retouch A5andR26to place marker in trap
notch if necessary. Remove . OOlmfd.
Decrease bias at point <^> to-3 volts.
SLIGHTLY retouch Al, A2andA3to correct
orany overall tilt that is approximately the
same onall channels. Repeat step 13.
PAGE 4

ALIGNMENT INSTRUCTIONS (cont)
SOUND IF ALIGNMENT
Connect the negativelead ofa 10 volt bias supply to point <g> . Positive to chassis. _
In the following steps the signal level maybe reduced by disconnecting the lead from the terminal at point <6> and connecting a Imeg potentiometer from
point <K> to chassis. The lead is then connected tothe center armofthe control.This armis then used to control the level ofthe signal applied to
the Sound IF strip. Start alignment with the control turned to maximum signal.
DUMMY
ANTENNA
. OOlmfd
"
SIGNAL
GENERATOR
COUPLING
High side to point <$> .
Low side to chassis.
"
SIGNAL
GENERATOR
FREQUENCY
4. SMC
(4000, FM
Mod. 15 KC
swp)
"
CHANNEL
Any non-
interfering
channel
"
CONNECT
VTVM
DC probe thru diode
probe (Fig. 5)topin 1
(grid) of Audio Det.
Common to chassis.
USE SCOPE
Acrossvoice coil
ADJUST
A8
A9, A10
All
REMARKS
Connect a jumper from pin7 (grid) of Audio Det. to
chassis. Adjust for maximumdeflection. Set generator
for 1 volt on VTVM. Use peak with slug nearest topof
coilform.
Adjust for maximum deflection. Set generator for1 volt
on VTVM. Remove VTVM, diodeprobe and jumper.
Starting with slug fully counterclockwise, adjust toa
peak. Continue turning clockwise until a second peak
is reached and adjust for maximum at this secondpeak.
Decrease signal untildetectorbreaks outof lock asin-
dicated by jagged portions ofthe sine wave on scope.
Retouch A9for symmetricalbreakout similar to Fig. 6.
15.
16.
ALTERNATE SOUND IF ALIGNMENT USING FM GENERATOR
Connect the negativelead ofa 10 volt bias supply to point <§> . Positive to chassis.
DUMMY
ANTENNA
. OOlmfd
"
SIGNAL
GENERATOR
COUPLING
High side to point <$> .
Low side to chassis.
SIGNAL
GENERATOR
FREQUENCY
4. SMC
(Unmod)
"
CHANNEL
Any non-
interfering
channel
"
CONNECT
VTVM
DC probe thru diode
probe (Ffg. 5)topin1
(grid) ofthe Audio Det.
Common to chassis.
Connect scope across
speaker voice coil.
ADJUST
AS
A9, A10
REMARKS
Connect a jumper from pin7 (grid 3)of Audio Det. to
chassis. Adjust A8for maximumdeflection on VTVM.
Use peak- with slug nearest topof coilform.
Adjust for maximumdeflection. Set generator output
for 1 volt on VTVM. Peak with maximumcore separ-
ation.Repeat steps 15and16.
Remove the diodeprobe and jumper. Turn offthe signalgenerator and tune inthe strongest signal inthe area. Set Volumecontrol for
normal volume. SetAllso thatcore Is flush with thetopof coil form.Observescope and listen to sound. Change bias at point <$> to zero.
Adjust All clockwise to peak.Continue clockwise toa louder peak , and adjust for maximumoutput at this secondpeak. Gradually decrease
the signal until sound becomes distorted. Maintaindistortedsignal and adjust A9for maximumoutput.
16.
4. SMC TRAP ALIGNMENT
:« TO
tn
DUMMY
ANTENNA
. OOlmfd
SIGNAL
GENERATOR
COUPLING
High side to point <^ .
Low side to chassis.
SIGNAL
GENERATOR
FREQUENCY
4. SMC
(4001, AM)
CHANNEL
Any non-
interfering
channel
CONNECT
VTVM
USE SCOPE
Vert.Amp.thru de-
modulator probe to
pin 6 (plate) of1st
Chroma Bandpass Amp. .
Low side to chassis.
ADJUST
A12
REMARKS
Adjust for MINIMUM 4001, indication on scope.
18.
