Sanyo LCD-27XL2B, LCD-27XL2 Service Manual

SERVICE MANUAL LCD Television

N2WV/N2WVN/N2WVB

FILE NO.

Model No. LCD-27XL2

LCD-27XL2B

(Argentina / Brazil)

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.

Contents

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

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

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

IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Sub CPU Port Functions . . . . . . . . . . . . . . . . . . . . . . . 8

CPU Port Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Option Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

On-screen Service Menu System . . . . . . . . . . . . . . . 11

Initialisation of Memory IC . . . . . . . . . . . . . . . . . . . . . 12

Protection Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . 13-14

Mechanical Disassembly . . . . . . . . . . . . . . . . . . . 15-18

Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 19-20

Chassis Electrical Parts List . . . . . . . . . . . . . . . . 21-36

Printed Wiring Board . . . . . . . . . . . . . . . . . . . . . . 37-43

Service Ref. No. LCD-27XL2-00

LCD-27XL2B-00 LCD-27XL2B-01

NOTE

Difference between Model LCD-27XL2 and LCD-27XL2B:

1) Destination LCD-27XL2... Argentina LCD-27XL2B...Brazil

2) Power Cord.

3) Instruction Manual.

Difference between Service Ref. No. LCD-27XL2B-00 and LCD-27XL2B-01:

1) Country of origin

LCD-27XL2B-00... Made in Argentina LCD-27XL2B-01... Made in Brazil

Product Code:111376216 (LCD-27XL2-00)

111376234 (LCD-27XL2B-00)

111376233 (LCD-27XL2B-01) Original Ver sion Chassis Series: UE2-B

210

436

476

800

599

338

377

233

109

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 par ts designated on the par ts 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 AC100-240 Volts, 50/60Hz Receiving System PAL-N/N/, PAL-M/M, NTSC-M/M

Channel Coverage ANTENNA mode

VHF: CH02 - CH13 UHF: CH14 - CH69

CATV mode

VHF band: CH01-CH13 MID band: CH14-CH22 SUPER band: CH23-CH36 HYPER band: CH37-CH64 ULTRA band: CH65-CH94 and CH100-CH125 Low MID band: CH95-CH99

Aerial Input Impedance 75 Ω

LCD Panel

Screen Size (Measured Diagonally): 27 inches Picture Resolution: WXGA 1280 (Horiz.) x 720 (Vert.) pixels Viewing Angles: Horiz. 176˚, Vert. 176˚ Contrast Ratio: 900:1 Brightness: 550 cd/m

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 (Scar t 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,CR Input (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 Dimensions: 800 (W) X 476 (H) X 233 (D) mm (Included Tilt Stand) Weight 14.1 kg (Included Swivel Stand)

Specifications subject to change without notice.

-4-

Chassis Block Diagrams (Video Signal Lines)

LED

D3901

117~124

IC805

IC803

SDRAM

FLASH

MEMORY

(WXGA)

LCD PANEL

A3901

RC RECEIVER

ASSY,PWB, CONTROL

SW3951~

SW3955

K19J

K8J

RC-IN

KEY IN

POWER

KEY IN

132

145

146

PAL/NTSC/SECAM

Standard Identifier

& Chroma Demodulator

DIGITAL

Y, CB, CR

OUTPUT

Pin-19~28

Soft Mixer

Video Corection

& Output Scaler

Format Converter

Output FIFO

Line-locked Output Pixel Clock

KLP1 (27")

KLP2 (32")

ASSY, PWB, SCAL

IC101

IF-PLL

(TDA9886)

DEMODULATOR

IC4001

VIF1

VIF2

32":77~86 27":90~99

(ADE3800)

(SCALER/LVDS)

ANALOG LCD

DISPLAY ENGINE

OUTPUT

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

33/34/38/39/43/44

VIDEO OUT

SELECTED

IC1224

VIDEO SW

IC801

153/154/155

IC804

SDRAM

(STV3600)

MAIN CPU/CAPTION DECODER

IC1801

SUB CPU

SCL

IC802

MEMORY

SDA

R/C

S-VIDEO-C IN

G IN

DIGITAL VIDEO DECODER

IC2001

(STV2310)

K8D

B/CB 6

Luma

Input

CVBS IN

Chroma

Separator

SRC

C IN

IC1251

Analog

Y IN

RGB SW

RGB Insertion

Input Stage

R/CR IN

G IN

Synchronization

B IN

B/C

& Monitoring Unit

VBI Slicer

C Interface

generation

System Clock

X121

ASSY, PWB, SIGNAL

SAW

A101

FILTER

TUNER

AV1 VIDEO IN

COMPISITE VIDEO IN

AV1 TERMINAL (K1001)

