TX-32PK3 — Panasonic TV Service Manual (repair manual)

Model
TX-32PK3
Pages
39
Size
10.62 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / COLOUR TELEVISION
File
tx-32pk3.pdf
Date

View Panasonic TX-32PK3 Service Manual online

Colour Television
TX-32PK3
EURO-4 Chassis
SPECIFICATIONS
Power Source:
220-240V a.c., 50Hz
Power Consumption:
106W
Stand-by Power
Consumption:
1.4W
Aerial Impedance:
75
 unbalanced, Coaxial Type
Receiving System:
PAL I, PAL-525/60
M.NTSC
NTSC (AV only)
Receiving Channels:
UHF E21-E69
Intermediate Frequency:
Video/Audio
Video
39,5MHz
Audio
33,5MHz
32,95MHz (NICAM)
Colour
35,07MHz
Terminals:
Audio Monitor Out
Audio (RCAx2) 500mV rms 1k
AV1 IN
Video (21 pin) 1V p-p 75
Audio (21 pin) 500mV rms 10k
RGB (21 pin)
AV1 OUT
Video (21 pin) 1V p-p 75
Audio (21 pin) 500mV rms 1k
AV2 IN
Video (21 pin)  1V p-p 75
Audio (21 pin)  500mV rms 10k
S-Video IN
Y: 1V p-p 75
(21-pin)
C:0,3V p-p 75
AV2 OUT
Video (21 pin)  1V p-p 75
Audio (21 pin) 500mV rms 1k
Selectable output (21 pin)
AV3 IN
S-Video IN
Y: 1V p-p 75
(4-pin)
C: 0,3V p-p 75
Audio (RCAx2)
500mV rms 10k
Video (RCAx1) 1V p-p 75
High Voltage:
31.5kV 
±
 1kV
Picture Tube:
W76EKW10X21
76cm
Audio Output:
Front Left/Right 
2 x 15W
8
 Impedance
Headphones:
8
 Impedance
3,5mm
Accessories
supplied :
Dimensions:
Height:
558mm
Width:
812mm
Depth:
572mm
Net weight:
57kg
Specifications are subject to change without notice.
Weights and dimensions shown are approximate.
NOTE: This Service Manual should be used in conjunction with
the EURO-4 Technical guide.
ORDER No. SM-001009
WILLOUGHBY ROAD,
BRACKNELL,
BERKS.,
RG12 8FT.
CONTENTS
SAFETY PRECAUTIONS..........................................................................................................................................................2
SERVICE HINTS .......................................................................................................................................................................3
SERVICE POSITION.................................................................................................................................................................4
ADJUSTMENT PROCEDURE AND FACTORY SETTINGS .....................................................................................................5
WAVEFORM PATTERN TABLE ...............................................................................................................................................6
ALIGNMENT SETTINGS...........................................................................................................................................................7
BLOCK DIAGRAMS ..................................................................................................................................................................8
PARTS LOCATION .................................................................................................................................................................12
REPLACEMENT PARTS LIST ................................................................................................................................................13
SCHEMATIC DIAGRAMS .......................................................................................................................................................24
CONDUCTOR VIEWS.............................................................................................................................................................28
SAFETY PRECAUTIONS
GENERAL GUIDE LINES
1.  It is advisable to insert an isolation transformer in the
a.c. supply before servicing a hot chassis.
2.  When servicing, observe the original lead dress in the
high voltage circuits. If a short circuit is found, replace
all parts that have been overheated or damaged by
the short circuit.
3.  After servicing, see that all the protective devices
such as insulation barriers, insulation papers, shields
and isolation R-C combinations are correctly
installed.
4.  When the receiver is not being used for a long period
of time, unplug the power cord from the a.c. outlet.
5.  Potentials as high as 32.5kV are present when this
receiver is in operation. Operation of the receiver
without the rear cover involves the danger of a shock
hazard from the receiver power supply. Servicing
should not be attempted by anyone who is not
familiar with the precautions necessary when working
on high voltage equipment. Always discharge the
anode of the tube.
6.  After servicing make the following leakage current
checks to prevent the customer from being exposed
to shock hazard.
LEAKAGE CURRENT COLD CHECK
1.  Unplug the a.c. cord and connect a jumper between
the two prongs of the plug.
2.  Turn on the receiver’s power switch.
3.  Measure the resistance value with an ohmmeter,
between the jumpered a.c. plug and each exposed
metallic cabinet part on the receiver, such as screw
heads, aerials, connectors, control shafts etc. When
the exposed metallic part has a return path to the
chassis, the reading should be between 4M ohm and
20M ohm. When the exposed metal does not have a
return path to the chassis, the reading must be
infinite.
LEAKAGE CURRENT HOT CHECK
1.  Plug the a.c. cord directly into the a.c. outlet. Do not
use an isolation transformer for this check.
2. Connect 
2k
 10W resistor in series with an
exposed metallic part on the receiver and an earth,
such as a water pipe.
3.  Use an a.c. voltmeter with high impedance to
measure the potential across the resistor.
4.  Check each exposed metallic part and check the
voltage at each point.
5.  Reverse the a.c. plug at the outlet and repeat each of
the above measurements.
6.  The potential at any point should not exceed
1.4V rms. In case a measurement is outside the limits
specified, there is a possibility of a shock hazard, and
the receiver should be repaired and rechecked before
it is returned to the customer.
X-RADIATION WARNING
1.  The potential sources of X-Radiation in TV sets are
the high voltage section and the picture tube.
2.  When using a picture tube test jig for service, ensure
that the jig is capable of handling 32.5kV without
causing X-Radiation.
NOTE: It is important to use an accurate periodically
calibrated high voltage meter.
1.  Set the brightness to minimum.
2.  Measure the high voltage. The meter should indicate.
31.5kV
±
1kV.
If the meter indication is out of tolerance, immediate
service and correction is required to prevent the
possibility of premature component failure.
3.  To prevent any X-Radiation possibility, it is essential
to use the specified tube.
HOT CHECK CIRCUIT
a.c. VOLTMETER
WATER PIPE
(EARTH)
TO INSTRUMENT’S EXPOSED
METALLIC PARTS
Fig. 1.
2k
 10 Watts
2
SERVICE HINTS
How to remove the rear cover
1. Remove the 10 screws as shown in Fig.2.
LOCATION OF CONTROLS
3
Fig.2.
SCREWS
SCREWS
M-Board
Focus
Screen
Fig.3.
Y-Board
P-Board
E-Board
H-Board
Z-Board
Q-Board
HOW TO MOVE THE CHASSIS INTO SERVICE POSITION
1. Remove the bead clamper from the mains lead and affix, using back cover screw, into top right-hand cabinet rib (A),
shown in Fig.4.
2. Remove 2 screws (B), as shown in Fig.5., and remove speaker assembly.
3. Hold and lift the rear of the chassis and gently pull the chassis toward you, as shown in Fig.4.
4. Release the respective wiring clips and rotate the chassis vertically through 90
°
, anti-clockwise.
5. Locate the base of the chassis frame into location (C), shown in Fig.6. / Fig.8.
6. Clip the chassis frame onto the bead clamper, shown in Fig.6. / Fig.7.
7. After servicing replace the bead clamper and speaker, and ensure all wiring is returned to its original position before 
returning the receiver to the customer.
4
(B)
Fig.4.
Fig.5.
Fig.7.
Fig.8.
Fig.6.
(C)
Page of 39
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Here you can view online or download Panasonic TX-32PK3 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Panasonic TX-32PK3 TV. Information contained in Panasonic TX-32PK3 service manual (repair manual) typically includes:

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  • Schematics, wiring and block diagrams.
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