Panasonic TC-15PM10R Bedienungsanleitung

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

Power Consumption : 69W

Aerial Impedance: 75Ωunbalanced Coaxial type

Receiving System : 17 System

Receiving Channels :

VHF 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 21-69 (PAL G,H,I/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-S41(OSCAR) 1-125 (U.S.A

CATV) C13-C41(JAPAN) S21-S41

(HYPER)Z1-Z37 (CHINA)

Intermediate Frequency :

Video 38.0 MHz

Sound 31.5 MHz (D,K) / 32.5MHz (B,G)

32.0 MHz (I) / 32.5MHz (M)

rights reserved. Unauthorized copying and

distribution is a violation of law.

TC-15PM10R

MX-7 Chassis

Colour 33.57 MHz (PAL)33.6 MHz

(SECAM) 32.5 MHz (B,G)33.75

MHz (SECAM) 34.42 MHz (NTSC)

Video / Audio Terminals :

FAV In : Video In 1 Vp-p 75ΩVideo In

Approx, 400mVrms

Monitor Out : Video Out1 Vp-p 75ΩAudio

OutApprox, 400mVrms

RAV In : Video In 1 Vp-p 75Ω

Audio in: Approx. 400m Vrms

High Voltage : 27.5 kV ( ± 1.0 )at zero beam

current

Picture Tube : A36LTN194x36cm (15

inches)Measured diagonally, 90°

deflection

Audio Output : 3.5W

Dimensions : Height : 373.5 mmWidth : 385.0

mmDepth : 379.8 mm

Mass : 12.5 kg

Specifications are subject to change withoutnotice.Mass and

dimensions shown are approximate.

Colour Television

Specification

ORDER NO. MTV 0006136C3

1 Safety Precautions 2

1.1. General Guide Lines 2

1.2. Leakage Current Cold Check 2

1.3. Leakage Current Hot Check (Fig. 1) 2

1.4. X-Radiation 3

1.5. MX-7 Chassis Block Diagram 3

2 Service Hints 4

2.1. Service Position for E-Board 4

2.2. Factory mode adjustment 4

2.3. Adjustment for White Balance 4

2.4. Adjustment for CRT CUT OFF 4

2.5. Adjustment Procedure 5

2.6. Pal Colour 5

2.7. Adjustment 6

3 L-BOARDTNP4G137AU(S’PORE)TNP4G137AD(M’EAST/CIS) 9

4 Z1-BOARDTNP4G139AA 10

5 A-BOARDTNP4G136AD(M’EAST)TNP4G136AU(S’PORE) 11

6 Schematic Diagram for models TC-15PM10R (MX-7 Chassis)

7 CRT 14

8 Speakers 15

9 Schematic Diagram 17

10 Replacement Parts List 19

CONTENTS

Page Page

1 Safety Precautions

1.1. General Guide Lines

1.It is advisable to insert an isolation transformer in the AC supply before servicing this 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.When the receiver is not to be used for a long period of time, unplug the power cord from the AC cord outlet.

5.Potential, as high as 28.5kV. is 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

thoroughly familiar with the precautions necessary when working on high voltage equipment. Always discharge the anode of the

picture tube to the receiver chassis before handling the tube. After servicing make the following leakage current checks to

prevent the customer from being exposed to shock hazards.

1.2. 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.

Measure the resistance value, with an ohmmeter, between the jumper AC plug and each exposed metallic cabinet part on the

receiver, such as screw heads, aerials, connectors, control shafts, ect. When the exposed metallic part has a return path to the

chassis, the reading should be between 4 Mohm and 20 MΩ.When the exposed metal does not have a return path to the

chassis, the reading must be infinite.

1.3. Leakage Current Hot Check (Fig. 1)

1.Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2.Check a 2 kΩnon-inductive resistor and an AC/DC current meter, in series with each exposed metallic part on the receiver in

turn and an earth such as a water pipe. The current from any point should not exceed 0.7 mA peak AC or 2 mA DC. In the case

of a measurement being outside of these 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.

