Panasonic TX-29P190T User manual

Order No. MTV0501406C3
Colour Television
TX-29P190T
MD3N Chassis
SPECIFICATIONS
Specifications
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Power Source AC Auto 110-240 V, 50/60 Hz
Power Consumption 197 W
Standby condition: 11 W
Receiving System
Function 21 Systems
Reception of broadcast PAL B, G, H
transmissions and
Playback
PAL I
from Video Cassette Tape PAL D, K
Recorders SECAM B, G
SECAM D, K
SECAM K1
NTSC M (NTSC 3.58/4.5 MHz
Playback from special NTSC 4.43/5.5 MHz
VCRs NTSC 4.43/6.0 MHz
NTSC 4.43/6.5 MHz
NTSC 3.58/5.5 MHz
NTSC 3.58/6.0 MHz
NTSC 3.58/6.5 MHz)
SECAM I
Playback from Special
Disc
PAL 60 Hz/5.5 MHz
Players and Special VCRs PAL 60 Hz/6.0 MHz
PAL 60 Hz/6.5 MHz
SECAM 60 Hz/5.5 MHz
SECAM 60 Hz/6.0 MHz
SECAM 60 Hz/6.5 MHz
NTSC 50 Hz/4.5 MHz
Receiving Channels Regular TV
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/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)
1-125 (U.S.A. CATV)
C13-C49 (JAPAN)
S21-S41 (HYPER)
Z1-Z37 (CHINA)
5A, 9A (AUST.)
Receiving Stereo System NICAM I, NICAM B/G, NICAM D, A2
(German)
Tuning System Frequency synthesizer
Auto Search Tuning
POSITION: 100 Position
DIRECT: 125 Position
High Voltage 31.0 ± 1.0 kV at zero beam current
Picture Tube Overall Picture tube measured
diagonally: 73 cm
Viewable Picture tube measured
diagonally: 68 cm
CRT Deflection: 104°
Audio Output 8W x 2 (Speaker)
Headphones 3.5 mm Plug
Aerial Impedance 75 Unbalanced Coaxial
Video/Audio/Component
AV 1, 2, 3, 4
S-Video In Y:1 Vp-p, 75
DVD C:0:3 Vp-p 75
Y 1.0Vp-p, 75
PB 0.7Vp-p, 75
PR 0.7Vp-p, 75
Monitor Out Video In 1 Vp-p, 75
Audio In Approx 0.4 V 47 k
Video Out 1 Vp-p, 75
Audio Out Approx. 0.4 V 1 k
AV1 IN (Rear): S-Video,
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Video, Audio L/R
terminals
AV2 IN (Front): S-Video,
Video, Audio L/R RGB
Terminals
AV3 IN (Rear): Video,
Audio
L/R terminals
AV4 IN (Rear): Video or
Y/PB/PR, Audio L/R
terminals
RGB Input High-DENSITY D-sub 15 pin
31.5 kHz/60 Hz (640 x 480 dot) and
31.5 kHz/70 Hz (640 x 400 dot)
Remote Control
Transmitter
R6 (AA) Battery x 2
75 coaxial aerial plug
Dimensions (W x D x H) 758 mm x 515 mm x 582 mm
Weight (Mass) 44 kg (Net)
Note:
Design and Specifications are subject to change without notice.
Weight and Dimensions shown are approximate.
2005 Matsushita Electric Industrial Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.
1. Safety Precautions
1.1. 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, 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.
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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 32.0 kV 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.
6. 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.
3. 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, etc. When the
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exposed metallic part has a return path to the chassis, 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 infinite.
1.3. Leakage Current Hot Check (See Fig. 1)
1. Plug the AC cord directly into the AC outlet. Do not use an isolation
transformer for this check.
2. Connect a 2k , 10 W 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 measure 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 any point should not exceed 1.0 V rms. In the case of a
measurement being 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.
1.4. X-Radiation
Warning:
1. The potential sources of X-Radiation in TV sets are the EHT section
and the picture tube. /
2. When using a picture tube test rig for service, ensure that the rig is
capable of handling 32.0 kV without causing X-Radiation. /
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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 reading should indicate 31.0 ± 1
kV. 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 the possibility of X-Radiation, it is essential to use the
specified picture tube.
2. SERVICE HINTS
2.1. HOW TO REMOVE THE REAR COVER
1. Remove the 9 screws as shown in Fig. 1.
2.2. HOW TO MOVE THE CHASSIS INTO SERVICE POSITION
1. Hold and lift the rear of the chassis and gently pull the chassis towards
you as shown in Fig. 3.