AV2 VIDEO IN

COMPISITE VIDEO/Y IN

AV2 SCART (K1002)

B IN (AV2)

CB IN (AV5)

COMPISITE VIDEO IN

AV3 TERMINAL (K1003)

COMPISITE VIDEO IN

AV4 TERMINAL (K1004)

COMPONENT CR IN

AV5 TERMINAL (K1006)

B IN

COMPONENT Y IN

COMPONENT C

R IN (AV2)

R/S-VIDEO C IN

G IN

CR IN (AV5)

G/Y IN (AV2)

B IN

AV4 VIDEO IN

AV3 VIDEO IN

VIDEO MONITOR OUT

-5-

Chassis Block Diagrams (Audio Signal Lines)

IC001

(LA4919N)

AUDIO AMP.

IC3501

(NJM2155)

BBE/BASS EXPANDER

SP901

KSPL

L-OUT

15/16

AUDIO L-OUT

L-OUT

AUDIO

SP902

KSPR

AUDIO R-OUT

R-OUT

AUDIO

R-OUT

24/25

K001

HEADPHONE JACK

L-OUT

HEADPHONE L-OUT

R-OUT

HEADPHONE R-OUT

KIF

K36IF

IC3601

(CXA2104S)

AUDIO-IN

MTS

ASSY, PWB,

MTS / SAP

ASSY, PWB, SIGNAL

IC101

IF-PLL

(TDA9886)

DEMODULATOR

X122

SIF1

SAW

A101

TV AUDIO OUT

SIF2

FILTER

TUNER

TV OUT-L

TV OUT-R

K36P3

L-OUT

AV4 L-IN

KP3

AV5 L-IN

TV -L 4

TV -R 11

R-OUT

AV3 R-IN

AV4 R-IN

AV5 R-IN

R-IN

IC3451

(STV8216)

3D SURROUND

AUDIO PROCESSOR/

STEREO SOUND DEMODULATOR/

L-IN

IC1222

AUDIO SW

AV3 L-IN

AUDIO MONITOR OUT-L

AUDIO MONITOR OUT-R

AUDIO L-IN

AV1 TERMINAL (K1001)

AUDIO R-IN

AUDIO L-IN

AV2 SCART (K1002)

AUDIO R-IN

AUDIO MONITOR OUT-L

(K1005)

AUDIO MONITOR OUT-R

AUDIO MONITOR OUT

AUDIO L-IN

AV3 TERMINAL (K1003)

AUDIO R-IN

AV4 TERMINAL (K1004)

AUDIO L-IN

AUDIO R-IN

AV5 TERMINAL (K1007)

AUDIO R-IN

AUDIO L-IN

-6-

IC001 < AUDIO AMP. > LA4919N-E

IC Block Diagrams

3 4

7 8

12 13 14

HP IN1

Headphone Block

Ripple filter

Voltage Regulator

Vcc

VG=6dB

H/P Standby SW

AMP. Standby

Output

amplifier

Output

amplifier

Nonlinear

amplifier

Muting circuit used at power on

Intput

amplifier

H. L. S

Switching regulator Block

Switching

Drive

ABC

*H. L. S

Higher Level

Signal Selector

Headphone stage Input amplifier stage Switching regulator stage

Power TR stage

VCC

Output

amplifier

Output

amplifier

Nonlinear

amplifier

OUT1+

OUT1

Output amplifier stage

REF amplifier

Input amplifier

HP IN2

HP OUT2

HP OUT1

HP D.C

HP Standby

AMP Standby

D.C

DDL

ON TIME

IN2

PRE GND

PRE VCC

IN-VREF

IN1

POWER GND

SW GND

SWB

SWE

SW OUT

OUT2

IC101 < IF-PLL Demodulator > TDA9886TSV4P

VIF2

TUNER AGC

VIF-AGC

SIF AGC

OUTPUT

PORTS

I2C-BUS TRANSCEIVER

SINGLE REFERENCE QSS MIXER

INTERCARRIER MIXER

AND AM DEMODULATOR

VIF-PLL

RC VCO

DIGIT AL VCO CONTROL

AFC DETEVTOR

SOUND TRAPS

4.5 to 6.5MHz

AUDIO PROCESSING

AND SWITCHES

NARROW-BAND

FM-PLL DEMODULATOR

SUPPLY

MAD

VIF1

SIF2

SIF1

AGND

N.C.

