Sanyo LCD-32XA2 Manuale utente

SERVICE MANUAL LCD Television

N2YW

FILE NO.

Model No. LCD-32XA2

(Middle East / Indonesia)

Give complete “SERVICE REF. NO.” for parts

order or servicing.It is shown on the rating label

at the cabinet back of the unit.

This T.V. receiver will not work properly in

foreign countries where the television

transmission system and power source

differ from the design specifications. Refer

to the specification table.

Product Code:111376317

REFERENCE NO. SM3010099

Original Version

Chassis Series: UE2-A

Service Ref. No. LCD-32XA2-00

Contents

Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chassis Block Diagrams . . . . . . . . . . . . . . . . . . . . . . 4-5

CPU Port Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Sub CPU Port Functions . . . . . . . . . . . . . . . . . . . . . . . 7

Option Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

On-screen Service Menu System . . . . . . . . . . . . . . . . 9

Initialisation of memory IC . . . . . . . . . . . . . . . . . . . . . 10

Protection Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . 11

Mechanical Disassembly . . . . . . . . . . . . . . . . . . . 12-15

Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 16-17

Chassis Electrical Parts List . . . . . . . . . . . . . . . . . 18-33

Printed Wiring Board . . . . . . . . . . . . . . . . . . . . . . 34-40

377

245

506

545

922

711

401

233

115

153

Safety Notice

-2-

Safety Precautions

The following precautions must be observed.

1: Comply with all caution and safety-related notes provided on the cabinet back, cabinet bottom, inside the

cabinet or on the chassis.

2: When replacing a chassis in the cabinet, always be certain that all the protective devices are installed

properly, such as, control knobs, adjustment covers or shields, barriers, etc..

DO NOT OPERATE THIS TELEVISION WITHOUT THE PROTECTIVE SHIELD IN POSITION AND PROPERLY

SECURED.

3: Before replacing the cabinet cover, thoroughly inspect the inside of the cabinet to see that no stray parts or

tools have been left inside.

Before returning any television to the customer, the service personnel must be sure that it is completely safe to

operate without danger of electrical shock.

Product Safety Notice

Product safety should be considered when a component replacement is made in any area of a receiver.

Components indicated by mark in the parts list and the schematic diagram designate components in which

safety can be of special significance. It is particularly recommended that only parts designated on the parts list

in this manual be used for component replacement designated by mark . No deviations from resistance

wattage or voltage ratings may be made for replacement items designated by mark .

[ Details of Dimensions ]

(Unit : mm)

Specifications

-3-

Power Source AC100-264 Volts, 50/60Hz

Colour System PAL/SECAM/NTSC4.43/NTSC3.58/PAL-60Hz

Sound System B/G, D/K K’, I, M/M

Channel Coverage VHF: E2-E12,A2-A13,R1-R12,J1-J12,K1-K9

UHF: 21-69,A14-A69,J13-J62

CATV: S1

S41, X, Y, Z, Z+1, Z+2

Aerial Input Impedance 75 Ω

LCD Panel

Screen Size (Measured Diagonally):32 inches

Picture Resolution: WXGA 1366 (Horiz.) x 768 (Vert.) pixels

Viewing Angles: Horiz. 176˚, Vert. 176˚

Contrast Ratio: 1000:1

Brightness: 550 cd/m2

Audio Output (RMS) 10W+10W

Speakers 6 cm x 12 cm x 2 pcs.

AV Terminals

AV1 Video:Composite video Input (RCA Jack) x 1

Audio:L/R Stereo Input (RCA Jack) x 1 set

AV2 CENELEC Standard (Scart Terminal)

Input: Composite video, RGB, S-video and audio-L/R

Output: Monitor-output with composite video and audio-L/R

AV3 Video:Composite video Input (RCA Jack) x 1

Audio:L/R Stereo Input (RCA Jack) x 1 set

AV4 Video:Composite video Input (RCA Jack) x 1

Audio:L/R Stereo Input (RCA Jack) x 1 set

AV5 Video:Component Y, CB,CRInput (RCA Jack) x 1 set

Audio:L/R Stereo Input (RCA Jack) x 1 set

Audio Monitor Output: L/R Stereo Output (RCA Jack) x 1 set

Headphone Jack: Mini Stereo Jack x 1

Weight 17.5 kg (Included Swivel Stand)

Dimensions:922 (W) X 545 (H) X 233 (D) mm (Included Tilt Stand)

Specifications subject to change without notice.

