JVC LT-32A80ZU Schematic

SCHEMATIC DIAGRAMS

LCD INTEGRATED DIGITAL TELEVISION

LT-26A80SU, LT-26A80ZU, LT-26DA8BJ, LT-26DA8SJ, LT-26DA8SU, LT-26DA8ZU, LT-26DT8ZJ, LT-32A80SU, LT-32A80ZU,

LT-32DA8BJ, LT-32DA8SJ, LT-32DA8SU, LT-32DA8ZU, LT-32DT8ZJ

[A80 series]

[DA8 series] [DT8 series]

CD-ROM No.SML200704

BASIC CHASSIS

FT3

No.YA509

2007/4

LT-26A80SU, LT-26A80ZU, LT-26DA8BJ, LT-26DA8SJ

LT-26DA8SU, LT-26DA8ZU, LT-26DT8ZJ, LT-32A80SU, LT-32A80ZU LT-32DA8ZU

LT-32DA8BJ, LT-32DA8SJ, LT-32DA8SU,

LT-32DT8ZJ

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 ciritical 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 : Colour bar signal

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

(3)Internal resistance of tester

(4)Oscilloscope sweeping time

(5)Voltage values

Since the voltage values of signal circuit vary to some extent according to adjustments, use them as reference values.

: Original setting position when shipped

: DC 20kΩ/V

: H

: V

: Othters

: All DC voltage values

20µs / div

5ms / div

Sweeping time is specified

3.INDICATION OF PARTS SYMBOL [EXAMPLE]

In the PW board

: R209

R209

4.INDICATIONS ON THE CIRCUIT DIAGRAM

(1)Resistors

Resistance value

No unit : [Ω]

K M

Rated allowable power No indication : 1/16 [W]

Others : As specified

Type

No indication

OMR

MFR

MPR

UNFR

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

(2)Capacitors

Capacitance value

1 or higher : [pF]

less than 1

Withstand voltage

No indication : DC50[V]

Others : DC withstand voltage [V]

AC indicated Electrolytic Capacitors

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

: [kΩ]

: [MΩ]

: Carbon resistor

: Oxide metal film resistor

: Metal film resistor

: Metal plate resistor

: Uninflammable resistor

: Fusible resistor

: [µF]

: AC withstand voltage [V]

Type

No indication

MM PP MPP MF TF BP

TAN

(3)Coils

No unit

Others

(4)Power Supply

Respective voltage values are indicated

(5)Test point

: Test point

(6)Connecting method

(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 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 any notice.

NOTE Due improvement in performance, some part numbers show in the circuit diagram may not agree with those indicated in the part list. When ordering parts, please use the numbers that appear in the Parts List.

: Ceramic capacitor : Metalized mylar capacitor

: Polypropylene capacitor : Metalized polypropylene capacitor : Metalized film capacitor : Thin film capacitor : Bipolar electrolytic capacitor : Tantalum capacitor

: [µH]

: As specified

: B1

: 9V

: Only test point display

: Connector

: Receptacle

: Wrapping or soldering

: B2 (12V

: 5V

)

(No.YA509)2-1

CONTENTS

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

WIRING DIAGRAM ........................................................................................2-3

BLOCK DIAGRAM ........................................................................................2-5

CIRCUIT DIAGRAMS

MAIN PWB CIRCUIT DIAGRAM ................................................................................................................ 2-7

POWER PWB CIRCUIT DIAGRAM .......................................................................................................... 2-13

LED PWB CIRCUIT DIAGRAM ................................................................................................................. 2-15

SW PWB CIRCUIT DIAGRAM ................................................................................................................. 2-17

PATTERN DIAGRAMS

MAIN PWB PATTERN .............................................................................................................................. 2-19

POWER PWB PATTERN .......................................................................................................................... 2-23

LED PWB PATTERN ................................................................................................................................ 2-24

SW PWB PATTERN ................................................................................................................................. 2-24

VOLTAGE CHARTS .................................................................................. 2-25

WAVEFORMS ............................................................................................ 2-26

USING P.W. BOARD

P.W.B ASS’Y name

MAIN P.W. BOARD

SW P.W. BOARD

LED P.W. BOARD

POWER P.W. BOARD

P.W.B ASS’Y name

MAIN P.W. BOARD

SW P.W. BOARD

LED P.W. BOARD

POWER P.W. BOARD

LT-26A80SU LT-26A80ZU

SFT-1003A-U2

SFT-7201A-U2

SFT-8901A-U2

SFT-9002A-U2

LT-32A80SU LT-32A80ZU LT-32DA8SJ LT-32DT8ZJ LT-32DA8BJ

SFT-1004A-U2

SFT-7201A-U2

SFT-8901A-U2

SFT-9002A-U2

LT-26DA8BJ LT-26DA8SJ

SFT-1001A-U2

SFT-1002A-U2

LT-26DT8ZJ LT-26DA8SU LT-26DA8ZU

SEMICONDUCTOR SHAPES

TRANSISTOR

BOTTOM VIEW FRONT VIEW TOP VIEW

E C B

ECB

(G)E(S)C(D)

