Panasonic TX-21FG50M-SINGAPORE Service Manual
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Panasonic TX-21FG50M-SINGAPORE Service Manual

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Specifications
Power Source :
Power Consumption :
Aerial Impedance :
Receiving System :
Receiving Channels :
VHF
UHF
CATV
Intermediate Frequency :
Video
Sound
AC AUTO 110-240V, 50/60 Hz
75Ω unbalanced
Coaxial type
17 Systems
1-11 PAL B (Australia & N.Zealand)
1-12 PAL/SECAM D
1-12 NTSC M JAPAN
2-12 PAL/SECAM B, G
2-13 NTSC M U.S.A.
21-69 PAL G I/SECAM B, G, K1
28-69 PAL G (Australia)
13-56 PAL D
13-52 NTSC M JAPAN
14-69 NTSC NTSC M U.S.A.
S1-S41 (Hyper)
38.0 MHz
31.5 MHz (D, K, K1)
32 MHz (I)
32.5 MHz (B, G)
33.5 MHz (M)
TX-21FG50M-
SINGAPORE
GP31 Chassis
Colour
83W
Video / Terminals :
RAV In
Monitor Out
High Voltage :
Picture Tube :
Audio Output :
Dimensions :
Mass :
Specifications are subject to change without notice.
Mass and dimensions shown are approximate.
ORDER NO. MTV0501364C3
Colour Television
33.75 MHz (SECAM)
AV 1, 2, YUV, MONITOR OUT
Audio In Approx. 400mVrms
Video Out 1 Vp-p 75Ω
Audio Out Approx. 400mVrms
Measured diagonally,
© 2005 Matsushita Electric Industrial Co., Ltd. All
rights
reserved.
Unauthorized
distribution is a violation of law.
33.57 MHz (PAL)
33.6 MHz (SECAM)
34.42 MHz (NTSC)
Video In 1 Vp-p 75Ω
27.5kV ±1.5
at zero beam current
A51LXR195X
51cm (21 inches)
90° deflection
16.0W
Height : 473 mm
Width : 648 mm
Depth : 488 mm
24 kg (Net Wt.)
copying
and

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Summary of Contents for Panasonic TX-21FG50M-SINGAPORE

  • Page 1 ORDER NO. MTV0501364C3 Colour Television TX-21FG50M- SINGAPORE GP31 Chassis Specifications Power Source : AC AUTO 110-240V, 50/60 Hz Colour 33.57 MHz (PAL) Power Consumption : 33.6 MHz (SECAM) Aerial Impedance : 75Ω unbalanced 33.75 MHz (SECAM) Coaxial type 34.42 MHz (NTSC) Receiving System : 17 Systems Video / Terminals :...

  • Page 2: Table Of Contents

    TX-21FG50M-SINGAPORE CONTENTS Page Page 1 Safety Precautions 2.5. Adjustment Procedure 1.1. General Guide Lines 2.6. PAL Colour 1.2. Leakage Current Cold Check 2.7. Adjustment 1.3. Leakage Current Hot Check (Fig. 1) 3 Conductor Views 1.4. X-Radiation 4 Schematic Diagram 1.5. GP31 Chassis Block Diagram 4.1.

  • Page 3: Safety Precautions

    TX-21FG50M-SINGAPORE 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.

  • Page 4: Gp31 Chassis Block Diagram

    TX-21FG50M-SINGAPORE 1.5. GP31 Chassis Block Diagram...

  • Page 5: Service Hints

    TX-21FG50M-SINGAPORE 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.

  • Page 6: Adjustment For White Balance

    TX-21FG50M-SINGAPORE 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. Degausse the CRT face. 4. Fix the CRT colour analyzer receiver unit to CRT face.

  • Page 7: Adjustment Procedure

    TX-21FG50M-SINGAPORE 2.5. Adjustment Procedure 2.5.1. +B Voltage 2.5.3. High Voltage Item / preparation Item / preparation 1. Operate the TV set. 1. Receive the crosshatch pattern. 2. Set control as follows : 2. Set to 0 Beam. Brightness ... minimum Screen VR ..

