Panasonic CT 30WX52 User manual

Order No. ITD0205011C1

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

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.

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,

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

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

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.

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

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

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

2.3. Service position for DG-Board

Note:

Extension cable kit for DG-Board issupplied asservice fixturesand tools.

PartsNo. TZSC07038

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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