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Panasonic

The service technician is required to read and follow the “Safety Precautions” and “Important Safety Notice” in this Main Manual.

Service

 

Manual

Color Television

(NA6LV)

Main Manual

Copyright 2000 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.

WARNING! This Service Manual is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the product or products dealt with in this Service Manual by anyone else could result in serious injury or death.” 

Chassis

CT-25G5B

AP356M

CT-25G5UB

AP356M

Models

ORDER NO. MTNC000664A1
B5

This Simplified Service Manual is issued to add listed models to the main Service Manual order No.
MTNC000146C1(CT-27G5B/CB/UB). A full set of Schematics, Pictures and a complete Parts List are included in this
Simplified Manual. Please file and use this Service  Manual together with the Main Service Manual, order No.
MTNC000146C1(CT-27G5B/CB/UB).

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Содержание CT25G5B - 25" COLOR TV

Страница 1: ...of potential dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this Service Manual by anyone else could result in serious injury or death Chassis CT 25G5B AP356M CT 25G5UB AP356M Models ORDER NO MTNC000664A1 B5 This Simplified S...

Страница 2: ... shield limits the X ray radiation around the bell of the picture tube in addition to the restricting magnetic effects When using a picture tube test jig for service ensure that the jig is capable of handling 37 69kV without causing X ray radiation Before returning a serviced receiver to the owner the service technician must thoroughly test the unit to ensure that is completely safe to operate Do ...

Страница 3: ...al Oscillator Disable Circuit 5 Receivers Feature Table 6 Location of Controls Receiver Receiver Front Control Panel 7 Location of Controls Remote EUR501450 8 Component Identification 9 Parts List 11 SCHEMATICS AND VOLTAGES A Board Sheet 1A C Board Sheet 1B WAVEFORMS Sheet 1B ...

Страница 4: ...ing pads with tweezers or with a miniature alligator clip and apply heat to the pad area with a 30 watt iron until solder flows Do not apply heat for more than 3 seconds How to Replace Flat IC Required Tools 1 Remove the solder from all of the pins of a Flat IC by using a de solder braid 2 Put the iron wire under the pins of the Flat IC and pull it in the direction indicated while heating the pins...

Страница 5: ... for any reason the high voltage and beam current exceed a predetermined level this protective circuit activates and detunes the horizontal oscillator that limits the high voltage The over voltage protection circuit is not adjustable However if components indicated by the symbol on the schematic in either the horizontal sweep system or the over voltage protection circuit itself are changed the ope...

Страница 6: ...d X Built in audio power 1 5Wx2 10 of speakers 2 A V in rear front 2 1 1 Dimensions mm WxDxH in 600x665x634 23 62x26 18x24 96 Weight kg lbs 34 25 75 35 Power source V Hz 120 60 Anode voltage 29 25kV 1 25kV Video input jack 1Vp p 75Ω phono jack Audio input jack 500mV RMS 47kΩ A Board TNP2AH018 AB C Board TNP2AA062 AD Table 1 Receiver Features Specifications are subject to change without notice or o...

Страница 7: ... select programmed channels Press to highlight desired features when menus are displayed Also use to select Cable Converter box channels after programming Remote Control Infra red codes the TV AUX CABLE switch must be set in CABLE position Action Button Press to display Main Menu and access On Screen feature and Adjustment Menus TV Video Button Press to select TV or Video Input 1 2 4 5 3 POWER VOL...

Страница 8: ...V sound level Use with Channel buttons to navigate in menus Channel Buttons Press to select channels Use with volume buttons to navigate in menus Action Button Press to display Main Menu and access or exit On Screen features and Adjustment Menus Keypad Buttons Press desired channel number to randomly access any channel R Tune Rapid Tune Button Press to switch to the previous channel Recall Button ...

Страница 9: ... 9 Component Identification Figure 4 Back of Television Figure 5 C Board 1 screw 1 screw 1 screw 1 screw 1 screw 1 screw 1 screw ...

Страница 10: ...gure 7 Main Board Anode High Voltage CRT secured by 4 screws Deflexion Yoke C Board Audio Video Inputs T551 Flyback A Board Tuner Degaussing Coil Tuner IC001 MPU IC101 VCJ T551 Flyback IC2304 Audio Out IC2303 Audio Out Audio Video Inputs Fuse Front Keypad Remote Control Sensor IC451 V Out ...

Страница 11: ...ANA1E1R0B CAP E 1 0UF 25V C304 ECEA1HNR47U CAP E 47UF 50V C305 ECA1HM4R7 CAP E 4 7UF 50V C306 ECA1CM221 CAP E 220UF 16V C308 ECQB1H823JM CAP P 082UF J 50V C309 ECA1AM101 CAP E 100UF 10V C310 ECA1HM4R7 CAP E 4 7UF 50V C311 ECA1HM4R7 CAP E 4 7UF 50V C312 ECA1EM220 CAP E 22UF 25V C314 ECJ2VF1H104Z CAP C 1UF Z 50V C351 ECJ2VB1H391K CAP C 390PF K 50V C352 ECJ2VB1H391K CAP C 390PF K 50V C353 ECJ2VB1H471...

