Hitachi yk024e schematic

No.024E

SERVICE MANUAL

The LCD panel made from AUO is used for this product.

32LD380TA

Caution

Be sure to read this manual before servicing. To ensure safety from ﬁ re, electric shock, injury, harmful radiation and materials, various measures are provided in this Plasma Monitor. Be sure to read cautionary items described in the manual before servicing. These servicing instructions are for use by qualiﬁ ed 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 qualiﬁ ed to do so.

Service Warning

1. Since the Panel Module and the front Filter are made of glass, handling the broken Module and Filter carefully and with caution in order not to receive injury.

2. Replacement work should be started after the Panel Module and the AC/DC Power supply have become sufﬁ ciently cool.

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

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

5. 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.

Contents

LOCATION OF CONTROL ----------------------------3

REMOTE CONTROL ----------------------------------- 4

GENERAL SPECIFICATIONS -----------------------5

DISASSEMBLY INSTRUCTIONS ----------------- 11

SERVICE MODE LIST ------------------------------- 13

WHEN REPLACING EEPROM -------------------- 13

ELECTRICAL ADJUSTMENTS -------------------- 14

BLOCK DIAGRAM ------------------------------------ 17

PRINTED CIRCUIT BOARDS ---------------------- 23

INTERCONNECTION DIAGRAM ----------------- 29

MECHANICAL EXPLODED VIEW ---------------- 30

MECHANICAL REPLACEMENT PARTS LIST

ELECTRICAL REPLACEMENT PARTS LIST

------- 33

-------- 35

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

LCD Display

January 2006 Digital Media Division

CAUTION FOR SAFETY

Please read this page before repair the monitor. This page explains to following items for keep the safety of set and prevent to accident during repair work.

We explain by symbol at happen the damage or injury when took wrong repair.

Warning

Caution

We made the symbol as below, which are kind of following items.

This symbol means "CAUTION"

This symbol means "POSSIBLE to

ELECTRIC SHOCK"

This symbol means "possible to die or heavy damage"

This symbol means "possible to damage or something will break"

This symbol means "MUST"

This symbol means "DO NOT"

WARNING

Should be follows to instructions.

We indicates to cabinet, chassis and

parts by label, which are special atten-

tion part.

Please follow to note and [Safety

Instructions] of User’s Manual.

Prevent the electric shock.

Please take care during working

because monitor has high voltage part

and power supply part.

Possible to die if you touch to these

place by miss take.

Please disconnect power plug during

overhaul, reassemble or change parts.

You will die or take damage by electric

shock if you touch to live part.

Use recommended components.

Please use to same characteristic com-

ponent, which is same as previous for

your safety and keep reliability espe-

cially marked by

cuit diagram.

It is reason of electric shock or fire if

you use non-recommended compo-

nent.

in parts list and cir-

Should be kept same style of wiring or component.

Monitor uses tubes or tapes, which made by insulator, and some components are keep distance from surface of PWB for safety. Internal leads kept from hot part or high voltage part by clamper or styling, so please return to original condition for prevent to electric shock or fire.

Should be done safety check after finished.

Every part (removed screws, component and wiring) should be returned to previous condition. Check around repair position for make damage by miss take and measure the insulated impedance by meg-ohm meter. Confirm the value of impedance, that value is more than 4M ohm. It is reason for electric shock or fire if that value is less than 4M ohm.

Nobody can check and repair to the code and combination circuit of HDCP.

Never remove the shield case, which is assembled to the code and combination circuit of HDCP.

Location of controls

You can adjust the angle of the TV-screen for 2˚ forward or for 6˚ backward from vertical angle.

Left Side

Approx. 6˚

Approx. 2˚

Front Side

AV3 IN

Top

Securing to a wall or pillar

Using a commercially available cord, chain, and clamp, secure the set to a wall or pillar.

screw

hook

cord or chain

Wall or Pillar

cord or chain

clamp

10 11

Anti-Tumble Measure

Description of Indicators and Controls

1. (SUB-POWER) button: To turn the unit standby mode on and off.

2. INPUT-button: Select input mode for TV/AV/COMPONENT/HDMI/PC.

3. MENU-button: To display the menu-screen.

4. VOLUME

5. PROGRAM ▲/▼ buttons: Press ▲ to change to a higher numbered channel set into memory. Press

▼ to change to a lower numbered channel set into memory. In Menu : Setting. In Standby : Turning on the unit.

