Panasonic WJAVE-55 Service manual

SPECIFICATIONS

Source Input : x4 (SOURCE 1/4)

Video Input : 1.0 Vp-p/75Ω PAL composite signal, pin-jack
Y/C input: Y signal : 1.0 V[p-p]/75Ω, C signal : 0.3 V[p-p]/75Ω Mini Din 4-pin connector
Audio Input : –6 dBs 20 kΩ pin jack (L/R)

Character Input : x1 (TITLE) ; 10-pin connector for optional Character Generator WJ-TTL7
Recording Output : x1 (REC OUT )

Video Output : 1.0 Vp-p/75Ω PAL Composite signal, pin-jacks
Y/C Output : Y signal ; 1.0 V[p-p]/75Ω, C signal ; 0.3 V[p-p]/75Ω Mini Din 4-pin connector
Audio Output : –6 dBV/1 kΩ, pin jacks (L/R)

Preview Output :

Video Output : 1.0 Vp-p/75Ω PAL Composite signal, pin-jacks

Back Colour : White, Yellow, Cyan, Green, Magenta, Red, Blue,Black and Useable
Wipe Patterns : 157 patterns
Video Gain : Unity
S/N (typical) : Video 50 dB (composite), 50 dB (Y/C)

Audio ; 60 dB

Power Source : 220 - 240V AC, 50 Hz
Power Consumption : Approx 19W
Ambient Operating Temperature : 0°C - 40°C (32°F - 104°F)
Ambient Operating Humidity : Less than 90%
Dimensions: 420 (W) x 300 (H) x 88 (D) mm
Weight: 2.5 kg

Weight and dimensions indicated above are approximate.
Specifications are subject to change without notice.

Digital AV Mixer

WJ-AVE55

ORDER NO. AVS9602118C8

C 1996 Matsushita Communication Industrial Co., Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.

This service information is designed for experienced repair technicians only and is not designed for use by the
general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to
service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any
attempt to service or repair the product or products dealt with in this service information by anyone else could
result in serious injury or death.

!

WARNING

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK). NO USER
SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.

This symbol warns the user that uninsulated voltage within
the unit may have sufficient magnitude to cause electric
shock. Therefore, it is dangerous to make any kind of contact
with any inside part of this unit.

This symbol alerts the user that impotant literature concerning
the operation and maintenance of this has been included.
Therefore, it should be read carefully in order to avoid
any problems.

There are special components used in this equipment which are important for safety. These parts are indicated

by the ” Y ” mark on the schematic diagram and the replacement parts list. It is essential that these critical
parts should be replaced with manufacturer's specified parts to prevent shock, fire, or other hazards.
Do not modify the original design without permission of manufacture.

IMPORTANT SAFETY NOTICE

CONTENTS

MAJOR OPERATING CONTROLS AND THEIR FUNCTIONS........................................................................................... 1

SYSTEM CONNECTION ...................................................................................................................................................... 5

CIRCUIT DESCRIPTION

IC DESCRIPTION.............................................................................................................................................................. 6

ADJUSTMENT PROCEDURE..............................................................................................................................................27

LOCATION OF TEST POINTS AND ADJUSTING CONTROLS.........................................................................................30

APPEARANCE OF IC,TRANSISTOR AND DIODE.............................................................................................................31

CHIP COMPONENTS...........................................................................................................................................................32

BLOCK DIAGRAM

SWITCH BOARD...............................................................................................................................................................34

MAIN BOARD(1/2).............................................................................................................................................................35

MAIN BOARD(2/2).............................................................................................................................................................36

SCHEMATIC DIAGRAM

MAIN BOARD(2/2).............................................................................................................................................................38

MAIN BOARD(1/2).............................................................................................................................................................40

SWITCH BOARD...............................................................................................................................................................41

POWER BOARD................................................................................................................................................................41

CONDUCTOR VIEW

MAIN BOARD ....................................................................................................................................................................37

SWITCH BOARD...............................................................................................................................................................41

POWER BOARD................................................................................................................................................................41

EXPLODED VIEW ................................................................................................................................................................42

REPLACEMENT PARTS LIST.............................................................................................................................................43

Standard Accessory Optional Accessory

Power Cord 1 pc. Character Generator WJ-TTL7

1

POWER Section

(2) Power Indicator

Side View

(1) Power Switch (POWER ON/OFF)

(3) Wipe / Mix Selection Button (WIPE/MIX)

Used to select either the Wipe or Mix Effect.
Lighting : shows the Wipe selection
Blinking : shows the Mix selection

(4) Luminance Key Button

Used to replace certain luminance of one picture with a
second picture.

