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Convergence/ deflection board, Chapter 2---system description – JVC Model 200 User Manual

Page 66

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Chapter 2---System Description

IIC_CLK

IIC_DATA

/IIC_SINT

X_RED_CONV

X_GRN_CONV

X_BLU_CONV

Y_RED_CONV

Y_GRN_CONV

Y_BLU_CONV

V_DRIVE

CORR_SYNC

WIDTH_CONTROL

RED_ILA+

RED_ILA-

GRN_ILA+

GRN_ILA-

BLU_ILA+

BLU_ILA-

X_RED-

X_GRN+

X_GRN-

X_BLU+

X_BLU-

X_RED+

Y_RED-

Y_GRN+

Y_GRN-

Y_BLU+

Y_BLU-

Y_RED+

H_PARABOLA

V_PARABOLA

V_RAMP

V_PARAB

2

3

4

2

4

6

8

10

12

17

18

5

J33

J31

J32

5

+5.1V

6

6ND

7

+15V

9

GND

11

-15V

13

GND

J32

14

15

J33

1

3

J31

J40

1

2

3

4

5

6

J39

1

2

3

4

5

6

J38

1

2

4

5

7

8

1

GND

13

GND

2

GND

1

GND

GND

16

FROM
SCB

FROM RTG

FROM
LVPS

TO
HVPS

FROM
HVDB

TO/FROM
SRB

TO/FROM
SRB

TO
ILAs

FROM HVDB

CONVERGENCE/
DEFLECTION
BOARD

FROM
SCB

Figure 2-15. Convergence/Deflection Board I/O diagram.

IIC interface

Adjustments for this board are performed by the System Controller
via the IIC serial bus interface. This three wire bus interface
consists of a clock line, a data line and an interrupt line. The C/D
Board does not create any IIC interrupt. The following table lists all
adjustments performed via the IIC bus interface (I = Input to C/D
Board, O = Output from C/D Board):

Table 2-12. Convergence/Deflection IIC communication

Input/

Output

No. of

bits

Information Description

I

1

ILA_FREQ_N1

Data for selection of frequency of ILA bias circuit

I

1

ILA_FREQ_N2

Data for selection of frequency of ILA bias circuit

I

1

ILA_FREQ_N3

Data for selection of frequency of ILA bias circuit

2-52

Model 200 Service Manual