OP1

OP2

SCL

SDA

DGND

SIOMAD

Sound intercarrier output

and MAD select

FM-PLL

FM-PLL filter

AGC

de-emphasis network

DEEM

AUD

Audio output

CVBS

Video output: 2Vp-p (1.1vp-p without trap)

VPLL

REF

AFC

External reference signal

or 4MHz crystal

VIF-PLL filter

VAGC

(pos)

TOP

TAGC

AGC(neg)

IC3501 < BBE/Bass Sound Processer >

NJM2155M

3 4

7 8

LOWOUT-L

OUT-L

Vcc

IN-L

FILTER

MACH3

HOUT-L

LOWIN-L

IN-R

HIN-R

HOUT-R

HIL-L

BBE

Mach3

Bias

Control

LOWIN-R

LOWOUT-R

OUT-R

VREF

GIN

GOUT

LPIN

LPOUT

GND

BBE

PROCESS

LO CONTOUR

IC Block Diagrams

-7-

IC3601 < MTS Decoder > CXA2104S

MAIN IN

MAIN OUT

SAP IN

ST IN

SUB OUT

PCINT1

COMP IN

Vcc

PLINT

PCINT2

NOISETC

SAPTC

SAP OUT

IREF

VGR

DGND

SCL

SDA

LPF

MATRIX

VCA

RMSDET

SPECTRAL

HPF

LPF

DeEm

AMP

(+4dB)

LOGIC

NRSW/FOMO/SAPC

IREF

C BUS I/F

LPF

BPF

SAPVCO

SAPIND

NOISE

DET

"PONRES"

"SAP"

"NOISE"

VCA

WIDE BAND

1/2

LPF

STIND

DeEm

VCA

VCO

1/4

LFLT

STLPF

FLT

ATT/INSW

(+6dB)

"STEREO"

VEWGT

VETC

VEOUT

VCAIN

VCAWGT

VCATC

TVOUT-L TVOUT-R

SOUT

GND

IC3451 < Audio processor > STV8216

18 19

MONO IN

SIF

Sound IF

AL1L AL1R

AL2L

AL2R

AL3L

AL3R

Input Scarts

0.5V rms

2V rms

Audio

Stereo

A/D

Input Analog Audio Matrix

AGC

A/D

Multi-Standard

Digital Stereo

Demodulator

FM, AM, A2

& NICAM

Demodulation

IRQ

Interrupt

Request

Stereo

Flag

Source preprocessing

Stereo

Flag

Digital Audio Matrix

I2S Interface

I2C Interface

SDO

SDA

SCL

BUS0

(BBE)

BUS1

(MACH-3)

HPD

Headphone

Detection

Audio Processing

Loudspeaker Audio Processing

Smart Volume Control, ST Wide

Surround, 5-band Equalizer &

Loudness, Beeper & Subwoofer Out

Headphone Audio Processing

Smart Volume Control,

Bass/Treble & Beeper

Audio Matrixing

Signal Crystal

Clock generation

Power Supply Management

DC Regulators, Standby mode

XTI

XTO

LSL LSR SW

HPR

AO1L AO1R

Audio

Stereo

D/A

Audio Stereo

D/A

Audio

Stereo

D/A

Vol.

Bal

Gain

Vol. Bal

Output Analog

Audio matrix

Low Noise

Audio Mute

Low Noise

Audio

Mute

Low Noise

Audio

Mute

Low Noise

Audio

Mute

1V rms

2V rms

Loudspeaker

AO2L AO2R

HPL

1V rms

I2C Bus Expander

Headphone

Output Scarts

Sub woofer

-8-

IC Block Diagrams

Pin No. Function Name Function

1 SCL I2C Bus Clock (For Tuner, IC101, IC3451 of Signal Unit) 2 P3_7 TV_VGA (Not used) 3 Reset Reset Input (L=Reset) 4 Xout X’tal Osc. Output (10MHz) 5 Vss Vss (GND) 6

Xin

X’tal Osc. Input (10MHz) 7 Vcc Vcc=3.3V 8 Mode Mode / Connected to Vcc 9 P4_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 I

C Bus Data (For Tuner, IC101, IC3451 of Signal Unit)

Sub CPU Port Functions (IC1801)

IC4001 < Analog LCD Display Engine > ADE3800

Analog H&V Syncs

GLBL

GLobal Control

MCU (SCL, SDA)

I2C

PWM

Pulse Width

Modulation

SMEAS

Sync

Measure

SRT

Sync

Retiming

XCLK

Domain

Analog R,G,B Data

INCLK

Domain

SCLK

Domain

DCLK

Domain

Out Data Syncs & Clock (To LCD Panel)

