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Service Manual
Specifications
Power Source : AC AUTO 110-240V, 50/60Hz
Power Consumption : 86W
Aerial Impedance:75 unbalanced
Coaxial type
Receiving System : 17 System
Receiving Channels :
VHF
2-12 (PAL/SECAM B,K1)
0-12 (PAL B AUST)
1-9
(PAL B N.Z)
1-12 (PAL/SECAM D)
1-12 (NTSC M JAPAN)
2-13 (NTSC M U.S.A)
UHF
21-69 (PAL G,H,I/SECAM G,K,K1)
28-69 (PAL B AUST)
13-57 (PAL D,K)
13-62 (NTSC M JAPAN)
14-69 (NTSC M U.S.A)
CATV
S1-S41(OSCAR)
1-125 (U.S.A CATV)
C13-C41(JAPAN)
S21-S41 (HYPER)
Z1-Z37 (CHINA)
Intermediate Frequency :
Video
38.0 MHz
Sound
31.5 MHz (D,K) / 32.5MHz (B,G)
32.0 MHz (I) / 33.5MHz (M)
Colour
33.57 MHz (PAL)
33.6 MHz (SECAM)
32.5 MHz (B,G)
33.75 MHz (SECAM)
34.42 MHz (NTSC)
Panasonic
Ω
ORDER NO. MTV 0010154C3
TX-21PM30T
MX-7 Chassis
Video / Audio Terminals :
FAV In : Video In 1 Vp-p 75
Audio In Approx, 400mVrms
RAV In : Video In 1 Vp-p 75
Audio In Approx, 400mVrms
Monitor Out :Video Out1 Vp-p 75
Audio OutApprox, 400mVrms
High Voltage : 28.0 kV ( +/- 1.0 )
at zero beam current
Picture Tube : A51LSK955X-A
51cm (21 inches)
Measured diagonally, 90 deflection
Audio Output : 3.5W x 2 = 7W
Dimensions : Height : 473.6 mm
Width : 600.0 mm
Depth : 484.4 mm
Mass : 23.4 kg
Specifications are subject to change without
notice.Mass and dimensions shown are approxi
mate.
2000 Matsushita Electric Industrial Co., Ltd.
c
All right reserved.Unauthorized copying and
distribution is a violation of law.
Colour Television
Ω
Ω
Ω
°
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Related Manuals for Panasonic TX-21PM30T
Summary of Contents for Panasonic TX-21PM30T
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Page 1: Service Manual
ORDER NO. MTV 0010154C3 Service Manual Colour Television TX-21PM30T MX-7 Chassis Specifications Power Source : AC AUTO 110-240V, 50/60Hz Video / Audio Terminals : Ω FAV In : Video In 1 Vp-p 75 Power Consumption : 86W Audio In Approx, 400mVrms Ω... -
Page 2: Table Of Contents
WARNING This service literature is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warning cautions to advise non-technical individuals of potential dangers in attempting to service a product. Product powered by electricity should be serviced or repaired only by experienced professional technicians. -
Page 3: Safety Precautions
Safety Precautions 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 circuits is found, replace all parts which have been overheated or damaged by the short circuit. -
Page 4: Chassis Block Diagram
TX-21PM30T Fig. 1 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 jig is capable of handling 28.0kV without causing X-Radiation. Note: It is important to use an accurate periodically calibrated high voltage meter. -
Page 5: Service Hints
Service Hints. Service Position for E-Board 1. Remote the back cover. 2. Stand the TV set as shown in fig. 7. 3. Remove the A-Board from the TV set by pulling the main board out as shown in figure 7. Pull out this way Fig.7 Factory mode adjustment :... - Page 6 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 to DYNAMIC NORMAL. 3. Degause the CRT face. 4. Fix the CRT colour analyzer receiver unit to CRT face. Adjustment of Low Light.
- Page 7 Adjustment Procedure Item / Preparation Adjustment Procedure +B Voltage 1. Operate the TV set. Confirm the DC voltage at the indicated test points, as follow : 2. Set control as follow : TPA 12 : 141.2 +- 0.8V TPA 21 : 215 +- 15V Brightness ..
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Page 8: Adjustments
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 - 63 , Sub Contrast - 21. 3. Channel colour set ----------- STD. 4. - Page 9 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 1. Apply a crosshatch pattern signal and their maximum postions. Normalize Contrast control to the 2.
- Page 10 R-B Static Convergence Magnet 25.3 mm Clamp for Convergence & Purity Magnet Purity Magne (RB)-G Static Convergence Magnet Deflection Yoke Fig. 24 Fig. 25 Note : 1. Wedge A,B and C should be inserted following the sequence of 1,2 and 3 shown in Fig.
- Page 11 TX-21PM30T 3 L-BOARD TNP4G137AA...
- Page 12 TX-21PM30T 4 Z1-BOARD TNP4G139AA...
