Panasonic TX-29RX20M-MALAYSIA Service Manual
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Panasonic TX-29RX20M-MALAYSIA Service Manual

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Specifications
Power Source :
Power Consumption :
Aerial Impedance :
Receiving System :
SYSTEMS
——————————————————————————————
1
PAL B, G, H
2
PAL I
3
PAL D, K
4
SECAM B, G
5
SECAM D, K
6
SECAM K1
7
NTSC M
(NTSC 3.58 / 4.5 MHz)
——————————————————————————————
8
NTSC 4.43 / 5.5 MHz
9
NTSC 4.43 / 6.0 MHz
10
NTSC 4.43 / 6.5 MHz
11
NTSC 3.58 / 5.5 MHz
12
NTSC 3.58 / 6.0 MHz
13
NTSC 3.58 / 6.5 MHz
14
SECAM I
——————————————————————————————
15
PAL 60 Hz / 5.5 MHz
16
PAL 60 Hz / 6.0 MHz
17
PAL 60 Hz / 6.5 MHz
AC SINGLE 220-240 V, 50/60 Hz
95 W
75 Ω unbalanced
Coaxial type
17 Systems
FUNCTIONS
Reception
of broadcast
transmission and
playback from
video cassette tape
recorders.
Playback from
special VCR only.
Playback from
special Disc player
and VCR only.
TX-29RX20M-
MALAYSIA
GP41Z Chassis
Receiving Channels :
VHF
UHF
CATV
Video / Audio Terminals :
DVD
Y
P
B
P
R
AV 1,2,3
Video In
Audio In
© 2008 Matsushita Electric Industrial Co., Ltd. All
rights
reserved.
distribution is a violation of law.
ORDER NO. MTV0701596CE
Colour Television
2-12 PAL / SECAM B, K1
0-12 PAL B (AUSTRALIA)
1-9 PAL B (N. ZEALAND)
1-12 PAL / SECAM D
1-12 NTSC M (JAPAN)
2-13 NTSC M (U.S.A.)
21-69 PAL G, H, I / SECAM G, K, K1
28-69 PAL B (AUSTRALIA)
13-57 PAL D, K
13-62 NTSC M (JAPAN)
14-69 NTSC M (U.S.A.)
S1-S20 (OSCAR)
1-125 (U.S.A. CATV)
C13-C49 (JAPAN)
S21-S41 (HYPER)
Z1-Z37 (CHINA)
5A, 9A (AUSTRALIA)
1.0 Vp-p, 75 Ω
0.7 Vp-p, 75 Ω
0.7 Vp-p, 75 Ω
1 Vp-p, 75 Ω
Approx. 0.5 V, 47 k Ω
Unauthorized
copying
and

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Summary of Contents for Panasonic TX-29RX20M-MALAYSIA

  • Page 1 ORDER NO. MTV0701596CE Colour Television TX-29RX20M- MALAYSIA GP41Z Chassis Specifications Power Source : AC SINGLE 220-240 V, 50/60 Hz Receiving Channels : Power Consumption : 95 W 2-12 PAL / SECAM B, K1 Aerial Impedance : 75 Ω unbalanced 0-12 PAL B (AUSTRALIA) Coaxial type 1-9 PAL B (N.

  • Page 2: Table Of Contents

    TX-29RX20M-MALAYSIA Monitor Out at zero beam current 1 Vp-p, 75 Ω Video Out Picture Tube : A68MAU085X23 Approx. 0.5 V, 1 k Ω Audio Out 68 cm (29 inches) Intermediate Frequency : Measured diagonally, Video 38.0 MHz 90° deflection Sound 31.5 MHz (D, K, K1)

  • Page 3: Safety Precautions

    TX-29RX20M-MALAYSIA 1 Safety Precautions 1.1. General Guidelines 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.

  • Page 4: X-Radiation

    TX-29RX20M-MALAYSIA 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 the jig is capable of handling 32.5 kV without causing X-Radiation.

