JVC AV-21P8(PH), AV-27D502/R, AV-27D502/S Schematics

AV-27D502

SCHEMATIC DIAGRAMS

COLOR TELEVISION

BASIC CHASSIS

AC

AV-27D502 AV-27D502

CD-ROM No. SML200103

/R

/S

TV

No. 51797

Mar. 2001

AV-27D502

AV-27D502 /R AV-27D502 /S STANDARD CIRCUIT DIAGRAM

q

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 VOLTAGE AND WAVEFORM VALUES

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

(1) Input signal : Color bar signal (2)

Setting positions of each knob/button and 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 : ( ) side GND and the ISOLATED(NEUTRAL) : ( ) side GND. Therefore, care must be taken 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 ISOLATED(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.

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

•

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

Mar. 2001 No. 51797

AV-27D502

SEMICONDUCTOR SHAPES

TRANSISTOR

E

C

B

ECB

IC

OUT

E

IN

IN E OUT

CHIP IC

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.51797

N

BLOCK DIAGRAM

TU001

TUNER

Y

J601

COMPONENT

VIDEO-IN

PIP PWB

AV SELECTOR PWB (1/2)

J501

INPUT1

J502

INPUT2

J503

AUDIO OUT

J401-J403

INPUT3

(FRONT)

FRONT AV INPUT PWB

B

P

R

SCL0

SDA0

TU001

TUNER

S-VIDEO

VIDEO

AUDIO L/MONO

AUDIO R

S-VIDEO

AUDIO L/MONO

AUDIO R

AUDIO L

AUDIO R

VIDEO

AUDIO L/MONO

AUDIO R

AV-27D502 AV-27D502

IF R, G, B

SCL0 SDA0

V-PIP(TV)

AFC2

SCL0,SDA0

CONTROLLER

IC301

PIP

V-PIP(EXT.)

IC501

AV SW

SCL0 SDA0

HP VP

C Y TV

L/R

VIDEO

C Y

IC201

3L DIGITAL

COMB FILTER

SCL0 SDA0

COM_Y COM_CB COM_CR

VC-R VC-G VC-B

C

Y

OSD-R,OSD-G,OSD-B

IC702

EEPROM

Y

LPF

C

BPF

IC371

AMP

IC101

1 CHIP DECODER

AMP

BUF

SDA1

SCL0 SDA0

SCL1

IF

SIF

MPX

V. OUT

H. OUT

Y

C

IC701

MICRO

COMPUTER

CF021

4.5MHz TRAP

CF041

4.5MHz BPF

VTV

SCL0 SDA0

MTS&TONE/VOL

L/R

IC001

CONTROL

L/R

CRT SOCKET PWB

CNMPX

AUDIO_L/R

IC151

SOUND

ENHANCEMENT

AUDIO PROCESSOR

IC401

VERT OUT

Q511

H. OUT

R, G, B

RGB DRIVE

AV SELECTOR PWB (2/2)

IC401

AUDIO OUT

L/R

V01

SP

L

SP

R

V

H

DY01

DEF YOKE

POWER

VOL+

VOL- CH+ CH- MENU

REMOCON RECEIVER

FRONT CONTROL PWB

ON TIMER

LED

AC IN

LF PWB

MAIN PWB

No.51797 No.517972-3 2-4

REG.

POWER SUPPLY

CIRCUIT

B1

T502

FBT

FOCUS

SCREEN

HV

CIRCUIT DIAGRAMS

MAIN PWB CIRCUIT DIAGRAM

COMPONENT VIDEO INPUT

MAIN PWB ASS’Y

AV-27D502 AV-27D502

CNMD1 X

INPUT2

(

NOT USED

SAC-1506A-M2 (

AV-27D502

)

/S

SAC-1507A-M2 (

AV-27D502

)

8.7V

1.4V

0.8 V

)