TRANSITION SELECT Section

POWER

OFFON

POWER

TRANSITION SELECT

WIPE/MIX

LUM KEY CHROMA KEY

SET

(5) Chroma Key Button

Used to replace certain colour of one picture with a
second picture.

(6) Set Button

Used to select the position for the chroma function.

MAJOR OPERATING CONTROLS AND THEIR FUNCTIONS

2

ON SCREEN DISPLAY SETTING Section

ON SCREEN DISPLAY SETTING

WIPE EFFECT COL. FADE AUDIO

(7) Wipe Button (WIPE)

Used to display the Wipe menu on the preview monitor.

(8) Effect Button (EFFECT)

Used to display the Effect Setting menu on the preview
monitor.

(9) Colour Button (COL.)

Used to select the colour for the back screen or wipe
edge.

(10) Fade Button (FADE)

Used to display the Fade Setting menu on the preview
monitor.

(11) Audio Button (AUDIO)

Used to display the Audio Setting menu on the preview
monitor.

POSITION/COL. CORRECT Section

POSITION/COL.CORRECT

SELECT

POSITION GRABBER

SCENE

CORRECT

COL.

R

GB

(14) Scene Grabber Indicator (SCENE. GRA.)

(15) Colour Correct Indicator (COL CORRECT)

(16) Joystick Control

This joystick Control has two functions - setting the
position of the specified wipe pattern , moving the cur­sor for setting the chroma key and correcting the
Colour A-bus / B-bus.

(12) Select Button (SELECT)

Used to select the POSITION, SCENE GRABBER or
COL CORRECT.

Notes :

1. Scene Grabber is available in pattern.

2. When selecting the CHROMA ON mode and press
the desired Effect Output Button, colour correction
is available.

(13) Position Indicator (POSITION)

3

(20) Still Out Buttons (STILL)

An instant still or frozen image can be obtained by
pressing this button.

(21) Mix/Wipe Control (MIX WIPE EFFECT)

Mix and wipe can be performed by operating this con­trol.

(22) Time Control (TIME)

For adjusting the transition time of Auto Fade Function
and Auto Take Function.

(23) Auto Fade Button (AUTO FADE)

Automatic fade can be executed according to the time
set by TIME Control.

(24) Auto Take Button (AUTO TAKE)

Automatic wipe or mix can be executed according to
the time set by TIME Control (22).

SOURCE SELECT Section

SOURCE SELECT

SOURCE1SOURCE2SOURCE3SOURCE4BACK

COL.

EFFECT STILL

A BUS

B BUS

AUTO FADE

AUTO TAKE

TIME

MIN MAX

14

2

8

(17) A-bus Selection Buttons (A)

SOURCE 1: Used to select Source 1 Audio/Video

Signals (35)(36)(37) supplied to the rear panel.

SOURCE 2: Used to select Source 2 Audio/Video

Signals (38)(39)(40) supplied to the rear panel.

SOURCE 3: Used to select Source 3 Audio/Video

Signals (41)(42)(43) supplied to the rear panel.

SOURCE 4: Used to select Source 4 Audio/Video

Signals (44)(45)(46) supplied to the rear panel.

BACK COL: Used to select the Back Colour.

(

18) B-bus Selection Buttons

Same selection can be available as mentioned in the A­bus Selection buttons (17).

(19) Effect Out Buttons (EFFECT)

Used to supply the effect signal to the preview and Rec
Out connectors.

MODE SETTING Section

MODE SETTING

MEMORY CALL No.

EVENT

1 2 3

4 5 6

7 8 9

0

SELECT

/UNDO

(25) Event Memory Button (EVENT MEMORY)

Used to memorize the present status.

(26) Call Button (CALL)

Used to recall the
memorized status.

