Panasonic TX-29FX20R User manual

ORDER NO. MTV0601420CE
Colour Television
TX-29FX20R
GP41 Chassis
SPECIFICATIONS
Specifications
1

Power Source : AC SINGLE 220-240V, 50/60 Hz
Power Consumption : 98W
Aerial Impedance : 75 unbalanced
Coaxial type
Receiving System : 17 Systems
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)
13-69 NTSC M (USA)
CATV S1-S20 (OSCAR)
1-125 (U.S.A CATV)
C13-C49 (JAPAN)
S21-S41 (HYPER)
Z1-Z37 (CHINA)
5A, 9A (AUST)
Video / Audio Terminals :
DVD
Y1.0Vp-p, 75
PB 0.7Vp-p, 75
PR 0.7Vp-p, 75
AV 1,2,3
Video In 1Vp-p, 75
Audio In Approx. 0.5V, 47k
Monitor Out
Video Out 1Vp-p, 75
Audio Out Approx. 0.5V, 1k
Intermediate Frequency :
Video 38.0 MHz
Sound 31.5 MHz (D, K, K1)
32 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)
High Voltage : 31.0kV ±1.0
at zero beam current
Picture Tube : A68LZU185X-E
67.6cm (29 inches)
Measured diagonally,
90° deflection
Audio Output : 16.0W
Dimensions : Height : 578 mm
Width : 786 mm
Depth : 508 mm
Mass : 43 kg (Net Wt.)
Specifications are subject to change without notice. / Mass
and dimensions shown are approximate.
2006 Matsushita Electric Industrial Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.
1. Safety Precautions
1.1. General Guide Lines
2

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 32.0kV 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, etc. When the 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 (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 k non-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.
3

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.
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 32.0kV 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 31.0±1.0kV. 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
specified picture tube, if service replacement becomes necessary.
1.5. GP41 Chassis Block Diagram
2. Service Hints
2.1. Service Position for E-Board
1. Remove the back cover.
2. Stand the TV set as shown in Fig. 2.
3. Remove the A-Board from the TV set by pulling the main board out as
shown in Figure 2.
4

Fig. 2
2.2. 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. Degausse 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 = 6.5 ± 1.0 nit.
2. Adjustment R-CUT OFF, so that X = 0.247 ± 0.005 nit.
3. Adjustment G-CUT OFF, so that Y = 0.273 ± 0.005 nit.
Adjustment of High Light
1. Adjustment Sub Bright, so that Y = 150 nit.
2. Adjustment R-Drive, so that X = 0.261 ± 0.003 nit.
3. Adjustment B-Drive, so that Y = 0.267 ± 0.003 nit.
2.3. Adjustment for CRT CUT OFF
Preparation:
1. Connect the oscilloscope probe to (GREEN CATHODE) on L Board.
2. Screen VR min.
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” to set voltage as in table 1.
5

2.4. Adjustment Procedure
2.4.1. +B Voltage
Item / preparation
1. Operate the TV set.
2. Set control as follows :
Brightness ........... minimum
Contrast ............... minimum
Adjustment procedure
1. Confirm the DC voltage at the indicated test points, as follows :
TPA 15 : 3.35 ± 0.2V
TPA 16 : 141 ± 2V
TPA 17 : 8.2 ± 0.3V
TPA 18 : 1.9 ± 0.2V
TPA19 : 5.2 ± 0.2V
TPA20 : 220 ± 15V
2.4.2. High Voltage
Item / preparation
1. Receive the crosshatch pattern.
2. Set to 0 Beam.
Screen VR .......... minimum
Contrast .............. minimum
Adjustment procedure
6

