JVC AV-27F802/SME Schematics

AV-27F802

AV-27F802/SME STANDARD CIRCUIT DIAGRAM

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NOTE ON USING CIRCUIT DIAGRAMS

1. SAFETY

The components identified by the symbol and shading are
critical for safety. For continued safety replace safety critical
components only with manufactures recommended parts.

2. SPECIFIED VOL T A GE AND WA VEFORM V ALUES

The voltage and waveform values have been measured under the
following conditions.

(1) Input signal : Color bar signal

Setting positions of each knob/button and

(2)

variable resistor

(3) Internal resistance of tester : DC 20kØ/V
(4) Oscilloscope sweeping time : H ⇒ 20µS/div

(5) Voltage values : All DC voltage values

: Original setting position when

shipped

:V ⇒ 5mS/div
: Others ⇒ Sweeping time is

specified

9Since the voltage values of signal circuit vary to some extent ac-

cording to adjustments, use them as reference values.

3. INDICATION OF PARTS SYMBOL [EXAMPLE]

In the PW board : R1209 → R209

•

Type

•

No indication : Ceramic capacitor
MY : Mylar capacitor
MM : Metalized mylar capacitor
PP : Polypropylene capacitor
MPP : Metalized polypropylene capacitor
MF : Metalized film capacitor
TF : Thin film capacitor
BP : Bipolar electrolytic capacitor
TAN : Tantalum capacitor

(3) Coils

No unit : [µH]
Others : As specified

(4) Power Supply

:B1
: B2(12V)
:9V
:5V

9Respective voltage values are indicated

(5) Test point

: Test point
: Only test point display

4. INDICATIONS ON THE CIRCUIT DIAGRAM

(1) Resistors

Resistance value

•

No unit : [Ø]
K:[KØ]
M:[MØ]
Rated allowable power

•

No indication : 1/10 [W]
Others : As specified
Type

•

No indication : Carbon resistor
OMR : Oxide metal film resistor
MFR : Metal film resistor
MPR :Metal plate resistor
UNFR : Uninflammable resistor
FR : Fusible resistor

9Composition resistor 1/2 [W] is specified as 1/2S or Comp.

(2) Capacitors

Capacitance value

•

1 or higher : [pF]
less than 1 :[µF]
Withstand voltage

•

No indication : DC50[V]
AC indicated : AC withstand voltage [V]
Others : DC withstand voltage [V]

9 Electrolytic Capacitors

47/50[Example] : Capacitance value [µF]/withstand voltage[V]

(6) Connecting method

: Connector
: Wrapping or soldering
: Receptacle

(7) Ground symbol

: LIVE side ground
: ISOLATED(NEUTRAL) side ground
: EARTH ground
: DIGITAL ground

5. NOTE FOR REPAIRING SERVICE

This model’s power circuit is partly different in the GND. The difference
of the GND is shown by the LIVE : (
ISOLATED(NEUTRAL) : (
for the following points.

(1)Do not touch the LIVE side GND or the LIVE side GND and the

ISOLATED(NEUTRAL) side GND simultaneously. If the above cau­tion is not respected, an electric shock may be caused. Therefore,
make sure that the power cord is surely removed from the recepta­cle when, for example, the chassis is pulled out.

(2) Do not short between the LIVE side GND and ISOLA TED(NEUTRAL)

side GND or never measure with a measuring apparatus ( oscillo­scope, etc.) the LIVE side GND and ISOLATED(NEUTRAL) side
GND at the same time. If the above precaution is not respected , a
fuse or any parts will be broken.

) side GND. Therefore, care must be taken

) side GND and the

Since the circuit diagram is a standard one, the circuit and cir-

•

cuit constants may be subject to change for impro vement with­out any notice.

