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A-BOARD WAVEFORMS -- FORMAS DE ONDA TARJETA A

 WAVEFORMS -- FORMAS DE ONDA

ALL MODELS - TODOS LOS MODELOS

All Models -- To-

dos los Modelos

1.0V p-p [20

µ

s]

TPA5 (VIDEO)

1

1.7V p-p [20

µ

s]

(R OUT)

A11-1

5

1.3V p-p [5ms]

IC451 PIN 7 (DRIVE)

9

3.1V p-p [20

µ

s]

IC001 PIN 43 (FB PULSE)

13

2.9V p-p [5

µ

s]

IC801 PIN 5

17

1.0V p-p [20

µ

s]

IC001 PIN 22 (Y IN)

2

1.4V p-p [20

µ

s]

(G OUT)

A11-2

6

48.0V p-p [5ms]

IC451 PIN 12 (VERT OUT)

10

160.0V p-p [20

µ

s]

Q501 Collector (H DRIVE)

14

N/A

IC001 PIN 24 (C IN)

3

N/A

1.4V p-p [20

µ

s]

(B OUT)

A11-3

7

28.0V p-p [5ms]

IC451 PIN 13 (PUMP UP)

11

110.0V p-p [20

µ

s]

Q551 Collector (H OUT)

15

IC001 PIN 35

 ADC OSC

14.20MHz X’tal

4

9.2V p-p [5ms]

IC451 PIN 2 (VERT IN)

8

5.5V p-p [20

µ

s]

IC001 PIN 44 (H PULSE)

12

260.0V p-p [5

µ

s]

IC801 PIN 1

16

Waveform Measurements

 

1.

 indicates waveform measurement.

(Measurement can be taken at the
best accessible location in common
to the indicated point.)

2. Taken with an NTSC signal generator

connected to the antenna terminal.
(NTSC color bar pattern of 8 bars of
EIA colors, 100 IRE white and 7.5
IRE black.)

3. Customer Controls (Picture/Audio

Menu) are set to Normalize. Volume
is set to “MIN”.

4. All video and color waveforms are

taken with a wideband scope and
a probe with low capacitance (10
to 1). Shape and peak altitudes
may vary depending on the type
of Oscilloscope used and its
settings.

5. Ground symbol   shown on

waveform number indicates (Hot)
ground lead connection of the
Oscilloscope.

CAUTION: Incorrect ground
connection of the test equipment will
result in erroneous readings.

3

Medición de Formas de Onda

1. Un símbolo como 

 indica el punto

para medir una señal. (La medición
puede hacerse en el punto con
mayor accesibilidad, siempre que
sea común al indicado.)

2. Se midieron utilizando un generador

con formato NTSC conectado a la
terminal de la antena. (Patrón de 8
Barras de Colores EAI, formato
NTSC de 100 IREs para el Blanco y
7.5 IREs para el Negro.)

3. Los ajustes de usuario de los Menus

PICTURE y AUDIO se normalizaron.
Posteriormente el nivel de volumen
se ajusta al mínimo.

4. Las formas de onda de Video y

Color fueron tomadas con un
osciloscopio de banda alta y con

un punta de prueba de baja
capacitancia (10 a 1). La forma y
amplitud de las ondas puede
variar según el tipo de
osciloscopio que se utilice y sus
características.

5. El símbolo de tierra   que aparece

junto al número de la forma de
onda, indica que se utiliza
conexión a Tierra Caliente en el
extremo negativo de la punta de
prueba.

PRECAUCION: Si no se utiliza la

conexión a la tierra adecuada, se
obtendrán mediciones equivocadas
y podría dañar el equipo de
medición.

3

B

E

C

CHIP TRANSISTOR 
LEAD DESIGNATION

B

E

C

IDENTIFICACIÓN DE TERMINALES
PARA TRANSISTORES EN 

CHIP

IMPORTANT SAFETY NOTICE

 

THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL FEATURES
THAT ARE IMPORTANT FOR PROTECTION FROM X-RADIATION, FIRE
AND ELECTRICAL SHOCK HAZARDS.  WHEN SERVICING IT IS
ESSENTIAL THAT ONLY MANUFACTURERS SPECIFIED PARTS BE
USED FOR THE CRITICAL COMPONENTS DESIGNATED WITH A 

 IN

THE SCHEMATIC.

NOTA DE SEGURIDAD

LOS DIAGRAMAS ELÉCTRICOS INCLUYEN CARACTERÍSTICAS
ESPECIALES MUY IMPORTANTES PARA LA PROTECCIÓN
CONTRA RAYOS-X, QUEMADURAS Y DESCARGAS
ELÉCTRICAS. CUANDO SE DE SERVICIO ES IMPORTANTE
USAR PARA REEMPLAZO DE COMPONENTES CRITICOS,
SOLO PARTES ESPECIFICADAS POR EL FABRICANTES. LOS
COMPONENTES CRITICOS ESTAN SEÑALADOS EN LOS
DIAGRAMAS POR EL SIMBOLO

 

.