1. Connect a DC voltage meter to TPA 16 and confirm the +B voltage is
141.0 ± 2V.
2. Connect a high frequency voltmeter to heater and confirm that voltage
reads 6.3 ± 0.24 (VRMS).
3. Normalize the brightness and contrast.
2.5. Adjustment
Before Colour Purity, Convergence and White Balance
adjustment are attempted,
V. Height, H. Centre and Focus adjustments must be completed.
Colour Purity
1. Set the Brightness and Contrast controls to their maximum positions.
2. Operate the TV set for 60 minutes.
3. Fully degausse 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 to
select low light.
7. Loosen the clamp screw for the Deflection Yoke A in Fig. 10 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. 6
9. Slowly push the Deflection Yoke and set it where a uniform green field
7

is obtained.
Fig. 21
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. 10.
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. 8
4. Adjust Red and Blue with Green line at centre of the screen by rotating
(RB)-G static convergence magnetic rings.
5. Lock convergence magnets with silicone sealer.
6. Remove the DY wedges and slightly tilt the Deflection Yoke vertically
8

and horizontally to obtain the good overall convergence.
Fig. 9
7. Fix the Deflection Yoke by reinserting the DY wedges. Refer to Fig. 10.
8. If purity error is found, repeat “Colour Purity” adjustment.
Fig. 10
Fig. 11
9

Notes:
1. Wedge A, B and C should be inserted following the sequence of 1, 2
and 3 shown in Fig. 11.
2. The wedges should be set 120° apart from each other.
3. Be certain that three 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.
3. Conductor Views
4. Schematic Diagram
10

11

4.1. A Board
4.1.1. A Board (1/5)
4.1.2. A Board (2/5)
4.1.3. A Board (3/5)
4.1.4. A Board (4/5)
4.1.5. A Board (5/5)
4.2. L Board
4.2.1. L Board (1/3)
4.2.2. L Board (2/3)
4.2.3. L Board (3/3)
4.3. G Board
12

4.3.1. G Board (1/3)
4.3.2. G Board (2/3)
4.3.3. G Board (3/3)
5. Parts Locations
6. Replacement Parts List
13

6.1. Replacement Parts List
Ref. No. Part No. Part Name & Description Remarks
1A68LZU185X-E PICTURE TUBE
2EAS15S17A SPEAKER
N2QAJB000161 REMOTE CONTROL
3TBM4G1319 MODEL NAME PLATE
4TBM4G3017 PANASONIC BADGE
5TBX4G91111 POWER BUTTON
TES4G214 SPRING (POWER BUTTON)
TES4G406 COIL SPRING
TES4G409-1 SPRING (DOOR)
THT4G1011J SCREW (SPEAKER)
THT4G10139 SCREW
6TKP4G11744 AC CORD BRACKET
7TKP4G13461 DOOR
8TKU4GA1160 BACK COVER
9TLCA005 CONVERGENCE YOKE
10 TLK4G9083X ROTATION COIL
11 TLK4G9100X DEGAUSSING COIL
12 TLY4G342T DEFLECTION YOKE
13 TMM4G503 RUBBER WEDGE
TMM4G902-3 RUBBER WASHER
NLA TNP4G314AT L BOARD
NLA TNP4G380AK A BOARD
14

