Admiral CA101 Manuale

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Admirol lNSTAILAT|ONand

SERVICE

NOTES

for ADAPTER-CONVERTER

CAl0l

This Addpler-Converler is designed for instollotion only in the'21-series

chassisindicoted in the toble below.

TheseService Noles qre intended for inslollqtion or servic-e

1nen,

ond con-

tqin inslqllqtion qnd service inslruclions, o portiol schemotic ond c ports list

for the Admirql Adopler-Gonverler CAlOl.

Use ihis Service Dqtq together wilh lhe Inslqllqtion qnd Service Notes

(included with the receiver) or with ServiceMonuol No. 5336 or 5362 for lhe

2l serieschqssis.

GENERAL

Adapter-Converter CAl0l has been designed

{or use

only in the 2l-series chassis

listed below. These chassis

use a conventional AGC cbcuit.

Adapter-Converter CA102 is available {or use in

2l-serieschassis

nhich use a sateil AGC circuit. These

chassishavehigher run numbersthan thoselisted below.

Adapter-ConverterCAl02 is alsousedin all 2lMl and

21Ni chassis.

Installing the Adapter-Converter

in a receiver'will

adapt

the sweepcircuits

to operateat the new line anrl

field ratesrequired

{or receiving

color signals

in black

Insroll Adltpter-Converlel CAIOt only i chosis wirh

Run numbers lisred below. Note lhcl first produclion

Ghdssiswere 'ot stdmped wirh d ntn number.

2181 chassis

starnpedRun l0 or lower

2lC1 chassis-all chassis

2lDl chassis all chassis]

See

"Inportant"

note

2lEl chassis-all chxssisJ

underheadinghelow.

21E1 chassis

stampedRun 1

21Gl chassis

stampedRun 1

21Hl chassisstamped

Run 1

2lJl. chassisstamped

Run 5 or lower

2lK1 chassisstamped

Run L

21Ll chassis

stamped

Run I

2lPl chassis

stampedRun 1

21Q1chassisstamped

Run I

and white or in color if a color wheelis used.

The installation oI the Adapter-Converter

provides the

receiver

wilh additional rear panelcontrols {or color sig-

nals and a color changeswitch. This makes

it possibleto

change {rom "Standard Black and White" pjctures to

"Black and White from Color" or "Color" pictures,

simply operatingthe color changeswitch at the rear of

the chassis. With this switch in the "Standarcl Black-

White" position the receiver operates

on standard black

and white signals.

With the "Color Chanee" switch in the "Black-White

{rom Color" position, black and white pictures are pro-

duced lrom color signals. The picture may be slightly

narrower than lor standaril black and white reception.

With the"Color Change"

switchin the "Color" posi-

tion- color oictures will be receivedi{ a color wheel is

used. For viewing through the color wheel, the picture

is reducedto approximately one-halfthe size of the pic-

ture s€reen.A proper sizecolor wheelis required.

For receptiono{ standardblack and white signals,the

original

rearpanelpictureadjustmentsareused.For the

receptionof color signalsin either black and white or irt

colo;. a seDaratesetoI controls are used. Thesecontrols

are locatedon the Adapter-Convertersub-chassisand on

the

"Color ControlPan;I". The "ColorControl

Panel"is

rviredto the Adapter-Converterand mountsto the rear of

the televisionchassis.The threecontrolson this panelare

"I1eight, Vertical Linearity and Vertical Hold".

ADAPTER.CONVERTER

INSTATTING

THE

I^4PORIANT: When installing lhe Addpter-Converter in s 2lDl or 2lEl chassis, order a Verlical Lin-

earity control, 3,OOOohms, wire wound, port number 75A13-18 dnd d resisror,6S0 ohms,

I wrrtt' prrr! number 60814'581.

INSTRUCTIONS given in each step below. Note the

difierences

in wiring the Adapter-Converterto the 21I)l

or 21E1 chassisas comparedto other 2l-series chassis.

Step l. Remove and discard the following parts

from the TY chaseie. Refer to figure l.

Note that the call-oute'ola, lb, lc' etc."

in figure I indicate the location of parts

to be removed. (II required,the circuit lo-

cationso{ C41S (C4) and R32B (R9) men-

tioneil below can be found in figure 9, or in

figure

10{or 2lDl or 2lEl chassis.)

a. Remove

condenser

C431,.l m{d (paper).

b. Remove

condenser

C41g 330 mmfd. (mica)'

c. RemoveresistorR328, 22,000 ohms, /1 watt;

ornit

thisstep

in 21D1 or 21El chassis.

d. Remove the trimmer screw Irom the Horiz.

Drive trimmer at the rear of the TV chassis.

The Adapter-Converter

is a completely

wired and pre-

tested

sub-chassis

includingthecolor controlparrel.The

sub-chassis

rnounts

in the undersideoi thetelevisionchas-

sisrvith the shaft oJthe "Color Change"switch extending

through the rear of the chassis. The "Color Control

Panelt'mounts

attherearoI thetelevisionchassis.