6. HEADPHONES jack: Plug headphones with a mini plug (3.5 mm) into this jack.

7. AV3-Input: Input for analogue A/V-Signal (Composite). If your equipment has an S-video connector,

use an S-video cable instead of a standard yellow video cable (You still must connect the standard red and white audio cables for full system connection, but do not connect a standard yellow video cable at the same time or the picture performance will be unacceptable.)

8. Main Power Switch: To turn the unit on or off completely.

9. Loudspeakers

10. Remote sensor

11. STANDBY/ON mode indicator: It lights up in red at STANDBY, and in green at POWER ON.

▲/▼ buttons : To adjust the volume. In Menu : Setting.

Remote Control

Function

Turn the unit on or off

Sleep-Timer

Display program position number

Turn the sound on/off

Select channel Select Teletext page Enter Password

Switches between the present channel and the last selected channel Sub Page selection

Call Menu

Select TV-channel or In Menu: Setting In Standby: Turning on the unit

Volume In Menu: Setting

Memorize

Select input source

Two Channel-Sound AUDIO 1/2 selector Teletext page 100

Teletext ON/ Mix/ OFF

Reset Sound/Picture

Teletext enlargement

Program position-skipping Answer a Quiz

Teletext-Timer display Hold the text page

Fastext/TOPtext buttons

Teletext

page step by step

Select picture format

GENERAL SPECIFICATIONS

G-1 TV LCD LCD Size / Visual Size 31.5 inch / 800.4mmV

System LCD Type Color TFT LCD

Color System PAL/SECAM/NTSC Speaker 2 Speaker

Sound Output MAX 10W + 10W

NTSC3.58+4.43 /PAL60Hz Yes

G-2 Tuning Broadcasting System

System Tuner and System 1Tuner

Receive CH Destination UK, CCIR Hyper, USA

Intermediate Frequency Picture(FP)

Auto Tuning Method Preset CH 110 Stereo/Dual TV Sound NICAM/A2 Dual Tuner Sound Muting Yes

G-3 Power Power Source AC 100-240V AC 50/60Hz

Power Consumption at AC 150 W at AC 100-240 V 50/60 Hz

Protector Power Fuse Yes

G-4 Regulation Safety IEC60065,GOST, CB, AS/NZS, PSB

G-5 Temperature Operation +5oC ~ +40oC

G-6 Operating Humidity Less than 80% RH

Number of Pixels(H x V) 1366(H) x 768(V)

View Range Left/Right 85/85 degree

Position Front Size 2.2 x 5.0 inch Impedance 4 ohm

10%(Typical) ---

CH Coverage

Sound(FS) FP-FS

DC ---

Stand by (at AC) 1 W at AC 100-240 V 50/60 Hz Per Year -- kWh/Year Energy Star Yes

Safety Circuit Yes IC Protector(Micro Fuse) Yes

Radiation CISPR, GOST, AS/NZS X-Radiation ---

Storage -20oC ~ +60oC

Up/Down 85/85 degree

U.K., CCIR, US System B/G, D/K, I/I, M

1~S6, S7~S36, S37~E69 PAL/SECAM(U&VH)/NTSC

38.9/38.9/38.9/38.9MHz

33.4/32.9/32.4/34.4MHz

5.5/6.0/6.5/4.5MHz ALL Band (Not C.C.I.R. CH Plan)

at DC --

GENERAL SPECIFICATIONS

G-7 On Screen Menu (TV) Yes

Display Menu Type Icon

Menu (PC) Yes

Picture Yes

Audio Yes

Setup Yes

Option

Picture Yes

Audio Yes

Brightness Yes Contrast Yes Color Yes Tint (NTSC Only) Yes Sharpness Yes DNR On/Off Yes Color Temperature Yes Blue Back No Film Mode Yes

NICAM Auto/Off Yes Bass Yes Treble Yes Balance Yes Perfect Volume Yes Surround On/Off No Speakers On/Off Yes HDMI Yes BBE No WOW SRS 3D Yes WOW Focus Yes WOW Trubass Yes

Auto Tuning Yes Manual Tuning Yes Sort(CH Allocation) Yes Backlight Yes Text Language Yes Language Yes Position (Vertical Position) Yes Auto 4:3 Default No AV2 Output No AV2 Input No Color System(AV Color) Yes Inversion No Screen Wipe(Full White) No Screen Saver No Static Image No