Ref. No. Part No. Part Name & Description Remarks
NLA TNP4G386AG G BOARD
TPE4G14038 SET COVER
TQB4G5025 FAN BAG
TSMA011 MAGNET
TSN63115-4 PURITY MAGNET
TSX4G195L-1 AC POWER CORD
14 TXFKY01DG07 CABINET ASSY
TXFPC01DG07 CARTON
TXFPD01DG09 CUSHION (TOP)
TXFPD02DG09 CUSHION (BOTTOM)
CAPACITORS
C002 ECJ2VF1H103Z C 0.01UF, Z, 50V
C003 ECJ2VC1H560J C 56PF, J, 50V
C004 ECJ2VC1H560J C 56PF, J, 50V
C006 F2A1C101A310 E 100UF, 16V
C1064 ECJ2FB0J225K C 2.2UF, J, 6.3V
C1103 F1J1H103A590 C 0.01UF, J, 50V
C1131 F1J1H103A590 C 0.01UF, J, 50V
C1142 ECJ2VF1H104Z C 0.1UF, Z, 50V
C1167 ECA1CM101B E 100UF, 16V
C2113 F2A1H3R3A317 E 3.3UF, 50V
C2117 ECJ2VF1H104Z C 0.1UF, Z, 50V
C2129 F2A1C102A159 E 1000UF, 16V
C2303 F2A1H4R7A317 E 4.7UF, 50V
C2308 ECJ2VF1H104Z C 0.1UF, Z, 50V
C2309 ECJ2VF1H104Z C 0.1UF, Z, 50V
C2312 ECJ2VC1H222J C 2200PF, J, 50V
C2313 ECJ2VC1H222J C 2200PF, J, 50V
C2314 F2A1E470A270 E 47UF, 25V
C2315 ECA1EM471B E 470UF, 25V
C2317 ECJ2VF1H104Z C 0.1UF, Z, 50V
C2319 ECJ2VF1H104Z C 0.1UF, Z, 50V
C2321 F1J1H102A018 E 1000UF, 50V
C2322 F1J1H102A018 E 1000UF, 50V
C2325 F2A1C470A310 E 47UF, 16V
C2326 F2A1C470A310 E 47UF, 16V
C253 ECEA1HN2R2U E 2.2UF, 50V
C254 F1J1H102A018 E 1000UF, 50V
C257 ECEA1HN2R2U E 2.2UF, 50V
C258 F1J1H102A018 E 1000UF, 50V
C3005 ECJ2VC1H222J C 2200PF, J, 50V
C301 ECJ2VB1C104K C 0.1UF, K, 16V
C3012 ECJ2VC1H222J C 2200PF, J, 50V
C3016 ECJ2VC1H152J C 1500PF, J, 50V
C3018 ECJ2VC1H152J C 1500PF, J, 50V
C302 ECJ2VB1C104K C 0.1UF, K, 16V
C3023 ECJ2VF1C105Z C 1UF, Z, 16V
C3024 ECJ2VF1C105Z C 1UF, Z, 16V
C3025 ECJ2VF1C105Z C 1UF, Z, 16V
C3027 ECJ2VF1C105Z C 1UF, Z, 16V
C303 ECJ2VB1C104K C 0.1UF, K, 16V
C3034 ECA1AM471B E 470UF, 10V
C305 F2A1C4710045 E 470UF, 16V
C306 F1J1H102A018 E 1000UF, 50V
C307 F1J1H102A018 E 1000UF, 50V
C308 F1J1H102A018 E 1000UF, 50V
15

Ref. No. Part No. Part Name & Description Remarks
C3155 F1J1H103A590 C 0.01UF, J, 50V
C3156 ECA1CM101B E 100UF, 16V
C3157 ECA1CM101B E 100UF, 16V
C3163 F2A1C101A310 E 100UF, 16V
C3164 F2A1C101A310 E 100UF, 16V
C3166 ECJ2VF1C105Z C 1UF, Z, 16V
C3169 ECJ2VF1C105Z C 1UF, Z, 16V
C355 ECWF2334JSR P 0.33UF, J, 250V
C356 ECJ2VC1H102J C 1000PF, J, 50V
C360 ECKW3D102KBP C 1000PF, K, 2KV
C362 ECEA1CN100U E 10UF, 16V
C363 F2A1C331A159 E 330UF, 16V
C368 ECA2EM100B E 10UF, 250V
C370 ECJ2VF1H222Z C 2200PF, Z, 50V
C371 ECJ2VF1H222Z C 2200PF, Z, 50V
C372 ECJ2VF1H222Z C 2200PF, Z, 50V
C375 ECWF2154JSR P 0.15UF, J, 250V
C401 ECJ2VC1H560J C 56PF, J, 50V
C404 ECQB1222JF P 2200PF, J, 100V
C406 F2A1H221A247 E 220UF, 50V
C407 ECJ2VC1H560J C 56PF, J, 50V
C408 ECQB1154JF P 0.15UF, J, 100V
C454 ECQV1H154JM P 0.15UF, J, 50V
C4850 F2A1C101A310 E 100UF, 16V
C4851 F2A1C471A339 E 470UF, 16V
C4852 ECUX1H101JCX C 100PF, J, 50V
C502 ECKR3A821KBP C 820PF, K, 1KV
C504 F1J1H681A590 C 680PF, J, 50V
C507 ECJ2VF1C105Z C 1UF, Z, 16V
C511 ECA1VM101B E 100UF, 35V
C512 F1B2H471A025 C 470PF, 500V
C513 F1B2H331A025 C 330PF, 500V
C514 F2A1E102A225 E 1000UF, 25V
C515 F1B2H331A025 C 330PF, 500V
C516 F2A1E102A225 E 1000UF, 25V
C519 F2A2C2210013 E 220UF, 160V
C520 F2A0J221A317 E 220UF, 6.3V
C552 ECA2EM100B E 10UF, 250V
C553 F0C2E684A040 P 0.68UF, 250V
C554 F0C2E684A040 P 0.68UF, 250V
C555 ECWF2564JSB P 0.56UF, 250V
C559 ECWH20133JVB P 0.013UF, 2kV
C560 ECQF4273JZH P 0.027UF, 400V
C561 ECWH20202JVY P 2000PF, 2kV
C565 ECQB1H273JF P 0.027UF, J, 50V
C566 ECQM4472JZ P 4700PF, J,400V
C568 F0C3D102A003 P 1000PF, 2kV
C601 F1J1H183A021 C 0.018UF, 50V
C602 F1J1H222A590 C 2200pF, 50V
C604 F2A1C101A310 E 100UF, 16V
C605 ECJ2VB1C104K C 0.1UF, K, 16V
C606 ECJ2VF1H104Z C 0.1UF, Z, 50V
C607 ECJ2VF1H103Z C 0.01UF, Z, 50V
C611 ECJ2VF1H104Z C 0.1UF, Z, 50V
C613 ECJ2VF1H104Z C 0.1UF, Z, 50V
C614 ECJ2VC1H100C C 10PF, C, 50V
C615 ECJ2VC1H100C C 10PF, C, 50V
16

