Panasonic TC-21P50R Manual de usuario

Picture Tube: A51LSK655X

Type21, 90deflection

High Voltage: 28.5(+0.7, -1.5) kV at zero beam current

Audio Output:

Internal Speaker 15 W [7.5 W+7.5 W](10% THD)

Headphones 3.5mm Plug

Video/Audio Terminals:

AV1, 2, 3 IN Video 1 Vp-p 75

S-Video Y: 1.0 Vp-p 75

C: 0.3Vp-p 75

Audio Approx. 0.5V 47k

Monitor OUT Video 1Vp-p 75

Audio Approx. 0.5V 1k

Dimensions: Height: 471 mm

Width: 657.2 mm

Depth: 472 mm

Mass: 25.7 kg(Net)

Accessories Supplied: Remote Controller x 1

“R6” Battery x 2

75coaxial aerial plug

Design and Specifications are subject to change without notice.

Mass and dimensions shown are approximate.

Specifications

Power Source: AC 110V-240V, 50/60Hz

Power Consumption: 125W

7W (Stand-by condition)

Aerial Impedance: 75unbalanced Coaxial

Tuning System: 17 Systems

VoltageSynthesizer

Auto Search Tuning

100(Position)

Receiving Channels:

VHF Band 2-12 (PAL/ SECAM - B, K1)

0-12 (PAL-B AUST.)

1-9 (PAL-B N.Z.)

1-12 (PAL/SECAM-D)

1-12 (NTSC-M JAPAN)

2-13 (NTSC-M U.S.A.)

UHF Band 21-69 (PAL-G, H, I)

21-69 (SECAM-G, K, K1)

28-69 (PAL-B AUST.)

13-57 (PAL-D, K)

13-62 (NTSC-M Japan)

14-69 (NTSC-M U.S.A.)

CATV S1-S20 (OSCAR)

S21-S41 (HYPER)

1-125 (U.S.A. CATV)

5A, 9A (AUST.)

Z1-Z37 (CHINA)

C13-C49 (JAPAN)

Intermediate Frequency:

Video 38.0 MHz

Sound 31.5 MHz (D, K)/32.0 MHz (I)

32.5 MHz (B, G)/33.5 MHz (M)

Colour 33.57 MHz (PAL)/33.6 MHz (SECAM)

33.75 MHz (SECAM)/34.42 MHz (NTSC)

1999 Matsushita Electric Industrial Co.,Ltd.

distribution is a violation of law.



ORDER NO.ITD9910034C3

Colour Television

TC-21P50R

MX-8 Chassis

- 2 -

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- 3 -

Safety Precautions

General Guide

1. It is advisable to insert an isolation transformer in the AC

supply before servicing a hot chassis.

2. When servicing, observe the original lead dress, espe-

cially 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. When the receiver is not to be used for a long period of

time, unplug the power cord from the AC outlet.

5. Potential, as high as 29.2 kV, is present when this

receiver is in operation. Operation of the receiver with-

out 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 thoroughly familiar with

the precautions necessary when working on high volt-

age equipment. Always discharge the anode of the pic-

ture tube to the receiver chassis before handling the

tube.

6. After servicing make the following leakage current

checks to prevent the customer from being exposed to

shock hazards.

Leakage Current Cold Check

1. Unplug the AC cord and connect a jumper between the

two prongs on the plug.

2. Turn on the receiver’s power switch.

3. Measure the resistance value, with an ohmmeter,

between the jumpered AC 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 chas-

sis, the reading should be between 4 Mand 20 M

When the exposed metal does not have a return path to

the chassis, the reading must be

Leakage Current Hot Check

1. Plug the AC cord directly into the AC outlet.

Do not use an isolation transformer for this check.

2. Connect a 2 k, 10W resistor, in series with an exposed

metallic part on the receiver and an earth such as a

water pipe.

3. Use an AC voltmeter, with high impedance type, to mea-

sure the potential across the resistor.

4. Check each exposed metallic part, and measure the

voltage at each point.

5. Reverse the AC plug in the AC outlet and repeat each of

the above measurements.

6. The potential at any point should not exceed 1.0 V rms.

In case a measurement is outside of 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.