(27) Number Button (No.)
(28) Up Button

(29) Left Button
(30) Down Button
(31) Right Button
(32) SELECT/UNDO Button
(33) Enter Button ( )

4

Front Panel

(34) Titler Connector (TITLE)

TITLE

Rear Panel

COMP

Y/C

SOURCE 1

AUDIO

L

R

COMP

Y/C

SOURCE 2

AUDIO

L

R

COMP

Y/C

SOURCE 3

AUDIO

L

R

COMP

Y/C

SOURCE 4

AUDIO

L

R

COMP

Y/C

REC OUT

AUDIO

L

R

SERIAL

GPI

PREVIEW

-AC IN

(35) Source 1 Audio Input Jack (SOURCE 1 AUDIO)

(36) Source 1 S-video Input Connector (Y/C)

(37) Source 1 Composite Video Signal Input Jack

(38) Source 2 Audio Input Jack (SOURCE 2 AUDIO)

(39) Source 2 S-video Input Connector (Y/C)

(40) Source 2 Composite Video Signal Input Jack

(41) Source 3 Audio Input Jack (SOURCE 3 AUDIO)

(42) Source 3 S-video Input Connector (Y/C)

(43) Source 3 Composite Video Signal Input Jack

(44) Source 4 Audio Input Jack (SOURCE 4 AUDIO)

(45) Source 4 S-video Input Connector (Y/C)

(46) Source 4 Composite Video Signal Input Jack

(47) Recording Out Audio Output Jack

(REC OUT AUDIO)

(48) Recording Out S-video Output Connector

(REC OUT Y/C)

(49) Recording Out Composite Video Signal

Output Jack

(50) GPI Connector (GPI)

Refer to the qualified service personnel or system
Installers for this connection.

(51) Preview Output Connector

Connect to video input connector of the preview moni­tor.

(52) Serial Connector (SERIAL)

Refer to the qualified service personnel or system
Installers for this connection.

(53) Power Socket (AC IN)

Connect the Power Cord (provided) to this socket.

5

SYSTEM CONNECTION

Q Composite (RCA-style) video and audio
W S-video (Y/C)

Types of Input and Output Jacks

Y/C

SOURCE 1

AUDIO

L

Q W

Preview Monitor

Output Monitor

Power
Cord

WJ-TTL7

L

R

AUDIO

SOURCE 1

Y/C

COMP

L

R

SOURCE 2

AUDIO

Y/C

COMP

L

R

SOURCE 3

AUDIO

SOURCE 4

AUDIO

L

Y/C

COMP

R

Y/C

COMP

REC OUT

Y/C

COMP

GPI

PREVIEW

SERIAL

-AC IN

AUDIO

L

R

6

2. Main Board

2.1. IC1 on the Main Board is using the Octal 3-State Bus

Buffers IC MC74HC541AF.
Description of this IC is as follows:

2.2. IC6 and IC7 on the Main Board are using the Octal 3-

State D-FFs IC MC74HC374AF.
Description of this IC is as follows:

IC Description

1. Power Board

1.1. IC2 on the Power Board is using the Variable Shunt

Regulator IC YWTA76431S.
Description of this IC is as follows:

1.2. IC1 on the Power Board is using the-3-terminal

Voltage Regulator IC YWUPC24M12HF.
Description of this IC is as follows:

CIRCUIT DESCRIPTION

1 Reference

2 Anode

3 Cathode

+
–

1

3

2

Reference

Cathode

Anode

Input 1

GND 2

Output 3

ASO Limiter

Starter

Reference Voltage Generator

Driver

Over-current

Protector

Over-heat

Protector

1

3

2

Error
Amp.

Input

Output

GND

E1 1
1A 2
2A 3
3A 4
4A 5
5A 6
6A 7
7A 8

20 Vcc
19 E2
18 1Y
17 2Y
16 3Y
15 4Y
14 5Y
13 6Y

(TOP VIEW)

E2

L

INPUTSYOUTPUT

: Don’t care.
Z : High Impedance

H

E1

L

H

A

Truth Table

8A 9

GND 10 11 8Y

12 7Y

Z

∗

∗

∗

1Q 2
1D 3
2D 4
2Q 5
3Q 6
3D 7
4D 8

20 Vcc
19 8Q
18 8D
17 7D
16 7Q
15 6Q
14 6D
13 5D

(TOP VIEW)

4Q 9

GND 10 11 EG

12 5Q

OE 1

INPUTS

FUNCTION

EG

Latch

Q = D

: Don’t care.