Dec. 2000 No. 51785

AV-27F802

CONTENTS

SEMICONDUCTOR SHAPES............................................................................................................................2-2

BLOCK DIAGRAM ......................................................................................................................................................2-3

CIRCUIT DIAGRAMS................................................................................................................................................2-5

MAIN PWB CIRCUIT DIAGRAM
MAIN, FRONT, POWER SW PWB CIRCUIT DIAGRAMS
PIP PWB CIRCUIT DIAGRAM
AV SW PWB CIRCUIT DIAGRAM
CRT SOCKET PWB CIRCUIT DIAGRAM
DAF PWB CIRCUIT DIAGRAM
LF PWB CIRCUIT DIAGRAM

PATTERN DIAGRAMS ...........................................................................................................................................2-21

MAIN PWB PATTERN.........................................................................................................................

AV SW, CRT SOCKET, DAF, FRONT, POWER SW, LF PWB PATTERN

PIP PWB PATTERN ............................................................................................................................

..................................................................................................................................2-5

...................................................................................2-9

.................................................................................................................................... 2-11

.............................................................................................................................2-13

..............................................................................................................2-15

..................................................................................................................................2-17

......................................................................................................................................2-19

2-21

.....................................................2-23

2-25

SEMICONDUCTOR SHAPES

TRANSISTOR

E
C
B

ECB

IC

OUT
E
IN

IN E OUT

CHIP IC

N

N

EC

B

(G)(D)(S)

ECB

1N

TOP VIEW

1

ECB

1N

TOP VIEWBOTTOM VIEW FRONT VIEW

CHIP TR

C

B

E

TOP VIEWBOTTOM VIEW FRONT VIEW

1N

N

1

N

2-2 No.51785

N

BLOCK DIAGRAM

AV-27F802/SME BLOCK DIAGRAM

AV-27F802 AV-27F802

J602
COMPONENT
VIDEO-IN

J601
COMPONENT
VIDEO-IN

PIP PWB

AV SW PWB (1/2)

J501

INPUT1

J502

INPUT4

J504

INPUT2

J503

OUTPUT

J401

INPUT3

TU001

TUNER

RY
BY

Y

RY
BY

Y

SCL
SDA

TU001

TUNER

S-VIDEO
VIDEO
AUDIO L/MONO
AUDIO R
S-VIDEO
VIDEO
AUDIO L/MONO
AUDIO R

AUDIO L/MONO
AUDIO R

AUDIO L
AUDIO R

S-VIDEO
VIDEO
AUDIO L/MONO
AUDIO R

IF R, G, B

SCL
SDA

IC601

VIDEO2/VIDEO4

INPUT SELECT

V-PIP(TV)

AFC2

IC301

PIP

CONTROLLER

V-PIP(EXT.)

SCL
SDA

IC501

AV SW

R-Y
B-Y

Y

HP

VP

L/R
L/R
VIDEO
C
Y

IC381

AUDIO SW

OSD-R
OSD-G
OSD-B

MEMORY

VC-R
VC-G
VC-B

IC702

IC371

AMP

SCL
SDA

SCL
SDA

Y
C

IC701

MICRO

COMPUTER

IC101

1 CHIP DECODER

Y

IC151

Y/C SW

C

IF

SIF
MPX
V. OUT
H. OUT

Y
C
Y
C

CF021

CF041

VTV

3D Y/C MODULE PWB

IC201

3D Y/C

SEP.

SCL
SDA

Y
C

Y

Q302, Q303

AMP

SCL
SDA

MTS&TONE/VOL

L/R
L/R

C

IC001

CONTROL

L/R

IC202

MEMORY

Q311, Q312

AMP

CRT SOCKET PWB

IC151

SOUND

ENHACEMENT

AUDIO PROCESSOR

IC401

VERT OUT

Q511

H. OUT

R, G, B

RGB DRIVE

AV SW PWB (2/2)

IC401

AUDIO OUT

L/R

DAF PWB

V01

SP

SP

V

H

DY01

DEF YOKE

L

R

VOL+

VOL- CH+ CH- MENU

FRONT PWB

POWER REMOCON

RECEIVER

POWER SW PWB

ON TIMER

LED

AC IN

2-3 2-4

LF PWB

MAIN PWB

REG.

