Hitachi ULTRAVISION L42S504 Bedienungsanleitung

Caution: Be sure to read this manual before servicing. To ensure safety from fire, electric shock, injury, harmful

radiation and materials, various measures are provided in this LCD TV. Be sure to read cautionary items described

in the manual before servicing. These servicing instructions are for use by qualified service personnel only. To

reduce the risk of electric shock, do not perform any servicing other than that described in the operating instructions

unless you are qualified to do so.

Service Warning

1. Replacement work should be started after the Panel Module and the AC/DC Power supply have become

sufficiently cool.

2. Special care should be taken when working near the display area in order not to damage its surface.

3. The Panel Module should not be touched with bare hands in order to protect its surface from blemishes and

damage.

4. It is recommended that you use clean soft gloves during the replacement work in order to protect not only the

display area of the Panel Module but also yourself.

Initial Edition 2010-2 v1

L42S504

HITACHI TV

HITACHI

Schematic Diagram……...………………………...………16

Connection Diagram……..……….………….……..……..31

Main Parts View.……..……….………………....…….......32

PCB Layout…………..………………………....……….....33

Exploded View…………..………………..…….................39

Parts List………...…..……..............................................41

Features…….……….…........................................……......3

Dimensions………..……..……………………………………4

General Specification...................................…………........5

Firmware Upgrade.………….………….……..………..........6

Adjustment…….…………..………..….………..….….….....7

Troubleshooting…………...…………………….…….........10

Block Diagram.........………………...………….………......14

Table of Contents

- NOTICE-

All warranty parts are provided through

Hitachi Customer Service.

All Servicers should call:

800-654-7013

Updated: 073010 OR

L42S504

Caution for Safety

Please read this page before repair the TV.

The following safety precautions are designed to help you stay safe and prevent accidents during the repair work.

●Please take note of these cautionary flags.

Warning This means "Potential to sustain injury or even death."

Caution This means "Potential to sustain breakage or irreparable damage."

●Also note these cautionary icons.

This means "CAUTION" This means "MUST"

This means "POTENTIAL

ELECTRIC SHOCK" This means "DO NOT"

WARNING

■Follow instructions. ■Must use same types of wires and components.

The cabinet, chassis, and labels

are parts that require attention.

You must follow the caution notes

and safety instructions presented

throughout this User Manual to

prevent damage to them or injury

to yourself.

The TV uses special tubes and

tapes made from insulated

materials. Moreover, some

materials are kept from making

contact with the PWB for the sake

of safety. Internal leads are kept

from hot parts or high voltage

parts by means of clamps or

other measures. As such, you

must restored these parts to their

original conditions in order to

prevent electric shock or fire.

■Prevent electric shock.

Exercise caution while working

on the device as the TV contains

high voltage parts and supply. It

is possible to sustain severe

injury or death if you accidentally

touch the wrong parts. You must

disconnect the power supply

while servicing, reassembling, or

change parts. If you touch a live

connection it is possible to

sustain severe injury or death.

■Perform safety check when done.

Every part (such as removed

screws, components, and wiring)

must be restored to their prior

conditions after servicing. Be

sure to check everything that was

repaired for damage or mistakes.

Also measure the insulated

impedance with a meg-ohm

meter to confirm that the

impedance value is more than 4M

ohm. If the impedance value is

less than 4M ohm, then electric

shock or fire may result.

■Use recommended components.

Use only the recommended

components or components that

structurally identical to the

originals. This is to ensure safety

and reliability. Pay special

attention to parts in the parts list

and circuit diagrams marked with

. If you use

non-recommended components,

then electric shock or fire may

result.

L42S504

PRECAUTIONS

●Cleaning the TV’s LCD screen panel

Before cleaning the TV, turn it off and disconnect the power plug from the power outlet. To prevent scratching or

damaging of the LCD screen face, do not knock or rub the surface with sharp or hard objects. Clean the screen with

a soft cloth moistened with warm water and dry with a second soft cloth. If it is not enough, then use a cloth with mild

detergent. Do not use harsh or abrasive cleaners.

●Cleaning the TV's cabinet

Use a soft cloth to clean the TV's cabinet and control panel. When excessively soiled, dilute a neutral detergent in

water, wet and wring out the soft cloth in it, gently clean the cabinet, and then wipe it down with a dry soft cloth.

Never use acid/alkaline detergents, alcoholic detergents, abrasive cleaners, powder soaps, OA cleaners, car wax,

glass cleaners, and so on. They will cause discoloration, scratches or cracks.