Truth Table

OE

HZ

Z : High Impedance

L
H

∗

∗
∗

∗

7

2.3. IC62 on the Main Board is using the 2-D Low Pass Filter HCMOS Gate Array Logic IC YWAJ0016.

Description of this IC is as follows:

Y3C 1

Vss 2

HPC 3

FS4 4

RECC0 5

RECC1 6

RECC2 7

RECC3 8

V

DD 9

RECC4 10

RECC5 11

RECC6 12

V

DD 25

SD0 26

SD1 27

SD2 28

SD3 29

SD4 30

Vss 31

PVWC0 32

PVWC1 33

PVWC2 34

PVWC3 35

VDD 36

RECY7 24

RECY6 23

RECY5 22

RECY4 21

RECY3 20

RECY2 19

RECY1 18

RECY0 17

V

DD 16

Y2C 15

Vss 14

RECC7 13

PVWC4 37

PVWC5 38

PVWC6 39

PVWC7 40

41 SPC

42 Vss

43 OS1

44 SD5

45 XHI

46 V

DD

47 PVWY0

48 PVWY1

49 PVWY2

50 PVWY3

51 PVWY4

52 PVWY5

53 PVWY6

54 PVWY7

55 Vss

56 V

DD

57 ASYNC

58 SYNC

59 HD

60 VD

61 VP

62 OSDB

63 OSDG

64 OSDR

65 OSD

66 ST

67 REG5

68 REG4

69 REG3

70 REG2

71 REG1

72 REG0

73 Vss

74 D7

75 D6

76 D5

77 D4

78 D3

79 D2

80 D1

81 D0

82 WPTST

83 TM2

84 TM1

85 TM0

86 PAL

87 MD1

88 MD0

89 SD6

90 WPO

91 V

DD

92 WP1/TD0

93 WP2/TD1

94 WP3/TD2

95 WP4/TD3

96 CH1/TD4

97 CH2/TD5

98 LMRST

99 CHO

100 V

DD

101 CH3/TD6

102 CH4/TD7

103 TD8

104 TD9

105 SD7

106 KBR

107 KBG

108 KBB

109 CHAR

110 SD8

111 AIN7

112 AIN6

113 AIN5

114 AIN4

115 AIN3

116 AIN2

117 AIN1

118 AIN0

119 SHGA

120 Vss

VDD 121

SHGB 122

BIN7 123
BIN6 124
BIN5 125
BIN4 126
BIN3 127
BIN2 128
BIN1 129
BIN0 130

Vss 131

DLC 132

DLY1 133

BGP 135

XBS0 136

TESTOUT 137

EXT0 138

SD9 139

SD10 140

TN 141

XBSI 142

XLS 143
ESY 144
EXT 145

V

DD 146

HS 147

DLY0 148

XH0 149

SD11 150

RST 151

VDD 134

RCLK 152

SD12 153
SD13 154

V

DD 155

YCLK 156

VPN 157

Vss 158

OSC2IN 159

V

DD 160

Pin Name I/O Description

1 Y3C

O Y3C signal output terminal.

2 Vss – Ground terminal.

Pin Name I/O Description

24 RECY7

O

25 V

DD – Power supply terminal.

3 HPC O HPC signal output terminal.
4 FS4 O

FS4 signal output terminal.

5 RECC0

O

7 RECC2

O

6 RECC1

O

8 RECC3 O
9 V

DD – Power supply terminal.

10 RECC4 O
11 RECC5

O

12 RECC6 O

26 SD0

I

27 SD1

I

28 SD2

I

29 SD3

I

18 RECY1

O

19 RECY2 O
20 RECY3 O

21 RECY4

O

22 RECY5

O

23 RECY6

O

17 RECY0 O

(TOP VIEW)

16 VDD – Power supply terminal.

13 RECC7 O
14 Vss

– Ground terminal.

15 Y2C O Y2C signal output terminal.

30 SD4 I
31 Vss – Ground terminal.

REC(Y) signal output terminals.

SD signal input terminals.

REC(C) signal output terminals.

REC(C) signal output terminals.

8

Pin Name I/O Description

32 PVWC0

O

Pin Name I/O Description

89 SD6

I SD signal input terminal.

90 CHOB

O CHOB signal output terminal.

33 PVWC1 O
34 PVWC2

O

35 PVWC3

O

37 PVWC4

O

36 Vss

– Ground terminal.