CHROMA BANDPASS ALIGNMENT
19.
20,
21.
22.
The followingalignment will require theuseofanRCARF Modulator (WG-304A) or similar device.
Connect the negativelead ofa 7 volt bias supply to point <^> . Positive to chassis.
Connect a cliplead from point <£> to chassis.
Turn ColorControl fully clockwise.
DUMMY
ANTENNA
.Imfd
Direct
SWEEP
GENERATOR
COUPLING
High side topin2 (grid)
of 1st Chroma Bandpass
Amp. Low side to
chassis.
SWEEP
GENERATOR
FREQUENCY
3.58MC
(3-5MC
Sweep)
MARKER
GENERATOR
FREQUENCY
3.08MC
4.08MC
CHANNEL
Any non-
interferin|
channel
CONNECT
SCOPE
Vert. Amp.thru
demodulator probe
(Fig. 7)topin7 (grid)
of "X" Demodulator.
Low side to chassis.
ADJUST
A13,
A14
REMARKS
Adjust for response similar to Fig. 8 with
equal markerheight.
Turn Brightness,Contrast, and NoiseControls fully counterclockwise. Connect a 330S2 Resistor anda 4mJd Capacitor in series from plate
(pin 6)of1st ChromaBandpassAmp. to chassis.
High side of sweep gen-
erator to Video Sweep
Input ofRF Modulator.
High side of signal gen-
erator to Picture Carrier
Input ofRF Modulator.
Output ofRF Modulator
across antenna terminals
SMC
(6MC Swp.)
Set signal
generator
to unused
channel
3.08MC
4.08MC
Unused
Channel
Vert.Amp.thru
demodulator probe
(Fig. 7)topin7 (grid)
of "X" Demodulator.
Low side to chassis.
A15
Remove cliplead between point <^> and
chassis. Adjust for response similar to
Fig. 9. Peak with core nearest chassis
end of coilform.
Disconnect the 330SJ Resistor andthe 4mfd
Capacitor from V17. Check for response
similar to Fig. 10.If necessary, retouch
A13, A14, & A15 to obtain desired response.
o
5
SET 459 FOLDER 1
PAGE 5

MISCELLANEOUS ADJUSTMENTS
HORIZONTAL SWEEP CIRCUIT ADJUSTMENTS
SuggestedAlignment Tools:
B3, B4 GENERAL CEMENT#8606,8606L,8282, 9295
WALSCO #2526, 2543, 2544, 2545
Connect a 0-500MA meter in series with the cathodecircuit ofthe Hori-
zontal Output tube.Connect a . 47mfd capacitor across the meter termi-
nals. Connect a 0-1MAmeter in series with the cathode circuit ofthe HV
Regulator by removing the test jumper and connecting the meter inits
place.Connect the high side ofthe scopethru a low capacityprobe to
point <§> . Low side to chassis. Connect theDC probe ofthe VTVM thru
a high voltageprobe tothe High VoltageRectifier"cup".Common to
chassis.
Setthe Focuscontrol fully counterclockwise. Setthe High Voltage Adjust
at two-thirdsclockwiserotation. Tune the receiver toa station signal
and synchronize the picture. Adjust the Horizontal Waveform slug (B3)
for waveform similar to Fig.11 with the round and sharppeaks at equal
amplitudes. Keep the picture in syncduring this adjustment with the
HorizontalHold. -
Adjust the HorizontalLinearityslug(B4) for MINIMUM currentindication
on the 500MA meter.
Adjust the High Voltage Adjust for23. 5KV onthe VTVM. Check the cur-
rentreading onthe meter. It should not exceed . 8MA(19 watts).
AGC ADJUSTMENT
Tune inthe strongest signal inthe area. Connect the high side ofa scope
to point <£> . Low side to chassis. Adjust theAGC control for10 volts
peak to peak onthe scope.
NOISE INVERTER ADJUSTMENT
Connect the Vertical amplifier ofthe scope to point <£> . Low side to
chassis. Turn the Noisecontrol fully counterclockwise.Turnslowly
clockwise whileobserving the scope, when the tips ofthe syncpulses ap-
pear tobe clipped,back off until the clipping just disappears.