Features

●Enhanced definition LCD display panel

This specification applies to the 42.0 inch Color TFT-LCD Module T420HW06 V5. This LCD module has a TFT

active matrix type liquid crystal panel 1,920x1,080 pixels, and diagonal size of 42.0 inch. This module supports

1,920x1,080 mode. Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical

stripes. Gray scale or the brightness of the sub-pixel color is determined with a 8-bit gray scale signal and Frame

Rate Control (FRC) for each dot.

The T420HW06 V5 has been designed to apply the 10-bit 2 channel LVDS interface method. It is intended to

support displays where high brightness, wide viewing angle, high color saturation, and high color depth are very

important.

●New High Gloss Black Frame

●(4) HDMI® (V.1.3 with CEC) - 1080p60, 1080p24 Input Compatible

●New Multi-Function Remote Control

●120Hz 1080p Perfected

●Reel 120 Motion Correction

●Dynamic/Standard/Movie/Custom/Game/Pro-Day/Pro-Night Picture Memories

●3 Preset Color Temperatures

●Game Mode

●Calibration Menu

L42S504

Dimensions

L42S504

General Specification

Inputs

Power Input: AC 120V, 60Hz

Power Consumption

Maximum Power: 220 W, 1.83 A

Antenna Input Impedance: 75 Ohm

Channel Coverage: 191ch.

VHF-Band: 2~13; UHF-Band: 14~69

CATV Mid Band: A5~A1, AI

Super Band: J-W; Hyper Band: W+1 - W+28; Ultra Band: W+29 - W+94

Television System: NTSC Standard, ATSC Standard (8 VSB, 64-QAM,

256-QAM)

Video: 1.0Vp-p, 75 Ohm

S-Video

Luminance(Y): 1.0Vp-p, 75 Ohm; Chrominance(C): 0.286Vp-p, 75 Ohm

Component Video

Luminance(Y): 1.0Vp-p, 75 Ohm; Chrominance(Pb/Pr): 0.7Vp-p, 75 Ohm

Audio Input Impedance: more than 10k Ohm

Audio Input Sensitivity: 300mVrms

HDMI: (19 PIN)

Video

Display Resolution: 1920 x 1080p

Wide Viewing Angle

Color Temperature Presets: High, Standard and Medium

Multiple Screen Fill Modes: (Auto/4:3/16:9/Zoom 1/Zoom 2/Full)1

4MB 10-bit 3D Y/C Comb Filter

Picture Modes: Dynamic, Standard, Movie, Custom and Game, Pro-Day,

Pro-Night

Audio

CONEQTM Sound Quality

MTS Stereo/SAP

4 Sound Modes (Custom, Standard, Movie, News)

Rated Output Power: 12W+12W

Inputs/Outputs

Wideband Component Y, Pb, Pr

Composite Video

S-Video

Antenna (RF)Input

Audio Output

Optical Output

HDMI

USB Multimedia/Upgrade Slot

RGB Input

RGB Audio Input

Phone Jack for Headphones

L42S504

Firmware Upgrade

Equipments and materials

1. TV remote control

2. AC power 110V/ 60Hz

3. Flash storage

Preparations

Use PC to write software to a flash storage, press “on” button to start the TV. (Take L46S603 for example)

1. Insert the flash storage into the USB port, and you will see a picture in which you can choose “YES” or “NO”

(Picture1), you choose “YES”, and then the software will update automatically. (Picture 2)

2. After software update is finished, you put out the flash storage and restart the TV.

3. Press “menu+1999+select”, check whether software version is ok. (Picture 3 the fifth row)

Picture 1

Picture 2

Picture 3

Important Service Notice:

We recommend you install latest available firmware before hardware replacement. Check service

web site (www.hitachiserviceusa.com) for latest firmware version and availability.

L42S504

Adjustment

1. ADC Adjustment

Ⅰ. In the TV mode adjust volume to zero, press menu key and then press number key 1 Æ9 Æ9 Æ9. It will

achieve the factory mode. Select the item of White Balance and press right key to enter it.

Change TV, press the item “Current Source” to Component mode and change signal to 1080i mode, press the item

“Auto Color”; Change TV, press the item “Current Source” to PC mode and change signal to PC TIMING

137(1024X768) Pattern 147 (16 Grays), press the item “Auto Color”.

2. White Balance, Luminance Adjustment

Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.

Before started adjust white balance, please set the Ca210 Channel to 05 Channel and set it’s mode to xyLv mode.