TC-15PM10R

Fig. 1

1.4. X-Radiation

Warning :

The potential sources of X-Radiation in TV set are the EHT section and the picture tube. When using a picture tube test jig for

service, ensure that jig is capable of handling 28.5kV without causing X-Radiation. Note: It is important to use an accurate

periodically calibrated high voltage meter.

1.Set the brightness to minimum.

2.Use the remocon to get into Service Mode.

3.Measure the EHT. The meter reading should indicate 27.5(+-1.0)kV. If the meter indication is out of tolerance, immediate

service and correction is required to prevent the possibility of premature component failure.

4.To prevent the possibility X-Radiation, it is essential to use the specifield picture tube, if service replacement becomes

necessary.

1.5. MX-7 Chassis Block Diagram

TUNER SA

AUDIO

EAR

PHONE

SPEAER

OUT

H OUT

FBT

SCREEN

FOCUS

RGB

IC601

EHT

CRT

TONE

CIRCUIT

SIF

TRAP

POE R

FM DEMOD.

( Z - BOARD ).

TC-15PM10R

2 Service Hints

2.1. Service Position for E-Board

1.Remove the back cover.

2.Stand the TV set as shown in fig. 7

3.Remove the A-Board from the TV set by pulling the main board out as shown in figure 7.

Fig. 7

2.2. Factory mode adjustment

How to set: To set the Factory mode, press Volume 0 dac on the TV and TImer Setting 30 Min on

the remote control and press Volume (-) Down button on the TV together press recall on

the remote control.

To Set Self-Check: Press the volume down button on TV then press the off timer button on remote control.

2.3. Adjustment for White Balance

Preparation:

1.Receive the white balance pattern and aging should have been performed over 30 minutes.

2.Set the picture menu to DYNAMIC NORMAL.

3.Degause the CRT face.

4.Fix the CRT colour analyzer receiver unit to CRT face.

Adjustment of Low Light.

1.Adjustment Sub Bright, so that Y = 6.3 ± 1.0 unit

2.Adjustment R-CUT OFF, so that Y = 0.235 ± 0.01 unit

3.Adjustment G-CUT OFF, so that Y = 0.235 ± 0.01 unit

Adjustment of High Light

1.Adjustment Sub Bright, so that Y = 390 unit

2.Adjustment R-Drive, so that Y = 0.259 ± 0.01 unit

3.Adjustment B-Drive, so that Y = 0.259 ± 0.01 unit

2.4. Adjustment for CRT CUT OFF

Preparation:

1.Connect the oscilloscope probe to TPL7.

2.Screen VR min.

TC-15PM10R

2.5. Adjustment Procedure

3.Set the data Sub Bright, Bright.

4.In service Mode at ‘Bright’ dac press [5] in factory mode to enter vertical line and adjust by volume down or up button.

5.Adjust “Screen VR” until I-H Line appears.

Item / Preparation Adjustment Procedure

+B Voltage

1.Operate the TV set.

2.Set control as follows:

Brightness.............minimum

Contrast.................minimums

Confirm the DC voltage at the indicated test points, as follows:

TPA 12 : 141.2 ± 0.8V

TPA 11 : 8 ± 1V

TPA 10 : 5 ± 1V

TPA 21 : 215 ± 15V

RF AGC

1.Receive a colour bar signal at an RF level of 75dBU with 75Ω

loaded.

2.Connect digital multimeter to RF AGC at Tuner.

1.Select “RF AGC” indication in CHK 2, on Screen by remote control

at factory mode.

2.Set RF AGC by using remote control volume (+) or volume (-)

button until voltage AGC at Tuner reaches 2.7 ± 0.1V.

3.Increase RF signal strength by 2dB, confirm AGC at Tuner voltage

drop.

High Voltage

1.Receive the crosshatch pattern.

2.Set to 0 Beam.

Screen VR.........minimum

Contrast..............minimum

1.Connect a DC voltage meter to TPA 12 and confirm the +B voltage

is 141.2 ± 0.8V.