Isolation Transformer

power-on

Hot - Check Circuit

AC Voltmeter

Water Pipe

(Earth)

Instrument's

Metallic Parts

Exposed 2kΩ10W

- 4 -

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 jig is capable of handling 29.2kV without causing X-

Radiation.

Note : It is important to use an accurate periodically cali-

brated high voltage meter.

1. Set the brightness to minimum.

2. Measure the High Voltage. The meter reading should

indicate 28.5 ( +0.7, -1.5) kV. If the meter indication is

out of tolerance, immediate service and correction is

required to prevent the possibility of premature compo-

nent failure.

3. To prevent an X-Radiation possibility, it is essential to

use the specified picture tube.

MEMO

- 5 -

A-Board

Location of Controls and Circuit Boards

Service Position for Main Board (A-Board)

Remove 7 Screws Pull out Main Chassis and stand it.

Location of Control

Board Name Function

A-Board Main

G-Board Power and Audio

H-Board Rear AV

L-Board CRT

X-Board Pincushion

FRONT

- 6 -

Service Hints

Hotel Mode

Purpose

1. At Hotels, this Mode prevent customer from changing the TV preset data, such as Channel preset data.

Note : This Mode is useful for hotel, you should not get into " Hotel Mode" with Normal use.

Operation

1. To get into " Hotel Mode ", press the remote control " Recall [ ] " button and Channel up" [ ] " key on the TV set simul-

taneously, after setting the " Off-Timer [ ] " mode.

2. In this mode, The Channel up and down Function will be able as normal Mode, and The maximum volume level for this

mode is set at the current volume level, that means setting at the level before entering the mode.

However, other function will be disable.

3. To exit This mode, press the remote control " Off-Timer [ ] " button and the " Volume Down [ - ] " key simultaneously.

The I2C Bus Concept:

A. Features

1. The I2C bus is a 2-wire serial bus consisting of a clock line (SCL) and a data line (SDA).

2. It allows bi-directional data transfer, between IC’s.

3. It consists of master and one or more slave IC’s.

-The master initiates transfer and generates clock signals.

-The slave is the IC addressed by a master.

B.I2C Application in the MX-8 Chassis.

During transfer the microcomputer IC1101 in the TV set is always the master device. IC601 and IC1102 are slave addressed by

IC1101.

1. Various control functions are possible via the I2C bus from the microcomputer IC1101 to VCJ IC601, as shown in Fig.1.

2. Date like position, BT voltage, band, AFC, skip, volume, recall, power and off timer setting, service mode setting, colour set-

ting, function etc, are stored and read out from the EEPROM IC1102 via the I2C bus.

Ref.No. SCL SDA Location Function

IC1102 6pin 5pin A-Board MEMORY (EEPROM)

IC1101 38pin 37pin A-Board MASTER (MICON)

TNR001 SCL SDA A-Board TUNER

IC601 9pin 10pin A-Board VIDEO CHROMA JUNGLE (VCJ)

IC401 2pin 1pin A-Board PINCUSHION

IC5501 64pin 1pin H-Board VIDEO SIGNAL PROCESS

IC3001 20pin 21pin H-Board AV SELECT

IC2101 4pin 5pin H-Board AV STEREO

IC2102 16pin 17pin H-Board QUADRUPLE STEREO

SDA

SCL

MASTER

(IC1101)

(IC1102) MEMORY

Fig.1

(IC1102)

VCJ/SIF/VIF

SDA

SCL

SDA

SCL

- 7 -

Market Mode Function

Outline :MPU controls the functions switching for each IICs through IIC bus in MX-8 chassis. The following setting and adjust-

ment can be adjusted by remote control in Market Mode.

1.Selection of Market Mode

Adjust VOLUME “zero” and set OFF TIMER Button [ ] (turn on the timer)

Then, simultaneously press the RECALL [ ] Button on the remote control and the VOLUME DOWN button [ - ] on the TV

set.

2.Selection of CHK Mode

CHK1

Cursor moves each CHK mode by pressing "

"or"



"of

10 key button for REMOTE CONTROL.

