Insignia NS-LTDVD19 Service Manual

TV-8888-117

NS-LTDVD19

1. Features

2. Safety Precautions

3. Images of Module and Circuit Boards

4. Key IC Description& Trouble Shooting Guide

5.Signal Flowing Chart

6. Bus Control Adjustment

7. Circuit Diagram

Features

NO.

1 TFT SAMSUNG 2 Screen size 19inch

Functions

Model

NS-LTDVD19

3 Aspect ratio 16:310 4 Resolution 1440×900

5 Brightness 300cd/m 6 Contrast(Darkroom) 1000:1 7 Response time(ms) 5 8 Color system NTSC

9 NO. of preset channels 181 10 Picture mode Yes 11 Angel of view H:160 12 Color display 16,777,216

°

13 Color level 16

14 OSD languages ENGLISH \ FRENCH\ SPANISH

15 AV stereo Yes 16 Surrounding sound No 17 Audio system M 18 Bass Yes 19 Balance Yes 20 Sound mode Yes 21 Mute Yes 22 BTSC Yes 23 AV input Yes

24 AV output No

25 Y CB CR Yes 26 Y PB PR Yes

27 S-video jack Yes 28 TV in Yes

2

/ V:160

°

NO.

Model

Functions

NS-LTDVD19

29 D-SUB jack Ye s

30 DVI socket No

31 SCART socket No

32 Ear-Phone Out Yes

33 CCD,V-CHIP Yes

34 Semitransparent menu Yes

35 ZOOM No

36 16:9 mode Yes

37 Child Lock Yes

38 Quick View Yes

39 NO. of built-in speakers 2

40 Audio output power(Built-in)(W) 2*1.5

41 Total power input（W） 80

42 Voltage range（V） 120

43 Power frequency（Hz） 60

44 Time of sleep timer(MINS) 240

45 Approval UL

46 Suitable market U.S.A

Ｓａｆｅｔｙ　Ｐｒｅｃａｕｔｉｏｎｓ

High voltages are used in the operation of this product. Do not romove the cabinet back from your set. Refer servicing to qualified service personnel.

To prevent fire or electrical shock hazard, Do not expose the main unit to rain or moisture.

Do not drop or push objects into the television cabinet

Warning

20c

Minimum 10c

10c

5cm

slots or openings. Never spill any kind of liquid on the television receiver.

!

Caution

If the television is to be built into a compartment or similarly enclosed, the minimum distances must be maintained. Heat build-up can reduce the service life of your television, and can also be dangerous.

!

Caution

Never stand on, lean on, push suddenly the product or its stand. You should pay special attention to children to children.

!

Caution

Do not place the main unit on an unstable cart stand, shelf or table. Serious injury to an individual, and damage to the television, may result if it should fall.

!

When the product is not used for an extended period of time, it

Caution

is advisable to disconnect the AC power cord from the AC

outlet.

!

Avoid exposing the main unit to direct sunlight and other source of the heat. Do not stand the television receiver directly on other produces which give off heat. E. g. video cassette players,Audio amplifiers. Do not block the ventilation holes in the back cover. Ventilation is essential to prevent failure of electrical component. Do not squash power supply cord under the main unit.

!

Caution

The LCD panel used in this product is made of glass. Therefore, it can break when the prod uct is dropped or applied with impact. Be careful not to be injured by broken glass pieces in case the LCD panel breaks.