2. Release the respective wiring clips and rotate the chassis vertically
through 90° anticlockwise.
3. After servicing replace the bead clamper and ensure all wiring is
returned to its original position before returning the receiver to the
customer.
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2.3. HOTEL MODE
Purpose
1. At Hotels, this Mode prevents the customer from changing the TV
preset data such as Channel preset data. / / Note: This Mode is useful
for Hotels. 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 simultaneously, after setting
the “Off-Timer” mode.
2. In this mode, the Channel up and down Function will be enabled as
normal and the maximum volume level for this mode is set at the
current volume level, i.e. the setting at the level before entering the
mode. However, other functions will be disabled.
3. To exit this mode, exit “Off-Timer” mode and the “Volume Down [-/
]” key simultaneously. / * This information is informed by Service
Manual only.
3. SELF CHECK
1. Self-Check is used to automatically check the bus lines and
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hexadecimal code of the TV set.
2. To get into the Self-Check mode, press the down n [-/ ] button on
the customer controls at the front of the set, at the same time pressing
the HELP button on the remote control and the screen will show:
4. SERVICE MODE FUNCTION
MPU controls the functions switching for each IIC through IIC bus in this chassis. The following setting
and adjustment can be adjusted by remote control in Service Mode.
4.1. HOW TO ENTER SERVICE 1
1. In sound menu, set BASS to MAX and set TREBLE to MINIMUM.
2. Simultaneously press INDEX button on remote control and VOLUME
DOWN button [-] on the TV set.
4.2. HOW TO ENTER SERVICE 2
1. Set the channel to CH99.
2. Press HOLD button on remote control. / Note: / To exit Service mode,
press N or Power button on remote control.
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5. ADJUSTMENT PROCEDURE
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5.1. VOLTAGE CONFIRMATION
Item / preparation
1. +B voltage
Adjustment procedure
1. TPA55: 144.8 ± 1V
2. TPA56: 12 ± 1V
3. TPA57: 9 ± 1V
4. TPA: 2.5 ± 0.25V
5.2. E.H.T CHECK
Item / preparation
1. Receive an RF signal, window or crosshatch pattern.
2. Set the Brightness and Contrast to minimum (0 Beam)
3. Connect the High Voltage Voltmeter to the CRT ANODE CAP.
4. The set should be switched to AV (no input) contrast and brightness
minimum.
Adjustment procedure
1. Check the EHT voltage is (32.0 1.0) kV.
2. Switch from AV mode to TV.
3. With the Brightness and the contrast controls MAX, check that the high
voltage does not drop more than 3.0 kV from the above measurement
with R.F. signal.
5.3. SUB CONTRAST
Item / preparation
1. Receive PAL colour bar pattern
2. Connect oscilloscope to A51 pin 48.
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3. Set controls: CAP.
BRT................CENTER
COLOUR........CENTER
CONTRAST....MAX
AI....................OFF
Adjustment procedure
1. Adjust Sub Contrast (Service 1):
A = 3.85 0.1V
2. Adjust Video gain 2 (Service 1) so that Sub picture level B becomes as
same as Main picture level A.
5.4. SUB TINT
Item / preparation
1. Receive a 3.58 MHz NTSC rainbow pattern.
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2. Connect oscilloscope to A51 pin 50.
3. Set controls:
BRT................CENTER
COLOUR........CENTER
CONTRAST....MAX
NTSC TINT.....CENTER
AI....................OFF
Adjustment procedure
1. Adjust Sub NTSC Tint so that the peak of level of waveform is similar to
Fig. 3
2. Receive the Rainbow pattern (3.58 MHz NTSC) on both of Main and Sub
pictures.
3. Adjust Sub NTSC Tint 2 so that the peak of level of waveform is similar
to Fig. 4.
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5.5. SUB COLOUR
Item / preparation
1. Receive a 3.58 MHz NTSC rainbow pattern.
2. Connect oscilloscope to A51 pin 48.
3. Set controls:
BRT................CENTER
COLOUR........CENTER
CONTRAST....MAX
AI....................OFF
Adjustment procedure
1. Adjust Sub Colour:
A = 3.3 0.5V
5.6. VRS ADJUSTMENT
1. PREPARATION
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A. Set DY to CRT not to tilt up and down and left and right deflection.