Содержание CT13R32E - 13" COLOR TV

Страница 1: ...in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this Service Manual by anyone else could result in serious injury or death ORDER NO MTNC010412C1 B1 This Service manual is issued as a service guide for the models of the NA7D family lis...

Страница 2: ...ner Note Three additional indicators appear on screen One is the five digit usage in hours and the other two are four digits for V Chip Main and Child ratings Indicators are hexadecimal numbers 8 Press the Power Button on the Remote Control to select one of six Service Adjustment Modes 1 B Service VCJ SUB DATA adjustments 2 C Service VCJ CUT OFF adjustments 3 P Service VCJ adjustments 4 S Service ...

Страница 3: ...ctory preset 88 CD ACL REF factory preset 74 CE ACL REF factory preset 64 CF ACL REF factory preset 48 C10 ACL REF factory preset 40 C11 ACL REF factory preset 31 C12 ACL REF factory preset 20 C13 ACL COEF factory preset 124 C14 ACL COEF factory preset 117 1 Press Channel Up Down on the Remote Control to select one of the available Service Adjustments a in Fig 14 Note Write Down the original value...

Страница 4: ...actory preset 0 S4 TVY DELAY factory preset 0 S5 GAMMA FOLDING POINT factory preset 13 S6 VIDEO Y DELAY factory preset 0 S7 VIDEO C DELAY factory preset 0 S8 COMB BPF factory preset 0 S9 COMB 2D factory preset 1 SA COLOR KILLER LEVEL factory preset 0 SB KILLER THRESHOLD factory preset 0 SC ACC SW factory preset 0 SD ACC AMP OFF1 factory preset 100 SE ACC AMP OFF2 factory preset 0 SF ACC AMP ON fac...

Страница 5: ...tory preset 1 PC THRESHOLD OFF2 EFFECT OFF factory preset 30 PD THRESHOLD F3 factory preset 80 PE THRESHOLD F3 factory preset 1 PF THRESHOLD OFF3 EFFECT OFF factory preset 21 P10 THRESHOLD ON1 factory preset 37 P11 THRESHOLD ON2 factory preset 33 P12 THRESHOLD ON3 factory preset 25 P13 CURVE1 factory preset 3 P14 CURVE2 factory preset 3 P15 CURVE3 factory preset 3 P16 RATIO1 factory preset 0 P17 R...

Страница 6: ...eck Mode Helpful Hints Entering Service Mode Back Open Method 1 While the Receiver is ON and operating in Normal Mode momentarily short test point FA1 TP8 to Cold Ground FA2 TP3 A Board The Receiver enters the Aging Mode Yellow letters CHK appear in the upper left corner of the CRT The Volume Up Down will adjust rapidly 2 Simultaneously press the Action and the Volume Up buttons on the Receiver Co...

Страница 7: ...t to nominal level SERVICE MODE CHK turns red Volume Up Down operate normally Custumer Controls are set to nominal level SUB DATA ADJUSTMENTS B ITEMS QUICK ENTRY TO SERVICE MODE Select CABLE Mode Set SLEEP time for 30 60 or 90 Min Tune to Channel 124 Adjust Volume to minimum Press VOL DOWN On Receiver EXIT EXIT N Y N Y C ON REMOTE RECALL Press Action and Power on the Receiver simultaneously for at...

Страница 8: ...SELECT ADJUSTMENT ON REMOTE TO ADJUST THE LEVEL CH VOL VOL Adj needed N Y POWER ON REMOTE EXIT C N IMPORTANT Always Exit the Service Mode Following Adjustments Press Action and Power on the Receiver simultaneously for at least 2 seconds Note Only applicable settings for the Receiver serviced will be available ON REMOTE CONTROL TO SELECT ADJUSTMENT ON REMOTE TO ADJUST THE LEVEL CH VOL VOL B ...

Страница 9: ...s de parte de los componentes y sus valores en la lista de partes La medición de los voltajes se hizo con un Voltímetro Digital Notes Check Parts List for most recent component values and part numbers Obtain voltages with a digital multimeter The board layouts were modified to enhance and display traces otherwise hidden by a mask Q354 3 90 6 54 2 87 Q355 3 57 6 50 2 94 Q356 3 48 6 33 2 90 B C E Q3...

Страница 10: ... 40 A BOARD SCHEMATIC LEFT PORTION DIAGRAMA ELÉCTRICO TARJETA A SECCIÓN IZQUIERDA A BOARD TARJETA A CT 13R32E CE CT 13R42E CE ...

