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Panasonic TC-21FX20RG Service Manual

Colour television
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Specifications
Power Source :
Power Consumption :
Aerial Impedance :
Receiving System :
Receiving Channels :
VHF
UHF
CATV
Audio Terminal :
DVD
AC AUTO 110-240V, 50/60 Hz
75Ω unbalanced
Coaxial type
17 Systems
2-12 PAL / SECAM B,K1
0-12 PAL B (N ZEALAND)
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.KI
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)
Z1-Z37 (CHINA)
5A,9A (AUSTRALIA)
S21-S41 (HYPER)
TC-21FX20RG
GL1 Chassis
58W
AV 1, 2
Monitor Out
Video Out
Audio Out
High Voltage :
Picture Tube :
Audio Output :
Dimensions :
Mass :
Specifications are subject to change without notice.
Mass and dimensions shown are approximate.
© 2006 Matsushita Electric Industrial Co., Ltd. All
rights
distribution is a violation of law.
ORDER NO. MTV0601483CE
Colour Television
Y
PB
PR
Video In
Audio In
reserved.
Unauthorized
1.0 Vp-p, 75Ω
0.7 Vp-p, 75Ω
0.7 Vp-p, 75Ω
1 Vp-p, 75Ω
Approx. 0.5V, 47kΩ
1 Vp-p, 75Ω
Approx. 0.5V, 1kΩ
27.5kV ±1.5
at zero beam current
A51LYZ295X
50.5cm (21 inches)
Measured diagonally,
90° deflection
16.0W
Height : 472 mm
Width : 648 mm
Depth : 488 mm
23 kg (Net Wt.)
copying
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Summary of Contents for Panasonic TC-21FX20RG

  • Page 1 ORDER NO. MTV0601483CE Colour Television TC-21FX20RG GL1 Chassis Specifications Power Source : AC AUTO 110-240V, 50/60 Hz 1.0 Vp-p, 75Ω Power Consumption : 0.7 Vp-p, 75Ω Aerial Impedance : 75Ω unbalanced 0.7 Vp-p, 75Ω Coaxial type AV 1, 2 Receiving System :...

  • Page 2: Table Of Contents

    TC-21FX20RG CONTENTS Page Page 1 Safety Precautions 2.4. Adjustment for CRT CUT OFF 1.1. General Guide Lines 2.5. Adjustment Procedure 1.2. Leakage Current Cold Check 2.6. Adjustment 1.3. Leakage Current Hot Check (Fig. 1) 3 Conductor Views 1.4. X-Radiation 4 Schematic Diagram 1.5.

  • Page 3: Safety Precautions

    TC-21FX20RG 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: Gl1 Chassis Block Diagram

    TC-21FX20RG 1.5. GL1 Chassis Block Diagram...

  • Page 5: Service Hints

    TC-21FX20RG 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 TC-21FX20RG d. After selecting the required option mode press Vol up / Vol down to adjust correct option. OSD will change to RED colour. Press digit “0” to memorize data. e. CHK2 Press digit key “2” to move forward to CHK2.
  • Page 7 TC-21FX20RG j. Press digit key “4” to move forward from V-SLOPE ------> V-SHIFT Press digit key “3” to move backward from V-SHIFT ------> V-SLOPE k. Press volume up / volume down to adjust required setting. l. CHK4 Press digit key “2” to move forward to CHK 4.

  • Page 8: Adjustment For White Balance

    TC-21FX20RG 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 9: Adjustment Procedure

    TC-21FX20RG 2.5. Adjustment Procedure 2.5.1. +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 10 : 141 ±...

  • Page 10: Adjustment

    TC-21FX20RG 2.6. Adjustment 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 11 TC-21FX20RG 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 12 TC-21FX20RG 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 13: Conductor Views

    TC-21FX20RG 3 Conductor Views...

  • Page 14: Schematic Diagram

    TC-21FX20RG 4 Schematic Diagram...
  • Page 15 TC-21FX20RG...

  • Page 16: A Board

    TC-21FX20RG 4.1. A Board 4.1.1. A Board (1/5) <1A> <2A> <3A> <4A> <5A> <6A> <7A> <8A> <9A>...
  • Page 17 TC-21FX20RG 4.1.2. A Board (2/5) <1A> <1B> <2A> <2B> <3A> <4A> <3B> <4B> <5B> <5A> <6A> <6B> <7A> <8A> <9A> <7B>...
  • Page 18 TC-21FX20RG 4.1.3. A Board (3/5) <1B> <1C> <2C> <2B> <3B> <3C> <4B> <5B> <4C> <5C> <6B> <6C> <7C> <7B> <8C>...
  • Page 19 TC-21FX20RG 4.1.4. A Board (4/5) <1C> <1D> <2C> <2D> <3D> <4D> <3C> <5D> <6D> <4C> <5C> <6C> <7D> <8D> <7C> <9D> <8C>...
  • Page 20 TC-21FX20RG 4.1.5. A Board (5/5) <1D> <2D> <3D> <4D> <5D> <6D> <7D> <8D> <9D>...

  • Page 21: L Board

    TC-21FX20RG 4.2. L Board 4.2.1. L Board (1/3) <1A> <2A> <3A> <4A> <5A>...
  • Page 22 TC-21FX20RG 4.2.2. L Board (2/3) <1A> <1B> <2A> <3A> <4A> <2B> <3B> <4B> <5B> <5A> <6B>...
  • Page 23 TC-21FX20RG 4.2.3. L Board (3/3) <1B> <2B> <3B> <4B> <5B> <6B>...

  • Page 24: Parts Locations

    TC-21FX20RG 5 Parts Locations...

  • Page 25: Replacement Parts List

    TC-21FX20RG 6 Replacement Parts List...

  • Page 26: Replacement Parts List

    TC-21FX20RG 6.1. Replacement Parts List Ref. Part No. Part Name & Description Remarks C360 ECKW3D102KBP C 1000PF, K, 2KV Ref. Part No. Part Name & Description Remarks C402 F2A1V101A246 E 100UF, 35V C404 ECQB1333JF P 0.033UF, J, 100V A51LYZ395X22 C406...
  • Page 27 TC-21FX20RG Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C827 ECQB1H473JF P 0.047UF, J, 50V D864 B0BA03300030 DIODE C830 F0A1H182A040 P 1800PF, 50V D865 B0BA3R500008 DIODE C840 F1A2E152A001 C 1500PF, 240V D872...
  • Page 28 TC-21FX20RG Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R1059 ERJ3GEYJ621 M 620OHM,J,1/16W R414 ERJ3GEYJ432 M 4.3KOHM,J,1/16W R1060 ERJ3GEYJ683 M 68KOHM,J,1/16W R415 D1AC7500A094 M 750OHM, 1/10W R1104 ERJ3GEYJ332 M 3.3KOHM,J,1/16W R416 ERX1SJR56E M 0.56OHM, J, 1W...
  • Page 29 TC-21FX20RG Ref. Part No. Part Name & Description Remarks R860 ERQ14AJ220P F 22OHM,J, 1/4W R861 ERDS1TJ101 C 100OHM,J, 1/2W R862 ERJ6ENF1203 F 120KOHM,J, 1/8W R863 ERX2FJ4R7H M 4.7KOHM,J, 2W R864 ERJ3GEYJ122 M 1.2KOHM,J,1/16W R865 ERJ6ENF4022 F 40.2KOHM,J, 1/8W R866 ERX2SJ7R5E M 7.5OHM,J, 2W...

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