Yes On Timer Yes Off Timer Yes Panel Lock Yes

Brightness Yes Contrast Yes HOR Position Yes VER Position Yes Clock Phase Yes Horizontal Clock Yes AUTO ADJUST No Amplitude Red Yes Amplitude Green Yes Amplitude Blue Yes WXGA Mode Yes WVGA Mode Yes

NICAM Auto/Off No Bass Yes Treble Yes Balance Yes Perfect Volume Yes Surround On/Off No Speakers On/Off Yes HDMI Yes BBE No WOW SRS 3D Yes WOW Focus Yes WOW Trubass Yes

GENERAL SPECIFICATIONS

Control Level Yes

Nicam ST Yes Tone 1/2 Yes Pin Code No Freeze No CH/AV/PC Yes Hotel Lock No Wide Mode Yes Sleep Timer Yes Sound Mute Yes Input Select Yes NOT AVAILABLE Yes

G-8 OSD Language English / Chinese(Simplified) /

G-9 Clock and Sleep Timer Max Time 120 Min

Timer Step 10 Min

On/Off Timer Program(On Timer / Off Timer) 1 Program Wake Up Timer No Timer Back-up (at Power Off Mode) more than -- Min Sec

Volume Yes Brightness Yes Contrast Yes Color Yes Tint (NTSC Only) Yes Sharpness Yes Tuning Yes Bass Yes Treble Yes Balance Yes HOR Position Yes VER Position Yes Clock Phase Yes Horizontal Clock Yes Amplitude Red Yes Amplitude Green Yes Amplitude Blue Yes Backlight Yes

Chinese(Traditional) / Russia

GENERAL SPECIFICATIONS

G-10 Remote Unit RC-MA

Control Glow in Dark Remocon No

Remocon Format HITACHI Format HITACHI Custom Code 50-AF h Power Source Voltage(D.C) 3V

Total Keys Keys Power ( Stand By ) Yes

T'TEXT Keys TEXT / MIX / TV Yes

UM size x pcs UM-4 x 2 pcs

1 Yes 2 Yes 3 Yes 4 Yes 5 Yes 6 Yes 7 Yes 8 Yes 9 Yes 0 Yes Volume Up / Right Yes Volume Down / Left Yes Sleep Yes Recall (CH Call) Yes Menu Yes Enter Yes Mute Yes Picture Size Yes Fine Tuning + No Fine Tuning - No Input Select Yes Multi Picture No Picture Position No Picture Main/Sub No

CH Up / Page Up / Up Yes CH Down / Page Down / Down Yes Red Yes Green Yes Yellow Yes Blue Yes F/T/B(Expand) / Normal Yes Reveal / Skip Yes Reset / Audio 1/2 Yes Hold / Status Yes Sub Page / Quick View Yes

GENERAL SPECIFICATIONS

G-11 Features Auto Shut Off Yes

G-12 Accessories Owner's Manual Language English / Chinese(Simplified) /

BBE No SRS WOW(SRS 3D/Focus/Tru Bass) Yes Variable Audio Out Yes Auto Search Yes CH Sort(CH Allocation) Yes Channel Lock No Just Clock Function No Game Position No CH Label No T'Text Yes

Wide Mode Yes Picture Scroll Yes DNR Yes

Comb Filter Yes

Surround No Backlight Yes Perfect Volume(Stable Sound) Yes PFC(Power Factor circuit) Yes Auto Set Up No Power On Memory Yes Hotel Lock No PC Monitor Input Yes Freeze frame No

Remote Control Unit Yes Rod Antenna

Loop Antenna (W/ Antenna Change Plug)

U/V Mixer DC Car Cord (Center+) Guarantee Card Warning Sheet Circuit Diagram Antenna Change Plug Service Facility List Important Safeguard Dew/AHC Caution Sheet Quick Set-up Sheet Battery Yes

AC Adapter AC Cord (for AC Adapter) AC Cord Yes AV Cord (2Pin-1Pin) HDMI-DVI Cable Registration Card 300 ohm to 75 ohm Antenna Adapter

Text type Fastext / Toptext Text Language English , French, Swedish, Hungarian

w/Guarantee Card

Poles Terminal -

Terminal -

UM size x pcs UM-4 x 2 pcs OEM Brand Yes(Maxell)

Finnish, Turkish, German, Dutch

Portuguese, Spanish, Italian, Greek

Polish, Russian, Bulgarian,

Serbian, Croatian, Slovene,

Czech, Slovakian, Rumanian.

