FUNAI LCD-A2006, Service Manual

7-5

L4620BLP

Power Supply Block Diagram

LINE

FIL

TER

L601

A

C601

A

C

 CORD

BRIDGE

RECTIFIER

D605-D608

HO

T

COLD

T601

9

11

12

13

10

16

4

4

3

1

2

MAIN CB

A

CN101A

HOT CIRCUIT. BE CAREFUL.

2

6

7

AL+33V

AL+3.3V

AL+7.5V

INV+22V

P-ON-H

P-25V

-ON

AL+5V

15

14

IC601

IC606

ERR

OR

VO

LT

A

G

E

DET

T

-ON+5V

CN103A

AL+12V

PR

O

TECT

-1

CN101B

P

A

NEL+25V

66

P

A

NEL+3.3V

33

P

A

NEL+10.8V

11

P

A

NEL+25V

P

A

NEL+3.3V

LCD MAIN CB

A UNIT

P

A

NEL-6V

99

P

A

NEL-6V

P

A

NEL+10.8V

CN103B

AL+4V(D)

13

13

AL+5V(D)

12

12

AL+3.3V

10

10

REG+3.3V

REG+1.8V

AL+3.3V

IC101

+3.3V

REG

IC102

+1.8V

REG

AL+40V

T

O

 SYSTEM CONTR

OL

BLOCK DIA

GRAM

T

O

 INVER

TER

BLOCK DIA

GRAM

F601

T4A L 250V

Q608

Q603

Q504

Q633

Q502

Q632

Q507

Q506

-6V REG.

+5V REG.

IC602

+3.3V REG.

IC605

+5V REG.

+5V REG.

Q501

+25V REG.

Q503

+10.8V REG.

Q505

PR

O

TECT

-2

AL+5V

11

11

AL+5V

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.  

NOTE:

The voltage for parts in hot circuit is measured using

hot GND as a common terminal.

CAUTION !

For continued protection against fire hazard,

replace only with the same type fuse.