C615 ECJ2VC1H100C C 10PF, C, 50V
17

Ref. No. Part No. Part Name & Description Remarks
C616 F2A1C101A310 E 100UF, 16V
C618 F2A1C101A310 E 100UF, 16V
C619 F2A1C101A310 E 100UF, 16V
C620 ECJ2VB1H333K C 0.033UF, K, 50V
C621 ECA1CM100B E 10UF, 16V
C622 F2A1C101A310 E 100UF, 16V
C623 F2A1C101A310 E 100UF, 16V
C624 ECJ2VB1C104K C 0.1UF, K, 16V
C626 F2A1C101A310 E 100UF, 16V
C627 F2A1C101A310 E 100UF, 16V
C628 F2A1A471A274 E 470UF, 10V
C630 ECJ2VF1H103Z C 0.01UF, Z, 50V
C631 ECJ2VB1H333K C 0.033UF, K, 50V
C632 F2A1H4R7A317 E 4.7UF, 50V
C633 ECJ2VC1H471J C 470PF, J, 50V
C634 ECJ2VC1H471J C 470PF, J, 50V
C635 F2A1C101A310 E 100UF, 16V
C636 F1J1H4710002 C 174PF, Z, 50V
C639 ECJ2VF1H104Z C 0.1UF, Z, 50V
C640 ECJ2VF1H104Z C 0.1UF, Z, 50V
C642 ECJ2VF1H104Z C 0.1UF, Z, 50V
C645 ECJ2VF1H104Z C 0.1UF, Z, 50V
C646 ECJ2VF1H104Z C 0.1UF, Z, 50V
C650 ECA1CM331B E 330UF, 16V
C652 ECJ2VF1H104Z C 0.1UF, Z, 50V
C654 ECJ2VF1H104Z C 0.1UF, Z, 50V
C655 ECJ2VF1H104Z C 0.1UF, Z, 50V
C656 ECJ2VC1H270J C 27PF, J, 50V
C657 ECJ2VC1H560J C 56PF, J, 50V
C662 F2A0J101A317 E 100UF, 6.3V
C704 F1B2H471A025 C 470PF, 500V
C706 ECQM4222JZ P 2200PF, 400V
C818 ECQB1H104JF P 0.1UF, 50V
C821 ECKW3D681KBP C 680PF, K, 2KV
C822 ECKCNA472ME7 C 4700PF, M,
C824 F1A2E331A002 C 330PF, M,
C825 F1A2E331A002 C 330PF, M,
C826 ECQB1H103JF P 0.01UF, 50V
C827 ECQB1H333JF P 0.033UF, J, 50V
C840 ECKCNA471MB7 C 470PF, M,
C841 ECKW3D151KBR C 150PF, K, 2KV
C842 F2A1H2200033 E 22UF, 50V
C843 F2A1E222A224 E 2200UF, 25V
C848 ECQB1H222JF P 2200PF, J, 50V
C849 F1B2H471A025 C 470PF, 500V
C850 ECKCNA471MB7 C 470PF, M,
C851 ECQB1H103JF P 0.01UF, 50V
C854 ECKWAE472ZED C 4700PF, Z,500V
C855 ECKWAE472ZED C 4700PF, Z,500V
C856 F2B2G4710006 E 470UF, 400V
C857 ECQM4473JZ P 0.047UF, J,400V
C859 ECKW3D821KBP C 820PF, K, 2KV
C863 F2A1C4710045 E 470UF, 16V
C864 ECKCNA152ME7 C 1500PF, M,
C865 ECKW3D331JBP C 330PF, J, 2KV
C867 F2A2C2210013 E 220UF, 160V
18