Images of Module and Circuit Boards

1.images of Remote Board Subassembly

2.images of Control Panel Subassem bly

3.images of Main Board

4.images of Power Supply

SupraHD-760-DTS-GEN-v1.0-Preliminary Release

Chapter 1. SupraHD-760 Overview

1.1 SupraHD Family

The ZR396xx family consists of:

• SupraHD-680 IC (ZR39680) - Digital TVs for the ATSC/DVB/OpenCable Market

• SupraHD-660 IC (ZR39660) - Digital TVs for the ATSC Market

• SupraHD-640 IC (ZR39640) - Digital ATSC upgrade for Analog TVs

The ZR397xx family consists of:

• SupraHD-760 IC (ZR39760) - Digital Flat Panel TVs for the ATSC Market

• SupraHD-740 IC (ZR39740) - Digital ATSC upgrade for Analog TVs

1.2 SupraHD-760 IC Description

The SupraHD-760 IC is a members of the SupraHD family of DTV controllers developed by Zoran. These devices are intended to be used in ATSC-compliant television implementations. These devices include all of the functionality required to support the television implementations shown in the following system block diagrams.

10/10/06 CONFIDENTIAL INFORMATION-DO NOT COPY 2

October 10, 2006 11:23 am

SupraHD-760-DTS-GEN-v1.0-Preliminary Release

Figure 2 shows a typical system implementation using the SupraHD-760. This system can be designed and

manufactured in a very low-cost manner.

1pc 16MBx16 256Mb

DDR Memory

Rear Chassis

Connections

C

V

B

S

C

Y

L

R

Video

A/D

ATSC/

NTSC Tuner

CVBS

Analog

Mux

Audio

A/D

IF

I2C0

CVBS/S-Video In

GPIOx

I2S0

HDMI HI2C HCEC

IEC958

Unconpressed Digit al HD I n*

IRR

CLKI N

MIF

ZR39760

LVDS Out

L Audio

R Audio

ACLK

LRCLK

ADATAO0

ADATAO1 ADATAO2

LCD/

PDP

Stereo

D/A

Audio

Amp

Virtual

Suround

As appropriate

for the design

Front

Panel

Figure 2: SupraHD-760 DTV System Diagram - FTA Implementation

3 CONFIDENTIAL INFORMATION-DO NOT COPY 10/10/06

UART0

October 10, 2006 11:23 am

CS0

FLASH

SupraHD-760-DTS-GEN-v1.0-Preliminary Release

TDO, TDI

TCK, TMS

TRST_N, TAPSEL

TSI_CLK, TSI_FRAME,

TSI_VALID, TSI _DATA

IF_AGC, AGC_SENSE, RF_AGC,

IFE_AI MP, I FE_VREFP, IFE_VREFN,

IFE_AINN, IFE_RBIAS, IFE_VCM, IFE_VINBIAS

TSO_CLK, TSO_FRAME,

TSO_VALID, TSO_DATA

HDMI_CEC, HDMI_HPD, HDMI _REXT,

HDMI_D0P, HDMI_D0N, HDMI_ D1P,

HDMI_ D1N, HDMI _D2P, HDMID2N,

HDMI_CLKP, HDMI_CLKN

VFE_CVBS, VFE_REFP, VFE_REFN,

VFE_VCM, VFE_I BEXT, VFE_BG

GDI R, GOE_n , GI OWR_n , GI ORD_n, GWE_n

PWM_OUT

SADATA, GPIOx, GPIO,

HDMI_SCL , HDMI_SDA,

VFE_YI N, VFE_CI N,

UART0_TX, UART0_RX

UART1_TX, UART1_RX

I2 C0C, I 2C0D

I2 C1C, I 2C1D

I2 C2C, I 2C2D

GPIO[3:0]

IRR

SPI_HOLD, SPI_WEN

GADR[4:0]

GDAT[7:0]

GCS_n[5:0]

GWS_ACK

GIRQ[3:0]

Embedded

Processi ng Unit

(EPC)

MI PS 4Kec

I Cache

D Cache

MMU

6

JTAG

4

3

7

4

13

HDMI

PHY

8

2

4

1

5SPI_CLK, SPI_SI , SPI_SO,

5

8

6

5

1

4

Ctl r .

EJTAG

Ctl r .

