AOC 715G1821-1, 715G1995-1 Schematic

17" LCD Color Monitor HP L1740

7.2 Power Board

Philips HPL1940T/L1740

PCB : 715G1821-1/715G1995-1

BRIGHTNESS

R801

BL_CTL



12

10pF/6KV

C806

12

10pF/6KV

C801

12

12

C802

3PF 3KV

C803

JUMP

C838

1000pF

R837

7.5K_1%

C805

5pF/3KV_ NC

C804

5pF/3KV_ NC

R854

6.2M_NC

R857

7.5K_NC

C858

390pF

R834

6.2M 1/2W_NC



R824

7.5K_1%_NC

1 2

12

C860
220pF

12

R839

6.2M 1/2W



12

C807

3PF 3KV

12

C808

JUMP

12

C861
1000pF

R825

7.5K_1%

1 2

12

R859

6.2M 1/2W



OP1

OP2

OP3

OP4

R835

1 2

10K_1%

R829

0 1/10W



R855

10K_1%

R849

1 2

0 1/10W



12

R836
10K_1%

12

R830
10K_1%_NC

12

R856

10K_1%

12

R850
10K_NC

BAV70/SOT23B

2

1

BAV70/SOT23B

1

2

D833

D853

12

12

12

12

12

D881

12

IN4148

D883

12

IN4148

D885

12

IN4148

D887

12

IN4148

OP1

3

OP2

OP3

3

OP4

R865

232R

12

12

C865

33nF

R866

100K/NC

1

CN831

2

CONN

R831

1K



3

D831

BAV99

1

2

R833

1.2K

2

CN833

1

CONN

1

CN851

2

CONN

R851

1K



3

D851

BAV99

1

2

R853

1.2K

2

CN853

1

CONN

PT801

1

7

C881

0.01uF

C883

0.01uF

C885

0.01uF

C887

0.01uF

12

1 2

12

1 2

R823
10R

C823

0.001uF

R843
10R

C843

0.001uF

2

3
4

6

24:24:2400

PT802

1
2

3
4

6

24:24:2400

12

R881



100K 1/10W

12

R883

100K 1/10W



12

R885

100K 1/10W



12

R887



100K 1/10W

85

7

85

R882

1K 1/10W

R884

1K 1/10W



R886



1K 1/10W

R888

1K 1/10W



R813

33K_1%

32

C820

470uF/25V

+12VC C

470uF/25V

R863

33K 1/4W



1

C840

12

+12VCC

Q821

1

S1

2

G1

3

S2
G24D2

AM9945N

Q841

1

S1

2

G1

3

S2
G24D2

AM9945N

C880

0.1uF/ 25V

12

C821
1uF

8

D1

7

D1

6

D2

5

12

0.001uF

8

D1

7

D1

6

D2

5

Q881

2N7002

Q883

2N7002

Q885

2N7002 1

Q886

2N7002

C842

12

1 2

C841
1uF

VDD

12

32

32

32

32

R822
10R

C822

0.001uF

12

R842
10R

1 2

R880
10K 1/10W



1

1

1

VDD

R816

20K

2

+12VC C

3 1

1 2

12

1

2

3

4

5

6

7

8

Isen

Q873
PDTA144EU

R873

2K 1/10W



ZD874

RLZ5.6B

C811
1uF

U811

DRV1

VDDA

TIMER

DIM

ISEN

VSEN

OVPT

NC1

OZ9938GN

VDD

1

12

C819

0.01uF/25V

1 2

32

12

PGND

GNDA

SSTCMP

R807

12

10K

R874
330 1/10W



Q874

2N3904

C874
1uF

DRV2

C832

0.1uF

VDD

12

R811

3M3

16

15

14

13

CT

12

11

LCT

10

ENA

9

C812

NC2

0.1uF

12

R819

1M



C813

560pF

C847

12

0.022uF/ 25V

12

R812
620K

Isen

Q880

2N7002

VDD

12

R804
10K 1/10W

1

C830

1000pF/N C

R806

100K/NC

PANEL_ID