2.Connect a high frequency voltmeter to heater and confirm that

voltage reads 6.0 ± 0.24 (VRMS).

3.Normalize the brightness and contrast.

Item / Preparation Adjustment Procedure

Connect a short jumper between TPA 10 and TPA 20.

Press Main Menu and Set system to use AV-NTSC (3.58MHz)

DYNAMIC.........Normals 1.Adjust Sub-Tint so that No. 2, 3 and 4 becomes level waveform is

similar to Fig. 10.

2.Confirm phase at Tint is changes more than ± 30 by Tint control.

3.Confirm that colour level is maximum when colour DAC is adjusted

to maximum position.

Note: Use Remote control only when adjusting user mode to Sub-

Tint.

Fig. 10

2.6. Pal Colour

1.Receive the PAL B/G studio colour bar pattern, and adjust local frequency at the best tuned position.

TC-15PM10R

2.7. Adjustment

2.Pic Menu: Dynamic Normal, Confirm Contrast - 63, Sub Contrast - 21.

3.Channel colour set --------- STD

4.Connect TPA 10 to TPA 20.

5.Set (A) to 2.3 ± 0.2V by BRT (CHK2) Fig. 1.

1.Connect oscilloscope probe to TPA 31 (G OUT) with 10k series resistor and adjust Contrast so that (B) as in Fig. 1 is 2.8 ± 0.1V.

2.Adjust ‘Sub Colour’ so that waveform as in Fig. 1 (1) 2.5 ± 0.1V.

3.Connect oscilloscope probe to TPA 32 (R OUT) with 10k series resistor and confirm waveform as in Fig. 2 is (2) 2.7 ± 0.4V.

TC-15PM10R

Colour Purity

1.Set the Brightness and Contrast controls to their maximum

positions.

2.Operate the TV set for 30 minutes.

3.Fully degauss the picture tube by using an external

degaussing coil.

4.Apply a crosshatch pattern signal and adjust the static

convergence magnets to the approximately correct position.

5.Receive a black and white signal.

6.Set the control as follows:

Red................minimum

Green.............minimum

Blue.................minimum

Press the Shipping button on the remote control twice to

select CRT Adjustment Mode as per Fig. 16 to select low

light.

7.Loosen the clamp screw for the deflection yoke A in Fig. 24

and move the deflection yoke as close to the purity magnet

as possible.

8.Adjust the purity magnetic rings so that a vertical green field

is obtained at the centre of the screen.

Fig. 20

9.Slowly push the deflection yoke and set it where a uniform

green field is obtained.

10.Re-adjust the Low Light controls to their correct settings

and make sure that a uniform white field is obtained.

11.Tighten the clamp screw A in Fig. 24.

Convergence

1.Apply a crosshatch pattern signal and Normalize Contrast

control to the maximum positions.

2.Adjust Brightness until the grey position of the crosshatch

pattern just becomes black.

3.Adjust the Red and Blue line at the centre of the screen by

rotating the R-B static.

Fig. 22

4.Adjust Red and Blue with Green line at centre of the screen

by rotating (RB) -G static convergence magnetic rings.

5.Lock convergence magnetic with silicone sealer.

6.Remove the DY wedges and slightly tilt the deflection yoke

vertically and horizontally to obtain the good overall

convergence.

Fig. 23

7.Fix the deflection yoke by reinserting the DY wedges. Refer

to Fig. 24.

8.If purity error is found, repeat “Colour Purity” adjustment.

Before Colour Purity, Convergence and White Balance adjustment are attempted, V.

Height, H. Centre and Focus adjustments must be completed.

TC-15PM10R

Note:

Fig. 24

Fig. 25

1.Wedge A, B and C should be inserted following the following sequence of 1, 2 and 3 shown in Fig. 25.

2.The wedges should be set 120° apart from each other.

3.Be certain that four wedges are firmly fixed and the Deflection Yoke is tightly clamped in place.

Otherwise the Deflection Yoke may shift its position and cause a loss of convergence and purity.

TC-15PM10R

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