Counters /

Timer s

Transpor t

Processi ng Unit

(TRP)

Xport I /F

Xport Demux

AGC

Smart

Antenna

Demod

Video Captur e

Uni t

HDMI

NTSC/ PAL

Decoder

Flex Bus Unit

(FBU)

UART0

UART1

I2 C Ctlr . 1

I2 C Ctlr . 2

I2 C Ctlr . 3

GPI O

IRR

SPI

Modifi ed

Guest Bus

BVCI

16

SADR[13:0], SBS[1:0]_n

4

SDQM[3:0]

Memor y

Interface Unit

(MIF)

Audio

Processi ng Unit

(APU)

L/R Audio DACs

Di spl ay

Processor

(DPC)

Graphic s

Video I /F

LVDS Output

MPEG2 Decode

Uni t

(VDEC)

uControl ler

(MCU)

Sequencer

(MCE)

BLT

Link Li st

PVCI BUS (64b)

BVCI/AVCI BUS (64b)

MIF BUS (64b)

CLKGEN

DVCXO

PLL

Unique 128- bit

ID

3

SRAS_n, SCAS_n , SWE_n

3

SCLK, SCLK_ n, SCKE

4

SDQS[3:0],

16

SDATA[15 :0]

SVREF

ACLK BCLK, LRCLK

10

ADATAO[ 2:0 ] ADATAI [2 :0] IEC958

ADATAO[ 2:0 ]

4

ADATAI [2 ]

9

2

PIXOUT[23:0],PCLK, DEN, OSDP, AFHSI , AFVSI

LVDS_C_P, LVDS_C_N,

9

1

LVDS_D[7:0]_P, LVDS_D[7:0]_N LVDS_REXT

CLKI N,

2

CLKOUT

RESET_ n

Shared with the

I2S

signal s

ZR39760

Figure 3: SupraHD-760 Detailed Block Diagram

10/10/06 CONFIDENTIAL INFORMATION-DO NOT COPY 4

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SupraHD-760-DTS-GEN-v1.0-Preliminary Release

1.3 I/O Options

Figure 4 shows the four major I/O options available:

• video input and output

• audio input and output

Transport

Processing Unit

4

1

(TRP)

Xport I/F

Xport Dem ux

AGC

Audio

Processing Unit

(APU)

L/R Audio DACs

Display Processor

(DPC)

iii

I

4

ii

i

Smart

7

2

4

3

13 10HDMI

4

II

6

PHY

8

Video

FE

Antenna

Demod

Video Capture

Unit

HDMI

NTSC/PAL

Decoder

PVCI BUS (32b)

BVCI/AVCI BUS (64b)

MIF BU S (64b)

Video Input Options

1. ATSC MPEG2 Trans port Stream Input via Serial Transpor t Port

2. IF inter face from ATSC/Cable QAM compatible Tuner

1

3. Serial Transport output from the integrated Demodulator

4. Uncompressed Di gital Video (YUV or RGB Format ) via HDMI Por t

5. Uncompressed Di gital Video (YUV or RGB Format ) via 24-bi t UDI Port

6. NTSC CVBS Analog Video via NTSC /PAL Decoder Port

Video Output Options

A. Uncompressed Digital Video (YUV or RGB Format) via LVDS Output

A

B. Uncompressed Digital Video (YUV or RGB Format) via Uncompressed Digital Video Port

Audio Input Options

I. Up to Six (6) channel I2S Input via thr ee (3) I2S Por ts

I

II. Two (2) channel PCM Audio Input via the HDMI Port

Graphics

Video I/F

LVDS Output

2

9

8

B

5

A

Audio Output Options

i. Up to Six (6) channel I2S Output via thr ee (3) I2S Port s

i

ii. Two (2) channel Analog Output vi a DAC Output

iii. IEC958 (S/PDIF) Output

Figure 4: I/O Option Dataflows

5 CONFIDENTIAL INFORMATION-DO NOT COPY 10/10/06

October 10, 2006 11:23 am