Panasonic CT 30WX52 User manual

Order No. ITD0205011C1
B5
Wide Screen TV
CT-30WX52 / CT-34WX52
DX3PW Chassis
SPECIFICATIONS
Specifications
Power Source AC120V, 60 Hz
Power Consumption:
Average use 170W (Maximum Current:3.6A)
Stand-by condition:0.2W
CRT
CT-30WX52:30 inch, 16:9 aspect ratio
CT-34WX52:34 inch, 16:9 aspect ratio
Screen size
CT-30WX52:
25.95” (659.1mm)(W)x14.59” (370.7mm)(H)x29.77”(756.2mm)(D)
CT-34WX52:
29.36” (745.9mm)(W)x16.5” (419.5mm)(H)x33.68”(855.7mm)(D)
Dimension (WxDxH)
CT-30WX52:
32.6” (827mm)x22.8” (579mm)x21.1” (535mm)
CT-34WX52:
36.4” (926mm)x30.6” (651mm)x23.1” (584mm)
Weight (Mass)
CT-30WX52:126 lbs (57kg) Net
CT-34WX52:172 lbs (78kg) Net
ANODE Voltage 33.0 ±1.0kV at zero beam current
Channel Capability-181
VHF-12:UHF-56:Cable-125
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Sound
Speaker 4 Speakers
Audio out 30W (15W+15W) (10% THD)
Headphones M3 (3.5mm) Jack×1
FEATURES
Two screen display function 3D Y/C FILTER
BBE LINEAR PIP
CLOSED CAPTION V-Chip
Accessories Supplied Remote conrtol Transmitter
EUR7603Z70
R6 (AA) Battery ×2 Size
Operating Conditions
Temperature:34°F -104°F (0° -40°C)
Humidity:20% -80% (non-condensing)
Connection terminals
AV INPUT 1-4VIDEO 1.0 Vp-p (75 )/ (Phono
Jack Type) / S-VIDEO Y:1.0Vp-
p (75 )/ (Mini DIN 4-pin) C:
0.286 Vp-p (75 )/ AUDIO L-R
0.5Vrms / (PhonoJack Type x 2)
AV PROG OUT VIDEO 1.0Vp-p (75 )
(Phono Jack Type)
AUDIO L-R 0.5 Vrms
(Phono Jack Type x2)
TO AUDIO AMP AUDIO L-R 0.5 Vrms / (Phono
Jack type x2)
COMPONENT VIDEO
INPUT1-2Y 1.0 Vp-p (including
synchronization) / PB/PR±0.35
Vp-p/ AUDIO L-R 0.5 Vrms /
(Phono Jack Type x 2)
Design and Specifications are subject to change without notice.
Weight and Dimensions shown are approximate.
2002 Matsushita Electric Industrial Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.
1. Safety Precautions
1.1. General Guidelines
1. It is advisable to insert an isolation transformer in the AC power
line before servicing a hot chassis.
2. When servicing, observe the original lead dress, especially the
lead dress in the high voltage circuits. If a short circuit is found,
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replace all parts which have been overheated or damaged by the
short circuit.
3. After servicing, see to it that all the protective devices such as
insulation barriers, insulation papers, shields, and isolation R-C
combinations, are properly installed.
4. Before switching the power on, measure the resistance between B
+line and cold side chassis ground. Connect the "-" side of an
ohmmeter to the B+line, and the "+" side to chassis ground. Each
line must have moreresistance value than the specified one as
follows:
B+line SPECIFICATION
MAN 12V (TPA6) 12.0V±0.5V
MAIN 9V (TPA7) 9.0V±0.5V
MAIN 5V (TPA8) 5.0V±0.3V
GC 2.5V (TPA9) 2.5V±0.2V
STBY 3.3V (TPA16) 3.3V±0.2V
STBY 7V (TPA9) 7.0V±0.5V
+B2 (TPD144) 144.0V±1.5V
25V (TPD250) 27.5V±2.0V
15V (TPD150) 15.7V±1.5V
-15V (TPD151) -16.0V±1.5V
SOUND+(TPD160) 16.5V±1.0V
SOUND-(TPD161) -16.5V±1.0V
220V (TPD7) 215V±5.0V
5. When the set is not used for a long period of time, unplug the AC
power cord plug from the AC line outlet.
6. High voltage points, as high as 37.2 ±1.0 kV, are present when the
set is in operation. Operating the set without the rear cover
involves in a dangerous electrical shock from the set power
supply. Servicing must not be attempted by anyonewho is not
thoroughly familiar with the necessary precautions when working
on high voltage equipment. Always discharge the anode of the
picture tube to chassis ground before handling the picture tube.
7. After servicing, make the following leakage current checks to
prevent the customer from dangerous electrical shock.
1.2. Leakage Current Cold Check
1. Unplug the AC power cord and short between the two prongs of
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the AC plug with a jumper wire.