VCJ

ADJUSTMENT

PINCUSHION

ADJUSTMENT

WHITE BALANCE

ADJUSTMENT

NORMAL MODE MARKET MODE

Exit Turn the power off

OPTION

SETTING

CHK2

CHK3CHK4

¬¬



MARKET MODE

CHK2

- 8 -

Adjustment data changing

To change the screen (item) in CHK mode, press “3” or “4” of 10 key button. Then Data and Level changes by pressing Volume

“+” or “-” button.

Option Setting Mode (CHK1)

VCJ Adjustment Mode (CHK2)

No. Display Adj. Range AverageData

& Fixed [( )

mark] Data Items

1 COLOUR SYS 0-6 0 Colour system

2 SOUND SYS 0-5 0 Sound system

3 PANA DISPLAY ON/ OFF OFF Panasonic display on/off

4 TEXT 0-2 0 Text contrast

5 SASO ON/ OFF OFF SASO on/off

6 GEO 0-2 0 Geomagnetic

7 STEREO ON/ OFF OFF Stereo on/off

8 AV ON/ OFF ON AV on/off

9 YUV ON/ OFF ON YUV on/off

10 VCR/ GAME ON/ OFF OFF VCR/GAME on/off

11 SPEED ON/ OFF ON Speed on/off

12 NOISE MUTE ON/ OFF OFF Noise mute on/off

13 CH PLAN 0-5, 9 9 Channel plan

No. Display Adj. Range AverageData

& Fixed [( )

mark] Data Items

1 COLOUR 0-63 32 Colour (the same as user control)

2 SUB COLOUR 00H-3FH 19H Sub Colour

3 NTSC-TINT 0-63 33 NTSC Tint (the same as user control)

4 SUB NTSC-TINT 00H3FH 25H Sub NTSC Tint

5 BRIGHT 0-63 33 Bright (the same as user control)

6 SUB BRIGHT 00H-FFH 43H Sub Bright

7 CONTRAST 0-63 53 Contrast (the same as user control)

8 SUB Y CONTRAST 00H-1FH 0BH Sub Y Contrast

9 SHARPNESS 0-63 32 Sharpness

10 R-Y 00H-0FH 09H R-Y level

11 B-Y 00H-0FH 07H B-Y level

12 BELL F0 00H-03H 01H BELL Filter out

13 RF AGC 00H-FFH 7EH RF AGC

- 9 -

Pincushion Adjustment Mode (CHK3)

White Balance Adjustment Mode (CHK4)

Note: Picture will be Changed to the one horizontal line by pressing “5” of 10 key button in the item “ “.

No. Display Adj. Range Average Data

& Fixed [( )

mark] Data Items

1 50 V-HEIGHT 00H-7FH 49H Vertical Height (50Hz)

2 60 V-HEIGHT 00H-7FH 4CH Vertical Height (60Hz)

3 PARABOLA 00H-3FH 0AH Parabola

4 H-WIDTH 00H-3FH 25H Horizontal Width

5 50 VS CORRECT 00H-3FH 0DH Vertical S Curve Correction (50Hz)

6 60 VS CORRECT 00H-3FH 16H Vertical S Curve Correction (60Hz)

7 V-LINEAR 00H-3FH 2EH Vertical Linearity

8 TRAPEZOID 00H-3FH 20H Trapezoid

9 EW-CORNER1 00H-0FH 07H EW-Corner1 (Bottom)

10 EW-CORNER2 00H-0FH 07H EW-Corner2 (Top)

11 50 H CENTER 00H-1FH 0CH Horizontal Center (50Hz)

12 V-CENTER 00H-07H 02H Vertical Center

No. Display Adj. Range Average Data

& Fixed [( )

mark] Data Items

1 R-CUT 00H-FFH 74H Red Cut off

2 G-CUT 00H-FFH 7FH Green Cut off

3 B-CUT 00H-FFH 8AH Blue Cut off

4 BRIGHT 0-63 33 Bright (the same as user control)

5 SUB BR 00H-FFH 43H Sub Bright

6 R-DR 00H-FFH 7AH Red Drive

7 B-DR 00H-FFH 77H Blue Drive

- 10 -

Pincushion Adjustment (CHK3)

50Hz/60HzV-HEIGHT

UP DOWN

PARABOLA

H-WIDTH

50Hz/60HzV-S CORRECT

V-LINEAR

TRAPEZOID

EW-COENER1

EW-COENER2

50Hz H-CENTER

V-CENTER

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