Philco L2600BU Benutzerhandbuch

PHOTO

FACT8

Folder

PHILCO

CHASSIS

13G20,

13G20C,

13G2OU

w»

MODEL

L2602BR

CAUTION

ONE

SIDE

OF AC

LINE

CONNECTED

CHASSIS

TRADE

NAME

MANUFACTURER

TYPE

SET

TUBES

POWER

SUPPLY

TUNING

RANGE

PHILCO

Models

Chassis

L2600BU,

L2602BR,

L2604BK

13G20

L2600CBU,

L2602CBR,L2604CBK

13G20C

UL2600BU,

UL2602BR,

UL2604BK

13G20U

Philco

Corp.,

Subsidiary

Ford

Motor

Co.,

Tioga

"C"

Streets,

Philadelphia,Pennsylvania

Television

Receiver

VHF

Fourteen,

UHF

Fifteen

110-120

Volts

AC,60

Cycles

RATING

110

Watts,

1.3

Amp.

117

Volts

Channels

thru

VHF,

thru

UHF,Video

IF45.

75MC,Sound

IF41.

25MC

(Intercarrier)

SERVICING

INTHE

FIELD

SAFETY

GLASS

The

safely

glass

isan

integralpart

ofthe

picturetube.

FUSE

DEVICE

the

propersetting

the

Horizontal

Stabilizer

Coil Slug

(Bl).

(See

"Chassis

- Top

View"

Photo.)

WIDTH

5.6S2

fusible

resistor

used

forlow

voltagepowersup-

ply

protection.(Forlocation,

see

"Cabinet

Rear

View".)

VHF

OSCILLATOR

ADJUSTMENT

Set

fine

tuning

atthe

center

ofits

range

and

adjust

osc.

slug

(one

for

each

channel)

for

best

sound

and

picture.

AGC

provision

made

vary

theAGCon

thisreceiver.

HORIZONTAL

OSCILLATOR

FIELD

ADJUSTMENT

Coarse

adjustment

ofthe

horizontal

hold

accomplished

The

width

maybe

varied

bya

Width

control.

(See"Tube

PlacementChart"

for

location.)

FOCUS

The

focus

maybe

varied

connecting

the

lead

from

pin4

the

picture

tube

variousvoltagepoints.(Forlocation,

see

"Chassis

- Top

View"

Photo.)

CENTERING

Centering

accomplished

by2

magnetic

rings

located

yoke

rear

cover.

HOWARD

SAMS

CO.,

INC.Indianapolis

Indiana

The

listing

ofany

availablereplacement

part

herein

does

not

constitute

inany

case

recommendation,warranty

guaranty

Howard

Sams

Co.,Inc.,

astothe

quality

and

suitability

suchreplacement

part.

The

numbers

these

parts

havebeencompiled

from

informationfurnished

Howard

Sams

Co.,Inc.,

by the

manufacturers

of the

particulartype

replacement

part

listed.

208

Reproduction

use,

withoutexpresspermission,

editorial

pictorial

content,

inany

manner,

prohibited.

patentliability

assumed

with

respect

totheuseofthe

informationcontained

herein.

1963Howard

Sams

Co.,Inc.,Indianapolis

Indiana.

Printed

inU.S.of

America

DATE

9-63

SET

652

FOLDER

SOUND

®A6GH8

AUDIO

OUTPUT

@6AO5A

VAC

S§

4®5

P3VAC

72VAC

62VAC

5^VAC

52VAC

4A5

4A3

8Xl

4A5

3300Q

[

©°J

4A312

46VAC

5A4

SOURCE

5mfd

29VAC

^AC

,5A4

^DENOTES

CHASSIS

GROUND

See

parts

list

for

alternate

value

application.

Voltagemeasurements

taken

withvacuumtubevoltmeter.

2.All

controls

setfor

normal

operation,

signalapplied.

Measuredvalues

are

from

socket

pinor

terminal

common

ground.

4.All

terminalsviewedfrombottomunlessotherwisedesignated.

Numbers

assigned

terminals

maynotbe

found

onthe

unit.

