Panasonic PT56SX30B - 56" PROJECTION TV Panduan Servis - Halaman 5
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Halaman Cetak
A
B
1
2
3
4
Voltage Measurements
1.
1.
Voltage measurement:
-
Voltage readings are nominal
2.
and may vary ±10% on active
-
AC input to the Receiver is 120V.
devices.
Some
voltage
NTSC (HD, 1125i & 525P when
3.
reading will vary with signal
applicable) signal generator is
4.
strength and picture content.
connected to the antenna of the
Receiver. (Color bar pattern of
-
Supply voltages are nominal.
5.
100 IRE white and 7.5 IRE black.)
2.
Ground
symbol
indicates
5
-
All Picture and Audio adjustments
ground lead connection of meter.
are set to Normalize.
Incorrect ground connection will
TV ANT/CABLE - (Set-Up Menu)
result in erroneous readings.
in TV/ANT Mode
CAUTION:
Incorrect
ground
Volume - Min.
connection of the test equipment
TV/Video SW - TV position
will result in erroneous readings.
Audio Mode - Stereo
For BOARDS LAYOUT, ICs and TRANSISTORS VOLTAGES
and
MTNC000211C1 (PT-61D30B/CB)
C
A-Board Schematic, Left Portion, PT-56D30B/CB, PT-56SX30B/CB
Diagrama Eléctrico Tarjeta A, Sección Izquierda, PT-56D30B/CB, PT-56SX30B/CB
Schematic Notes
Resistors are carbon 1/4W unless
6.
(BOLD LINE) indicates
Waveform Measurements
3
noted otherwise.
the route of B+ supply.
1.
indicates waveform measurement.
Capacitors are ceramic 50V unless
7.
The
schematic
diagrams
are
(Measurement can be taken at the
noted otherwise.
current at the time of printing and
best accessible location in common
Coil value notes is inductance in µH.
are subject to change without
to the indicated point.)
Test point indicated by
; Test point
notice.
2.
Taken
with
an
but no pin .
8.
Ground symbol
indicates HOT
generator connected to the antenna
Components indicated with
are
GROUND CONNECTION;
terminal. (NTSC color bar pattern of
critical parts and replacement should
indicates COLD GROUND.
8 bars of EIA colors, 100 IRE white
be made with manufacture specified
NOTE: All other component symbols
and 7.5 IRE black.)
replacement parts only.
are used for engineering
3.
Customer Controls (Picture/Audio
design purposes.
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
IMPORTANT
depending
on
the
Oscilloscope used and its settings.
WAVEFORMS
refer
to
Main
Service
Manual
D
E
NOTA DE SEGURIDAD
LOS DIAGRAMAS ELÉCTRICOS INCLUYEN CARACTERÍSTICAS
5.
Ground symbol
shown on
ESPECIALES MUY IMPORTANTES PARA LA PROTECCIÓN
waveform number indicates (Hot)
CONTRA
RAYOS-X,
QUEMADURAS
Y
ground lead connection of the
ELÉCTRICAS. CUANDO SE DE SERVICIO ES IMPORTANTE
Oscilloscope.
USAR PARA REEMPLAZO DE COMPONENTES CRITICOS,
NTSC
signal
CAUTION:
Incorrect
ground
SOLO PARTES ESPECIFICADAS POR EL FABRICANTES. LOS
connection of the test equipment will
COMPONENTES CRITICOS ESTAN SEÑALADOS EN LOS
result in erroneous readings.
DIAGRAMAS POR EL SIMBOLO
.
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
THE SCHEMATIC.
type
of
F
G
Boards Designation
Indice de Tarjetas
• A-Board - Main Chassis
• Tarjeta A- Chasis Principal
• B-Board - Power Supply
• Tarjeta B- Fuente de Alimentación
• C-Board - Convergence
• Tarjeta C- Convergencia
DESCARGAS
• D-Board - Protection Circuit
• Tarjeta D- Circuito de Protección
• F-Board - Digital 3-line Comb Filter
• Tarjeta F- Filtro Digital
• F2-Board - 3D YC Comb Filter
• Tarjeta F2- Filtro Comb Digital de YC
• G-Board - Front AV Connections
• Tarjeta G- Entradas Frontales de AV
• K-Board - Customer Controls
• Tarjeta K- Ajustes de Usuario
• LB/LG/LR-Board - Blue, Green & Red
• Tarjetas LB/LG/LR - Tarjetas para los
CRT Boards
• N-Board - 2nd Tuner
• Tarjeta N- 2do Sintonizador
IN
• R-Board - Remote Sensor
• Tarjeta R- Sensor del Control Remoto
• T-Board - Line Filter
• Tarjeta T- Filtro de Alimentación
• X-Board - AV Inputs
• Tarjeta X- Entradas de Audio y Video
• Y-Board - PIP Processing
• Tarjeta Y- PIP (Imagen en Imagen)
H
TRC Rojo, Azul y Verde.