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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-21FG20R
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. MTV0501367C3
Colour Television
33.75 MHz (SECAM)
Audio In Approx. 400mVrms
Video Out 1 Vp-p 75Ω
Audio Out Approx. 400mVrms
at zero beam current
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)
AV1, 2
Video In 1 Vp-p 75Ω
27.5kV±1.5
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-21FG20R

  • Page 1 ORDER NO. MTV0501367C3 Colour Television TX-21FG20R 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)
  • Page 2: Table Of Contents

    TX-21FG20R 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-21FG20R 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-21FG20R 1.5. GP31 Chassis Block Diagram...
  • Page 5: Service Hints

    TX-21FG20R 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-21FG20R 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-21FG20R 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-21FG20R 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-21FG20R 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-21FG20R 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-21FG20R 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-21FG20R 3 Conductor Views...
  • Page 13: Schematic Diagram

    TX-21FG20R 4 Schematic Diagram...
  • Page 14 TX-21FG20R...
  • Page 15: A Board

    TX-21FG20R 4.1. A Board 4.1.1. A Board (1/6) <A1> <A2> <A3> <A4> <A5> <A6>...
  • Page 16 TX-21FG20R 4.1.2. A Board (2/6) <A1> <B1> <A2> <B2> <B3> <A3> <A4> <B4> <B5> <A5> <B6> <A6>...
  • Page 17 TX-21FG20R 4.1.3. A Board (3/6) <C1> <B1> <B2> <B3> <C2> <C3> <B4> <C4> <B5> <B6> <C5>...
  • Page 18 TX-21FG20R 4.1.4. A Board (4/6) <C1> <D1> <D2> <C2> <C3> <D3> <C4> <D4> <C5>...
  • Page 19 TX-21FG20R 4.1.5. A Board (5/6) <D1> <E1> <D2> <D3> <E2> <E3> <D4>...
  • Page 20 TX-21FG20R 4.1.6. A Board (6/6) <E1> <E2> <E3>...
  • Page 21: L Board

    TX-21FG20R 4.2. L Board 4.2.1. L Board (1/3) <A1> <A2> <A3> <A4> <A5>...
  • Page 22 TX-21FG20R 4.2.2. L Board (2/3) <A1> <B1> <A2> <B2> <A3> <B3> <B4> <B5> <A4> <A5> <B6>...
  • Page 23 TX-21FG20R 4.2.3. L Board (3/3) <B1> <B2> <B3> <B4> <B5> <B6>...
  • Page 24: Parts Locations

    TX-21FG20R 5 Parts Locations...
  • Page 25: Replacement Parts List

    TX-21FG20R 6 Replacement Parts List...
  • Page 26: Replacement Parts List

    TX-21FG20R 6.1. Replacement Parts List Ref. Part No. Part Name & Description Remarks C2124 ECA1CM100B E 10UF, 16V Ref. Part No. Part Name & Description Remarks C2125 ECJ2VF1C105Z C 1UF, Z, 16V C2128 ECA1CM101B E 100UF, 16V A51LXR195X PICTURE TUBE...
  • Page 27 TX-21FG20R Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C606 ECJ2VC1H222J C 2200PF, J, 50V D1120 B0ACQJ000001 DIODE C607 F2A1H1R0A145 E 1UF, 50V D1130 MTZJ5.6C ZENER DIODE C608 F2A1H100A145 E 1UF, 50V D1131 MTZJ5.6C...
  • Page 28 TX-21FG20R Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks L002 EXC3BB221H CHIP BEAD CORE R1017 ERJ6ENF2151 M2.15KOHM, 1/10W L1101 TALV35VB331K PEAKING COIL R1018 ERJ6ENF3091 M3.09KOHM, 1/10W L120 TLTACTR56K PEAKING COIL R1019 ERJ6ENF4421 M4.42KOHM, 1/10W...
  • Page 29 TX-21FG20R Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R3015 D0GD101JA017 F 100OHM,J, 1/10W R586 D0GD103JA017 F 10KOHM,J, 1/10W R3018 D0GD750JA017 F 75KOHM,J, 1/10W R587 D0GD823JA017 F 82KOHM,J, 1/10W R3022 D0GD101JA017 F 100OHM,J, 1/10W...
  • Page 30 TX-21FG20R Ref. Part No. Part Name & Description Remarks ERJ6GEY0R00 M 0OHM,J,1/10W ERJ6GEY0R00 M 0OHM,J,1/10W ERJ6GEY0R00 M 0OHM,J,1/10W ERJ6GEY0R00 M 0OHM,J,1/10W ERJ6GEY0R00 M 0OHM,J,1/10W ERJ6GEY0R00 M 0OHM,J,1/10W JK3002 K4BK09B00011 AV TERMINAL JK3003 K4BK07B00010 AV TERMINAL JK3102 K4BC14B00004 FRONT AV TERMINAL...

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