38 PVWC5 O
39 PVWC6

O

40 PVWC7

O

41 SPC O SPC signal output terminal.
42 V

DD – Power supply terminal.

91 V

DD – Power supply terminal.

92 WP1/TD0

I

93 WP2/TD1

I

94 WP3/TD2

I

83 TM2

I

84 TM1

I

85 TM0

I

86 PAL

I PAL signal input terminal.

87 MD1

I

88 MD0

I

82 WPTST I WPTST signal input terminal.

43 OS1I I OS signal input terminal
44 SD5

I SD signal input terminal.

45 XHI I XH signal input terminal.

95 WP4/TD3 I
46 VDD – Power supply terminal.
47 PVWY0 O
48 PVWY1

O

49 PVWY2 O
50 PVWY3 O
51 PVWY4 O
52 PVWY5

O

53 PVWY6 O
54 PVWY7 O
55 Vss – Ground terminal.
56 V

DD – Power supply terminal.

57 ASY O ASY signal output minals
58 SYC O SYC signal output terminas.

61 VP O VP signal output terminals.

59 HD O HD signal output terminal.
60 VD O VD signal output terminal.

62 OSDB I OSDB signal input terminal.
63 OSDG I OSDG signal input terminal.
64 OSDR I OSDR signal input terminal
65 OSD

I OSD signal input terminal.

66 ST I Strobe signal input terminal.
67 REG5

I

68 REG4 I
69 REG3

I

70 REG2 I
71 REG1 I

72 REG0 I
73 Vss

– Ground terminal.

74 DATA7

I

75 DATA6 I
76 DATA5 I
77 DATA4 I
78 DATA3

I

79 DATA2 I
80 DATA1 I

98 LMRST O LMRST signal output terminal.

100 VDD – Ground terminal.

96 CH1/TD4 I

97 CH2/TD5

I

99 CHOA O CHOA signal output terminal.

101 CH3/TD6 I

102 CH4/TD7 I

103 TD8

I

107 KBG I Green signal input terminal.

108 KBB

I Blue signal input terminal.

109 CHAR I Character signal input terminal.

110 SD8

I SD signal input terminal.

111 AIN7

I

104 TD9

I

105 SD7 I SD signal input treminal.

106 KBR

I Red signal input terminal.

115 AIN3 I

116 AIN2

I

117 AIN1 I

118 AIN0

I

119 SHGA

I SHGA signal input treminal.

112 AIN6

I

113 AIN5

I

114 AIN4

I

120 Vss – Ground terminal.

121 VDD I Power supply terminal.

123 BIN7 I

127 BIN5 I

128 BIN2

I

129 BIN1 I

131 Vss

– Ground terminal.

124 BIN6 I

125 BIN5 I

126 BIN4 I

81 DATA0 I

130 BIN0 I

Preview(C) signal output terminals.

Preview(C) signal output terminals.

Preview(Y) signal output terminals.

Register signal input terminals.

TM signal input terminals.

MD signal input terminals.

TD signal input terminals.

TD signal input terminals.

A signal input terminals.

122 SHGB

– SHGB signal input terminal.

B signal input terminals.

DATA signal input terminals.

9

Pin Name I/O Description

132 DLC

O DLC signal output terminal.

133 DLY1 O DLY1 signal output terminal.
134 V

DD – Power supply terminal.

135 BGP

O Burst Gate Pulse output terminal.

137 TESTOUT

O TEST signal output terminal.

136 XBSO

O XBSO signal output terminal.

138 EXT0

O External signal output terminal.

139 SD9

I

140 SD10

I

141 TN

I TN signal input terminal.

142 XBSI

I XBSI signal input terminal.

143 XLS I XLS signal input terminal.
144 XSY

I XSY signal input terminal.

145 EXT I External signal input terminal.
146 VDD – Power supply terminal.
147 HS O HS signal output terminal.
148 DLY0 I DLY0 signal input terminal.
149 XH0

O XH signal output terminal.

150 SD11 I SD signal input terminals.
151 RST

I RST signal input terminal.

152 RCLK

I Clock pulse input terminal.

153 SD12 I
154 SD13

I

155 VDD – Power supply terminal.
156 YCLK O

Clock pulse output terminal.

