Symphonic WF24T5 Manuel d'utilisation

SERVICE MANUAL

This service manual shows only the differences between

the model WF24T5 and the original model 6424TF.

All other information is described in the service manual

of the model 6424TF.

23″COLOR

TELEVISION

WF24T5

TABLE OF CONTENTS

Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Schematic Diagrams / CBA’s and Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Different parts from the original model (6424TF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

SUPPLEMENT

1-1

BLOCK DIAGRAMS

Audio/Power Control Block Diagram

L3410BLA

MAIN CBA

AUDIO SIGNAL

IC801A

IC111

LINE

TUNER

SCL SCL

SDA SDA

AUDIO-IN

TU-AUDIO

AL+9V

AT T 34

POWER MANAGE.

/MCU RESET

JK702

+5V-CTRL2

28 +5V-CTRL

+8V-CTRL TO POWER

SUPPLY BLOCK

SP801

SPEAKE

CN801 CLN801

2MUTE

/STANDBY

TO IF/VIDEO/SYSTEM

CONTROL BLOCK

A-MUTE

RESET

SPEAKER 1

SP-GND 2

TV MICON/VIDEO

/AUDIO/CHROMA

/DEFLECTION

(FRONT) AMP

(AUDIO AMP)

2-1 L15N_SC

SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS

Standard Notes

Many electrical and mechanical parts in this chassis have special characteristics. These characteristics often

pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement

components rated for higher voltage, wattage, etc. Replacement parts that have these special safety

characteristics are identified in this manual and its supplements; electrical components having such features are

identified by the mark “#” in the schematic diagram and the parts list. Before replacing any of these components,

read the parts list in this manual carefully. The use of substitute replacement parts that do not have the same

safety characteristics as specified in the parts list may create shock, fire, or other hazards.

Notes:

1. Do not use the part number shown on these drawings for ordering. The correct part number is shown in the

parts list, and may be slightly different or amended since these drawings were prepared.

2. All resistance values are indicated in ohms (K = 103, M = 106).

3. Resistor wattages are 1/4W or 1/6W unless otherwise specified.

4. All capacitance values are indicated in µF (P = 10-6 µF).

5. All voltages are DC voltages unless otherwise specified.

Note of Capacitors:

ML --- Mylar Cap. PP --- Metallized Film Cap. SC --- Semiconductor Cap. L --- Low Leakage type

Temperature Characteristics of Capacitors are noted with the following:

B --- ±10% CH --- 0±60 ppm/°C CSL --- +350~-1000 ppm/°C

Tolerance of Capacitors are noted with the following:

Z --- +80~-20%

Note of Resistors:

CEM --- Cement Res. MTL --- Metal Res. F --- Fuse Res.

Capacitors and transistors are represented by the following symbols.

(Top View) (Bottom View)

(Bottom View)

Electrolytic Capacitor

Transistor or Digital Transistor

NPN Transistor PNP Transistor

NPN Digital Transistor PNP Digital Transistor

(Top View)

E C B

Digital Transistor

CBA Symbols Schematic Diagram Symbols

E C B

(Top View)

E C B

2-2 L15N_SC

LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON

THE FOLLOWING PAGES:

1. CAUTION:

CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME

TYPE_A,_V FUSE.

ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE_A,_V.

2. CAUTION:

Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.

If Main Fuse (F601) is blown, first check to see that all components in the power supply circuit are not

defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components

in the power supply circuit to fail.

3. Note:

1. Do not use the part number shown on the drawings for ordering. The correct part number is shown in the

parts list, and may be slightly different or amended since the drawings were prepared.

2. To maintain original function and reliability of repaired units, use only original replacement parts which are

listed with their part numbers in the parts list section of the service manual.

4. Voltage indications on the schematics are as shown below:

Plug the TV power cord into a standard AC outlet.:

5. How to read converged lines

6. Test Point Information

15.0

(3.0) 5.0

(3.0)

Voltage Indicates that the voltage

is not consistent here.

Power on mode

Power off mode

(Unit: Volt)

ABCD

1-B1

1-D3

AREA D3

AREA B1

1-D3

Distinction Area

Line Number

(1 to 3 digits)

Examples:

1. "1-D3" means that line number "1" goes to the line number

"1" of the area "D3".

2. "1-B1" means that line number "1" goes to the line number

"1" of the area "B1".

: Indicates a test point with a jumper wire across a hole in the PCB.

: Used to indicate a test point with a component lead on foil side.

: Used to indicate a test point with no test pin.

: Used to indicate a test point with a test pin.

2-3

Main 1/3 Schematic Diagram

L3410SCM1

MAIN 1/3

Ref No. Position

IC111 C-2

IC151 A-3

IC801A C-1

Q111 D-1

Q321 E-1

Q361 B-4

CN801 A-2

ICS

TRANSISTORS

CONNECTOR

3-1 L3410PL

Different parts from the original model (6424TF)

Ref. No. Description Part No.

MECHANICAL PARTS

A2 CONTROL PLATE L3410UL 1EM320500

A5#RATING LABEL L3410UL ----------

PB4#CHASISS NO. LABEL L1524V2 ----------

PB6 CLOTH(65) L7735TR 65X10X0.5T 0EM402149

S1 CARTON L3410UL 1EM421309

S2 STYROFOAM TOP ASSEMBLY L3400UA 1EM420671

S3 STYROFOAM BOTTOM ASSEMBLY L3400UA 1EM420672

S4 SET SHEET 1150X1900 1EM421024

S5 SERIAL NO. LABEL L3410UL ----------

S7 LABEL EAS(H3761UD) MAKER NO.ZLLFNSLE1 ----------

S8 Not Used

S9 Not Used

X2#OWNER S MANUAL ENGLISH/SPANISH 1EMN20531

ELECTRICAL PARTS

MMA CBA 1ESA11076

C642 Not Used

C643 CERAMIC CAP. 0.0047µF F CS CCG2HMN0F472

R801 Not Used

JK801 Not Used

JS801 PCB JUMPER D0.6-P5.0 JW5.0T

WF24T5

L3410UL

2005-06-22

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