Installation ol the Adapter-Converter sub-chassis

simple.No special

toolsaierequiredotherthanan elec-

tric-or handdrill, soldering

iron, screwdriver,

pliersand

side cutters. Reler to the partial schematic

figure 9- or

figure l0 {or 21Dl and 2lEl chassis,and to figures

thiu 6. Note that colnponents with symbol numbers

lowerthan"25" (on the

partialschernatic)are

contained

in the Adapter-Converter

sub-chassis.

IIVIPORTANT:

Be{ore installingl be sure that the receiver is operating

normally to avoid diltrculLylater.

To install the Adapter-Converter

carefully Jollow ALL

Prinled in U.s.A.

8-ll-51 Forrn No. 4IA9-21

FE0

GFEEN

ALUE

OFANGE

wHlrE 4j

Srep 2.

Figure 4. Adopler-Conveyler Sub-

.hos!i5 dnd Color Conlrol Pdnel,

showing Lo.qrion of wiring ro be

Connecred in Srep 4.

Figure L Bortom viey, of TV Chcasis

Betore Insrclling Adcprer-

Converter. Showing L.tcotion of Ports to be Renoved or Dis-

.onnecred in SrePs

I cnd 2.

Replace Lhe Lrirnner screw a{ter inserting a g.

mica washer betrveen the nretal washer and the

trinmer plale. The rnica washer is lor insula-

ting thc metalwasherlrom the trirnmer

plate. h.

DiEconnecl (unsolder or clip) the {ollow.

ing connectionE. Re{er to figure l. Note

that the call-outs "2a, 2h, 2c, etc." in

fierure I indicate the location of wires or i.

pirts to lrc disconnectetl. Tnhe locations

are given in figure 8. (I{ required, the cir-

cuit locationso{ the components

mentioned

belowcan

befoundin figure

9,or in 6gurc

10 i.

lor'2lDI or 2lEl chassis.)

Disconnoctthe hot side o{ condenser

C311.

(.047

mid, paper) at thetie poirt. Ornitthis

stepin 2ID1 or 21El chassis.

Disconnect

grounding Iead (usually Lrlack)

{rom witlth control

L402 at chassis

gSounding

lus.

Disconnectthe groundingleadlrom Horizon-

talDrivetrirnrrerC423

anclfrornrcsistotR437

(1 megohm).

Disconnectthe

grounded

endo{ resistor

R438.

(i3,200

thns) lrom thetie

point. For support.

twist the disconnectedend o{ resistor

arouncl

an adjoining

unusedtjepoint,if availahle.

At resistorR406(1 megohmor 680,000ohms)

clisconnectthe

lead iusuall,v

red) n'hichcomes

from heightcontrolR408. Reroute

thisleadto

thc vicirritrioJ tube socket

V40l (6SN7l lor

ease

in conrleclineilater.

At electrolyticcondenserC407A (lUO m{d)

disconneclthe lead (usuallygray or nhite)

which oomes

{rom the centerlerrninal of Ver-

ticalLinearitycontrolR410. Reroutethis

lead

to the viciniry ol tube socketV401 (6SN7)

for easein connectinglater.

At the lead (usually

recl) on Hor. Lock coil

L401. disconnectone end o{ mica condenser

C418 (.0039

mfd).

At pin I oftubesocketV401A(6SN7)vertical

oscillator

tube disoonnectole end of resistor

R448(150,000

ohms)or R404

(1.2

megohms)

which ever happensto be connectedto pin 1.

Perform this stepin 2lD1 and 2lE1 chassi-"

only: At the tie lug in the chassisdisconrrect

the red lead {rorr pin 10 oi V306 (picture)

tube socket.

Performthis stepin 21D1 and 21E1 cbassis

only:Remove

the

Vert.

Lin. controlR4,

ii3.000

ohms) and resistorR5 (620 ohrnsl lrom the

ColorControl

panel

of the Adapter-Corrverter.

ReplacetheVert.Lin. conrrolR4 rvitha 3,000

ohm wire wound type, (part number75813-

18) and replaceR5 rvith a 680 ohm, I watt.

resistor(part nurrber 60814-681)

Figure 2, Ba.k View oI Iv chdssis,

Showing Lo.drions of Holes

tor Mounring Addprer-converter EUb-(hd5siscnd

Color Conrrol Pdnel.

Figure 3. Side view of Tv Chossis,Showins Lo.orion! oI Holes

for Mounring Ad6pter-converter iub-.hqs5is.

tq rx, ffllf P/tlllltJ.

"t',-,

,*,L

u"*-ili,

i',lllllill,

tigure 5. Color Chonse

Swirch Se.rions, Showing

lo.arions of conne.rions

mode in Step 4. figure 5.

Instclled, Bofom View of lV Chossis with Adcller-Converrer

Showing Lo.arions ot Connedions mdde in Step 4.