-4-

Chassis Block Diagrams (Video Signal Lines)

A101

TUNER SAW

FILTER

X121 LCD PANEL

(WXGA)

KLP1 (27")

KLP2 (32")

AV2 SCART (K1002)

R/S-VIDEO C IN

G IN

B IN

COMPISITE VIDEO/Y IN

VIDEO MONITOR OUT

S-VIDEO-C IN

D3901

LED

A3901

RC RECEIVER

RC-IN

ASSY,PWB, CONTROL

ASSY, PWB, SIGNAL IC101

(TDA9886)

IF-PLL

DEMODULATOR

VIF1

VIF2

IC805

FLASH

MEMORY

IC802

MEMORY

SCL

SDA

COMPISITE VIDEO IN

COMPONENT CRIN

COMPONENT CBIN

COMPONENTY IN

AV1TERMINAL (K1001)

AV5TERMINAL (K1006)

CBIN (AV5)

COMPISITE VIDEO IN

AV3TERMINAL (K1003)

COMPISITE VIDEO IN

AV4TERMINAL (K1004)

AV1 VIDEO IN

IC1224

VIDEO SW

AV2 VIDEO IN SELECTED

VIDEO OUT

IC1251

RGB SW

G/Y IN (AV2)

AV3 VIDEO IN

AV4 VIDEO IN 3

R IN (AV2)

CRIN (AV5)

G IN

B IN (AV2)

6B/CB

3R/CR

K8D

ASSY, PWB, SCAL

IC2001

(STV2310)

CVBS IN

C IN

G IN

B/CB IN

R/CR IN

2Y INAnalog

Input Stage

RGB Insertion

Input

SRC

Luma

Chroma

Separator

Standard Identifier

& Chroma Demodulator

PAL/NTSC/SECAM

Soft Mixer

Format Converter

& Output Scaler

Video Corection

Output FIFO

Line-locked Output Pixel Clock

Synchronization

& Monitoring Unit

VBI Slicer

I2C Interface

System Clock

generation DIGITAL

Y, CB, CR

OUTPUT

Pin-19~28

IC801

(STV3600)

MAIN CPU/TELETEXT DECODER 117~124

IC803

SDRAM

IC804

SDRAM

IC1801

SUB CPU

IC4001

(ADE3800)

ANALOG LCD

DISPLAY ENGINE

(SCALER/LVDS)

POWER

KEY IN KEY IN

SW3951~

SW3955

K19J

K8J

145 132

146

153/154/155

ANALOG PB/B, PR/R,Y/G

OUTPUT

DIGITALVIDEO DECODER

33/34/38/39/43/44

27":90~99

32":77~86

-5-

Chassis Block Diagrams (Audio Signal Lines)

A101

TUNER SAW

FILTER

X122

AV2 SCART (K1002)

ASSY, PWB, SIGNAL

IC101

(TDA9886)

IF-PLL

DEMODULATOR

SIF1

SIF2 8TV AUDIO OUT

AUDIO L-IN

AV1TERMINAL (K1001)

AV5TERMINAL (K1007)

AV3TERMINAL (K1003)

AV4TERMINAL (K1004)

IC3451

(STV8216)

AUDIO PROCESSOR &

DIGITAL SOUND DEMODULATOR

(NICAM/A2 STEREO/3D SURROUND)

IC1222

AUDIO SW

L-OUT

IC3501

(NJM2155)