(Fig. 1)
B. Set CY to CRT and set CY magnet primarily. / Pur Mg: Set Pur Mg
that 2 magnets are vertical position. / VRS Mg: Set VRS Mg that 2
magnets are side position.
C. Set geomagnetic correction DAC [0].
2. ADJUSTMENT
A. Receive the white balance pattern.
B. Adjust V-CENTER.
C. Set R,B CUT OFF to minimum (0) and set G CUT OFF to center (511).
D. Receive the aging pattern.
E. Set 2 magnets of vertical position to up and down equally so that
center part of CRT. (Fig. 3)
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5.7. COLOUR PURITY
1. Operate the TV set for over 60 minutes.
2. Receive a purity pattern signal. (white pattern)
3. Set Bright and Contrast controls to their maximum positions.
4. Set V-POS to 63 DAC.
5. Adjust roughly the static convergence magnets.
6. Fully degauss the picture tube using an external degaussing coil.
7. Loosen a clamp screw for the deflection yoke and move the deflection
yoke as close to the purity magnet as possible.
8. Adjust the purity magnet so that a vertical green field is obtained at the
center of the screen.
9. Slowly press the deflection yoke and set it where a uniform green field
is obtained.
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10. Adjust roughly the Low Light controls and make sure that a uniform
white field is obtained.
11. Tighten the clamp screw.
5.8. CONVERGENCE
1. INSTRUMENT
A. Helmhortz device
2. PREPARATION
A. Set the Helmhortz device to local magnetic field. / Horizontal: 0 ±
0.03 x10-4 T
B. Receive the cross hatch pattern.
C. Picture menu: DYNAMIC Normal and adjust BRIGHT DAC until gray
portion of cross hatch.
D. Set DY to CRT not to tilt (up and down and left and right).
3. ADJUSTMENT
A. Static convergence Adjustment
a. Make sure that magnets are positioned shown in Fig. 1.
b. Adjust 4-pole magnets (Fig. 1) to align center dots of R and B and
adjust 6-pole magnets to align center dots to G.
c. After adjustment, secure magnets with magnet lock of white
lacquer. / *Beams move with rotating when static magnets are
turned. / Rotational reduce of beams differs by angle of two
magnets. / Therefore, repeat magnet adjustments several times so
that all are aligned completely.
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B. YHC, YV, XV, Adjustment (Fig. 2)
a. Adjust so that Static and Dynamic convergence is best with YHC,
VR, YV and XV coil. / In case of static convergence is tilted, repeat
(1) Static convergence Adjustment.
C. Dynamic convergence Adjustment
a. When dynamic convergence is bad, fixing permalloy between neck
and DY so that dynamic convergence is best.
4. Confirm that left upper side line is straight. / When left upper side line
isn’t straight, put magnet on DY and adjust the left upper side line to
straight.
5.9. CUT OFF
Preparation
1. Receive a colour bar signal with colour “OFF” and operate the TV set
more than 15 minutes.
2. Set the picture menu to “DYNAMIC NORMAL” and the AI to off.
3. Connect an oscilloscope to TPL7 with DC mode.
4. Set the TV set to Service Mode 1.
5. Screen VR: Min.
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6. Set the data level of SUB BRIGHT, R, G, B-CUTOFF and R, G, B-DRIVE
to the table values.
- R High (R-CUT OFF) - 256
- G High (G-CUT OFF) - 512
- B High (B-CUT OFF) - 256
- R Low (R-DRIVE) - 128
- G Low (G-DRIVE) - 128
- B Low (B-DRIVE) - 128
- SUB RIGHT - 136
Adjustment
1. Select G-CUTOFF adjustment mode and collapse vertical scan.
2. Adjust G-CUTOFF control to become the DC = 0V to video level at 180V
as shown below.
3. Slowly turn the screen control clockwise until a green colour horizontal
line appears on the picture tube. This is the setting point for the screen
control. / Note that do not adjust the G-CUTOFF setting in the following
procedure.
4. Adjust the remained R and B-CUTOFF controls so as to get a white
horizontal line on the screen.
5. Return to full field SCAN by pushing the position 5 key on the remote
control.
6. Adjust the R-Drive and B-Drive controls as to obtain uniform white on
the white bar of the greyscale pattern.
7. Confirm correct B/W rendition and greyscale tracking or repeat
CUTOFF and drive control setup. / Note: / Write down the original
value for each address
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