POWER SUPPLY

CIRCUIT

T502

FBT

B1

FOCUS

SCREEN

HV

No.51785No.51785

CIRCUIT DIAGRAMS

MAIN PWB CIRCUIT DIAGRAM

AV-27F802 AV-27F802

3D Y/C MODULE SAC-0Y501A

INPUT4

INPUT2

8.8V

4.5V

4.9V

0V

3.2V0V

4.2V

4.2V

4.2V

2.4V

7V

2.6V

2.6V

2.6V

4.3V

0V

0V

3.1V

3.1V

4.5V

0V0V

4.6V

IC101

47

1.0Vp-p(H

V

5.1

42

)

0.68Vp-p(H

)

8.8V

4.8V

4.1V

8.8V

4.6V

4.6V

0V

4.5V

0V

4.9V

2.4

2.1V
V

0V

4.8V

2.5V

8.8
V

3.3

2.4

3.8

V

V

4V

V

2.1V

8.8V

4.4

3.8

V

V

2.3V

1.6V

2.1V

8.8V

7V

5.7V

3.1
V

2.3V

2.2V

3.1V

2.3V

2.4V

8.8V

2.5V

0V 4.8V

3.9V

8.9V

6.8V

1.9V

3.1V

0.6V

0V

0V

0.9

0V

V

2.7V

3.3V

4.9V

8.8V

4V

3.4V

3.2

3.3V

V

4.2V

2.6V

3.3V

3.7V

IC101

1.9Vp-p(V

CNMD1

CNMD1

38

2.2Vp-p(H

1.6Vp-p(H

CNMD1

2.1Vp-p(H

)

4.9V

27

)

24

)

17

)

11.8V

2.6V

4.9V

3.3
V

11.8V

4.9V

15.7
V

8.8
V

12.7V

4.9
V

34

IC101

)

3.7V

3.1V

4.7V4.6V

2.4V

2.7V

4.7V

31.6V

0V

1.8V

8.8V

1.1V

4.9V

4V

3V

3.1V

1.7V

1.7V

0.6V

7.3
V

2.8V

4.8V

2.4V

2.4V

2.5V
0V3V0V

2.2V

2.2V

2.2V

8.9V

2.4V

2.7V

3.1V 0V

5.9V

1.5V

4.6
V

4.6Vp-p(H

8.8
V

9V

8.4
V

MAIN PWB ASS’Y
SAC-1541A-M2

CRT SOCKET

PWB

No.51785 No.51785

2-5 2-6

14

4.0Vp-p(H

IC101

15

)

3.5Vp-p(H

16

3.5Vp-p(H

)

)

MAIN PWB CIRCUIT DIAGRAM

AV-27F802 AV-27F802

32Vp-p(V

37

)

TO INNER PIN PB

DAF
PWB

FOR ADJ.

CONNECTOR

TO CRT SOCKET PWB

LF

PWB

0V

0.6V

14.1

-14.3V

0.6V

1.4V

0V

0.7V

5V

4.4V

5V

5V

0V

2.5V2.5

-11.7V

V

V

0.2

14.6V

V

TO DAF PWB

11.8

4.4V

V

3.9V

2

IC401

60Vp-p(V

IC401

)

)

17.6V

1100Vp-p(H

133V

764

T502 T502

)

150Vp-p(H

82

T502

90Vp-p(H

150Vp-p(H

T502

)

100Vp-p(H

T502

)

33Vp-p(H

9

T502

)

6Vp-p(V

)

)

B

Q501

0V

18.6V

155V

0V

1.8V

0V

5V

4.9V

PC921
TLP621(B

134V

11.2V

)

-12.2V

0.8Vp-p(H)140Vp-p(H

Q501

C

)

72.4
V

0.2V

3.4V

-0.1V

B

Q511

)

2.4Vp-p(H

3.8V

3.9V

3.2V

0.6V

0.6V

SAC-1541A-M2

C999

BW

3300p
QCZ9073-332

No.51785 No.51785

2-82-7