12

32

Q801
2N7002

1 2

12

R872

100K

1 2

IC901

PANEL_ID

12

C831

0.33uF

C871

0.1uF_N C

C826

0.01uF/NC

1

R815

30K

12

C846
1uF

R861

100K_1%

32

Q871

2N7002

TPV 2n7002

12

R803

10K/NC

10K

12

R802

100K

1 2

R871

10K 1/2W



18

17" LCD Color Monitor HP L1740

Philips HPL1940/L1740
PCB : 715G1821-1/715G1995-1

N

CN901

3

AC SOCKET

1 2

F901

L

1 21 2

FUSE 3.15A 250V

CN951

HARNESS 14P-14P 65mm

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

NR901

SCK084

+3.3V

JUMP

F902

VAR901

varistor_NC

12

C908

0.47uF/275V

BRIGHTNESS
BL_CTL
PANEL_ID

C951

0.1uF/25V

C955

0.1uF/25V

+12VCC

+

+5V

+

R900

680K

1 2

R901

680K

1 2

R902

680K

1 2

C952

470UF 25V

C956

1000UF 10V

L901
7mH

0.8uH

L902

1 2

C8B-R6H_NC

L903

1 2
C8B-R6H_NC

L951

1 2

L955

0.8uH

C901

0.001uF/250 V

C915

0.012uF/25V

+12V

R953
1K 1/4W_NC



12

C900

2

0.001uF/250V

FB901
BEAD

R920

0.22R/1W

4

5

6

2

1

POWER X'FMR

0.0022uF/400 V

43

R954

100 OHM 1/10W

ZD975

RLZ5.1B

1 2

R956

NC

R957

NC

T901

11
12

O

7
8

9
10

C912

12

12

+

-

3

12

12

BD901

U4KB80R

C913

0.1uF

C914

1uF

R923

1

1 2

R912

1M

12

12K_1%

+12VCC

+

VCC

GND

PRO SEN

CTRL

TEA15 32

C958

470UF 25V

+

C907

100uF/450V

IC901

12

R904

1.5M/R1206

R907
10K/R1206

D918

DRA

DRV

R918 150

R917

DEM

C917 0.33uF/25V

8

C959
NC

IC903

NC

VCC

2

1N4148

33K

GND

12





L5972D

GND3GND6GND

R910

1.5M/R1206

R91510

R916

12

750R

R959

22K _NC



D926

RGP10D

+

C927

68u/25V

1

OUT

5

FB

COMP

4

7

C961

NC

C960

NC

R955

NC

R905

100K/1W

R921
750R

1

12

R927

D906

NC

12

23

R919

R926

0R

12

1 2

C920

0.001uF/1KV

D901
BYT42J

Q901
STP7NK80ZFP

1R/1/2W _NC

4.7K_1206

L904

NC

4

12

D905
P4KE_NC

R914
1K24_1%

5VA

IC902

TCET1 103

R941

1K

IC941
KIA431A

FB902
BEAD

R942



27K _NC

R958

NC

270PF 500V

3.3nF/500V_N C

C941

12

C931

12

D931

MBRF 10H 100C T-45

C935

12

D935

STPS10L45CFP

0.0056uF

C942

4.7nF/25V_N C

C962

+

NC

R931

1 2

100 OHM 1/4W

R932

1 2

100OHM 1/4W

R935

1 2

2R2_NC

R936

1 2

2R2_NC

+3.3V

C953

NC

+

+

R943

5.1K 1/10W

1 2

R944

9.1K/0805_1%

1 2

R945

9.1K_1%

1 2

C932

1000uF/25V

C936

1000uF/16V



+

1000uF/25V

R937

1.8K_1/8W

1 2

+12V

C933

5VA

ZD949

RLZ12B_NC

1 2

R949

100 _NC

1 2



1 2

R946

100K_1%

S901

spotgap_NC

14

23

S902

spotgap_NC

1 2

R952
10



R951

3.3K _NC

1 2



1 2

ZD951
P6KE8.2A

1 2

19