  • Page 8: Pal Colour

    TX-21FG50M-SINGAPORE 2.6. PAL Colour 1. Receive the PAL B/G studio colour bar pattern and adjust local frequency at the best tuned position. 2. Pic Menu: Dynamic Normal, Confirm Contrast - 100 DAC, Sub Contrast - 21 dac. 3. Channel colour set --------- STD 4.
  • Page 9 TX-21FG50M-SINGAPORE Before Colour Purity, Convergence and White Balance adjustment are attempted, V. Height, H. Centre and Focus adjustments must be completed. Colour Purity Convergence 1. Set the Brightness and Contrast controls to their maximum 1. Apply a crosshatch pattern signal and Normalize Contrast positions.
  • Page 10 TX-21FG50M-SINGAPORE Adjustment of CRT VRS 1. Preparation a. Set DY to CRT not to tilt up and down left and right deflection. b. Set CY to CRT and set CY magnet primarily (Fig. 1) Purity magnet : Set purity magnet that 2 magnets are (TOP POSITION) VRS magnet : Set purity magnet 2 magnets are (HORIZONTAL POSITION) 2.
  • Page 11 TX-21FG50M-SINGAPORE Fig. 10 Fig. 11 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.

  • Page 12: Conductor Views

    TX-21FG50M-SINGAPORE 3 Conductor Views...

  • Page 13: Schematic Diagram

    TX-21FG50M-SINGAPORE 4 Schematic Diagram...
  • Page 14 TX-21FG50M-SINGAPORE...

  • Page 15: A Board

    TX-21FG50M-SINGAPORE 4.1. A Board 4.1.1. A Board (1/5)
  • Page 16 TX-21FG50M-SINGAPORE 4.1.2. A Board (2/5)
  • Page 17 TX-21FG50M-SINGAPORE 4.1.3. A Board (3/5)
  • Page 18 TX-21FG50M-SINGAPORE 4.1.4. A Board (4/5)
  • Page 19 TX-21FG50M-SINGAPORE 4.1.5. A Board (5/5)

  • Page 20: L Board

    TX-21FG50M-SINGAPORE 4.2. L Board 4.2.1. L Board (1/3)
  • Page 21 TX-21FG50M-SINGAPORE 4.2.2. L Board (2/3)
  • Page 22 TX-21FG50M-SINGAPORE 4.2.3. L Board (3/3)

  • Page 23: Parts Locations

    TX-21FG50M-SINGAPORE 5 Parts Locations...

  • Page 24: Replacement Parts List

    TX-21FG50M-SINGAPORE 6 Replacement Parts List...

  • Page 25: Replacement Parts List

    TX-21FG50M-SINGAPORE 6.1. Replacement Parts List Ref. Part No. Part Name & Description Remarks C2114 ECJ2VF1H104Z C 0.1UF, Z, 50V Ref. Part No. Part Name & Description Remarks C2115 ECA1HM4R7B E 4.7UF, 50V C2117 ECA1CM101B E 100UF, 16V A51LXR195X PICTURE TUBE...
  • Page 26 TX-21FG50M-SINGAPORE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C565 ECQP1H183JZ P 0.018UF, J, 50V C880 ECA1CM102B E 1000UF, 16V C566 ECQM4103RJZ P 0.01UF, J, 400V C881 ECA1CM101B E 100UF, 16V C567 ECQM4393JZ P 0.039UF, J,400V...
  • Page 27 TX-21FG50M-SINGAPORE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks IC2301 AN17820B Q857 B1BAAN000029 TRANSISTOR IC351 TDA6107JF/N3 Q870 B1ABCE000015 TRANSISTOR IC451 AN15525A Q871 B1ABCE000015 TRANSISTOR IC601 TDA9594N96DC RESISTORS IC801 C5HABZZ00116 IC, POWER SUPPLY...
  • Page 28 TX-21FG50M-SINGAPORE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R145 D0GD473JA017 F 47KOHM,J, 1/10W R415 ER0S2CHF7500 M 750OHM,J, 1/4W R150 D0GD222JA017 F 2.2KOHM,J, 1/10W R416 ERDS1TJ1R2 C 1.2OHM,J, 1/2W R151 D0GD333JA017 F 33KOHM,J, 1/10W...
  • Page 29 TX-21FG50M-SINGAPORE Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R841 D0GD472JA017 F 4.7KOHM,J, 1/10W SW801 ESB92DA1B SWITCH R842 D0GD472JA017 F 4.7KOHM,J, 1/10W TU001 J3AAAAZ00004 TUNER R850 ERG3SJS470H M 47OHM, J , 3W...

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