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.
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.
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.
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 ..
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.
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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.
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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.
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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.
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...
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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...
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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...
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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...
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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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