2. Set the power switch of this set to ON position.
3. Measure the resistance value with an ohmmeter between the
shorted AC plug and each exposed metallic part of the set cabinet
such as screwheads, connectors, and control shafts. When the
exposed metallic part has a return path to the chassis,the reading
should be more than 1 M ./ When the exposed metal part does
not have a return path to the chassis, the reading must be infinity.
1.3. Leakage Current Hot Check (See Fig.1)
1. Plug the AC power cord directly into the AC line outlet. Do not use
an isolation transformer for this check.
2. Connect a 1.5k ,10W resistor, in parallel with a 0.15 F capacitor
between each exposed metallic part of the set and an earth ground
such as a water pipe.
3. Use a high impedance AC voltage meter to measure the voltage
across the resistor.
4. Measure the voltage at each exposed metallic part.
5. Reverse the AC plug inserting direction at the AC line outlet and
repeat each of the above measurements.
6. The voltage at any point must be less than 0.75Vrms.
7. A leakage current tester (Symptom Model 229 or the equivalent)
may be used to make the hot checks. In this case, the current
must be less than 500 A.
8. If the reading is more than the above value, the set must be
repaired and rechecked before it is returned to the customer
because of a possibility of an electrical shock.
Fig. 1
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1.4. X-Radiation
Warning:
1. The potential sources of X-Radiation in the monitor set are the high
voltage section and picture tube.
2. When using a picture tube test jig for service, make sure that jig is
capable of handling 37.2kV without causing X-Radiation.
3. For continued X-radiation protection, in case that at least one of the
components listed below is replaced, follow the adjustment
procedure of the high voltage circuit. Precise adjustment is
necessary for Serviceman Mode to protect X-Radiation. Refer to
"High Voltage and X-Radiation Protective Circuit Adjustment
section".
T551, IC1501, IC4002, D512, D1503, R520, R521, R522, R809, R810,
R1506, R4081, R4084, R1505, R1515 C481, C528, C1506, C1507,
RL801
1.5. Hold Down or Safety Circuit Information
To monitor the high voltage, the positive DC voltage from the cathode D512 isapplied through
R1507 and other resistorsto pin 3 of IC1501, which isthe input terminal of the X-ray Protection
Circuit. The voltage at pin 2 of IC1501 is5.90 ±0.03voltage. Under normal conditionsthisvoltage is
insufficient to activate the X-ray Protection Circuit.
If the voltage at pin 3 of IC1501 increasesover the voltage at pin 2 of IC1501 increasesand causes
the X-ray Protection to activate. Then it causesthe shut down works.
In the processdescribed above, the voltage at pin 3 of IC1501 iscompared with the voltage at pin
2 of IC1501.if excessive beam current isdrawn, the voltage at oin 3 of IC1501 increases. When the
voltage at pin 3 of IC1501 over the voltage atpin 2 of IC1501, the voltage at pin 1 of IC1501
becomes"high" and feedsinto pin 45 of micro-controller IC4002 through R4084.The micro-
controller then turnsoff Q802, causesthe AC power relay RL801 to unlatch and turnsoff the
receiver.
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2. Service Hints
2.1. Before servicing
1. Remove the screws fixing the rear cover (13 pcs.:Refer to Fig. 1).
Fig. 1 Position of the screwsfixing the rear cover
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2. Remove the rear cover by raising the chassis a little and pulling to
the rear .(Refer to Fig. 2.)
- At this time, disconnect the coupler P11, the ring clamper, etc.
as required to facilitate the pulling out of the chassis.
- After completion of servicing, any disconnected couplers and
clampers must be restored to their original condition.
Fig. 2 How to tilt the chassis
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2.2. In regard to inspection of A-Board and D-Board
- The A-Board and D-Board can be inspected from the pattern side
when the chassis is pulled out and tilted up. (Refer to Fig. 3.)
- At this time, disconnect the coupler, the clamp, etc. as required to
facilitate tilting of the chassis.
- When tilting the chassis, pay sufficient attention to the L-Board at
the neck of the picture tube
Fig. 3 Inspection of the A-Board and D-Board
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2.3. Service position for DG-Board
Note:
Extension cable kit for DG-Board issupplied asservice fixturesand tools.
PartsNo. TZSC07038
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3. About lead free solder (PbF)
Note:Lead islisted as(Pb) in the periodic table of elements.
In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.
The Lead Free Solder used in our manufacturing processand discussed below is(Sn+Ag+Cu).
That isTin (Sn), Silver (Ag) and (Cu) although other typesare available.
Thismodel usesPb Free solder in it’smanufacture due to environmental conservation issues.
For service and repair work, we’d suggest the use of Pb free solder aswell, although Pb solder
may be used.
PCBsmanufactured using lead free solder will have the PbF within a leaf Symbol
stamped on the back of PCB.
Caution
- Pb free solder has a higher melting point than standard solder.
Typically the melting point is 50 ~ 70 ~F (30~40~C) higher. Please
use a high temperature soldering iron and set it to 700 ±20 ~F (370 ±
10 ~C).
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