Color Temp. Cold Normal Warm

HDMI Mode

x 272 285 313

y 278 293 329

Y Panel Max Luminance

Note: The tolerance of the Cold color coordinates should be less than ± 10; The tolerance of the Normal

color coordinates should be less than ± 20; The tolerance of the Warm color coordinates should be less than

± 20;

How to setting the Ca210 channel, you can reference to Ca210 user guide or simple use the “Memory CH” up or

L42S504

down to set the channel to 05 channel, and use the “Mode” key to set the mode to xyLv.

Following is the procedure to do white-balance adjust

Note: We can use the HDMI white balance adjustment to cover the white balance of all source modes, this

method is meeting to the Zoran 785 software.

HDMI Mode:

Ⅰ. In the TV mode adjust volume to zero, press menu key and then press number key 1 Æ9 Æ9 Æ9. It will

achieve the factory mode. Select the item of White Balance and press right key to enter it.

Ⅱ. Before to adjust the white balance, please press the factory mode OSD of “Reset” to reset all white

balance factory setting.

In the White Balance you can adjust 8 items.

1> R Offset, G Offset, B Offset ÆR, G, B Offset adjust.

2> R Gain, G Gain, B Gain ÆR, G, B Gain adjust.

3> ZR-Bright adjust;

4>ZR-Contrast adjust;

5>ZR-T ÆColor Temp adjust;

Ⅲ. Gain adjustment:

A. Adjust Cool color-temperature:

1. Set the pattern generator to pattern 104 or 0 IRE pattern. And adjust the Item “ZR-Bright” to min luminance.

L42S504

2. Switch the Ca210 to xyLv-mode (with press “MODE” button)

3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)

4. The LCD-indicator on Ca210 will show x =272, y =278, Lv can adjust to max luminance.

5. Use the item R Offset and B Offset adjust to Adjust black balance: use 20 IRE(Pattern 190) signal, and adjust the

black balance, until the Ca210 show x =272, y =278.

6. Use the item R Gain and B Gain to adjust white balance: use 100 IRE (Pattern 105) signal, and adjust the white

balance, until the Ca210 show x =272, y =278.

7. Adjust item “ZR-Contrast” to check color temperature is saturation or not: Add by 7 steps and then to adjust the

item R Gain and item B Gain to check the color temperature is saturation or not, until is saturation.

8. Enter the item “Color Temp” to select another color temperature to adjust.

B. Adjust Normal temperature:

1. Set the pattern generator to pattern 104 or 0 IRE pattern. Adjust the Item “ZR-Bright” value and can adjust to min

luminance

2. Switch the Ca210 to T△uvLv-mode (with press “MODE” button)

3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)

4. The LCD-indicator on Ca210 will show T=9300K.

5. Adjust the Color Temp item: Normal, until Ca210 indicator reached the value T=9300k.

C. Adjust Warm color-temperature:

1. Set the pattern generator to pattern 104 or 0 IRE pattern. Adjust the Item “ZR-Bright” value and can adjust to min

luminance

2. Switch the Ca210 to T△uvLv-mode (with press “MODE” button)

3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)

4. The LCD-indicator on Ca210 will show T=6500K.

5. Adjust the Color Temp item: Warm, until Ca210 indicator reached the value T=6500k.

Press “Exit” button on remote control to quit from factory mode.

NOTE 1:

If you choose to do EEPROM Initialization (EEPROM Init), you MUST write down all White Balance values before

doing so. These values will be reset to a default value.

All white balance factory adjustments will be LOST. It can be done as a NOTE anywhere in same page, please.

NOTE 2:

Activating Reset to Default Settings (Reset to Def) will zero BOTH hour counters, the one for back light time and the

one for Total time.

You may want to add a condition or event in which this would be recommended.

L42S504

Troubleshooting

1). No Picture, No Sound

First, confirm the status of Stand-by / On lamp (LED), then survey by following the flowchart as shown below.

Status of Stand-by / On lamp (LED) Estimated cause, method of survey

Not lighting Confirm the connection of AC cord is complete, and AC

switch is turned on, then forward to (1).

Lighting in red Power save mode of Video or PC input. It is not defect.

Lighting in red Turn power on by remote controller.

If it does not turn power on, forward to (2).

Lighting in blue Forward to (2).

(1) Stand-by / On lamp (LED)

is not lighting

The voltage of

pin No.11,No.12 of

CN701 on

Main Board is 5V?

Power Board

Yes

Main Board

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