- Page 13 TX-21PM30T 5 A-BOARD TNP4G136BC...
- Page 14 TX-21PM30T 6 Schematic Diagram for models TX-21PM30T (MX-7 Chassis) IMPORTANT SAFETY NOTICE Components identified by ! mark have special characteristics important for safety. When replacing any of these components, use only manufacturer’s specified parts. Notes: 1. Resistor All resistors are carbon 1.4W resistors unless marked as follows: Unit of resistance is OHM (Ω) (K=1 000 M=1 000 000)
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Page 20: Parts Location
TX-21PM30T 9.3. Part Location (1/2) - Page 21 TX-21PM30T 9.4. Part Location (2/2)
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Page 22: Replacement Part List
TX-21PM30T 10 Replacement Parts List Important Safety Notice Components identified by ! mark have special characteristics important for safety. When replacing any of these components, use manufacturer’s specified parts. Note: Printed circuit board assembly with “NLA” is no longer available after production discontinuation of the complete set. -
Page 23: Replacement Parts List
Replacement Parts List Important Safety Notice ∆ Components identified by mark have special characteristics important for safety. When replacing any of these components, use manufacturer’s specified parts. 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. - Page 24 M 1KOHM,F, 1/4W KDY3NWB63F DEFLECTION YOKE R352 ER0S2CKF1001 M 1KOHM,F, 1/4W TBL4G3404 SET LEG R353 ER0S2CKF1001 M 1KOHM,F, 1/4W TBMA060 PANASONIC BADGE R354 ER0S2CKF7870 M 787OHM,F, 1/4W TBM4G0660 MODEL NAME PLATE R355 ER0S2CKF7870 M 787OHM,F, 1/4W TBX4G86500A 6 KEY BUTTON R356 ER0S2CKF7870...
- Page 25 R605 ERJ6GEYJ101 M 100OHM,J,1/10W R811 ERJ6GEYJ681 M 680OHM,J,1/10W R606 ERJ6GEYJ101 M 100OHM,J,1/10W R812 ERD75TAJ825 C 8.2MOHM,J, 3/4W R607 ERJ6GEYJ103 M 10KOHM,J,1/10W R814 ERJ6GEYJ332 M 3.3KOHM,J,1/10W R608 ERJ6GEYJ332 M 3.3KOHM,J,1/10W R815 ERJ6GEYJ102 M 1KOHM,J,1/10W R609 ERJ6GEYJ332 M 3.3KOHM,J,1/10W R817 ERG5FJ183H M 18KOHM,J, 5W R610 ERJ6GEYJ103 M 10KOHM,J,1/10W R819 ERJ12YJ330U...
- Page 26 R2404 ERJ6GEYJ681 M 680OHM,J,1/10W C560 ECQM4273JZ P 0.027UF, 400V R2405 ERJ6GEYJ684 M 680KOHM,J,1/10W C561 ECKW3D331JBP C 330PF, J, 2KV R2406 ERJ6GEYJ334 M 330KOHM,J,1/10W C562 ECKW3D471JBP C 470PF, J, 2KV R2407 ERJ6GEYJ333 M 33KOHM,J,1/10W C563 ECWF2224JSR P 0.22UF, J,250V R2408 ERJ6GEYJ683 M 68KOHM,J,1/10W C565 ECQP1H183JZ P 0.018UF, J, 50V...
- Page 27 C841 ECJ2YB1A824K C 0.82UF, K, L501 ELH5L4129 LINEARITY COIL C851 ECJ2ZF1C105Z 1UF, Z, 16V L550 EXCELDR25V CORE C852 ECKW3D101KBP C 100PF, K, 2KV L551 TSK1045 BEAD CORE C853 ECKR2H151KB5 C 150PF, K,500V L552 TSK1045 BEAD CORE C854 ECQB1H104JM P 0.1UF, L620 TSK1045 BEAD CORE C855 ECJ2ZF1C105Z...
- Page 28 D824 MA4068M DIODE Q853 2SC2412KT TRANSISTOR D831 FMLG16S DIODE Q854 2SC2412KT TRANSISTOR D837 S3L60P1520 DIODE Q855 2SC1815 TRANSISTOR D852 AU02A DIODE Q856 2SC2412KT TRANSISTOR D853 MCR22-6 THYRISTOR Q1101 2SC2412KT TRANSISTOR D854 D1FL20UF4063 DIODE Q2380 DTD113ZKT TRANSISTOR D855 D1FL20UF4063 DIODE Q2381 2SA1037AKT TRANSISTOR D856 RN1ZLF-A1 DIODE...
- Page 29 X2201 SFSH6R0MDB CERAMIC FILTER X2202 EFCS5R5MS5 CERAMIC FILTER X2203 EFCS6R5MS5 CERAMIC FILTER X2204 EFCS4R5MS5 FILTER Z9 TJS4G8080 20P CONNECTOR Z22 TJS1A8100 PHONO PIN...
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