Step 3. Mount tbe ,Adapter-Converter

sub'chassis

aa follows. See Figures 2, 3, 6, 7 anrl 8,

a. Retnove

Lhenrounting

nuts from the Height

Control (R403) and the Vert. Lin. Control

(R410) on the TV chassis. Mount ihe escut-

cheonplate for the color switch over the con-

trol sha{ts antl replace the rnounting nuts.

llsing theescutcheon

plateasa template,

drill

a I/2" hole at point "X" and two 1/4" holes

at poinl.

"Y': scefrgure

2 \"te: Il thc

sel i- a T\ onll model.

theholes

al points

"Y" canbe omitted. The waferover

the rec-

tangular

cut-out

(to therig}t) canberenroved

and

theHoriz.

HoldanclHoriz.

Drive

trimmcrs

canl-readjustetl

through thehole.

b. Llsing

a nunber 30 drill, rnakea hole il the

side

of thechassisat point"Z"; see6gure3

c. Usinga hal{ inch roundfile.frlea hal{ round

cuL-out

in thechassis

atpoint

"R"; seefigure

d. Lsing thetwo screwssupplied,

nount thesub-

chassis.tlse Lhehole at point "Z'" and an un"

used

holein the chassis;

seefigure

e. Nlourtthecolor

control

paneltotherearofthe

chassisusing the tn'o Poner translorrneL

nounting scre$,s.

With a nunrber30 drill^ drill

ahole

in thechassis

point"S"; seefigure

Ilse theremaining

mounting

lug on the color

control panel as a template {or drillirrg hole.

Dressthcwiring {rom colorcontrol

panel

into

cut'out

in tbechassis

belol'Lhepanel.

{. PlaceLhecolor slvitch

knob onthe control shaft

of the color change

sl'itch so that the pointer

corresponds

l'ith the switch settings and thc

markings

onthe

escutcheol

Plate.

Step 4. MaLe

the follorling (uiring) conneelionq.

- ]lefer to figures

4.5 and 6. Note

thatcall'

outs "4a, 4b, 4c, etc." in figuree 4, 5 and

. 6, indicate conneclion points' Tube loca'

tione are given in figure 8. (If required"

the circuit locations o{ the componentsmen-

tioned below can be {ound in figure 9, or in

figure 10 Jor 21Dl or 21El chassis.)

a. Connectthe

yellow

wirefromHor, DriveTrim-

mer

Clb topin I oItubesocketV406 (horizon"

tat output).

b. Connect

the loose end o{ condenser

C4l8

.0039m{d) to terminal

2 o{ switchSWIa.

c. Connectthe maroon rvire {rom terminal I of

switchSWla to theLerminalo{ Hor. Lock coil

L40l to which condenser

C41B (.0039mfd,

mica) rras

{ormerly connected.

d. Connectthe

blacklead(grounil

side)oi Width

coil L&02 to terminal I oI switch SWla.

e. Connect

theblack

lead(lowside) o{Hor-Drive

trimmer C423

to terminal

5 of s$'itchSWla.

{. Connectthe loose end of condenserC4, 330

mrnfd, mica (connected

to terminal 11 o{

SWlb) to pin 2 o{ tubesocketV405 (6SN7)

horizontal

oscillator,

A. Connecl

the

loo.e

.nd of th. gre.n

uire lcon-

nectedto termirralI0 of SWlbr to

pin4 ol

tube socket

V405 (6SN7) horizontal oscillator.

h. Connect

the loose end o1the blue lvire (con-

nectedto terminal

3 of SWIa) to the discon-

nectedsideo{ resistorR43B(8,200

ohrns).

i. In all chassisexcept

2lDl and 21E1,connect

the loose end of the orange wire ({rom the

tie lug connecting to terminal 9 of SWlb)

to the junction o{ condenserC426 (.25 mfd)

andresistor

R442 (6,800

ohms).

In 21D1

and21E1chassis,

connectthe

loose

end o{ the orangewire (from the tie lug con-

necting to terminal 9 of SWfb) to pin 4 of

V406 (6CD6G) tube. Pin 4 ol V406 is used

asatie point connecting

to terminal 5 of T404.

j. Connect

the looseend oI the white wire ({rom

thetie lug connecting

to terminal

l5 of SWlc)

.t4 )

\'-k///

to the gray or white lead {rom the deflection

roke whichis connettcd

to a tieluli havingno

olherconnectiolls

to it.

In all chassisexcept

2lDl and 2IEl, connect

the discolnected

end o{ resistorR9 (22.000

ohos) attachecl

to thetie strip in the Adapter-

Converterto the juoction o{ condenser

C427

t.02 mfd) and hor. linearitycoil L403.

In 2lDl and2lEl chassis,connect

the dis-

connectedend ol resistor R9 (22,000 ohms,

rttached to the tie strip in the Adapter-Con-

verter sub-chassislto the tie lug which is the

junction

o{resistor

R415(22.000

ohms),elec-

trolytic condenserC4078 (20 mfd), and the

lead {rom height control R408.