TCON

LLK

Line Lock

PLL

ADC

(Digital)

ADC

(Analog)

SMUX

Sync

Multiplexer

DMEAS

Data

Measure

SCL

Scaler

SCLK

PLL

DCLK

PLL, FM

FLK

Flicker

Detection

TCON

Timing

Controller

PGEN

Pattern

Generator

sRGB

GAM

Gamma

OSD

On-Scree

Display

APC

OMUX Output multiplexer

LVDS_RSDS

-9-

Main CPU Port Functions (IC801)

Pin No. Port Name Function

131 A0 N_Reset Output (Active=H) 133 A1 Power error-1 input

10 A2 PLL Lock

11 A3 LCD Brightness Output 135 A4 LED / For software flash 136

Audio Mute / For software flash 137 A6 Control of Inverter (Active=L) 138 A7 For writing / FAN Control Check (For manufacturing process) (Active=L) 146 B0 Power ON/OFF Switch Input (AD Input) 145 B1 Key Board Input (AD Input) 144 B2 8-pin of Scart-1 Input (AD Input) -Not used143 B3 8-pin of Scart-2 Input (AD Input) 142 B4 8-pin of Scart-3 Input (AD Input) -Not used141 B5 AGC Input

130 C0 SDA for ADE3800 (IC4001) 129 C1 SCL for ADE3800 (IC4001) 128 C2 AV Switch-C Output 127 C3 Power-3 Output

4C4SDA for EEPROM (IC802) 3C5 SCL for EEPROM (IC802) 2C6SDA for device other than EEPROM 1C7 SCL 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 (Active=H) 132 D4 RC Input (Active=L) 147 D5 Power Switch-1 output

9D6Power error-2 Input 134 D7 Power Info. Input (Input of the power supply condition)

Option Setting

-10-

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 13-

14.

1) How to enter the Option Setting Mode

Press and hold the MUTE button on the remote control and press the CHANNEL DOWN (P▼)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 CHANNEL 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. Bass Expander ON or OFF Default “ON” / Disable or enable Bass Expander on Sound 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 T ext ON

BBE ON

Auto Volume ON

Bass Expander ON

16:9Mode ON

Noise Reduction ON

Country EU

Raster Rotation OFF

SESA OFF

Digital RC OFF

Light Monitoring OFF

Video Mute OFF

On-screen Service Menu System

-11-

General

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

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

VOLUME + button to enter the Sub menu.

To change data value: Select ser vice item by pressing the Cursor or

and change data value by pressing

the VOLUME + or

button.

(To retur n to the Main menu, press the MENU button.)

On-screen Service Menu System

1) How to enter the Service Menu

Press and hold the SOUND button of the remote control and press the CHANNEL DOWN (P▼)button on the front control panel of the TV, and the Main menu of service mode will be displayed.

[ Main Menu of the Service Mode ]

Software Version Information

Service Section

Service

ue2b27v7.04s128

Sound Video

OOtthheerr

STV8206 TDA9885 STV2310 ADE3800 WSS CXA2104

56 White BalG 32

[Sub Menu]

Data V alue

Item No.

Example;

Important Notice: Do not attempt to adjust service adjustments not listed on page 13-14, otherwise it may

cause loss of performance and for correct operation.

Item

Initialisation of Memory IC (IC802)

-12-

Protection Circuit

How to Initialise the Memory IC

To initialise the Memory IC (IC802), press and hold the IMAGE button on the remote control, then press the CHANNEL 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 ser vice adjustments listed on page 13-14 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 per manent trouble such as a damaged circuit, power cannot be restored and the circuit will have to be repaired.

-13-

Service Adjustments

Important Notice:

Do not attempt to adjust service adjustments not listed below otherwise it may cause loss of performance and for correct operation.

AGC Adjustment

1. Receive PAL-N colour bar pattern.

(ANT Input Level:62dBµV 75 ohms terminated)

2. Connect a Digital Volt Meter to Tuner-AGC terminal (TP-A) and the ground.

3. Enter the Ser vice Mode, and select item TDA9885 with ▲ or ▼ key.

4. Select item Write 1 of TDA9885 with ▲ or ▼ key.

5. Adjust voltage of Tuner-AGC to become 3.2V±0.3V DC with VOLUME + or -key .

White Balance Adjustment

[ Setting ]

1. Connect a color-bar generator to the external

(composite) video input terminal (AV1 or AV3), and input a White Pattern (90%).

