Panasonic TX-14B4T Service Manual

Z-185 chassis

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Operating instructions manual (9 pages)

Operating instructions manual (9 pages)

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SPECIFICATIONS

Power Source:

220-240V a.c., 50Hz

Power Consumption:

39W

Stand-by Power

Consumption:

2.9W

Aerial Impedance:

75Ω unbalanced, Coaxial Type

Receiving System:

PAL I, PAL-525/60

M.NTSC

NTSC (AV only)

Receiving Channels:

UHF E21-E68

CH01-CH99 (L (IRISH) MODELS)

Intermediate Frequency:

Video/Audio

Video

39.5MHz

Audio

33.5MHz

32.95MHz (NICAM)

Colour

35.07MHz (PAL)

Terminals:

AV1 IN

Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 10kΩ

RGB (21 pin)

Audio (RCA x 1) 500mV rms 10kΩ

Video (RCA x 1) 1V p-p 75Ω

Colour Television

TX-14B4T

TX-14B4T/B

TX-14B4TL

TC-14B4R

TC-14B4R/B

Z-185 Chassis

AV1 OUT

Video (21 pin)

Audio (21 pin)

Picture Tube:

A34EAC01X06 34cm

High Voltage:

26.5

Audio Output:

2.5W

(Music Power)

8Ω Impedance

Headphones:

8Ω Impedance

3.5mm

Accessories

supplied :

Remote Control

2 x R6 (UM3) Batteries

Dimensions:

Height:

342mm

Width:

366mm

Depth:

376mm

Net weight:

9.6kg

Specifications are subject to change without notice.

Weights and dimensions shown are approximate.

ORDER No. SM-02008

1V p-p 75Ω

500mV rms 1kΩ

1kV

Table of Contents

Summary of Contents for Panasonic TX-14B4T

Page 1: Colour Television
ORDER No. SM-02008 Colour Television TX-14B4T TX-14B4T/B TX-14B4TL TC-14B4R TC-14B4R/B Z-185 Chassis SPECIFICATIONS Power Source: 220-240V a.c., 50Hz AV1 OUT Video (21 pin) 1V p-p 75Ω Audio (21 pin) 500mV rms 1kΩ Power Consumption: Picture Tube: A34EAC01X06 34cm Stand-by Power Consumption: 2.9W...
Page 2: Table Of Contents
CONTENTS SAFETY PRECAUTIONS................................2 SERVICE HINTS ..................................3 ALIGNMENT PROCEDURE AND OPTION SETTINGS......................4 WAVEFORM PATTERN TABLE ...............................5 BLOCK DIAGRAMS ..................................6 PARTS LOCATION ...................................7 REPLACEMENT PARTS LIST ..............................8 SCHEMATIC DIAGRAMS ...............................14 CONDUCTOR VIEWS................................16 SAFETY PRECAUTIONS GENERAL GUIDE LINES It is advisable to insert an isolation transformer in the X-RADIATION WARNING a.c.
Page 3: Service Hints
SERVICE HINTS How to remove the rear cover 1. Remove the 10 screws as shown in Fig.2. SCREWS SCREWS Fig.2. LOCATION OF CONTROLS Y-Board E-Board Focus Screen Fig.3.
Page 4: Alignment Procedure And Option Settings
ALIGNMENT PROCEDURE AND OPTION SETTING Entering SERVICE mode Service mode is entered by selecting the “mute” remote key and local “down” simultaneously with the sharpness DAC set to Minimum and programme position 99 selected. Service mode 2 is selected by pressing the Recall remote key while in service mode 1. Service mode navigation - Up /Down remote keys :cycle through the service items available.
Page 5: Block Diagrams
CIRCUIT BLOCK DIAGRAM...
Page 6: Parts Location
PARTS LOCATION NOTE: The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List.
Page 7: Replacement Parts List
DBYT51J DIODE COMMON PARTS D802 DBYT51J DIODE D803 DBYT51J DIODE D804 DBYT51J DIODE EXPLODED VIEW D805 DBYW36 DIODE 4855623201 PANASONIC BADGE D806 DBYW36 DIODE 4858314010 SPEAKER D808 DBYW36 DIODE 4859804593 E P.C.B. D809 DBYW36 DIODE 4859906310 AC POWER CORD D810...
Page 8 Cct Ref Parts Number Description Cct Ref Parts Number Description R520 ERD25TJ183 CARBON 0.25W COILS R521 ERD25TJ391 CARBON 0.25W L101 5CPZ100K02 PEAKING COIL R522 ERD25TJ221 CARBON 0.25W L301 5CPZ109M04 COIL R523 ERD25TJ331 CARBON 0.25W L350 5CPZ109M04 COIL R524 ERD25TJ561 CARBON 0.25W L401 58H0000016...
Page 9 Cct Ref Parts Number Description Cct Ref Parts Number Description R855 ERD25TJ185 CARBON 0,25W 1.8M C524 CMXM2A104J MYLAR 100V 100nF R870 ERD25TJ222 CARBON 0.25W C525 ECCR1H102J CERAMIC R888 ERD25TJ103 CARBON 0.25W C526 CMXM2A104J MYLAR 100V 100nF R910 ERD25TJ101 CARBON 0.25W C527 CMXM2A473J MYLAR...
Page 10 Cct Ref Parts Number Description Cct Ref Parts Number Description C968 CMXL2E104K MYLAR 250V 100nF INSTRUCTION BOOKS CA01 ECCR1H101J CERAMIC 100pF TQB8E3508-1 ENGLISH CA02 ECCR1H101J CERAMIC 100pF I.C.s CA03 ECCR1H101J CERAMIC 100pF I501 TDA9381S DECODER/VIDEO PROCESSO CA04 ECCR1H229J ELECT 2.2µF I702 X24C-14B4RB EAROM*...
Page 11 Cct Ref Parts Number Description Cct Ref Parts Number Description GPBMA1V5012 CARTON INSTRUCTION BOOKS TQB8E3504-1 ENGLISH I.C.s I702 X24C-14B4TB EAROM* DIODES D591 DTZX2V4A DIODE RESISTORS R591 ERD25TJ221 CARBON 0.25W CAPACITORS C101 ECEA1ES100 ELECT 10pF C315 ECEA2CS470 ELECT 160V 47pF C501 ECEA1ES100 ELECT 10pF...
Page 12: Schematic Diagrams
SCHEMATIC DIAGRAMS FOR MODELS TX-14B4T TX-14B4T/B TX-14B4TL TC-14B4R TC-14B4R/B (Z-185 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. NOTE RESISTOR All resistors are carbon ¼W resistor, unless marked otherwise.
Page 14 PRINTED CIRCUIT BOARD...

This manual is also suitable for:

Tx-14b4t/b Tc-14b4r Tc-14b4r/b Tx-14b4tl