Supply

voltage

maintained

ratedvalue

for

voltagereadings.

Waveforms

taken

withcontrols

setto

produce

voltspeak-to-peak

signal

picture

tube.

PHOTOFACT

STANDARD

NOTATION

SCHEMATIC

©HowardW,

Sams

Co.,

Inc.

1963

TUNER

SCHEMATICS

PAGES

6,10,11

130V

90V

QV/fc

TERMINAL

GUIDE

PAGE

PINS

5 OFV6

ALT.

AUDIO

OUTPUT

TRANSFORMER

CIRCUIT.

USED

MODELL-26MBK

114,1.11

TERMINAL

GUIDE

VIDEO

OUTPUT

©A10JY8

CONTRAST

15K

TA°i?

1QK

PICTURETUBE

@16ASP4

BRIGHTNESS

250K

130V

022

VERT

MULT-

®17JZ8\

VERTOUTPUT

.005

.ooa

-rlSOmmr

.J27K

NOT

MEASURE

RECT

HORIZ

MULT

OUTPUT

®21GY5

-J~

(•HORIZ

HOLD

PHILCO

CHASSIS

13G20,13G20C,

13G2OU

PAGE

TUBE

PLACEMENT

CHART

OFF-ON-VOLUMEVERTHOLDBRIGHTNESS

CONTRAST

CHANNEL

SELECTOR

FINE

TUNING

VHF

TUNER

ITT-75

TOP

VIEW

INDICATES

BLANK

PINOR

LOCATING

KEY

AUDIO

OUTPUT

)

~@]

QUADRATURE

COIL

HORIZ

OUTPUT

DIODES

(AFC)

-----

/wTN.

1G3

DIODE

VIDEO

DETECTOR)

FUSIBLE

RESISTOR

HORIZ

HOLD

DIODE

RECT)

LINEARITY

—

TUBE

FAILURE

CHECK

CHART

The

following

chart

lists

tubeswhose

failures

are

most

likely

produce

indicated

symptoms.

Refer

tube

placement

chart

for

location

and

type

tube.

POWERSUPPLY

FAILURE

raster,

sound

XI,

R64

SWEEPFAILURE

raster,

has

sound

V8,

V9,

V10,

Vll

vertical

deflection

Poor

vert,

linearity

foldover

Poor

horiz.

linearity

foldover

V8,

V9,

V10

Narrow

picture

XI,

V8,V9,

VlO

Vert,

off

freq.

Horiz.

off

freq.

M4,V8

LOSS

PICTURE

SOUND

pic,

sound,

has

raster

VI,

V2,V3,M3

(Video

Det.)

pic,

sound,

has

snowV201,V202,

pic,

has

sound,

has

raster

V3,

V12

Has

pic,

sound

V3,

V4,

V5,

Overloaded

picture

SYNC

FAILURE

vert,

sync

horiz.

sync

M4,

vert,

horlz.

sync

This

receiver

employs

tubes

used

ina

series

filamentnetwork,

openfilament

inany

tube

will

cause

thesettobe

inoperative.

(See

circuit

below.)

120n7W

T0117VAC

LINE

SET

652

FOLDER

PAGE

Howard

Sams

I«T:Hllll:fcM

PhotoARROWS

INDICATING

TUBE

LOCATIONS

ARE

POINTING

TOPIN1

UNLESSOTHERWISE

INDICATED

PIN9PIN11

PIN9

450V

70V

55V

130V

PAGE

PRINTED

BO,

RESISTOR

DENT.

CAPACITOR

DENT.

PAGE

ALIGNMENTINSTRUCTIONS

Use

Isolation

transformer

and

maintainvoltage

at117

volts.

Allow

20-mlnute

warm-upperiod

forthe

receiver

and

test

equipment.

Suggested

Alignment

Tools:

thru

A12,

Mixer

Plate

Coil

GENERAL

CEMENT

#8606,

8606L,

8869

WALSCO

*2543,

2544,

2588

VIDEO

ALIGNMENT

Connect

the

synchronizedsweepvoltage

from

the

sweep

generator

tothe

horizontal

input

ofthe

oscilloscope

for

horizontal

deflection.

