Panasonic TX-21JT3P Service Manual
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Panasonic TX-21JT3P Service Manual

Z-m3l chassis
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Service Manual
SPECIFICATIONS
Power Source:
Power Consumption:
Stand-by Power Consumption: 1W
Receiving System:
Receiving Channels:
Intermediate Frequency:
Video/Audio
Colour Television
Z-M3L Chassis
TX-21JT3P
220 - 240V A.C., 50Hz
60W
PAL B/G, D/K, 525/60
SECAM B/G, D/K
M.NTSC
NTSC (AV only)
VHF E2-E12
VHF H1-H2 (ITALY)
VHF A-H (ITALY)
VHF R1-R2
VHF R3-R5
VHF R6-R12
UHF E21-E68
CATV (S01-S05)
CATV S1-S10 (M1-M10)
CATV S11-S20 (U1-U10)
CATV S21-S41 (HYPERBAND)
Video
38.9MHz, 34MHz
Audio
32.9MHz, 33.16MHz, 33.4MHz
Colour
34.47MHz (PAL)
34.5MHz, 34.65MHz (SECAM)
ORDER No. SM-04019
Video/Audio Terminals:
AV1 IN
Video (21 pin)
Audio (21 pin)
RGB (21 pin)
Audio (RCA x 1) 500mV rms 10KΩ
Video (RCA x 1) 1V p-p
AV1 OUT Video (21 pin)
Audio (21 pin)
Picture Tube:
A51LZM10X16N45 51cm
High Voltage:
29 ± 1kV
Audio Output:
20W
(Music Power)
8Ω
Headphones:
8Ω Impedance
3.5mm
Accessories:
Remote Control
2 x R6 (UM3) Batteries
Dimensions:
Height:
482 mm
Width:
506 mm
Depth:
484 mm
Net Weight:
20kg
NOTE:
Specifications are subject to change without notice.
Weights and dimensions shown are approximate.
1V p-p
75Ω
500mV rms 10KΩ
75Ω
1V p-p
75Ω
Ω
500mV rms 10K

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Summary of Contents for Panasonic TX-21JT3P

  • Page 1 ORDER No. SM-04019 Service Manual Colour Television Z-M3L Chassis TX-21JT3P SPECIFICATIONS Power Source: 220 - 240V A.C., 50Hz Video/Audio Terminals: Power Consumption: AV1 IN Video (21 pin) 1V p-p 75Ω Audio (21 pin) 500mV rms 10KΩ Stand-by Power Consumption: 1W RGB (21 pin) Audio (RCA x 1) 500mV rms 10KΩ...

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ................................. 2 SERVICE HINTS..................................3 ALIGNMENT PROCEDURE ..............................4 WAVEFORMS................................... 5 BLOCK DIAGRAM ..................................7 PARTS LOCATION................................... 8 REPLACEMENT PARTS LIST..............................9 SCHEMATIC DIAGRAMS............................... 13 PCB CONDUCTOR VIEWS..............................18 SAFETY PRECAUTIONS GENERAL GUIDE LINES It is advisable to insert an isolation transformer in the Check each exposed metallic part and check the a.c.

  • Page 3: Service Hints

    SERVICE HINTS How to remove the rear cover 1. Remove the 5 screws as shown in Fig.2. SCREWS SCREWS Fig. 2. LOCATION OF CONTROLS AV Board CRT Board Main Board Focus Screen...

  • Page 4: Alignment Procedure

    ALIGNMENT PROCEDURE AND OPTION SETTING Self Check Mode To enter self check mode, set the programme position to Channel 99. Set sharpness to a minimum, press the status button ( ) on the remote contol whilst simultaneously pressing the down button ( ) at the front of the set.

  • Page 5: Waveforms

    WAVEFORMS MICON/CHROMA 20µs 20µs 0.5V 20µs 20µs 20µs 20µs 20µs 20µs 20µs 20µs 0.5V DEFLECTION/CRT 20µs 20µs 0.5V NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 6 WAVEFORMS 20µs 20µs SOUND AMP/21PIN 200mV 0.5V NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 8: Parts Location

    PARTS LOCATION NOTE: The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List. This diagram is used for representative purposes only.