Страница 11: ... SCHEMATIC RIGHT PORTION DIAGRAMA ELÉCTRICO TARJETA A SECCIÓN DERECHA A BOARD TARJETA A CT 13R32E CE CT 13R42E CE B E C CHIP TRANSISTOR LEAD DESIGNATION B E C IDENTIFICACIÓN DE TERMINALES PARA TRANSISTORES EN CHIP ...

Страница 12: ... 42 A BOARD SCHEMATIC LEFT PORTION DIAGRAMA ELÉCTRICO TARJETA A SECCIÓN IZQUIERDA A BOARD TARJETA A CT 13R52DE ...

Страница 13: ...A BOARD SCHEMATIC RIGHT PORTION DIAGRAMA ELÉCTRICO TARJETA A SECCIÓN DERECHA A BOARD TARJETA A CT 13R52DE B E C CHIP TRANSISTOR LEAD DESIGNATION B E C IDENTIFICACIÓN DE TERMINALES PARA TRANSISTORES EN CHIP ...

Страница 14: ... 13 8 18 8 66 4 10 4 15 GND 3 92 3 99 24 32 1 79 n c GND 14 01 24 67 IC551 1 2 3 12 00 8 95 GND IC552 1 2 3 12 01 GND 5 01 IC005 1 2 3 4 5 6 5 01 GND n c 3 26 GND 5 01 IC006 1 2 3 5 00 4 98 GND IC003 1 2 3 4 97 GND 4 98 IC553 1 2 3 8 96 GND 8 91 IC801 1 2 3 4 5 187 00 0 00 GND 29 90 3 00 IC050 1 2 3 4 5 6 7 8 9 10 11 12 13 14 2 59 3 20 3 21 2 69 0 00 0 00 GND 2 67 3 21 n c n c n c 0 00 4 99 IC2302...

Страница 15: ... 13 8 18 8 66 4 10 4 15 GND 3 92 3 99 24 32 1 79 n c GND 14 01 24 67 IC551 1 2 3 12 00 8 95 GND IC552 1 2 3 12 01 GND 5 01 IC005 1 2 3 4 5 6 5 01 GND n c 3 26 GND 5 01 IC006 1 2 3 5 00 4 98 GND IC003 1 2 3 4 97 GND 4 98 IC553 1 2 3 8 96 GND 8 91 IC801 1 2 3 4 5 187 00 0 00 GND 29 90 3 00 IC050 1 2 3 4 5 6 7 8 9 10 11 12 13 14 2 59 3 20 3 21 2 69 0 00 0 00 GND 2 67 3 21 n c n c n c 0 00 4 99 IC2302...

Страница 16: ...ir una señal La medición puede hacerse en el punto con mayor accesibilidad siempre que sea común al indicado 2 Se midieron utilizando un generador con formato NTSC conectado a la terminal de la antena Patrón de 8 Barras de Colores EAI formato NTSC de 100 IREs para el Blanco y 7 5 IREs para el Negro 3 Los ajustes de usuario de los Menus PICTURE y AUDIO se normalizaron Posteriormente el nivel de vol...

Страница 17: ...IMPRESO Y VOLTAJES TARJETA P P BOARD TARJETA P CT 13R52DE IC851 1 2 3 4 5 6 7 8 9 10 11 12 0 00 n c 0 00 0 00 GND 0 00 GND GND GND 0 00 0 00 0 00 Q860 7 94 0 00 6 18 B C E Q851 0 00 0 00 GND K A G Q861 GND 180 00 GND Receiver is in AC Mode Receptor en la modalidad AC ...

Страница 18: ...CTORY PRESET C13 ACL COEFF N A 124 FACTORY PRESET Mode Service Adjustment Adjustment Range Def Val Original Value New Value Cut Off Adjustments Cont C14 ACL COEFF N A 117 FACTORY PRESET C15 ACL COEFF N A 94 FACTORY PRESET C16 ACL COEFF N A 80 FACTORY PRESET C17 ACL WAIT N A 2 FACTORY PRESET C18 ACL THRESHOLD N A 9 FACTORY PRESET C19 MACROVISION N A 3 FACTORY PRESET C1A OSD SELECT N A 1 FACTORY PRE...

Страница 19: ... F1 N A 129 FACTORY PRESET P8 THRESHOLD F1 N A 1 FACTORY PRESET P9 THRESHOLD OFF1 EFFECT OFF N A 35 FACTORY PRESET PA THRESHOLD F2 N A 99 FACTORY PRESET PB THRESHOLD F2 N A 1 FACTORY PRESET PC THRESHOLD OFF2 EFFECT OFF N A 30 FACTORY PRESET Mode Service Adjustment Adjustment Range Def Val Original Value New Value VCJ Adjustments Cont Black Expansion PD THRESHOLD F3 N A 80 FACTORY PRESET PE THRESHO...

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