Ir all chassis

except2lD1 and 2lEl, connect

the loose encl o{ the red rvire (connected

the tie strip in the Adapter-Couvertersub-

chassis)to the lead (usually

red) connected

topin l0 ofpicture

tubesocketV306.

In 2lDl and 2lEl chassis,connectthered

lead.from

pin l0 of V306 (picture)

tube

socket

to the tie lug which is the junction of resistor

R10 (220,000

ohms),condenserCB

(.01

mfd)

and a 3-inch long red lead in the Adapter-

Converter sub-chassis. Clip ofi and discard

thc (3-jnch

long) red lead.

Connectthe

loose

endoI condenserC3ll (.047

rnldi to the Lie

point,junctionoI resistorR9

(22,000 ohms) ald resislor RfO (220,000

ohrrs). Resistors

R9 andRlO aremountedon

the8 terminaltie strip in thesub-chassis.

Connectthe maroon rvire (connected

to the

3 telnrinallie stripirt sub-t-hassis)to pin 5 of

socketV408 (6W4) dampertube.

Connect loose end ol R4uli:i

(150,000 ohms)

or R404 (1.2 megohms),

whicheverrvas

dis-

corrnected;151ep2h,to terminal

23 o{ SWld.

Connect

the looseend of the red wire (con-

l428 ADJUSTI{EIITSTORSTA||OANO

BLACT(t fltilIt PtcTuRE$

Figure 8. Aotton View ot tV

Chossis

wirh Adlrpter-Converter

Insrclled. Showing Lo.otions of

T'ibes. Conlrol+ dnd Adiusr-

menls.

Fig','re 7. B6rk View of IV Chossis with Adcpler-Convertet

inrtdlled, showing Lo(otionE of Controls ond Aduilrnenrs.

nected

to terminal

24 of SWld) to the cliscon-

nected end o{ resistor R406 (1 megohm or

' 680,000 ohms

q. Corrnectthelotse endo{ the rvhitewire (con-

nectedto ternrinal

16o{ SWl.d)to electrolytic

corttlenset

C407A (100 rn{dl.

r. ConnecLthe looseend of the red wire (corr-

nectedto HeightcontrolR408,to terminal27

o{ SWld. SeestepIe.

s. Connectthe loosc

eod ol the wire (connected

to Vert. Lin. controlR4I0i to terminal19 o{

SWId. Seestep

2f.

t. Connect

the looseend o{ the greenwire (con-

nectedto terminal20 o{ SWld) to pin I o{

tubesocket

V40fA (6SN7) vertical

oscillator.

u. Connect

thelooseend

of themaroon

wJre

(ex-

tending{ronr

the

'color

control

panel) to elec-

trolyticconderserC4078 (20 mId).

Beforeturning ihe receiveron, it is important to oheck

the circuit to be sure that the connectionshave been

properly made. The partial schematicwill be o{ belp in

checkingcircuit wiring.

MOUNTING THE CABINET BACK

Be{ore

mountingthe baok.it may be rrecessaryto cut

arvaya smallscctionor.erthe Color Control

Panel.

o..ol

\lt[r.t ri,

vfIL liotD

llfle$T

l0lllsTilEflT5

R405

r10L

R327

8irflIxt5s

fl r+or

lill r$rcrr

ljll sroci|Ic

'i i na|lsroRrtR

lilfM!'&:

L3O4

v405

16Siltcrl

316

OPERATING

THERECEIVER

IMPORTANf: Atter instqlling the AdoPrer-Convefier, be sure to instruct the customer on the operotion

ol the fV receiver tor receiving cofor signofs. The "lnstructions For Operoting" which are 'supplied

with the Addprer-Converter should be given to the customer,

PICTI'RE

ADJUST'YIENTS

PICTURE

ADJUSTMENTS

FOR"STANDARD BIACK

-AND -WHITE- PICIURES

Picture adjustments

for "Standar,i

Bla,

k.-and-White" reivinga "Color" signal,since

a compromise

adjustment

I'iclures

arnmade

the

-ame

ashelore

t.h.'Adapt'

r Con. r"ar

-ir.'erir'rcs

bene""..ru.)

Loobtain

!ati5facto.itGt i-

verter was installed However u'henrnakingthe ion.trap nessand f..us when suitciring {rom one type oi pi"iur"

and

{ocus

adjustment,recheck

these

adjustments

rrhi]e

re- to another.

For "stqndqrd Blqck qnd White,, pictures

lor receiving

"Standard Black-and,White"pictures.

operatethe receiver thesameasbe{orethe Adapier"Con-

r,erter

was

installed,

exceptfor operatingthe

Color

Change .

s$''itchat Lhe

rear of thi chassis. Foi"standard Blaci-

and-Whire"picLures

roLatetheColor

Changeswitch

Iull1,

lu th. leltto thr.

"Standard

Black"Whire--posirion.

