Service manual

ManualsBrandsViewSonic ManualsComputer equipmentE70F-5

o

k, full pagewidth

VERTICAL

SYNC INPUT

AND POLARITY

CORRECTION

VERTICAL

SYNC

INTEGRATOR

VERTICAL

OSCILLATOR

AND AGC

EW-OUTPUT

HORIZONTAL PINCUSHION

HORIZONTAL CORNER

HORIZONTAL TRAPEZIUM

HORIZONTAL SIZE

VERTICAL LINEARITY

VERTICAL LINEARITY

BALANCE

HORIZONTAL SIZE

AND

VERTICAL SIZE

EHT COMPENSATION

OUTPUT

ASYMMETRIC

EW-CORRECTION

I

2

C-BUS

RECEIVER

HUNLOCK

OUTPUT

VERTICAL POSITION

VERTICAL SIZE, VOVSCN

VIDEO CLAMPING

AND

VERTICAL BLANK

SUPPLY

AND

REFERENCE

HORIZONTAL

OSCILLATOR

PLL1 AND

HORIZONTAL

POSITION

PLL2, PARALLELOGRAM,

PIN UNBALANCE AND

SOFT START

COINCIDENCE DETECTOR

FREQUENCY DETECTOR

I

2

C-BUS REGISTERS

PROTECTION

AND SOFT START

X-RAY

PROTECTION

HORIZONTAL

OUTPUT

STAGE

B

+

CONTROL

22

kΩ

3.3 kΩ

100 nF

8.2

nF

150

nF

(1%)

X-RAY

10 nF

R

HBUF

(2%)

R

HREF

(1%)

(1)

B+ CONTROL

APPLICATION

(2)

(TTL level)

(TTL level)

9.2 to 13.2 V

(video)

clamping

blanking

14

23 22 21 31

11

100

nF

(5%)

24

VOUT2

12

VOUT1

ASCOR

13

BDRV

BSENS

BOP

BIN

8

HDRV

or

20

17

19

18

6

4

3

5

10

7

25

16

15

26

27

28 29

12 nF

30 1

TDA4841PS

H/C SYNC INPUT

AND POLARITY

CORRECTION

MHB603

29

VERTICAL OUTPUT

SDA

SCL

HSYNC

SGND

PGND

CLBL

VSYNC

V

CC

EWDRV

VSMODVAGCVCAPVREF

HSMOD

7 V

1.2 V

EHT compensation

via horizontal size

EHT compensation

via vertical size

HFLB

HPLL2HCAPHREFHBUFHPLL1

XRAYXSEL

HUNLOCK

HORIZONTAL

AND VERTICAL

32

FOCUS

FOCUS

IC401 Block diagram and application circuit.

ViewSonic Corporation Confidential – Do Not Copy E70f-5_E70fB-5_E70fSB-5

94