Hitachi CM721FET, Service Manual

HZ5C1

ZD2

33P

C5

33P

C6

.01U

C3

220P

C38

.01U

C7

.01U

C1

.01U

C10

GND

GND

1N4148

D1

R31 10K 1/4W

R62

1/4W

1K

1N4148

D2

R28 10K 1/4W

R59

1/4W

4.7K

R63

2.7K

R26 10K 1/4W

GND

.1U

C45

GND

R22 10K 1/4W

24C08

8

7

6

5

4

3

2

1

U2

1000P

C26

R29 10K 1/4W

R58

10K

470P

C27

GND

R61
10K

5

4

3

2

1

P5

GND

GND

GND

GND

GND

R60

10K

10K

1/4W

R47

2.2K

1/4W

R70

R57
10K

GND

GND

GND

GND

GND

GND

GND

R10

470

2SC945

Q4

100V

.01U

C31

2SC945

Q5

.01U

C32

R64

1M

BEAD

L31

100

R72

GND

GND

+

4.7U

C15

+

4.7U

C17

+

4.7U

C18

+

10V

220U

C8

GND

+

16V

220U

C14

+

4.7U

C23

XX

D4

+

4.7U

C16

GND

100P

C36

+

10V

2200U

C2

+

10U

16V

C4

XX

D5

100P

C39

Q2

2SC945

GND

RN1203

Q3

1N4148

D3

GND

GND

XX

C42

GND

9

8

7

6

5

4

3

2

1

P1

1/4W

10K

R30

+

47U

C70

R17 8.2K

R15 100 1/4W

R25 100 1/4W

R24 10K 1/4W

O

G

I

U4

7812

1%

5.6K

R7

10K

R38

R23 10K 1/4W

R16 100 1/4W

R21 100 1/4W

10K 1/4W

R27

R5

1%

2.7K

10K

R37

1%

10K

R71

R6

1%

3.6K

10K

R39

RA1

10KX8

10K

1/4W

R45

5.6k

R36

HZ7A1

ZD1

+

25V

47U

C13

R11

1/4W

1K

R50 4.7K

100P

C41

R49 4.7K

R20 100 1/4W

2200P

C11

10K

R40

10K

1/4W

R48

R65

1%

1.3K

10K

1/4W

R43

GND

DAC2

DAC1
DAC0

RESET

VDD

GND
OSCO

OSCI

P15

P14
P13

P12

AD1/P11

AD0/P10
INTE/P16

P27

P26

P25
P24

P23

P22

P21

P20

DDC-SDA

DDC-SCL

DAC8

DAC9

DAC10

DAC11

DAC12

DAC13

VSYNCO

HSYNCO

DAC7

DAC6

DAC5

DAC4

DAC3

HSYNCI

VSYNCI

UM6861

U1

2
1

JP1

L30

BEAD

8MHz

Y1

GND

SW1

R1

4.7K

R13

100

SW5

+

10V

100U

C9

SW4

SW3

SW2

GND

100P

C40

O

G

I

7805

U3

R4

1%

5.1K

5

4

3

2

1

P3

R69 10K

R8

1%

10K

4.7K

R80

4

3

2

1

P2

2SC945

Q1

2W

3.3

R100

+

C25

4.7U

R68 10K

R14

100

+

4.7U

C29

+

4.7U

C30

+

4.7U

C21

+

4.7U

C20

+

4.7U

C19

5.6k

R35

220P

C37

GND

GND

+

4.7U

C24

BEAD

L8

BEAD

L7

XX

R73

BEAD

L5

BEAD

L6

1N4148

D8

1N4148

D6

GND

GND

1N4148

D7

1N4148

D9

GND

1N4148

D11

1N4148

D10

1N4148

D13

1N4148

D12

GND

1N4148

D14

GND

1N4148

D16

1N4148

D15

1N4148

D17

GND

4.7k

R34 1N4148

D406

47K

R33

RESET

V-CENT

7.5VS

ABL

12V

12V

H-SYNC

H-SYNC

6.3V

V350

82V

GREEN

VCENT

V-MODE

SW2

BALANCE

PS1

PIN.

EEP-SDA

16VS

TRAP.

PS2

SW1

TILT

BRI.

BRI

PARALLEL

SW5

HSYNC

V-SIZE

V-SIZE

TRAP

8.4V

8.4V

LED1

EEP-SCL

G1

PIN

M

LED2

5V

5V

5V

5V

5V

5V

5V

5V

5V

5V

H-MORIE

H-MORIE

FAT.

PARA.
BALA.

CLAMP

DDC-SDA

DDC-SDA

CONNER

KEY-IN

KEY-IN

DDC-SCL

DDC-SCL

GND

GND

H-PHASE

H-PHASE

AMBER

V-OUT

V-OUT

7.5V

HSIZE

DEG.

DEG.

V-MORIE

V-MORIE

H-BLK

V-SYNC

V-SYNC

SW4

TILT.

CORNER.

H-OUT

H-SIZE

VSYNC

MUTE

TO U4 12V 

         TO U401 PIN3  

TO Q952 C

L

H

H

H

H

H

H

L

H

L

58K-66K

H

H

L

L

H

L

L

L

L

L

L

L

L

L

L

L

SW4

SW3

SW2

SW1

L

L

H

35

25

15

5

30

10

21

20

40

1

L

H

H

H

H

H

H

H

H

H

H

H

H

H

H

SWITCH BOARD VR-916

SCHEMATIC, DEF & POWER VA-916/

Title

1

2

3

4

D

C

B

A

POWER ON/OFF

ADJ-

ADJ+

FUN-

FUN+

(NEGATIVE)

(POSITIVE)

39

38
37

36

34
33

32

31

29

28

27
26

24

23
22

19

18

17

16

14

13

12

11

9

8

7

6

4

3

2

76K-89K

66K-76K 

52.1K-58K

40.1K-52K

89K-

36.1K-40K

31K-33K

SW5

HITACHI (EUROPE) LTD

33.1K-36K

H

Sheet 1 of 3