JVC AV21BF5EES, AV21BF5ENS Schematics

SCHEMATIC DIAGRAMS

COLOUR TELEVISION

AV21BF5ENS
AV21BF5EES

CD-ROM No.SML200201

AV21BF5ENS
AV21BF5EES

CONTENTS

NOTE ON USING CIRCUIT DIAGRAMS

SEMICONDUCTOR SHAPES

BLOCK DIAGRAM

WAVEFORM DIAGRAMS

CIRCUIT DIAGRAMS

PATTERN DIAGRAMS

VOLTAGE TABLES

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

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No.51879

Jan. 2002

AV21BF5ENS

STANDARD CIRCUIT DIAGRAM

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
foll owin g condition s.

(1)Input signal : Colour bar signal

(2)Setting positions of
each knob/button and
variable resistor

(3)Internal resistance of tester

:DC 20k

/V

(4)Oscilloscope sweeping time

:H

20µS/div

:V

5mS/div

:Others

Sweeping time is
specified

(5)Voltage values

:All DC voltage values

Sin ce the voltage values of signal circui t vary to some extent
according to adjustments, use them as reference values.

3.INDICATIONS ON THE CIRCUIT DIAGRAM

(1)Resistors

Resistance value

No unit :[

]

K

:[K

]

M

Ty pe

No indication

:Carbon resistor

OM R

:Oxi de metal film resistor

MFR

:Met al film resi stor

MPR

:Metal plate resistor

UNFR

:Uninflammable resistor

FR

:Fusible resistor

Composition resist or 1/2 [W] is spec ified as 1/2S or Comp.

(2)Capacitors

: Original setting position
when shipped

4.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 e xample, 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 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
circuit constants may be subject to change for improvement
without a ny notice.

NOTE
Due improvement in performance, some part numbers show
in th e circui t diagram may not agree with those i ndicated in
the part list.
When ordering parts, please use the numbers that appear
in the Part s List.

Ty pe

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) Coi ls

No unit

:[

µ

H]

Others

:As specified

:[M ]

Capacitance valu e

1 or higher :[pF]

less than 1

:[µF]

Withstand voltage

No indication :DC50[V]

Others :DC withstand voltage [V]

AC indicated

:AC withstand voltage [V]

Electrolytic C apaci tors

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

No indication

:Ceramic capacitor

AV21BF5ENS
AV21BF5EES

AV21BF5EES

WAVEFORM DIAGRAMS

MAIN PWB

AV21BF5ENS

AV21BF5EES

Q802 D

IC401 6pin IC050 6pin IC050 17pin

8Vp-p(H) 1.7Vp-p(H) 0.7Vp-p(H) 1.4Vp-p(H)

IC401 17pin

IC401 30pin

2-4

0.7Vp-p(H) 0.8Vp-p(H) 0.9Vp-p(H) 2Vp-p(H)

IC401 20pin

IC401 21pin

2Vp-p(H) 2Vp-p(H) 1Vp-p(H) 450Vp-p(H)

0.6Vp-p(V) 4.8Vp-p(V) 0.5Vp-p(V) 1.2Vp-p

CRT SOCKET PWB

35Vp-p(H) 35Vp-p(H) 35Vp-p(H)

IC401 29pin IC401 19pin

IC901 9pinIC901 8pinIC901 7pin

No.51879

Q605 CIC401 40pin

IC501 34pinIC701 9pinIC401 47pin IC701 1pin

Jan. 2002 No. 51879

AV21BF5ENS

TV-TEXT CONTROLLER

SDA 555X

PLL TUNER

UV1315/6

SERVICE

CONNECTOR

CTI &

COMB FILTER

SPEAKERS

8R 6/12W

RGB AMP.

TDA 6108

8R 6/12W

I2C

AUDIO

OUTPUTS

TDA2615/6

TDA2614(MONO)

SMPS

(Mc44604)

NVM KEYPAD

VIDEO SWITCH

TEA6415

VERTICAL

OUTPUT TDA8351/6

HORIZONTAL

OUTPUT

FBT

CRT

IR.

FRONTAV

115/150VDC

+12VDCAud.

-12VDCAud.

12VDC

8VDC

5VDC

3.3V st-by

2.5V st-by

SCART1 SCART2 SVHS

VIDEO PROCESSOR

TDA 884X

MSP 34X0D

DIGITAL SOUND PROCESSOR

AV21BF5EES

CONTENTS

AV21BF5ENS

AV21BF5EES

BLOCK DIAGRAM

SEMICONDUCTOR SHAPES

BLOCK DIAGRAM
WAVEFORM DIAGRAMS

CIRCUIT DIAGRAMS

MAIN PWB CIRCUIT DIAGRAM
MULTISOUND PWB CIRCUIT DIAGRAM
CRT SOCKET PWB CIRCUIT DIAGRAM
FRONT CONTROL PWB CIRCUIT DIAGRAM
HEADPHONE JACK PWB CIRCUIT DIAGRAM

PATTERN DIAGRAMS

MAIN PWB PATTERN
MULTISOUND, HEADPHONE JACK, CRT SOCKET & FRONT CONTROL PWB PATTERN

VOLTAGE TABLES

SEMICONDUCTOR SHAPES

TRANSISTOR

BOTTOM V IEW

E
C

B

IC

BOTTOM VIEW FRONT VIEW TOP VIEW

OUT
E

IN

CHIP IC

N

N

ECB

IN OUTE

FRONT VI EW

BCE

(G)(D)(S )

1 N

TOP VIEW

ECB

ECB

1 N

1

CHIP TR

1

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2-9
2-9
2-9

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2-13

2-15

TOP VIEW

C

BE

N

2-2

N

1

N

N

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