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Colour Television
TX-32/36PD50D
TX-32/36PD50F
TX-32/36PD50F/P
GP1 Chassis
TX-32/36PD50F/P
GP1 Chassis
SPECIFICATIONS
Power Source:
220-240V a.c., 50Hz
Power Consumption:
145W (32”), 158W (36”)
Stand-by Power
Consumption:
Consumption:
0.5W
Aerial Impedance:
75
Ω
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)
SECAM L/L’, B/G, D/K
M.NTSC
NTSC (AV only)
Receiving Channels:
UHF E21-E68
VHF E2-E12
VHF H1-H2 (ITALY)
VHF A-H (ITALY)
VHF R1-R2
VHF R3-R5
VHF R6-R12
UHF E21-E68
CATV (S01-S05)
CATV S1-S10(M1-M10) CATV S11-S20(U1-U10)
CATV S21-S41(HYPERBAND)
Intermediate Frequency:
Video/Audio
Video
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)
32.95MHz (NICAM)
40.4MHz, 32.4MHz (A2 STEREO)
33.05MHz, 34.05MHz (NICAM)
32.66MHz, 32.4MHz (CZECH STEREO)
32.95MHz (NICAM)
Colour
34.47MHz (PAL)
34.5MHz, 34.65MHz (SECAM)
34.5MHz, 34.65MHz (SECAM)
Terminals:
AV1 IN
AV1 IN
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 10k
Ω
RGB (21 pin)
AV1 OUT
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 1k
Ω
AV2 IN
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 10k
Ω
S-Video IN
Y: 1V p-p 75
Ω
(21-pin)
C: 0.3V p-p 75
Ω
AV2 OUT
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 1k
Ω
Selectable output (21 pin)
AV3 IN
S-Video IN
Y: 1V p-p 75
Ω
(4-pin)
C: 0.3V p-p 75
Ω
Audio (RCAx2)
500mV rms 1Video
Video (RCAx1) 1V p-p 75
Ω
AV4 IN
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 10k
Ω
S-Video IN
Y: 1V p-p 75
Ω
(21-pin)
C: 0.3V p-p 75
Ω
RGB (21 pin)
AV4C
Component
Video In
Component
Video In
Y (RCA x 1)
1V p-p 75
Ω
Pb (RCA x 1)
1V p-p 75
Ω
Pr (RCA x 1)
1V p-p 75
Ω
AV4 OUT
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 1k
Ω
AV5 IN
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 10k
Ω
AV5 OUT
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 10k
Ω
Audio Monitor Out
(RCA x 2)
High Voltage:
32kV
±
1kV
Picture Tube:
W76LXK085X01 76cm
(32”)
W86LXK085X01 86cm
(36”)
Audio Output:
Front Left/Right 2 x 20W
(Music Power)
Subwoofer 24W
8
8
Ω
Impedance
Digital Audio Input
Coaxial / Optical
Headphones:
8
Ω
Impedance
3.5mm
Accessories
supplied :
supplied :
Remote Control
2 x R6 (UM3) Batteries
2 x R6 (UM3) Batteries
Dimensions:
32”
36”
Height:
579mm
644mm
Width:
795mm
897mm
Depth:
533mm
588mm
Net weight:
59kg
82kg
Specifications are subject to change without notice.
Weights and dimensions shown are approximate.
Weights and dimensions shown are approximate.
ORDER No. SM-0401
8
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................................................................................................................................................................. 13
REPLACEMENT PARTS LIST................................................................................................................................................ 14
SCHEMATIC DIAGRAMS ....................................................................................................................................................... 38
CONDUCTOR VIEWS ............................................................................................................................................................ 48
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.
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.
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.
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.
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,
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.
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
a
2k
Ω
10W resistor in series with an
exposed metallic part on the receiver and an earth,
such as a water pipe.
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
specified, there is a possibility of a shock hazard, and
the receiver should be repaired and rechecked before
it is returned to the customer.
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.
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.
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.
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
METALLIC PARTS
Fig. 1.
2k
Ω
Ω
Ω
Ω
10 Watts
2
SERVICE HINTS
How to remove the rear cover
1. Remove the 13 screws as shown in Fig.2.
LOCATION OF CONTROLS
3
Fig.2.
SCREWS
SCREWS
G-Board
Fig.3.
Screen
H-Board
L-Board
Focus
A-Board
D-Board
K-Board
U-Board
DG-Board
DF-Board
ADJUSTMENT PROCEDURE
Item / Preparation
Adjustment/Confirmation
+B SET-UP
4. Receive a Window pattern.
5. Set the controls :-
5. Set the controls :-
Brightness
Minimum
Contrast
Minimum
Volume
Minimum
Confirm the following voltages.
