Schematic Diagram. Emerson 6420FE

Main 1/4 Schematic Diagram

A4

B4

A3

B3

C4

VIDEO SIGNAL

D4 E4

C3 D3 E3

F4

MAIN 1/4

Ref No.

Position

ICS

IC111

IC151

C-2

A-3

TRANSISTORS

Q111

Q131

Q161

D-1

A-3

A-4

Q321

Q361

E-1

B-4

F3

A2

B2

C2 D2 E2 F2

A1

B1

7-3

C1 D1 E1 F1

7-4 L2401SCM1

Main 2/4 Schematic Diagram

VIDEO SIGNAL

AUDIO SIGNAL

G4

H4

G3

H3

G2

H2

I4

I3

J4 K4

J3

K3

L4 MAIN 2/4

Ref No.

Position

ICS

IC431

IC771

G-3

H-2

IC801 I-3

TRANSISTORS

Q801

Q811

J-3

I-3

CONNECTORS

CN801

CN802

L-4

L-4

L3

I2 J2

K2 L2

G1

7-5

H1

I1

J1

K1

7-6

L1

L2401SCM2

Main 3/4 Schematic Diagram

IF SIGNAL

VIDEO SIGNAL

AUDIO SIGNAL

CAUTION !

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

If Main Fuse (F601) is blown, 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.

4A/125V

CAUTION: FOR CONTINUED PROTECTION AGAINST RISK

OF FIRE, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE.

ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE

MÊME TYPE DE 4A, 125V.

NOTE :

The voltage for parts in hot circuit is measured using hot GND as a common terminal.

M4

N4

O4 P4

Q4

M3

M2

N3

N2

O3

O2

P3

P2

Q3

Q2

R4

R3

MAIN 3/4

Ref No.

Q31

Q601

Q602

Q631

Position

ICS

IC31

IC601

P-3

O-1

TRANSISTORS

P-4

P-2

P-1

O-1

Q652

Q672

O-1

N-2

Q673

Q674

Q681

Q682

N-1

N-1

M-2

M-1

Q696

O-2

CONNECTOR

CN691

Q-2

TEST POINT

TP300

N-4

VARIABLE RESISTOR

VR661 O-1

R2

M1

N1

7-7

O1

P1

Q1

*

1 NOTE:

The Capacitor ( C643 ) is either type A or type B.

These two types are exchangeable and can be

Type A

Type B

C643 C642 JS642

0.01/250V

0.01/250V

Not Used

4700P/250V

Not Used WIRE

L2401SCM3

7-8

Main 4/4 & CRT Schematic Diagram

MAIN 4/4

Ref No.

Position

IC

IC551

S-3

TRANSISTORS

Q571

Q572

U-2

T-2

CONNECTORS

CN571 T-3

Ref No.

Position

CONNECTORS

WH501A

WH301A

V-3

V-2

TEST POINTS

TP591 U-2

TP592

TP601

U-2

U-3

S3

T3

U3

VIDEO SIGNAL

V3 W3

CRT

Ref No.

Position

TRANSISTORS

Q1511

Q1521

Q1531

W-1

W-1

X-1

CONNECTORS

CN1501

WH301B

WH501B

X-2

V-2

V-3

X3

S2

T2

U2 V2 W2 X2

S1

7-9

T1

U1 V1 W1

7-10

X1

L2401SCM4