TX-32PK25D, TX-32PK25F, TX-32PK25P - Panasonic TV Service Manual (repair manual)

tx-32pk25d, tx-32pk25f, tx-32pk25p service manual
Model
TX-32PK25D TX-32PK25F TX-32PK25P
Pages
38
Size
10.85 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / EURO-4H CHASSIS
File
tx-32pk25d-tx-32pk25f-tx-32pk25p.pdf
Date

Read Panasonic TX-32PK25D / TX-32PK25F / TX-32PK25P Service Manual online

Colour Television
TX-32PK25D
TX-32PK25F
                                                                                                                          
TX-32PK25P
EURO-4H Chassis
SPECIFICATIONS
Power Source:
220-240V a.c., 50Hz
Power Consumption:
140W
Stand-by Power
Consumption:
1.4W
Aerial Impedance:
75
 unbalanced, Coaxial Type
Receiving System:
PAL-I, B/G, H, D/K, PAL-525/60
SECAM L/L’, B/G, D/K
M.NTSC
NTSC (AV only)
Receiving Channels:
VHF E2-E12
VHF H1-H2 (ITALY)
VHF A-H (ITALY)
VHF R1-R2
VHF R3-R5
VHF R6-R12
UHF E21-E69
CATV (S01-S05)
CATV S1-S10 (M1-M10)
CATV S11-S20 (U1-U10)
CATV S21-S41 (HYPERBAND)
Intermediate Frequency:
Video/Audio
Video
38,9MHz, 34MHz
Audio
32,9MHz, 33,16MHz, 33,4MHz
40,4MHz, 32,4MHz (A2 Stereo)
33,05MHz, 34,05MHz (NICAM)
32,66MHz, 32,4MHz (Czech Stereo)
Colour
34,47MHz (PAL)
34,5MHz, 34,65MHz (SECAM)
Video/Audio 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:
32kV 
±
 1kV
Picture Tube:
W76EKW10X71 76cm
Audio Output:
2 x 15W (Music Power)
8
 Impedance
Headphones:
8
 Impedance
3,5mm
Accessories
supplied :
Remote Control
2 x R6 (UM3) Batteries
Dimensions:
Height:
503mm
Width:
720mm
Depth:
527mm
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-4H Technical guide.
ORDER No. SM-01016
CONTENTS
SAFETY PRECAUTIONS..........................................................................................................................................................2
SERVICE HINTS .......................................................................................................................................................................3
ADJUSTMENT PROCEDURE AND FACTORY SETTINGS .....................................................................................................4
WAVEFORM PATTERN TABLE ...............................................................................................................................................5
ALIGNMENT SETTINGS...........................................................................................................................................................6
BLOCK DIAGRAMS ..................................................................................................................................................................7
PARTS LOCATION .................................................................................................................................................................11
REPLACEMENT PARTS LIST ................................................................................................................................................12
SCHEMATIC DIAGRAMS .......................................................................................................................................................24
CONDUCTOR VIEWS.............................................................................................................................................................31
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 33kV 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
1,4Vrms. 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 33kV 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.
32kV ± 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.
M-Board
Y-Board
E-Board
F-Board
Focus
Screen
P-Board
Z-Board
E-Board
D-Board
M-Board
P-Board
SCREWS
SCREWS
ADJUSTMENT PROCEDURE
Item / Preparation
Adjustments
+B SET-UP
1. Receive 
Greyscale 
signal.
2.  Set the controls :-
Brightness
Minimum
Contrast
Minimum
Volume
Minimum
1.  Set the +B voltage up as follows:-
Adjust R811 so that B2 shows 148V±1V.
2.  Confirm the following voltages.
B9
5
±
0,25V B10
5
±
0,25V
B5
12
±
0,5V
B11
33
±
1,5V
B4
15
±
1V
B7
8
±
0,5V
B12 26
±
2V
B8
6
±
1V
B3
36
±
1,5V
B13
13
±
1V
B1
205
±
10V
B14
14
±
1V
CUT OFF / Ug2 Test
1. Receive 
Greyscale 
signal.
2.  Degauss the tube externally.
3.  Set the TV into Service Mode 1.
4.  Select Cut off mode.
To adjust Cutoff connect an oscilloscope to the Blue
cathode. Press "STR" and adjust "cutoff" value using the
"Yellow" and "Blue" buttons until the black level is 160V±5V,
press "STR" to store the value. Remove the oscilloscope.
Select Ug2 adjustment and adjust the screen VR until the
display shows "O.K."
FACTORY SETTINGS
Self-check is used to automatically check the bus lines and hexadecimal code of the TV set. To get in to Self-Check mode
press the down (-/v) button on the customer controls at the front of the TV set, at the same time pressing the STATUS button
on the remote control.
If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".
4
 To exit Self Check, switch off the TV set at the power button.
PCB
O.K.
CAB
O.K.
TX- 32PK25F
OPTION1 39
OPTION2 7D
OPTION3 0F
OPTION4 40
OPTION5 FD
OPTION6 E5
VPC
O.K.
CIP
O.K.
SRC
O.K.
DDP
O.K.
TUN
O.K.
E2
O.K.
MSP
O.K.
DPL
- -
TX- 32PK25P
OPTION1 3D
OPTION2 7D
OPTION3 0F
OPTION4 40
OPTION5 FD
OPTION6 E1
TX- 32PK25D
OPTION1 39
OPTION2 7D
OPTION3 0F
OPTION4 40
OPTION5 FF
OPTION6 E5
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Here you can read online and download Panasonic TX-32PK25D / TX-32PK25F / TX-32PK25P Service Manual in PDF. TX-32PK25D / TX-32PK25F / TX-32PK25P service manual will guide through the process and help you recover, restore, fix, disassemble and repair Panasonic TX-32PK25D / TX-32PK25F / TX-32PK25P TV. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.