JVC AV-27260/R, AV-27260/S, AV-27260/Z Schematics

AV-27260

SCHEMATIC DIAGRAMS

COLOR TELEVISION

BASIC CHASSIS

AC

AV-27260 AV-27260

AV-27260

CD-ROM No. SML200103

/R

/S

/Z

TV

No. 51800

Feb. 2001

AV-27260 /R AV-27260 /S AV-27260 /Z 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

AV-27260

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.

Feb. 2001 No. 51800

AV-27260

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.51800

N

BLOCK DIAGRAM

J601

COMPONENT

VIDEO-IN

PIP PWB

AV SELECTOR PWB (1/2)

J501

INPUT1

TU001

TUNER

Y

B

P

R

SCL0 SDA0

TU001

TUNER

S-VIDEO

VIDEO

AUDIO L/MONO

AUDIO R

AV-27260

IF R, G, B

SCL0 SDA0

V-PIP(TV)

AFC2

SCL0,SDA0

CONTROLLER

IC301

PIP

V-PIP(EXT.)

SCL0 SDA0

HP VP

SCL0 SDA0

COM_Y COM_CB COM_CR

VC-R VC-G VC-B

C

Y

OSD-R,OSD-G,OSD-B

IC702

EEPROM

IC101

1 CHIP DECODER

AMP

BUF

SCL1 SDA1

SCL0 SDA0

IF

SIF

MPX

V. OUT

H. OUT

Y

C

IC701

MICRO

COMPUTER

AV-27260

CF021

4.5MHz TRAP

CF041

4.5MHz BPF

VTV

SCL0 SDA0

MTS&TONE/VOL

L/R

CNMPX

AUDIO_L/R

IC001

CONTROL

L/R

CRT SOCKET PWB

RGB DRIVE

AV SELECTOR PWB (2/2)

L/R

R, G, B

IC401

AUDIO OUT

V01

SP

L

SP

R

J502

INPUT2

J503

AUDIO OUT

J401

INPUT3

(FRONT)

AUDIO L/MONO

AUDIO R

AUDIO L

AUDIO R

VIDEO

AUDIO L/MONO

AUDIO R

FRONT AV INPUT PWB

POWER

VOL+

VOL- CH+ CH- MENU

REMOCON RECEIVER

FRONT CONTROL PWB

ON TIMER

LED

IC501

AV SW

C Y TV

L/R

VIDEO

C Y

AC IN

IC201

3L DIGITAL

COMB FILTER

Y

C

LF PWB

LPF

BPF

IC371

AMP

MAIN PWB

REG.

POWER SUPPLY

CIRCUIT

B1

IC401

VERT OUT

Q511

H. OUT

T502

FBT

V

H

DY01

DEF YOKE

FOCUS

SCREEN

HV

2-3 2-4No.51800 No.51800

CIRCUIT DIAGRAMS

MAIN PWB CIRCUIT DIAGRAM

COMPONENT VIDEO INPUT

MAIN PWB ASS’Y

AV-27260

CNMD1 X

INPUT2

(

NOT USED

SAC-1526A-M2 (

AV-27260

)

/Z

SAC-1527A-M2 (

AV-27260

)

/S

SAC-1528A-M2 (

AV-27260

)

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

4.7V

38

IC101

)

1.7Vp-p(V

34

IC101

)

IC101

47

1.2Vp-p(H

2.7V

2.4 V

4.7V 31.5V

42

)

0.92Vp-p(H

0V

)

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

1.5V

4.8

2.3

V

2.2

2.3 V

V

CRT SOCKET

PWB

2.2V

3.0

2.2

0V

V

IC101

4.0Vp-p(H

15

3.5Vp-p(H

8.8V

2.8V2.5

5.5

1.9

0V

V

14

)

IC101

16

)

4.0Vp-p(H

V

)

2-5 2-6No.51800

4.4Vp-p(H

5.6V

8.7V

5.0 V

No.51800

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

TH901

POSISTOR

AV-27260

0.7V

1.3V

0V

0.7V

AV-27260

0V

2

IC401

)

IC401

60Vp-p(V

32Vp-p(V

37

)

FOR ADJ. CONNECTOR

0.6V

2.4V

-13.7V

13.8

2.4V

-10.7V

14.7V

V

R403

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

)

2W

FR523

2W

)

1100Vp-p(H

C515

482

T502

33Vp-p(H

T502

)

90Vp-p(H

)

T502

90Vp-p(H

)

6Vp-p(V

)

9

T502

CRT SOCKET PWB

DIFFERENCE LIST(PARTS

R403

SAC-1526A-M2

SAC-1527A-M2

SAC-1528A-M2

110

QRX01GJ-1R0

0.82

QRX01GJ-R82

0.82

QRX01GJ-R82

)

R404

QRE121J-100Y

NOT USED

10

QRE121J-100Y

134.8V

134.4V

MAIN PWB ASS’Y SAC-1526A-M2(AV-27260 SAC-1527A-M2(AV-27260 SAC-1528A-M2(AV-27260

L511 L521

QQR1027-004

QQR1027-002

100 H

QQLZ026-101

88 H

QQLZ026-880

43 H

QQLZ026-430

C510

3500pF

QFZ0196-352

4500pF

QFZ0196-452

3500pF

QFZ0196-352

No.51800 No.51800

C515

0.43 F

QFZ0197-434

0.4 F

QFZ0197-404

0.4 F

QFZ0197-404

)

/Z

)

/S

)

/R

FR523

2.7

QRX029J-2R7

4.7

QRX029J-4R7

4.7

QRX029J-4R7

0V

FR524 TH901

2.7

QRX029J-2R7

4.7

QRX029J-4R7

4.7

QRX029J-4R7

QAD0129-3R0

CEKP007-002

2-7 2-8

NOTE

BW

BUS WIRE

:

X NON MOUNT

:

2SC2412K/QR/-X

1

:

2SA1037AK/QR/-X

2

:

1SS133-T2

3

:

QQR0582-001Z

4

:

JVC AV-27260/R, AV-27260/S, AV-27260/Z Schematics

CONTENTS

SEMICONDUCTOR SHAPES

BLOCK DIAGRAM

CIRCUIT DIAGRAMS