A - Board
A1 Pin3
A - Board
A1 Pin3
7
±
0.2V
A3 Pin10
30
±
0.2V
A1 Pin4
7
±
0.2V
A44 Pin21
5
±
0.5V
A2 Pin6
-15
±
0.2V
A44 Pin11
9
±
0.5V
A2 Pin7
-15
±
0.2V
TPA18
2.5
±
0.5V
A2 Pin8
15
±
0.2V
A1002 Pin1
3.3
±
0.5V
A2 Pin9
15
±
0.2V
A1002 Pin14
2.5
±
0.5V
A3 Pin2
4.5
±
0.2V
A1002 Pin3
5
±
0.5V
A3 Pin4
4.5
±
0.2V
IC2303
8.3
±
0.5V
A3 Pin6
4.5
±
0.2V
RT2 Pin1 7.53
±
0.5V
A2 Pin16
12
±
0.2V RT2 Pin4 7.53
±
0.5V
A1 Pin2
7
±
0.2V
A1 Pin15
40
±
0.2V
A1 Pin16
40
±
0.2V
D – Board
TPD7
TPD7
12
±
2V
TPD8
3.3
±
1V
TPD9
38.17 ±
1V
TPD10
-6.5
±
1V
TPD13
15.5
±
5V
TPD14 -15.5
±
5V
TPD15 144
±
2V
TPD17
30
±
2V
TPD18
6.5
±
1V
D2 PIN6 -15.0
±
5V
TPD35
220.0 ± 10V
CUT OFF
1. Receive a Window pattern.
2. Degauss the tube externally.
3. Set the TV into Service Mode 1.
4. Select Sub brightness mode.
2. Degauss the tube externally.
3. Set the TV into Service Mode 1.
4. Select Sub brightness mode.
To adjust Cutoff connect an oscilloscope to the Blue cathode. Adjust "Cutoff"
value using the "Yellow" and "Blue" buttons until the black level is 170V ± 5V,
press "STR" to store the value. Remove the oscilloscope.
Select Highlight/Lowlight mode press "5" to collapse the screen and adjust the
screen “VR” until the display is just visible, press "5" to return to service mode.
Using the "Yellow" and "Blue" buttons adjust until optimum picture white
balance is achieved, press "STR" to store the value. Select Sub Brightness
mode and adjust until optimum picture brightness is achieved.
value using the "Yellow" and "Blue" buttons until the black level is 170V ± 5V,
press "STR" to store the value. Remove the oscilloscope.
Select Highlight/Lowlight mode press "5" to collapse the screen and adjust the
screen “VR” until the display is just visible, press "5" to return to service mode.
Using the "Yellow" and "Blue" buttons adjust until optimum picture white
balance is achieved, press "STR" to store the value. Select Sub Brightness
mode and adjust until optimum picture brightness is achieved.
SELF CHECK
Self-Check is used to automatically check the bus lines and hexadecimal code of the TV set.
To get into 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, and the screen will show: -
To get into 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, and the screen will show: -
To exit Self-Check, switch off the TV set at the power button.
If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".
4
Factory use only
Sum
:
****
MEM
:
O.K.
GC2M
:
O.K.
GC2P
:
O.K.
GC2S
:
O.K.
GC2V
:
O.K.
EFC
:
O.K.
HAD
:
O.K.
LSYNC
:
O.K.
AVSW
:
O.K.
TUN1
:
O.K.
TUN2
:
- -
DAC1
:
O.K.
DAC2
:
- -
MSP
:
O.K.
DPL
:
- -
DOLBY
:
- -
OPTION 1 :
OPTION 2 :
OPTION 3 :
OPTION 4 :
OPTION 5 :
OPTION 6 :
OPTION 7 :
OPTION 8 :
OPTION 9 :
OPTION 10:
OPTION 11:
OPTION 12:
OPTION 13:
Check :
OPTION 2 :
OPTION 3 :
OPTION 4 :
OPTION 5 :
OPTION 6 :
OPTION 7 :
OPTION 8 :
OPTION 9 :
OPTION 10:
OPTION 11:
OPTION 12:
OPTION 13:
Check :
TX-32/36PD50D
0F
00
00
B9
11
00
00
A0
7F
D0
0E
0E
80
19
40
01
19
40
01
B0
TX-32/36PD50F
0F
00
00
B9
11
00
00
A0
7F
50
0E
80
19
40
01
30
50
0E
80
19
40
01
30
TX-32/36PD50F/P
0F
00
00
B9
11
00
00
A0
7F
50
0E
80
19
40
01
30
50
0E
80
19
40
01
30