For Block qnd White Piciures From Color Signols

lior rcceiving black ancl

lvhite pictures lrom color sig-

nals, operate Lhe receiver the same as {or "standard

Black-and-While"

pictures.

with theexception

oI thefol-

lo!vtnq:

l. Rotate the Color Chanses1r'itchto Lhe

"Black-White

Frorn

Color"

rrosil

ion rienLerr

2. Operate

all{rontpanel

controls

{or tuning

in pictures,

with theexception

o{ the Vertical Hold control.

3. If necessary,

usc the Vertical Hold control on the

Picturcadjustrnents

{or black-and-rhite

pictules

frorn

colorsignals

arenrade

thesame

aslor "Standard

Black-

and-White"pictures

lyiththe

exceptionthatseparatc

coD-

trols arc used{or someadjustments,Secfigures? and {3.

Makethesepicture

adjustnents

as inslructecl

in the Jol

lowingparagraphs.

Height ond VertiG(rl

Lineqrify Adiustment

_ lleight and vertical

litearity adjustments

tor piclure-s

{rom Color,"ignals

aremade

using

a separate

seL

o{ con-

Lrols.The

lleight and

Vert.Lin controls

{orpictures

from

"Color" signalsaremoun[ed

ontheColorControl

Panel

at therear of thechassis.to the leJt

of theporver

trans-

{orrner. Seefigure 7.

I{ thepicLureis oJincorrect

height(r'erLical

size),

ad-

just the EIEICHT control. This adjuslment

may a{Iect

theverticallinearityo{ the piclure. If necessary.

alter-

nately

adjustthe \rERT.LIN. controlandHITIGHT

con-

trol. Notethatthe

upper

portion

of thepicture

is afiected

mostl,vb1'the VerLicalLinearily control; thelowerpor-

tion by the Hcightcontrol.

Picture lill, Picture Centering, ond Florizonlol

Lineority Adiustment

Picturetilt, picture

centering.

and horizontal

linearitv

adjrr.trrr.rrtlor

fir'lures

ironr

"Coior"

-ignals

ar" rnad.

usingthesamccontrols

or adjusttrerts

asusedfor"stand-

ard Black-and-White"pictures.

Instructions

{or making

theseadjustments

are gir.en

in "[nslallation

ald Service

Notes" (included

rith receiver)or in Service

Manrrals

5336or-5362.Theseadjustments

canbemadervhile

re-

c:iling eilhertype o{ pictureand generally

need

lot be

re;.-eated.

Ilowcr.er,a conpromiseadjustrnent

is some-

limesnecessary

sothat satisfactory

linearityis obtained

Color Control Panelat the rear df the chassisfor lock-

ing in the pictur.e

vertically.

For Color Pictures In ColoF(Using a Color Wheel)

For receiving

colorpictures

in color (using

an appro-

priate

sizecolor

wheell,operateLhe

receiver

thesami as

{or "Standard

Black-and-White"

pictures

rvith

theexcep-

tion of the follorving:

1. R_otate

thc Color Changesrvitchto "Color,, positiorr

({ully to theright) .

2. Operate

all lront panelcontrols {or tuning in pictures

with the exception

of the Vertical Hold control.

3. If necessary,

usethe Vertical Hold control on the

ColorControl

Panel

attherear

of the

chassis{or lock-

ing in thepicture vertically,

,1,.Operatethe color wheel according to the operating

instruotioDs

supplied

with it.

PICTURE

ADJUSTMENTS

FOR

BLACK.

AND

-WHITE

PICTURES

FROM

-COI.OR-

SIGNAIS

for all typeso{pictures.width

{ niJthr

orrtloli" rrut

I'ror

ideJ

[or

adjustnrent

nfBlack

arr'lWhite_

picture.

lrom a 'Color" signal.Ceneralll.

this type of picture u,ill beslightly narrower than the size

required

tofill the

picture

viewing

screen.

If the

width is

Freallr

reduce,l.,"he.l

116L".;ro;1"1

driveadju-tmenL

instructed

in paragraph

belon

on"Horizontai

DriveAd-

justment". ChecLthe rectifier tube and tubesin the hor-

izortal circuit. Be sure that the Color ChaneeSwitch is

in thn

"Biack-$hite

From

Color"positjon.

Horizontql Oscillqtor Adiusiment

Using o Color Signcl

_ HorizonLal oscillator adjustment is required i{ the

horizontal control (on the {ront panel) wili not keepthe

picture

in "holizontalsync"throughat least

hal{ oI its

rotation so_

thal the picture does not "break up" when

srvitching

channels,

However, belore rnaking the horizontal oscillator ad-

juslment be surethat the pictute can bc made to remain

stationary

up and

down (sync

vertically)aslack of both

vertical and horizontal

sync is an indication oI other

trouble in the sync circuits such as a defectivetube or

othercomponent.

A separate

Horiz. Lock trimrner is used{or adiustrnent

oI tbehorizontal

o:r'illator

rvhen

receivinq

pictuies

lrom

a Color

signal.