Use

only

enough

generator

output

provide

usable

indication.

Note:

Response

may

varyslightly

from

those

shown.

Connect

variable

bias

supply

totheIFAGC

line

(

point

) and

adjust

obtain

response

curve

which

shows

indication

overload.

Disable

Oscillator

section

Mlxer-Osc.

Setthe

Channel

Selector

toany

non-interferingchannel.

INDICATOR

Connect

probe

VTVM

thru

47K

resistor

point

<Q>

Common

ground.

Connect

probe

VTVM

thru

47K

resistor

point

<^>

Common

ground.

Connect

vertical

input

ofa

scope

point

<g>

. Low

side

ground.

GENERATOR

COUP1ING

Connect

high

side

ungrounded

tube

shield

over

Mixer

-Osc.

Low

side

ground.

Connect

high

side

ungrounded

tube

shield

over

Mlxer-Osc.

Low

side

ground.

Connect

high

side

ungrounded

tube

shield

over

Mlxer-Osc.

Low

side

ground.

SWEEP

GENERATOR

FREQUENCY

44MC

(10MC

Sweep)

MARKER

GENERATOR

FREQUENCY

41.

25MC

47.

25MC

43.

SMC

43.OMC

43.

SMC

41.25MC

42.

SMC

44.OMC

45.

SMC

47.

ADJUST

A2.A3

A6,A7,

Mixer

Plate

Coil

REMARKS

44.0

Adjust

for

MINIMUM.

("""""N

45'5/

'I42

Adjust

for

maximum.

P'°

47.25

41.25

FIG.

Check

for

maximumgain

and

symmetry

response

with

markers

shown

Figure

order

obtain

proper

response,

may

necessary

slightly

retouch

A4,AS,A6,A7,

and

Mixer

Plate

Coil.

SOUND

ALIGNMENT

Tune

ina

station

and

adjust

for

ma**"1"™

sound.

Reduce

signal

strength

atthe

antenna

terminals

until

distortion

appears.

Continue

reduce

signal

whilealigning

for

undlstorted

output

adjusting

AS,

A9,

AID,

All.

4.5 MC

TRAP

ALIGNMENT

Tune

strong

signal

and

set

the

Contrast

maximum.

Adjust

the

Fine

Tuning

until

beatpattern

visible

onthe

screen.

Adjust

A12for

MINIMUM

beatinterference.

FOCUS

POINTS

CHASSIS-TOPVIEW

SET

652

FOLDER2

PAGE

MIXER

PLATE

A6BL8/ECF80

ftzi

OUTPUT

B+

* 1

RFAGC

FIL

.001

TOFIUMENT

STRING

CHANNELSELECTOR SWITCHSHOWN

CHANNEL

POSITION

PHOTOFACTSTANDARD

NOTATION

SCHEMATIC

©HowardW.

Sams

Co.,

Inc.

1963

PARTS

LIST-

PAGE

POSITIONSWITCH-TYPE

VHP

TUNER

TT-75

MIXERMIXERPLATECOIL

@)A

6BL8

TUNER

OUTPUT

B+TO

UHF

TUNER

FINE

TUNING

VHF

TUNERPART

ITT-76

.001

PHOTOFACT

STANDARD

NOTATION

SCHEMATIC

CHoward

Sams

Co.,Inc.1963

SOOmml

.0011

6/^J\/"0\y-$fvy^o/TTv<>^V>y"x<>^~V>^V>y~N-o-'^

•Sp

12mmf

>,OK

TORFAGC

SOURCE

47000

FILAMENT

•°01

STRING

***

4Aj

~~~

(-ooi

CHANNELSELECTORSWITCHSHOWN

CHANNEL

POSITION

(UHF)

POSITIONSWITCH-TYPE

VHF

TUNER

TT'76

'30C9EI

'OtOEl

SISSVH3

ODIIHd

VHP

TUNER

TT-75

SET

FOLDER

PAGE

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