  • Page 5: Gp41Z Chassis Block Diagram

    TX-29RX20M-MALAYSIA 1.6. GP41Z Chassis Block Diagram...

  • Page 6: Factory Mode Setting

    TX-29RX20M-MALAYSIA 2 Factory Mode Setting 2.1. Set to Factory Mode 1. Press the factory set button on the remote and the volume down (front control) button together, then the white pattern will appear. In case of releasing the remote button, the black pattern will appear or in other case the volume bar (Volume down) appears.

  • Page 7: Service Mode Adjustment

    TX-29RX20M-MALAYSIA 3 Service Mode Adjustment 3.1. Service Mode Access 1. Set the timer ON. 2. Press remote’s RECALL ( ) and panel’s volume down key simultaneously to enter SERVICE 1. 3.2. Service Mode 1 Controls Key 3/4 Previous/Next Service 1 Item...

  • Page 8: Service Hints

    TX-29RX20M-MALAYSIA 4 Service Hints 4.1. 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 Fig. 2.

  • Page 9: Adjustment For Crt Cut Off

    TX-29RX20M-MALAYSIA 4.3. 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.

  • Page 10: Adjustment Of Purity

    TX-29RX20M-MALAYSIA 4.5. Adjustment of Purity 1. INSTRUMENTS a. Purity Jig b. Helmhortz device 2. PREPARATION a. Set the Helmhortz device to local magnetic field. Horizontal : 0 ± 0.03 × 10-4T b. Aging should have been performed over 60 minutes.
  • Page 11 TX-29RX20M-MALAYSIA ADJUSTMENT OF CONVERGENCE 1. INSTRUMENT a. Helmhortz device 2. PREPARATION a. Set the Helmhortz device to local magnetic field. Horizontal : 0 ± 0.03 × 10-4T b. Receive the crosshatch pattern. c. Picture menu : DYNAMIC Normal and adjust BRIGHT DAC until gray portion of crosshatch.
  • Page 12 TX-29RX20M-MALAYSIA FOCUS ADJUSTMENT 1. PREPARATION a. Receive crosshatch pattern E-4. b. Picture menu : DYNAMIC NORMAL For Philippines & Panamex model a. Receive the crosshatch pattern. ( US 6 ) b. Picture menu : DYNAMIC NORMAL 2. ADJUSTMENT a. Adjust focus VR for best position.
  • Page 13 TX-29RX20M-MALAYSIA DEFLECTION Note:- For Philippines model, all 50 Hz adjustment is made in AV mode. A . DEFLECTION ADJUSTMENT / CONFIRMATION (50 Hz, 4:3 Mode ONLY) (Service 1) 1. INSTRUMENT a. Helmhortz device 2. PREPARATION a. Set the Helmhortz device to local magnetic field.
  • Page 14 TX-29RX20M-MALAYSIA B . DEFLECTION ADJUSTMENT / CONFIRMATION (50 Hz, 4:3 Mode ONLY) (Service 1) 1. INSTRUMENT a. Helmhortz device 2. PREPARATION a. Set the Helmhortz device to local magnetic field. b. Picture menu : DYNAMIC Normal 3. CONFIRMATION AND ADJUSTMENT a.
  • Page 15 TX-29RX20M-MALAYSIA 4. ADJUSTMENT OF 50 Hz H-AMP a. Receive the monoscope pattern (E11). b. Adjust H-AMP so that both edges are within 2.5 ± 0.2. Refer to Fig. 1. Fig. 1 5. EW ADJUSTMENT / CONFIRMATION a. PREPARATION a. Receive crosshatch pattern (E4).
  • Page 16 TX-29RX20M-MALAYSIA (16:9 MODE) ADJUSTMENT / CONFIRMATION 1. V-ZOOM (16:9) ADJUSTMENT (Service 3) *a. Receive PAL monoscope pattern E11. (If no burst signal : Set to force PAL) b. Set the aspect to 16:9. c. Confirm that A, B in Fig. 1 is 4.0 cm ± 1.5, if not, adjust V-ZOOM.
  • Page 17 TX-29RX20M-MALAYSIA 1. Confirmation of deflection setting, if not in spec, touch up as below :- (Service 3) A) For 60 Hz (4:3 only) : a. Adjustment of 60 Hz V-CENTER a. Receive the monoscope pattern (US13). b. Adjust V-POS 60 Hz offset so that centre of monoscope pattern is at CRT centre.
  • Page 18 TX-29RX20M-MALAYSIA B) For other Deflection touch up 50 & 60 Hz ; 4:3 & 16:9 1. Adjustment of V-Sym a. Adjust V-SYM so that a=b in Fig. 1 Fig. 1 2. Adjustment of V-LIN a. Adjust V-LIN a=b=c=d in Fig. 2.
  • Page 19 TX-29RX20M-MALAYSIA 6. Adjustment of BOW a. Adjust BOW so that the vertical lines are straight. (Fig. 6) Fig. 6...