BBE/BASS EXPANDER

SP902

K001

HEADPHONE JACK

R-OUT

AUDIO R-IN

AUDIO L-IN

AUDIO R-IN

AUDIO L-IN

AUDIO R-IN

AUDIO L-IN

AUDIO R-IN

AUDIO L-IN

AUDIO R-IN

13 R-OUT

AV3 L-IN

AV4 L-IN

AV5 L-IN

AV3 R-IN

AV4 R-IN

AV5 R-IN

AUDIO MONITOR OUT

(K1005)

AUDIO MONITOR OUT-L

AUDIO MONITOR OUT-R

AUDIO MONITOR OUT-L

AUDIO MONITOR OUT-R

L-IN R-IN

IC001

(LA4919N)

AUDIO AMP.

AUDIO R-OUT

AUDIO L-OUT 6

AUDIO R-OUT

AUDIO L-OUT 15/16

24/25

SP901

L-OUT KSPL

KSPR

HEADPHONE L-OUT

HEADPHONE R-OUT

27 28

L-OUT

R-OUT

Main CPU Port Functions (IC801)

-6-

Pin No. Port Name Function

131 A0 N_Reset Output

133 A1 Power error-1 input (AD Input)

10 A2 PLL Lock (Not used)

11 A3 LCD Brightness Output (Active=H)

135 A4

136

137 A6

138 A7 FAN Control Check (For manufacturing process)

146 B0 Power ON/OFF Switch Input

145 B1 Key Board Input (AD Input)

144 B2 8-pin of Scart-1 Input (AD Input)

143 B3 8-pin of Scart-2 Input (AD Input)

142 B4 8-pin of Scart-3 Input (AD Input)

141 B5 AGC Input

130 C0 SDA for ADE3800

129 C1 SCL for ADE3800

128 C2 AV Switch-C Output

127 C3 Power-3 Output

4C4SDA for EEPROM (IC802)

3C5SCL for EEPROM (IC802)

2C6SDA for device other than EEPROM

1C7SCL for device other than EEPROM

5D0AV Switch-A Output

6D1 LCD ON (Back-Light ON/OFF) Output

7D2 50/60Hz Switch (Switching PAL/NTSC) Output

8D3AV Switch-B Output

132 D4 RC Input (Active=L)

147 D5 Power Switch-1 output

9D6Power error-2 Input

134 D7 Power Info. Input

Sub CPU Port Functions (IC1801)

-7-

Pin No. Function Name Function

1SCL I2C Bus Clock (For Tuner, IC101, IC3451 of Signal Unit)

2P3_7 TV_VGA (Not used)

3Reset Reset Input (L=Reset)

4Xout X’tal Osc. Output (10MHz)

5Vss Vss (GND)

Xin

X’tal Osc. Input (10MHz)

7Vcc Vcc=3.3V

8Mode Mode / Connected to Vcc

9P4_5

10 P1_7 A Detection Input -Not used-

11 P1_6 DM Clock Output (Not used)

12 P1_5 DM Data (Not used)

13 P1_4 DM IR Send (Not used)

14 P1_3 RGB ON/OFF Output (Not used)

15 P1_2 Power4 Output

16 Vref Reference for ADC (Vcc)

17 P1_1 Timer Recording Output (H=Recording) (Not used)

18 P1_0 D/A Control Output (H=Digital)

19 P3_3

20 SDA I2C Bus Data (For Tuner, IC101, IC3451 of Signal Unit)

-8-

Option Setting

After replacing Memory IC (IC801)

The memory IC (IC802), stores the option data of TV set and service adjustments data for each circuit, therefore, when

the memory IC is replaced, it should be programmed to the following settings and “ Service Adjustment” on page 11.

1) How to enter the Option Setting Mode

Press and hold the OK button on the remote control and press the Programme Down (▼)button on the front

control panel of the TV. The option window will appear on the screen.

[ Option Setting Menu ]

2) How to make the Option Setting

Select desired option item by pressing the Programme Up or Down button.

To switch the option mode, use the Volume + or

button.