Ref. No. Part No. Part Name & Description Remarks
C869 ECUX1H151JCX C 150PF, J, 50V
C870 F2A1C472A260 E 4700UF, 16V
C871 F1B2H471A025 C 470PF, 500V
C872 F2A1C332A260 E 3300UF, 16V
C873 L6Y5P4B122K C 1200PF, K,500V
C875 F1J1H332A021 C 3300PF, 50V
C877 F2A1C1000079 E 10UF, 16V
C879 F2A0J331A260 E 330UF, 6.3V
C882 F2A1C101A310 E 100UF, 16V
C884 F2A1C332A182 E 3300UF, 16V
C886 F2A1H330A342 E 33UF, 50V
C887 F2A1C102A159 E 1000UF, 16V
C891 F2A1C101A310 E 100UF, 16V
C892 F1J1H332A021 C 3300PF, 50V
C893 ECA1CM221B E 220UF, 16V
C894 B81130C1224M P 0.22UF, 275V
C895 B81130C1224M P 0.22UF, 275V
C897 F1J1H332A021 C 3300PF, 50V
C898 ECJ2VF1C105Z C 1UF, Z, 16V
C904 F1B1H103A013 C 0.01UF, 50V
C912 F1J1H104A578 C 0.1UF, 50V
C952 ECA1HHG100 E 10UF, 50V
C953 F1B1H103A013 C 0.01UF, 50V
C958 ECA2CM470B E 47UF, 160V
C959 F1B2H1030028 C 0.01UF, 500V
C960 F1A2H151A035 C 150PF, 500V
C961 F2A2A1000016 C 10UF, 100V
C962 F1B2H1030028 C 0.01UF, 500V
C963 F1A2H151A035 C 150PF, 500V
C964 ECA1CHG101 E 100UF, 16V
C965 ECA2CM220B E 22UF, 160V
C966 ECA1CHG101 E 100UF, 16V
C967 ECA1CM221B E 220UF, 16V
DIODES
D1061 B3AGA0000089 DIODE
D1132 B0BA3R800012 DIODE
D2103 B0AACK000004 DIODE
D2107 B0AACK000004 DIODE
D2108 B0AACK000004 DIODE
D354 B0HAMP000067 DIODE
D355 B0HAMP000067 DIODE
D356 B0HAMP000067 DIODE
D361 B0AACK000004 DIODE
D362 B0AACK000004 DIODE
D363 B0AACK000004 DIODE
D364 B0AACK000004 DIODE
D365 B0AACK000004 DIODE
D366 B0AACK000004 DIODE
D367 B0AACK000004 DIODE
D402 B0HAJL000003 DIODE
D503 B0AACK000004 DIODE
D504 B0AACK000004 DIODE
D507 B0ACMJ000001 DIODE
D511 MA4108J DIODE
D512 B0HAJL000003 DIODE
D513 EU02 DIODE
D515 EU02 DIODE
19

D515 EU02 DIODE
20