157 VPN O VPN signal output terminal.
158 Vss – Ground terminal.
159 OS2I I Oscillation signal input terminal.
160 VDD – Power supply terminal.

SD Data input terminals.

SD Data input terminals.

2.5. IC28, IC42 and IC59 on the Main Board are using the

PAL 1,135-word x 8-Bit FIFO High Speed Line Buffers
IC YWUPD42102G3.
Description of this IC is as follows:

(TOP VIEW)

DO0 1
DO1 2
DO2 3
DO3 4

RE 5

RSTR 6

GND 7
RCK 8

DO4 9
DO5 10
DO6 11
DO7 12 13 DI7

14 DI6

15 DI6

16 DI4

17 WCK

18 V

DD

19 RSTW

20 WE

21 DI3

22 DI2

23 DI1

24 DI0

Pin Name I/O Description
1 DO0

O

2 DO1

O

3 DO2

O

4 DO3 O
5 RE

I Read Enable signal input terminal.

6 RSTR

I Reset Read pulse input terminal.

7 GND

– Ground terminal.

8 RCK

I Read Clock pulse input terminal.

9 DO4

O

10 DO5

O

11 DO6

O

12 DO7

O

13 DI7

I

15 DI5

I

14 DI6

I

16 DI4

I

17 WCK I Write Clock pulse input terminal.
18 V

DD – Power supply terminal.

19 RSTW

I Reset Write Pulse input terminal.

20 WE

I Write Enable signal input terminal.

21 DI3

I

22 DI2

I

23 DI1

I

24 DI0

I

Data input terminals. (8-Bit)

Data input terminals. (8-Bit)

Data output terminals. (8-Bit)

Data output terminals. (8-Bit)

2.4. IC64 on the Main Board is using the 3-Terminal

Voltage Regulator IC YW78L09UATE2.
Description of these IC is as follows:

Output 1

GND 2
Input 3

Reference
Voltage
Generator

Over-current

Protector

Over-heat Protector

3

1

2

Error Amp.

Input

Output

GND

10

2.8. IC511 and IC512 on the Main Board are using the

Video Sync. Separator IC YWLM1881M.
Description of this IC is as follows:

2.6. IC12, IC47, IC49, and IC50 on the Main Board are

using the Single 2-Input AND Gate IC YWSC7S08F.
Description of this IC is as follows:

2.7. IC14 on the Main Board is using the Dual 6dB Video

Amplifier IC with 75Ω Driver YWNJM2268V.
Description of this IC is as follows:

5 Vcc

4 OUT

IN1 1
IN2 2

GND 3

(TOP VIEW)

Output

L
H
L
H

H
H
H

L

L

L
H
H

Truth Table

Inputs

IN1 IN2

75 Ω
Driver

6 dB
Amp.

6

3

4

VSAG1

GND

Vcc

BiasClamp

6 dB
Amp.

75 Ω
Driver

2.8K 2.8K

2.2K

750

7

2

8

1

5

8 VIN2
7 Vcc
6 N.C.
5 V

OUT2

V

IN1 1

GND 2

V

SAG1 3

V

OUT1 4

(TOP VIEW)

VIN1

V

IN2

V

OUT1

N.C.

V

OUT2

Pin Name I/O Description

1 V

IN1 I Input terminal for Amplifier 1.

2 GND

– Ground terminal.

3 VSAG1 – Sag compensation terminal for Amplifier 1.
4 V

OUT1 O Output terminal for Amplifier 1.

5 V

OUT2 O Output terminal for Amplifier 2.

7 Vcc

– Power supply terminal.

6 N.C.

– Non connection.

8 VIN2 I Input terminal for Amplifier 2.

1
2
3
4

8
7
6
5

Comp.
Sync

GND

V

CC

Odd/Even
Field Index

R

SET

(TOP VIEW)

Video In

Vertical

Sync

Burst/Back
Porch Clamp

R

SET GND

Video

In

V

CC

Comp.
Sync

Odd/
Even
Field
Index

Burst/
Back
Porch
Clamp

Vertical
Sync

VCC

VCC

8

2

1

3

6

+
–

–
+

VA

VB

V

+
–

V1

+
–

+
–

V2

V2

V1

CK

R

Q

CK

Q

D

D

–
+

+
–

SRQ

Q

1/8

OSC

Regulator

–
+

+
–

Capacitor Charge

Current

4

7

5