The data which is set in the option mode is stored into the memory IC automatically.

The following table shows the available option items and default setting mode.

Option Items Mode Default / Description

ON Timer ON or OFF Default “OFF” / Disable or enable ON Timer function.

Plug & Play ON or OFF Default “ON” / Disable or enable Plug & Play function.

Welcome Text ON or OFF Default “ON” / Display message when first set up.

BBE ON or OFF Default “ON” / Disable or enable BBE function on Sound menu.

Auto Volume ON or OFF Default “ON” / Disable or enable “Auto Volume Level” function

on Sound menu.

Headphone ON or OFF Default “OFF” / Disable or enable Headphone control on Setting

menu.

16:9 Mode ON or OFF Default “ON” / 16:9 mode.

Noise Reduction ON or OFF Default “ON” / Disable or enable Noise Reduction function on

Setting menu.

Country UK. UK&IRE or EU Default “EU” / Selection of TV system.

Raster Rotation ON or OFF Default “OFF” / Disable or enable Raster Rotation function.

SESA ON or OFF Default “OFF”.

Digital RC ON or OFF Default “OFF” / Disable or enable use of Digital RC hand-set.

Light Monitoring ON or OFF Default “OFF” / Disable or enable Light Monitoring function.

Video Mute ON or OFF Default “OFF” / Disable or enable Video Mute function.

3) Exit from the Option Mode

Press the MENU button or turn off the TV set by pressing the Power ON/OFF button.

ON Timer OFF

Plug & Play ON

Welcome Text ON

BBE ON

Auto Volume ON

Headphone OFF

16:9Mode ON

Noise Reduction ON

Country EU

Raster Rotation OFF

SESA OFF

DIGITAL RC OFF

Light Monitoring OFF

Video Mute OFF

-9-

On-screen Service Menu System

General

This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the

service adjustments.

On-screen Service Menu System

1) How to enter the Service Menu

Press and hold the Green button of the remote control and press the Programme Down (▼)button on the front

control panel of the TV, and the Main menu of service mode will be displayed.

3) Exit from the Service Menu

Press the MENU button repeatedly or turn off the TV set by pressing the Power ON/OFF button.

2) How to select the service section and service item and change data value:

To select Service Section: Press the Cursor or button on the remote control hand set, and press the

OK button to enter the Sub menu.

To change data value: Select service item by pressing the Cursor or ,and change data value by pressing

the Cursor or button.

[ Main Menu of the Service Mode ]

Software Version

Information

Service Section

Service

UE2 32 Ver 5.06

Sound

Video

Other

STV8216

TTDDAA99888866

STV2310

ADE3800

WSS

EEPROM Reset

TDA9886 FE

Write 1 70

[Sub Menu]

Data Value

Item No.

Example;

Important Notice: Do not attempt to adjust service adjustments not listed on page 11, otherwise it may cause

loss of performance and for correct operation.

-10-

Initialisation of Memory IC (IC802)

Protection Circuit

How to Initialise the Memory IC

To initialise the memory IC (IC802), press and hold the Picture Mode button on the remote control, then press the

Programme Down button on the front panel of the TV set and then turn the Mains switch off and on.The initialisation

is now completed.

When initialised the memory IC and all of the setting data (option data and service adjustment data) stored in the IC

are reset to the default value. It is necessary to set the option settings and readjust the service adjustments listed on

page 11 and to re-tune all the channels.

This TV set has a built-in power supply protection circuit.

It is provided to protect the TV set in case of a power supply circuit malfunctions.When something abnormality occurs

during TV reception, the TV set goes to the stand-by mode.

When operating the Protection Circuit, the Stand-by and Power Indicator will blink.

Releasing the protective circuit and restoring power supply

To release the protective circuit and restore power supply, disconnect the AC cord for a short time.This will work only

if the power supply trouble was temporary. If there is permanent trouble such as a damaged circuit, power cannot be

restored and the circuit will have to be repaired.

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