5 Lines

Chinese(Traditional) / Russia

No No No No No No No No No No

No No

No No No No

GENERAL SPECIFICATIONS

G-13 Interface Switch Front Sub Power (Tact) Yes

Indicator Power / Stand-by Yes(GREEN / RED)

Terminals Rear Video Input 1 RCA x 1

Side Video Input 3 RCA x 1

G-14 Set Size Approx. W x D x H (mm) 822 x 332.5 x 604

G-15 Weight Net Approx. 19.0kg (41.9 lbs)

G-16 Carton Master Carton

Gift Box Material Double/Brown

Drop Test

Container Stuffing 201

G-17 Material Cabinet Cabinet Front PS 94V0 Non-Halogen

PCB Non-Halogen

G-18 Environment Environmental standard requirement Green procurement of HITACHI

Pb-free Phase3(Phase3A) WEEE

System Select No Main Power SW Yes Channel Up/Menu Up Yes Channel Down/Menu Down Yes Volume Up/Menu > Yes Volume Down/Menu < Yes Input Select Yes Menu Yes

On Timer No

Audio Input S- Input Video Input 2 RCA x 1 Audio Input S- Input Video Output RCA x 1 Audio Output RCA x 2(Variable L, R) Component In 1 Audio Input (Component In use) Component In 2 Audio Input (Component In use) Other Terminal No Euro Scart (21Pin) No HDMI Input(w/ Analog Audio L/R) Sub Woofer Out Yes PC Monitor Input (D-Sub) Audio Input Diversity No Ext Speaker No DC Jack 12V(Center +) No VHF/UHF Antenna Input AC Inlet

Audio Input RCA x2(L/MONO,R) S- Input Other Terminal Headphone

w/o Stand,Handle Approx. W x D x H (mm)

Net w/o Stand,Handle Approx. 16.5kg (36.4 lbs) Gross Approx. 23.0kg (50.7 lbs)

Content --- Sets Material --- / --Dimensions W x D x H(mm) --Description of Origin ---

Dimensions W x D x H(mm) 917 x 441 x 720 Design As per Buyer's Description of Origin

Height (cm) 46

Cabinet Rear PS 94V0 Non-Halogen

Eyelet Yes

RCA x 2(L/MONO, R)

Yes

RCA x 2(L/MONO, R)

Yes

RCA x 3

RCA x 2(L/MONO, R)

RCA x 3

RCA x 2(L/MONO, R)

Yes

φMini Pin Jack(3.5), STEREO

DIN Type

Yes

822 x 115 x 556.5

Natural Dropping At 1 Corner / 3 Edges /

6 Surfaces

Sets/40' container

DISASSEMBLY INSTRUCTIONS

REMOVAL AND INSTALLATION OF FLAT PACKAGE IC

REMOVAL

Put Masking Tape (cotton tape) around the Flat Package

1. IC to protect other parts from any damage.

(Refer to Fig. 1-1.) NOTE

Masking is carried out on all the parts located within 10 mm distance from IC leads.

When IC starts moving back and forth easily after

3. desoldering completely, pickup the corner of the IC using tweezers and remove the IC by moving with the IC desoldering machine. (Refer to Fig. 1-3.)

NOTE

Some ICs on the PCB are affixed with glue, so be careful not to break or damage the foil of each IC leads or solder lands under the IC when removing it.

Blower type IC desoldering machine

Masking Tape (Cotton Tape)

Heat the IC leads using a blower type IC desoldering

machine. (Refer to Fig. 1-2.)

NOTE

Do not rotate or move the IC back and forth , until IC can move back and forth easily after desoldering the leads completely.

Blower type IC desoldering machine

Fig. 1-1

Tweezers

Peel off the Masking Tape.4. Absorb the solder left on the pattern using the Braided

5. Shield Wire. (Refer to Fig. 1-4.)

NOTE

Do not move the Braided Shield Wire in the vertical direction towards the IC pattern.

Fig. 1-3

Braided Shield Wire

Soldering Iron

Fig. 1-2

IC pattern

Fig. 1-4

+ 25 hidden pages