ECB

BOTTOM VIEW FRONT VIEW TOP VIEW

OUT

IN OUTE

1 N

CHIP TR

SFT-1008A-U2

LT-32DA8SU LT-32DA8ZU

SFT-1010A-U2

CHIP IC

2-2(No.YA509)

TOP VIEW

WIRING DIAGRAM

LCD PANEL UNIT [INVERTER PWB]

LCD PANEL UNIT [CONTROL PWB]

TOP

CN900W

CN900P

CN900A

CN900F

TOP

10 1

CN101A

CN100F

CN10LR

CN100R

31 1

CN00LV

[DA8/DT8 SERIES ONLY]

CN10UD

CN10UU

CN10UA

CN10UV

PL103

TOP

12 1 31 15

PL207 PL200 PL107

DIGITAL TUNER

DIGITAL TUNER UNIT

SW PWB

CN700R

F9001

250V/6.3A

CN90PW

POWER CORD

POWER PWB

CN100U

MAIN PWB

SPEAKER(L) SPEAKER(R)

LED PWB

ANALOG TUNER

TOP

CN80U1

2-4(No.YA509)(No.YA509)2-3

BLOCK DIAGRAM

[only LT-26DA8BJ/SU/ZU, LT-32DA8BJ/SU/ZU]

DIGITAL

TUNER

UNIT

D_Y D_BY D_RY

D_CV

D_L D_R

TXD RXD

EXT-4

EXT-5

EXT-1

EXT-2

HDMI 1

HDMI 2

TU1001

VHF/UHF TUNER

HDMI

RECEIVE

DIN_DL/DR

VTV OUT

LTV/RTV OUT

L1/R1

V2/Y2

C2/R2

L2/R2

V2 OUT

L2/R2 OUT

IC1003

SIF

TV_CV

DV1_R0-7

DV1_G0-7

DV1_B0-7

AUDIO SW

IC1005

[only LT-26DA8BJ/SU/ZU, LT-32DA8BJ/SU/ZU]

AUDIO SW

DIN/D_L DIN/D_R

L2/R2 OUT

L_OUT/R_OUT

SC_R1

SC_G1

SC_B1

E1_CV

E1_L/R

E2_CV/Y

SC_R2/C

SC_G2

SC_B2

E2_L/R

V2 OUT

TV_CV

D_CV

D_Y D_BY D_RY

SIF

DEMODULATE

Y/G

Pb/B

Pr/R

IC7001

MICROCOMPUTER/TELETEXT DECODE/ IF PROCESS/VIDEO PROCESS/AUDIO PROCESS/ AV SELECT/RGB PROCESS/A-D CONVERT/LVDS

RGB

MIX

SORROUND/

TONE/

VOLUME

TONE/

VOLUME

SCALE CONVERT/

DETAIL ENHANCEMENT/

NOISE REDUCTION

MIX

OSD COMPOSITION/

SCALE CONVERT

SOUND

A-D

CONVERT

COMPONENT

INTERFACE

3D COMB

FILTER

GRAPHIC ACCELERATE/

MEMORY BUFFER

DECODE

COLOUR DECODE

D-A CONVERT

LVD S

DRIVE

TXD RXD

M_L M_R

HP_L HP_R

LVDS_A0+/LVDS_A1+/LVDS_A2+/LVDS_A3+/LVDS_ACLK+/-

MAIN PWB

IC6001

AUDIO OUT

IC6011

HEADPHONE

AMP

L/R

HP_L/R

KEY

SPEAKER L

SPEAKER R

LCD PANEL

SW PWB

J7001

POWER/

CONTROL

SWITCH

S7101㨪S7104

HEADPHONE

EXT-3

[only LT-26DA8BJ/SU/ZU, LT-32DA8BJ/SU/ZU]

Y3/PB3/PR3

L3/R3

E3_Y/PB/PR

E3_L/R

MEMORY

V OUT

CPU

(No.YA509)2-5 2-6(No.YA509)

PERIPHERAL

INTERFACE

SDA0 SCL0

IC7003

MEMORY

POWER_LED

REMOCON

LED PWB

D8905

POWER

IC8952

IR RECEIVE

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