Se"

figur"s

i andB for a;j;slmert loca-

a10ns.

Horizontal oscillatoradjustment

shouldbemadedurinq

the hours lt'hena station is transmitting "Color,' sienals=.

Howdverif a "Color" signal is not availablean app"roxi-

661e

rpresel)

adjustmentcan

benrade

using

an oicillo-

scopeas instructed under paragraph "Ilorizontal Oscil-

lator Adjusttrent Using An Oscilloscope",

To make the l-Iorizontal Oscillator adjustment usilg

a co)or

signal.

procaed

a- loJlous:

a. Setthe Color Changeswitch (at the rear oi the chas-

sis) to the "Black"White Frorn Color" position.

b. Tune in a channel which is transmitting "Color" sig-

lals.

c. Set

the

HorizontalHold controlonthe frort panel

cenlero{ rotation.

d. Using a non-metallic

screwdriver,

adjusl the Horiz,

Lock trimmer (for Color signals) until the picture

is in sync, Seefigures 7 and 8 {or adjustmcntloca"

ltons.

Note: IJ a brightvertical

lineappealsin the

picLure

ntay be necessary

io rclouch the Horiz, Drive trimmer

(for Color signals) a{ter n,aking the Horiz. Oscillator

adjustnrent.

See

paragraph

on"HorizorLal

l)rive Adjust.

ment" belorv.

Horizontql Oscillqtor Adiustment

Using on Oscilloscope

A separatelloriz. Lock trinmer is used

{or adjustment

of the Horizontal

oscillalorfor operationfrom a Color

signal, Seefigure 7 lor adjustmentlocations.

Florizontal oscillator adjustmentis bestmade with the

receivertuned Loa station transmitting "Color" signals,

However,an approximate

(preset) adjustment

can be

madeusingan oscilloscopeto indicate

the{ree

running

frequencyo{ the horizontal oscillator (29,160cycles) {or

colorsignals,

To make the horizontal oscillator adjustnent using dn

oscilloscope,proceed

as follows:

Allorv.the receiver and oscilloscope to warm up {or a

Connect Lheoscilloscope

through a 15 rnm{d conden

ser to the control grid of the horizontal output tube

v406.

Setlhe

u:r-iilo'up".rn.ep

Jle.luencrfori.u,5 tlcles.

Thi- i- on" halt

"f rhehoriz"nrai

oi"illaLorlroqu.n.y

(15,750

cvcles){or "Standard

Black-and-White"

pic-

Lures.A checkfor the 7.875 cycle {requenc,v

can be

made by srvitching the Color Change Switch to

"Standard

Blaok-and-White"

position

andtuningin a

station with picture in sync. At the proper setting oI

the 7,875 oscilloscopefrequency, two cycles oI the

horizontalwar.e{orm

shouldappear

onthe

oscilloscope

scleen.

I)o not disturb the oscilloscJpeafter setting the

oscilloscope

srveep{requency.

4. S$'iLchLhe

Color Change

Siitch to the "Black,I7hire-

Fr-orn

Color" position. Setthe Horizontal

Hold con-

trol onthe front palel atthe center

of rotation. Using

a nol-metallic screwdriver, adjusr the Horiz. Lock

lrimmer

([or color

sigrral::5eeligur,'7r untjl Iour

,1cles

oi theh,ri.,,ntaIuor.Jorrn

alppear

onthe

oscil-

loscope

screen.

lf thoaLor"

adju"Lrrrcrrti. 1'rop.rl1

mede.

orrllslight

touch-ut'

ol thpli;r'izunlal

O-"lllaio.

oradju"rm.r'r

otih.

Horiz. Drive trinmer may be required lvhen the set is

Lunedto Color signals, Touch up of the Horiz. Drive

trimmer ({or color signals)

is required

if a bright ver-

tical line (s) is visibleln thepicture.

Horizonltrl Drive Adiustment

A separateHORIZ. DRM tr.immer is used lor hori-

zontaldrive

adjustment{or operaLion{rom a "Color" sig-

nal. Seefigures7 andil lor adjustment

locations.

If this adjustnrent

is not properly madea lrlhite

vertical

line (s) rnayber.isible

on Lhescreen.It may alsobe diffi,

cult to obtain sufiicient picture width and brightness.

Adjust

as{ollows:

I. Tuln theCHANNEL control to a channel

transmitting

a "Color" signal.

2. Set BRIGIITNESS control aL a lorver than average

setting.Tuln PICTURE

controlcompletely

totheleft.

.'. | -irg a rron-'rretalli,

""rewilrivpr

turn thn HORIZ.

DRIVE screw'

(out

tothe

left) asfar aspossible

while

still nraintaining tension on the trimmer plate. If a

white vertical line (or lines) appearsin the raster,

slowlyturn the.HORIZ. DRIVE screwin, until the

line

) just disappears,

NoLe:

ChecktheHorizontal

Oscillator

adjustment

after

naking the HORIZ. DRM adjustment.