COLOR AFC ALIGNMENT
Connect the Verticalamplifier ofthe scope to point <@> . Low side to
chassis. Connect theDC probe ofthe VTVM thru a 470K resistor topin
2 (plate) of Chroma Sync Phase Detector. Common to chassis. Setthe
Tint control tothe center ofits range. Turn the Killer Threshold control
fully counterclockwise. Connect a short clipfrompoint <^y to chassis.
Adjust A16 for maximumdeflection onthe VTVM. Ifthe ChromaReference
Oscillator isnot running, no readingwill be obtained. In which case ad-
just AlS.just enough to start the oscillator and then adjust A16. Adjust A17
for maximumdeflection onthe VTVM. Make sure the oscillator is running
and locked in.
Connect a clip leadfrompoint <@> to chassis. Disconnect the VTVM. Ad-
just A18 until the Color bars stand sUU onthe screen or drift slowly by.
Move the scopeconnection to point<^ .
Remove the cliplead from point <§> . Observe thebar pattern onthe
scope and retouch A17 if necessary to obtainproperresponsecurve simi-
lartoR-Yin Fig. 12 withequalchange when rotating the Tintcontrolfrom
one endtothe other.
After this adjustment return the Tintcontrol the nominalsetting. Move
the scope connection to point <g> . If necessary, retouch A16 for proper
B-Y signal as shown in Fig. 12.
Move scopeconnection to point <(§> . Check for proper G-Y signal andre-
peat adjustment of A17, A16 if necessary.
Remove all clip leads and test equipment.Switch toan unused channel and
adjust the KillerThresholdcontrol tothe point where color justdisappears
from the noisepattern onthe screen.
PRELIMINARY CONVERGENCE ADJUSTMENTS
Connect the output ofa white dot generator tothe antenna terminals. Pre-
setall Red,Green and BlueHorizontal and Vertical Convergence controls
and coils tothe center of theirranges.
Adjust Red,Green and BlueConvergencemagnets andthe Lateral Magnet
to produce a white dotinthe center ofthe screen. Keep the screen in
sharp focus duringthis adjustment. Switch the generator to standby posi-
tion.
COLOR PURITY ADJUSTMENTS
If necessary,demagetizepicturetube and associated components.
Setthered tabs ofthe Purity Magnet together. Setthe Edge Purity Mag-
nets so that thetwo magnets areinthe same relative position one above
the other.Loosen the yoke clamp and slide the deflection yoke tothe rear
as faras possible^
Shunt test points ^y and <£J>to chassis thruindividual100K resistors.
Slide PurityMagnet aroundthe neck ofthe picturetube andatthe same
timespread thered tabsapart to produce a uniform red screen area at
the center ofthe screen.
Move the Yoke forward and adjust for best overall red screen without neck
shadow.
Adjust so that any colorimpuritiesoccur atthe extreme edges ofthe
screen.
Adjust the Screen controls fora white raster and adjust the Edge Purity
Magnets for best edgepurity.Maximumcorrection is obtained with the
open ends ofthe magnets 180 degrees apart. Rotatebothmagnets simul-
taneously to achieve the desired results.
VERTICAL CONVERGENCE ADJUSTMENTS
Recheck the "Preliminary ConvergenceAdjustments" for correct setting
of the Red,Green and Bluemagnets andthe Lateral Magnet to produce a
white dotinthe center ofthe screen.
Loosen thetwo screws holding the Convergence board, slide the board to
the left and remove. Fasten the board tothetop rail ofthe cabinetwith
the two screws provided. Place so that the controls faceforward.
Switch thedot generator to vertical bars and adjust theRedand Green tilt
controls for equaldisplacement ofthe Center baratthetopand bottom.
Adjust theRedand GreenAmplitudecontrolsuntil theredand green lines
are straight. Graduallyreduce the Amplitudes to converge the red,green
and bluealong the center lines, retouching theRedand Green Tilt controls
to keep the lines parallel. The centerlineshouldconverge to produce a
white linefrom topto bottom or show slight displacement oftheRedonone
side andthe green onthe other with all three parallel from topto bottom.
Readjust the ConvergenceMagnets If necessary to superimpose the three
parallel lines to produce a singlewhitelinefrom topto bottom.