  • Page 20: Location Of Lead Wiring

    TX-29RX20M-MALAYSIA 5 Location of Lead Wiring 5.1. Wire Dressing...

  • Page 21: Wire Dressing And Connections

    TX-29RX20M-MALAYSIA 5.2. Wire Dressing and Connections < CONNECTIONS > LEAD \ CLAMPER AC CORD ~ A15 A1 ~ V1 G19 ~ A19 G13 ~ A13 DEG ~ A7 ROTATION ~ RT1 A4 ~ SP (L) A4 ~ SP (R) SW15 ~ A25...

  • Page 22: Conductor Views

    TX-29RX20M-MALAYSIA 6 Conductor Views...

  • Page 23: Schematic Diagram

    TX-29RX20M-MALAYSIA 7 Schematic Diagram Notes : 1. Resistor All resistors are carbon 1/4 W resistors unless marked as follows : Unit of resistance is OHM (Ω) (K = 1 000 M = 1 000 000) 2. Capacitor All capacitors are ceramic 50 V capacitors unless marked as follows : Unit of capacitance is µF unless otherwise noted.
  • Page 24 TX-29RX20M-MALAYSIA 8. When an arrow mark ( ) is found, connection is easily found from the direction of the arrow. : Indicates the major signal flow. 10. This schematic diagram is the latest at the time of printing and subject to change without notice.

  • Page 25: A Board

    TX-29RX20M-MALAYSIA 7.1. A Board 7.1.1. A Board (1/5) <1A> <2A> <3A> <4A> <5A> <6A> <7A> <8A>...
  • Page 26 TX-29RX20M-MALAYSIA 7.1.2. A Board (2/5) <1A> <1B> <2A> <2B> <3A> <4A> <5A> <6A> <7A> <3B> <4B> <5B> <6B> <8A> <7B>...
  • Page 27 TX-29RX20M-MALAYSIA 7.1.3. A Board (3/5) <1B> <1C> <2B> <2C> <3C> <4C> <3B> <5C> <4B> <6C> <5B> <7C> <6B> <7B> <8C>...
  • Page 28 TX-29RX20M-MALAYSIA 7.1.4. A Board (4/5) <1C> <1D> <2C> <2D> <3D> <4D> <3C> <4C> <5D> <6D> <5C> <6C> <7D> <7C> <8D> <8C> <9D>...
  • Page 29 TX-29RX20M-MALAYSIA 7.1.5. A Board (5/5) <1D> <2D> <3D> <4D> <5D> <6D> <7D> <8D> <9D>...

  • Page 30: L Board

    TX-29RX20M-MALAYSIA 7.2. L Board 7.2.1. L Board (1/3) <1A> <2A> <3A> <4A> <5A>...
  • Page 31 TX-29RX20M-MALAYSIA 7.2.2. L Board (2/3) <1A> <1B> <2A> <3A> <2B> <3B> <4A> <5A> <4B>...
  • Page 32 TX-29RX20M-MALAYSIA 7.2.3. L Board (3/3) <1B> <2B> <3B> <4B>...

