Emerson EWT19B4 Schematic

SERVICE MANUAL

This service manual supplement (EWT19B4) contains only
the difference from the original model.
For all other data, see the original service manual for

ST419D.

19" COLOR TELEVISION

EWT19B4

IMPORTANT SAFETY NOTICE

Proper service and repair is important to the safe, reliable operation of all
Funai Equipment. The service procedures recommended by Funai and de­scribed in this service manual are effective methods of performing service
operations. Some of these service special tools should be used when and
as recommended.

It is important to note that this service manual contains various CAUTIONS
and NOTICES which should be carefully read in order to minimize the risk of
personal injury to service personnel. The possibility exists that improper
service methods may damage the equipment. It also is important to under­stand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Funai
could not possibly know, evaluate and advice the service trade of all con­ceivable ways in which service might be done or of the possible hazardous
consequences of each way. Consequently, Funai has not undertaken any
such broad evaluation. Accordingly, a servicer who uses a service proce­dure or tool which is not recommended by Funai must first use all precau­tions thoroughly so that neither his safety nor the safe operation of the
equipment will be jeopardized by the service method selected.

TABLE OF CONTENTS

BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

DIFFERENT PARTS FROM ORIGINAL MODEL (ST419D). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Audio/Power Control Block Diagram

BLOCK DIAGRAMS

AUDIO SIGNAL

IC111

TV MICON/VIDEO
/AUDIO/CHROMA
/DEFLECTION

79P-ON-H

FROM/TO IF/VIDEO
/SYSTEM CONTROL
BLOCK

TU-AUDIO

JK702
AUDIO-IN

SCL SCL

SDA

AL+9V

58

56

25

27

31

SDA

LINE

TUNER

POWER MANAGE.
MCU RESET

ATT

A-MUTE-H

34

64

40
18
28

IC801

7

5

(AMP)

MUTE

OUTPUT

+8V CTRL
+5V CTRL2
+5V CTRL

1

TO POWER
SUPPLY BLOCK

CN801

SPEAKER

SP-GND

CLN801
1
2

SP801
SPEAKER

13

RESET

12

MAIN CBA

1-1 1-2

L6408BLA