/R

CNOL1 X

8.7V

4.3V

3.7V

0V

0.6V

0V

8.7

3.6V

0V

V

2.9V

3.6V

8.7

2.5 V

3.4

2.4

V

2.1V

4.0V

2.2V

1.6V

2.1V

2.3V

2.2V

3.8V

2.6V

4.8

8.7

0V

6.7V1.8V1.4

V

3.9V

0.9

0V

V

8.8V

4.0V

3.3V

13.2V

8.7V

R287 X

3.3

3.4V

V

0.4V

1.4V

4.9V

7.2V

CNOE1

X

2.6V

38

IC101

)

1.7Vp-p(V

34

IC101

)

IC101

4.7V

47

1.2Vp-p(H

2.7V

2.4 V

4.7V 31.5V

42

)

0.92Vp-p(H

0V

)

No.51797 No.51797

3.6V

1.6V

3.0V

8.7V

1.0V

2.9V

4.9V

3.9V

3.1V

1.9V

1.8V

0.6V

3.0V

2.4V

2.9V

2-5 2-6

1.5V

4.8

2.3

V

2.2

2.3

3.0

0V

V

CRT SOCKET

PWB

2.2V

8.8V

2.2

0V

V

IC101

14

)

4.0Vp-p(H

IC101

15

)

3.5Vp-p(H

V

16

4.0Vp-p(H

2.8V2.5

5.5

1.9

0V

V

)

4.4Vp-p(H

5.6V

8.7V

5.0 V

NOTE

BW

BUS WIRE

:

X NON MOUNT

:

2SC2412K/QR/-X

:

1

2SA1037AK/QR/-X

:

2

1SS133-T2

:

3

MTZJ9.1C-T2

:

4

DTC124EKA-X

:

5

:8 MTZJ8.2C-T2

MAIN PWB CIRCUIT DIAGRAM

LF

PWB

AV-27D502 AV-27D502

2

IC401

)

IC401

60Vp-p(V

32Vp-p(V

37

)

FOR ADJ. CONNECTOR

0V

0.6V

2.4V

-13.7V

0.7V

1.3V

0V

0.7V

13.8

2.4V

-10.7V

14.7V

V

R403

0.82

R404

0V

155.4V

16.9V

1.6V

5.0V

5.0V 0V

0V

21.6V

B

Q511

)

B

Q501

)

0V

14.2V

0V

8.6V

132V

134.9V

11.0V

1.0Vp-p(H

Q501

140Vp-p(H

C

)

80.9V

0.3V

-0.1V

2.4Vp-p(H

0V

76

T502 T502

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

FR524

4.7 2W FR QRX029J-4R7

FR523

4.7 2W FR QRX029J-4R7

)

1100Vp-p(H

C515

0.4 QFZ0197-404

482

T502

33Vp-p(H

T502

)

90Vp-p(H

T502

)

90Vp-p(H

)

6Vp-p(V

)

9

T502

CRT SOCKET PWB

DIFFERENCE LIST

R404 L511 L521 C510

SAC-1506A-M2

SAC-1507A-M2

NOT USED

QRE121J-100Y

(

PARTS

)

QQR1027-004

QQR1027-002

134.8V

134.4V

0V

88#$#H QQLZ026-880 43#$#H10#?# QQLZ026-430

MAIN PWB ASS’Y SAC-1506A-M2(AV-27D502 SAC-1507A-M2(AV-27D502

4500pF QFZ0196-452 3500pF QFZ0196-352

)

/S

)

/R

No.51797 No.517972-7 2-8

NOTE

BW

BUS WIRE

:

X NON MOUNT

:

1

2SC2412K/QR/-X

:

2

2SA1037AK/QR/-X

:

3

1SS133-T2

:

4

QQR0582-001Z

:

JVC AV-21P8(PH), AV-27D502/R, AV-27D502/S Schematics

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

SEMICONDUCTOR SHAPES

BLOCK DIAGRAM

CIRCUIT DIAGRAMS