PICTURES

USING A COI.OR WHEEI

S idthadju-Lment

-hould

seldomii ever

bercquired.

Tl Lhcpicture

ha. insufficicnt

r.idrh,

he,-k

rhpHorizon-

tal Drive Adjustment, the rectifier tube and tubes in thc

horizontal circ_uit.1{ .rvidth

adjustmentis required, make

adjusmentas{ollows:

l. Setthe

Color

Changeswitch

to "Color,,

position.

2. Adjust the rvicitb

control until the picture width is ol

adequale

sizeto fill the picture mask in {ront o{ the

color wheel. CAIITIONi I)o not reduce

the picture

width below the size of the picture mask, or to the

point wherebright or dark vertical bar(s) arevisible

at the le{t side of the picture,

IJ the width is reduced

below the abovelimits. damaee

rrrarre"ult

to lhe

hurizontal

outpullube

and

other

cofr-

ponl.rls

in lhehorizontal

outpul

ircuit.

Color Wheel

Instructio[s {or the attachmentand operation of the

color rvheelrvill besuppliedrvith the coloi wheel,

PICTURE

ADJUSTMENTS

FORCOTOR

lir lure

adiu-trrrenlsiorreceir

inq

Color

pir-lures

{

u-ine

a..,lor nh.ol

t arelhe.ame

lo-r

bjack

andwhir. pi.l

tures {rom color signals-

with the exceptionthat the pic-

tur.esize(height andwidth) arereducedto approximatelv

one-hal{the sizeof the picture tube {or viewing througir

the mask oJ the color wheel.

Except{or width adjustment(ouLlined

in theparagraph

below), nake all picture adjustments

following the in-

slruclions

given

under

theheading

'-Pi'-turc

{djustmcnts

For

Black-ind-Whitc

Pi.tures

FrJm

ColorSignals".

widrh

Picturewidth

Lr,olor pi,-tur.s

has

beenpreset

atthe

far-lorylor

normal

rvidthu.ing

anap;:ropriate

sizecolor

wneel.

The rvidth adjustment ({or color pictures) is locatedin

the underside of thc chassis. Seefigure B. Removal o{

the chassisfrom the cabinetwill be iequired {or making

adjustment.

TROUBIE

SHOOIING

in sweep{requencies

usedJor "Color" signals.

Voltageor resistancerneasurements

can be usedto lo-

catedelective

componentsin a conventionalmauer. In

pleneralpicture ol rastertroubies {or picturesfrom Color

signals

will be similar to that o{ "$tandard Black and

White" picLures. The in{ormation contained in the

TroubleShootingChartin ServiceManualNo. 5336 or

5362 rvill be of heJp.

TVVOTTAGEDAIA

(Vohdges

given on schemqtic

diogrom)

Voltages indicated on this schematjc are taken $ith the color chanee sl{irch in rhe "Black-

hir, 'fom Lu,of'Io-irion.

For voltagcs r,',idrrhe colol cl,ange switrh in rhe "Srandard tslack-WhiLe" posirion, r€Iet

ro tle schematics in Service Xlanual 5336 r,r 5362.

WitL the color change switch in the "Color" position, voltage readings rakcn riill bc ap-

proximarely the same as v-ith thc color change s$'itch in the "SrandBrcl Black-White" posi-

tion with exception of readings raken at pins 1 anrl 2 of verLical oscillaLor V401A and ar

Lhe

screen of horizo lal Oulput \i406. nt tLe-qe

points volrage readings witt be appr(,ximarely

the same as n'ith the color change switch in thl] "Black-White {rom Coior" position.

Note that voltage readirrgs are taken with contlol adjustments on rhe "Color Control

panel" at hau rotation and wiLh the color change switch in any of its three positions.

. PICTURE control tumed fully clockrvise. CFIANNEL conrrol ser on an unuscctchannet.

OtlLer front controls set at approximately half rotation. \iert. Lir. and Ileiqht set ar

approximaLely half rotation.

O Linc voltage117

volts,{C.

a yoltages measured vith a vacuum rLLbe

voltneter between rube sockcr relninals and

chassis,uuless otherr,yise

ilxlicated.

I loltages markcd with an asterisk + nili vary uidbly nith con|Iol selring.

putsed high vorrases are ,..".', "" tt"l:[",]! v406, and on rhe firarncnt rerninars and

capoI tl,e ]B3CT tube. NO.A.TTE)\4PT

SHOULD IJEItADE TO TAKE I,IEASURDMENTS

TRON'I TITESE POINTS I]NLESS SUITABLE TEST EOUIPI{ENT IS AVAILABLE.

Picture tube 2nrl anode voltage can he m"asurcd lrorn rhe 2nJ anode connector and

sLould be taken only l{irh a lrigh voltage instrunent such as a kiloroltmeter or a VTVM

with a high-volage p19be:2!d anodc voltage is appr.oximately12.5 KV. Proper litanent

voltage check of the lB3cT tube nray be made by observiug frtarlcnr brilliancy is compared

Nith lha! obtaincd1\'itha 1.5volt drr cell haltery. PARTS

IIST

, ffeplaeem,e.nt

irarls for {d_apter-Conrerler

C{l0l ar. IistFd

in lhis parts lisr: the-e parts hare.lmbol number.

lowerlhan "25--."