  • Page 33: Board

    TX-29RX20M-MALAYSIA 7.3. V Board 7.3.1. V Board (1/2) <1A> <2A> <3A> <4A>...
  • Page 34 TX-29RX20M-MALAYSIA 7.3.2. V Board (2/2) <1A> <2A> <3A> <4A>...

  • Page 35: G Board

    TX-29RX20M-MALAYSIA 7.4. G Board 7.4.1. G Board (1/2) <1A> <2A> <3A> <4A> <5A> <6A> <7A> <8A> <9A>...
  • Page 36 TX-29RX20M-MALAYSIA 7.4.2. G Board (2/2) <1A> <2A> <3A> <4A> <5A> <6A> <7A> <8A> <9A>...

  • Page 37: K Board

    TX-29RX20M-MALAYSIA 7.5. K Board 7.5.1. K Board...

  • Page 38: Sw Board

    TX-29RX20M-MALAYSIA 7.6. SW Board 7.6.1. SW Board (1/2) <1A> <2A> <3A>...
  • Page 39 TX-29RX20M-MALAYSIA 7.6.2. SW Board (2/2) <1A> <2A> <3A>...

  • Page 40: Parts Locations

    TX-29RX20M-MALAYSIA 8 Parts Locations 8.1. Packing Exploded View - A...

  • Page 41: Packing Exploded View - B

    TX-29RX20M-MALAYSIA 8.2. Packing Exploded View - B...

  • Page 42: Parts Locations

    TX-29RX20M-MALAYSIA 8.3. Parts Locations...

  • Page 43: Replacement Parts List

    TX-29RX20M-MALAYSIA 9 Replacement Parts List Note : Printed circuit board assembly with “NLA” is no longer available after production discontinuation of the complete set. Abbreviation of part name and description 1. Resistor 2. Capacitor Example : Example : ERD25TJ104 C 100 kΩ, J, 1/4 W ECKF1H103ZF C 0.01 µF, Z, 50 V...
  • Page 44 TX-29RX20M-MALAYSIA 9.1. Replacement Parts List Ref. Part No. Part Name & Description Remarks C363 F2A1C101A310 E 100UF, 16V Ref. Part No. Part Name & Description Remarks C366 F2A1C470A310 E 47UF, 16V C368 ECA2EM100B E 10UF, 250V A68MAU085X43 C370 F1J1H222A590 C 2200PF, 50V...
  • Page 45 TX-29RX20M-MALAYSIA Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C654 ECJ1VF1H104Z C 0.1UF, Z, 50V D511 MA4108J DIODE C655 ECJ1VF1H104Z C 0.1UF, Z, 50V D512 B0HAJL000003 DIODE C656 ECJ1VC1H270J C 27PF, J, 50V...
  • Page 46 TX-29RX20M-MALAYSIA Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks L550 J0JKB0000034 EMI FILTER R1065 ERJ3GEYJ121 M 120OHM,J,1/16W L554 ELC08D682E CHOKE COIL R1066 ERJ3GEYJ152 M 1.5KOHM,J,1/16W L557 G0D320000003 LINEARITY COIL R1067 ERJ3GEYJ470 M 47OHM,J,1/16W...
  • Page 47 TX-29RX20M-MALAYSIA Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R368 ERDS1TJ152 C 1.5KOHM,J, 1/2W R644 ERJ3GEYJ103 M 10KOHM,J,1/16W R372 ERQ12AJ121P F 120OHM,J,1/2W R645 ERJ3GEYJ101 M 100OHM,J,1/16W R381 ERJ3GEYJ182 M 1.8KOHM,J,1/16W R646 ERJ3GEYJ183...
  • Page 48 TX-29RX20M-MALAYSIA Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks K1KA06AA0180 CONNECTOR RL831 K6B1CDA00028 RELAY K1KA06AA0659 CONNECTOR RM1062 B3RAD0000160 REMOCON RECEIVER K1KA02A00676 CONNECTOR K1KA03AA0190 CONNECTOR K1KA02A00720 CONNECTOR SC352 K3B09CA00014 CRT SOCKET K1KA04AA0190 CONNECTOR...

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