  • Page 9: Replacement Parts List

    701WPJC669 CABINET D507 MTZJ18BT-77 ZENER DIODE 713WPBA006 AV COVER D508 D28T21DQN9 DIODE 722576A040 MODEL LABEL D509 1N4937 DIODE 7235760001 PANASONIC BADGE D510 D28F30DF60 DIODE 735WPAA490 POWER BUTTON D511 MTZJ18BT-77 ZENER DIODE 8R200015 DEGAUSS COIL D512 D2WXN49370 DIODE A3L935X740 BACKCOVER D513...
  • Page 10 Cct Ref Parts Number Description Cct Ref Parts Number Description Q602 2SC2412KT146 TRANSISTOR R113 ERJ6GEYJ101 S.M.CARB 0.1W 100 Ω Q606 2SC2412KT146 TRANSISTOR R114 ERJ6GEYJ101 S.M.CARB 0.1W 100 Ω Q607 2SC2412KT146 TRANSISTOR R115 ERJ6GEYJ221 S.M.CARB 0.1W 220 Ω Q608 2SA1037AKT14 TRANSISTOR R116 ERJ6GEYJ153 S.M.CARB...
  • Page 11 Cct Ref Parts Number Description Cct Ref Parts Number Description R605 ERJ6GEYJ561 S.M.CARB 0.1W 560 Ω R806 ERJ6GEYJ101 S.M.CARB 0.1W 100 Ω R606 ERJ6GEYJ562 S.M.CARB 0.1W 5K6 Ω R807 ERJ6GEYJ102 S.M.CARB 0.1W 1K Ω R607 ERJ6GEYJ102 S.M.CARB 0.1W 1K Ω R808 ERJ6GEYJ102 S.M.CARB...
  • Page 12 Cct Ref Parts Number Description Cct Ref Parts Number Description C535 CD39E0MH3M CAPACITO 250V 2.2nF J702 AV1-06D-3 RCA JACK C541 ECA1EM102E ELECT J703 AV1-06D-4 RCA JACK C601 ECQV1H224JL3 FILM 220nF J801 CVT3275-5101 C.R.T. SOCKET C602 ECA1CM101B ELECT 100µF J1001 HTJ-035-28A RCA JACK C603 CS0RB0315K...

  • Page 13: Schematic Diagrams

    SCHEMATIC DIAGRAMS FOR MODEL TX-21JT3P (Z-M3L CHASSIS) IMPORTANT SAFETY NOTICE Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacturers' specified parts. NOTE RESISTOR All resistors are carbon ¼W resistor, unless marked otherwise.
  • Page 14 MICON/CHROMA SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO DEFLECTION/CRT B.OUT G.OUT R.OUT ICATH H_OUT H.PLUSE L101 FROM/TO SOUND AMP/21PIN B-IN 10uH 0305 G_IN R_IN C_IN EXT_A_IN OS101 R101 R102 R103 R104 F_BLANK PIC-37142SY FRONT_V_IN BUFFER EXT_V_OUT Q608 EXT_A_OUT 2SA1037AK R642 220K R621 C641 S801Y C122...
  • Page 15 SOUND AMP/21PIN SCHEMATIC DIAGRAM (MAIN PCB) C709_1 C704 0.001 CH 21PIN J701 0350_9982_05 BT001 R701 L701 R6RC/2P 10uH R702 L705_1 10uH R714 W810 2.2K TM101 C702 076G0FL01Z R706 0.001 CH R703 1K 1/4W 330K 1/4W R707 SOUND AMP IC R715 1K 1/4W IC1001 AN7523...
  • Page 16 DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) (CRT PCB) CP802A CP802B B2013H02-5P B2013H02-5P FROM MICON/CHROMA G.OUT G.OUT G.OUT R.OUT R.OUT R.OUT B.OUT B.OUT B.OUT ICATH ICATH ICATH VIDEO AMP IC801 TDA6107Q (CD803A) (CD803B) CD803 CH243401 180V 180V V.OUTPUT IC IC401 TDA8357J D402 HEATER HEATER AU02A-EIC...
  • Page 17 POWER SCHEMATIC DIAGRAM (MAIN PCB) Q503 Q509 KTC3209_Y KTC3209_Y TO SOUND AMP/21PIN SOUND+B R505 R538 P.CON+8V Q501 100 1/4W KTC3209_Y D532 SOUND_GND 270 1/4W 1N4005-EIC R507 C516 W819 D533 1/4W 500V 470P FROM/TO DEFLECTION/CRT 1N4005-EIC D505 H.DRV+B 21DQ09N D510_1 D524 Q506 30DF6-FC D508...

  • Page 18: Pcb Conductor Views

    PRINTED CIRCUIT BOARDS MAIN/CRT/AV (INSERTED PARTS) SOLDER SIDE SW501 FH502 F501 FH501 CP402 C535 CP501 R506 R504 C501_2 D101 R522 R523 C507 L501 R503 D507 D509 W017 W062 OS101 C509 Q502 W034 TH501 D525 W033 W007 R524 T502 D520 T501 C526_2 D402 D512...
  • Page 19 PRINTED CIRCUIT BOARDS MAIN/CRT/AV (CHIP MOUNTED PARTS) SOLDER SIDE R652 R609 C650 Q602 R610 C656 R806 IC199 R656 R805 C108 Q609 C648 R804 C001 R005 R008 R110 C655_1 C618 R111 C617 R608 R606 R605 Q601 C606 R607 R651 Q606 R627 R623 R704 Q607...

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