Страница 12: ... C2212 ECQB1H473JM CAP P 047UF J 50V C2215 ECA0JM101 CAP E 100UF 6 3V C2218 ECA1HMR47 CAP E 47UF 50V C2220 EEANA1E100B CAP E 10UF 25V C2302 ECA1HM3R3 CAP E 3 3UF 50V C2303 ECA1CM100 CAP E 10UF 16V C2304 ECQB1H104JM CAP P 1UF J 50V C2306 ECA1CM471 CAP E 470UF 16V C2307 EEANA1E1R0B CAP E 1 0UF 25V C2309 ECA1HM010 CAP E 1 0UF 50V C2310 ECJ2VB1H222K CAP C 0022UF K 50V C2311 ECA1HM4R7 CAP E 4 7UF 50V C...

Страница 13: ...9ARTX TRANSISTOR Q004 2SB709ARTX TRANSISTOR Q302 2SD601ARTX TRANSISTOR Q304 2SD601ARTX TRANSISTOR REF NO PART NO DESCRIPTION Q351 2SC3063 TRANSISTOR Q352 2SC3063 TRANSISTOR Q353 2SC3063 TRANSISTOR Q430 2SD601ARTX TRANSISTOR Q451 2SD601ARTX TRANSISTOR Q452 2SD601ARTX TRANSISTOR Q501 2SC4212H TRANSISTOR Q551 2SD2539MA1 TRANSISTOR Q801 2SC1685RSTA TRANSISTOR Q802 2SC1384RS TRANSISTOR Q804 2SA1767Q TR...

Страница 14: ... RES M 100 J 1 10 R370 ERDS2TJ224 RES C 220K J 1 4 R371 ERDS2TJ393 RES C 39K J 1 4 R401 ERJ6GEYJ102 RES M 1K J 1 10 R430 ERJ6GEYJ103 RES M 10K J 1 10 R432 ERJ6GEYJ102 RES M 1K J 1 10 R451 ERDS1FJ1R0 RES C 1 0 J 1 2 REF NO PART NO DESCRIPTION R453 ERJ6GEYJ224 RES M 220K J 1 10 R454 ERJ6GEYJ473 RES M 47K J 1 10 R455 ERJ6GEYJ153 RES M 15K J 1 10 R456 ERJ6GEYJ243 RES M 24K J 1 10 R457 ERJ6GEYJ122 RES ...

Страница 15: ...1 0 J 1 4 R2356 ERJ6GEYJ682 RES M 6 8K J 1 10 R3001 ERJ6GEYJ473 RES M 47K J 1 10 R3002 ERJ6GEYJ104 RES M 100K J 1 10 R3005 ERJ6GEYJ750 RES M 75 J 1 10 R3006 ERJ6GEYJ391 RES M 390 J 1 10 R3009 ERJ6GEYJ682 RES M 6 8K J 1 10 R3010 ERJ6GEYJ334 RES M 330K J 1 10 R3011 ERJ6GEYJ682 RES M 6 8K J 1 10 R3012 ERJ6GEYJ334 RES M 330K J 1 10 R3013 ERJ6GEYJ682 RES M 6 8K J 1 10 R3014 ERJ6GEYJ682 RES M 6 8K J 1 1...

Страница 16: ... 0 7 4 Cb VCJ TEST H 0 2 0 MTS Adjustments M0 INPUT LEVEL 0 63 31 M1 HIGH LEVEL SEPARATION 0 63 29 M2 LOW LEVEL SEPARATION 0 15 8 Mode Service Adjustment Adjustment Range Def Val Original Value New Value Options Adjustments S0 PIP COLOR 0 127 100 S1 PIP CONTRAST 0 127 52 S2 UP 1 9 0 255 26 S3 DOWN 1 9 0 255 146 S4 LEFT 1 9 0 255 9 S5 RIGHT 1 9 0 255 103 S6 UP 1 16 0 255 26 S7 DOWN 1 16 0 255 163 S...

Страница 17: ... replacement parts only 6 BOLD LINE indicates the route of B supply 7 The schematic diagrams are current at the time of printing and are subject to change without notice 8 Ground symbol indicates HOT GROUND CONNECTION indicates COLD GROUND NOTE All other component symbols are used for engineering design purposes Voltage Measurements 1 Voltage measurement AC input to the Receiver is 120V NTSC HD 11...

Страница 18: ... and are subject to change without notice 8 Ground symbol indicates HOT GROUND CONNECTION indicates COLD GROUND NOTE All other component symbols are used for engineering design purposes Voltage Measurements 1 Voltage measurement AC input to the Receiver is 120V NTSC HD 1125i 525P when applicable signal generator is connected to the antenna of the Receiver Color bar pattern of 100 IRE white and 7 5...

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