For otherTV part. nith raluc- shorrn

on the partials,hematir'figur.0 or fgure lb. sr.elhe parts

list in Service Manual No. 5336 or 5362.

Troubleshcotingthe sneepcir-cuils

o{ the TV chassis

with the Adapter-Converter

sub-chassisinstalled can be

accomplished

by the useoi Lhe

wavelorns shown on the

schematics

givenin the ServiceManuals. There will how-

everbesomeslight dillerencesin shapeof wave{orms

and

difierencesin the number o{ cyelesof vertioal or horizor-

talware

-hapes

appearing

ontheoscillo-copc.Thisis

due

lu thcdifferen'

in curnpun.nt

ralues

andthoditl.renc.

Symbol

Resislors

Description

RI 470.000ohms.

11wa1t...........................6088-4?4

R2 1ruegohm,VertjcalHold......................75tsf36

R3 2.5nregohms,Height..............................?5813-3

f3000 ohms,Vert. Lin., carbonLype,

i u".d rrirhallcha"si-ex,.pr

Rr 1 21Dl,rnd21tI.................................;;BI3-;

l''3000 "hrrr-.

Vnrl.

Lin..

rirc rluurrcl

I type,usedwith 2IDl and 2lEI

t chassis.............. ....75813-18.

820 ohms,% 1r'att,uscdwith all

chassisexcept

2IDl and 21E1........6088-821

"'680 ohms,I rvatt.used

with 21D1

and 2lEl chassis................................60814-681

iJ.200ohtrs,

% rr'att..............................6088

822

270.000ohms,

l': natt..........................6088-2?4

22,000ohms"

{ natt............................

6088-223

Rt0 220,000ohms.1 watt...........................60814-224

'RII 150,000ohms,'1ratt...........................60814-154

Rl2 I50,000ohns,1 watt...........................60814-154

+Not {urlishcd in kit; must bc orderedseparately.

sflEN Sfl Stl0tNtl PAtl 0t fa,

"sntafi0 SueI lNa MtE" PtcnnE|.

Condensers

Symbol l)escription Part No.

C1a 135to 400 mm1d,

Hoiiz. Lockldual 66L32-2

Cfb 20to280

mmfd,I{oriz.DriveJtrimmer

C2 .0012nrfd, silver mica, 5%........----..-.6SRl-72

C3 330nmld,nrica....................................65821-331

C4 330mmfd.

mica.....................................6582f-33I

C.5 330mmfd,mica.....................................65821-331

C6 .25rnid,200volls,paper................--.....6489-42

C7 .02

mfd,400 r'olts,

paper......................6eA2-9

Cg .0I m{d,400vol1s,piper.......................64B9-32

Cq 20 rmrrfcl,2.000

volts,

ceramic....,........65423-4

Cf0 .t mld,400volts,paper............

...........64F9-26

Coils qnd Misc, Pqrfs

L1 WidthCoi1..............................................q4A38.I

SWla Wafer

switch..........................................T2C36-51

SWIb Walerswitch......................................Part

of SWla

SWlc Wajer sn'itch..............................--..........i7C86,52

SWld Waferswitch..........................................7

CZ6-53

ControlKnob (for colorswitch)

...........33426

DeLert,

switch

(for SWI)....................T7C36-54

Escutcheonplate({or color

switch

)

.....26438

Scrcrvstud

ifor SWI

)

...........................77C36-Ss

PartNo.

Admiral Corporalion

cHtcAGo, tLLtNots

r/26Sll?rr

r/26Sll10r 6l{6cr

lBicT

NOTE

Symbol rumbers tor porls

in ihe Adcprer-Converler

qre Iower thdn "25"t for

exomple, R4, clo, etc.

Figure 9. Po'fidl S.hemdli. fot dll Chdslis Excepr 2lDl ond 2tEl, Showing the Verti.cl ond Horironral Sweer cir.uirs with rhe

Addprer-Converler wiring Add€d. For lhe .or plere s.hemslic wirhour the Adaprer-Converrer, see servi.e manuol 5336 or 5362,

6CD6

NOTE

Symbol nunbers tor porls

in lhe Ad.rpter-ConYerler

.re fower lhon "25"i tot

exofiple, R4, GIO, etc,

Fisure lo. pdrriltl Schemdri. {or 2lDl cnd 2lEr chqssis. Showins rhe Verli.dl d'd Horizonrct Sweeb Circu;rswirh AdoErer-Con-

verter wiring Added. For the Complete 5.hemdli. wirhour rhe Adopter-Converter, refey to Servi<e Monuol S33o or s362.

=.1

-'0il

6[4cT

,'.i, 'xi,

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