2. Set the television to following conditions: Picture Mode: Dynamic Pre-heating Time:More than 10 minutes

[ White Balance Adjustment ]

1. Enter the Ser vice Mode, and select item “Other”

with ▲ or ▼ key, then press the VOLUME + or - key to enter the Sub menu.

Adjustment Item:

No. 55 White Balance R No. 56 White Balance G No. 57 White Balance B

2. Set

55 White BalR, 56 White BalG

and

57 White BalB

value to “32”with VOLUME + or - key .

TDA9885 FE

Write 1 10

Data V alue

Item No.

Black Balance Adjustment

[ Setting ]

1. Connect a color-bar generator to the external

(composite) video input terminal (AV1 or AV3 ter minal), and input a dark gray pattern (10% white).

2. Set the television to following conditions: Picture Mode: Dynamic Pre-heating Time:More than 10 minutes

[ Black Balance Adjustment ]

1. Enter the Ser vice Mode, and select item “Other”

with ▲ or ▼ key, then press the VOLUME + or - key to enter the Sub menu.

Adjustment Item:

No. 58 Black Balance R No. 59 Black Balance G No. 60 Black Balance B

2. Set 58 Black BalR, 59 Black BalG and 60 Black BalB value to “255” with VOLUME + or - key .

3. Decide one item in three items to a fixed value

(Example, let 58 Black BalR be fixed value), select item of other 2 colors (Example, 59 Black BalG or 60 Black BalB) with ▲ or ▼ key, and adjust to produce a normal black and white picture in dark gray areas with VOLUME + or -key . (Note: At this time, Adjust the other 2 colors data less than fixed data.)

After adjustment, confirm white balance again by normal picture.

58 Black BalR 255

Data V alue

Item No.

Item

55 White BalR 32

Data V alue

Item No.

Item

3. Decide one item in three items to a fixed value (Example, let 55 White BalR be fixed value), select item of other 2 colors (Example, 56 White BalG or 57 White BalB) with ▲ or ▼ key, and adjust to produce a normal black and white picture in highlight areas with VOLUME + or - key . (Note: At this time, Adjust the other 2 colors data less than fixed data.)

After adjustment, confirm white balance again by normal picture.

Service Adjustments

-14-

Minimum leakage

Pin-1 of K36P3(R)

300Hz

MTS Adjustment

Input Level Adjustment

[ Setting ]

1. Connect a Digital Volt Meter to Pin-1 of K36P3 on the

MTS unit and the ground.

Receive the channel with audio 1KHz 100% modulation signal.

3. Set the television to following conditions: Audio Mode: Stereo Surround and BBE: OFF

[ Adjustment ]

1. Enter the Ser vice Mode, and select item “CXA2104”

with ▲ or ▼ key, then press the VOLUME + or - key to enter the Sub menu.

2. Select item Write 0 of CXA2104 with ▲ or ▼ key.

3. Adjust voltage to become DC 400mVrms±30% by pressing the VOLUME + or-key .

CXA2104 0

Write 2 20

Data V alue

Item No.

3. Adjust the level of 300Hz at

Pin-1 of K36P3

to become

minimum level by pressing the VOLUME + or-key .

Pin-3 of K36P3 (L)

Minimum leakage

4KHz

4. Select item Write 1 (High Separation Adjustment) of CXA2104 with ▲ or ▼ key.

5. Adjust the level of 4KHz at

Pin-3 of K36P3

to become

minimum level by pressing the VOLUME + or-key .

6. Repeat steps 2 to 5 for best separation.

CXA2104 0

Write 1 20

Data V alue

Item No.

CXA2104 0

Write 0 7

Data V alue

Item No.

Stereo Separation Adjustment

[ Setting ]

1. Connect an oscilloscope:

Probe-A to Pin-1 of K36P3 and the ground. Probe-B to Pin-3 of K36P3 and the ground.

Receive a MTS channel.

3. Set the television to following conditions: Audio Mode: Stereo Surround and BBE: OFF

[ Adjustment ]

1. Enter the Ser vice Mode, and select item “CXA2104”

with ▲ or ▼ key, then press the VOLUME + or - key to enter the Sub menu.

2. Select item Write 2 (Low Separation Adjustment) of CXA2104 with ▲ or ▼ key.

-15-

Mechanical Disassembly

AV1

AV2

AV3

AV5

AUDIO

DVD INPUT

1. Stand Removal

1. Position TV face down on a padded or cushioned surface to protect the screen and finish.

2. Remove 2 screws and pull the stand in the direction of the arrow to remove.

AV1

AV2

AV3

AV5

AUDIO

DVD INPUT

Cushion

+ 33 hidden pages