Switch the generator to horizontal bars. Referring tothetopand bottom
bars asa reference,adjust the Blue Vertical Tilt and Amplitude controls
for equal downward displacement ofthe bluehorizontal from the extreme
top and bottom lines ofthe raster. Reduce the Blue Vertical Amplitude
control to converge all the lines at the center, retouching the Blue Vertical
tilt SLIGHTLY, if necessary making all lines white atthe centerfrom top
to bottom.
HORIZONTAL CONVERGENCE ADJUSTMENTS
Switch the generator to Crosshatchpattern. If necessary,retouchcon-
vergencemagnets to producegoodconvergence atthe center ofthe screen.
Adjust coil B-l so that the bluehorizontalline atthe rightcenter ofthe
screen isa straight line.
Adjust control B-2fora straight blueline tothe left ofthe raster. Ad-
just R-G-1 to make the vertical lines atthe right side ofthe raster con-
verge. Adjust R-G-2 to make the horizontal redand green lines atthe
right side ofthe screen converge.Readjust B-lto make the blue lines
at the right centerfall ontheredand greenconverged lines.
Retouch R-G-1 for convergence ofthe vertical lines atthe right side.
Adjust control R-G-3 to make the vertical lines atthe left side con-
verge.
Adjust control R-G-4 to make theredand greenhorizontal lines atthe
left side ofthe screen converge.
Readjust B-2to make the blue lines atthe left centerfall onthe converged
redand green lines.
The picture or patternshould now show properconvergenceover theen-
tire screen.
GRAY SCALE ADJUSTMENTS
Set Green and BlueScreen controls two-thirds clockwisefromminimum.
Set the Green and BlueBackground controls tothe center of their ranges.
SettheRed Backgroundcontrol fully counterclockwise anddonot change
it from this point on. Tune ina station and then turn the Brightness and
Contrastcontrols fully counterclockwise. Usea program which displays
the full range of contrast conditionsfrom high lights tolow lights.
Advance the Brightnesscontrol to obtain a picture of normalbrightness.
The control willusuallyfallapproximately two-thirds clockwise. DONOT
overload.
Adjust the Blue and GreenBackground controls to producewhite inthe
highlight areas ofthe picture.
Reduce the Brightness to produce a low level brightness picture and ob-
serve the lowlight areas (darkobjects) ofthe picture.Some color will
prevail inthe lowlight areas, as indicatedbelow.
1. Yellow inthe lowlight areas. BlueScreenmust be turned
clockwise.
2. Magenta inthe lowlight areas. GreenScreenmust be turned
clockwise.
3.Redinthe lowlight areas. Blue and GreenScreensmust be
turned clockwise.
4. Green inthe lowlight areas. Green screen must be turned
counterclockwise.
5. Blue inthe lowlight areas. Blue Screenmust be turnedcoun-
terclockwise.
6. Cyan inthe lowlight areas. Blue and GreenScreensmust be
turned counterclockwise.
Depending upon which ofthe aboveconditionsprevail,turn the appro-
priate control inthe indicateddirectionuntil a graypicture is obtained,
then SLIGHTLYbeyond inthe same direction.
Advance the Brightnesscontrol to produce a well lit picture. Adjust the
Blue and GreenBackground controlsforwhite inthe highlight areas of
the picture. DONOT ADJUST THERED BACKGROUND CONTROL. Re-
turn the Brightnesscontrol tothe lowlight area and retouch the proper
Screencontrols for gray inthe lowlight areas.
Check for propertracking atall light levels and retouch as necessary
being sure notto change Red Backgroundcontrolsetting.
PAGE 6

ALIGNMENT INSTRUCTIONS(cont)
820^ BALANCED OUTPUT
1300
47o I 47o
•/W-
FOR 3000 BALANCED INPUT
1NB4A
INPUT
FIG. 5
SET TWO MARKERS AT
EQUAL HEIGHT
F IG.8
i NPUT ''i nfcJA i ^^rn " SC°PE
INHUT 2400mmf J> 1N34A I I2K
>82K
~[4 470m mf
F IG.6
FIG. 7
SET MARKERS
AT EQUALHEIGHT
FIG.9
ADJUST FOR EQUALPEAKS
F IG.IO
I -^ vj« •) * n > O
j_ i?=i""j"m"i"
SET 459 FOLDER 1
==£
O
5
m
PAGE 7