Toshiba 30HFX84 Service Manual

FILE NO. 050-200419

DOCUMENT CREATED IN JAPAN, Aug., 2004

SERVICE MANUAL

COLOR TELEVISION

30HFX84

SERVICING NOTICES ON CHECKING

As for the places which need special attentions, they are indicated with the labels or seals on the cabinet, chassis and parts. Make sure to keep the indications and notices in the operation manual.

2. AVOID AN ELECTRIC SHOCK

There is a high voltage part inside. Avoid an electric shock while the electric current is flowing.

3. USE THE DESIGNATED PARTS

The parts in this equipment have the specific characters of incombustibility and withstand voltage for safety. Therefore, the part which is replaced should be used the part which has the same character. Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark, the designated parts must be used.

4. PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING

There are parts which use the insulation material such as a tube or tape for safety, or which are assembled in the condition that these do not contact with the printed board. The inside wiring is designed not to get closer to the pyrogenic parts and high voltage parts. Therefore, put these parts in the original positions.

5. TAKE CARE TO DEAL WITH THE CATHODE-RAY TUBE

In the condition that an explosion-proof cathoderay tube is set in this equipment, safety is secured against implosion. However, when removing it or serving from backward, it is dangerous to give a shock. Take enough care to deal with it.

6. AVOID AN X-RAY1. KEEP THE NOTICES

Safety is secured against an X-ray by considering about the cathode-ray tube and the high voltage peripheral circuit, etc. Therefore, when repairing the high voltage peripheral circuit, use the designated parts and make sure not modify the circuit. Repairing except indicates causes rising of high voltage, and it emits an X-ray from the cathoderay tube.

PERFORM A SAFETY CHECK AFTER

7. SERVICING

Confirm that the screws, parts and wiring which were removed in order to service are put in the original positions, or whether there are the portions which are deteriorated around the serviced places serviced or not. Check the insulation between the antenna terminal or external metal and the AC cord plug blades. And be sure the safety of that.

(INSULATION CHECK PROCEDURE)

Unplug the plug from the AC outlet.

Remove the antenna terminal on TV and turn on the TV.

Insulation resistance between the cord plug terminals and the eternal exposure metal [Note 2] should be more than 1M ohm by using the 500V insulation resistance meter [Note 1].

If the insulation resistance is less than 1M ohm, the inspection repair should be required.

[Note 1]

If you have not the 500V insulation resistance meter, use a Tester.

[Note 2]

External exposure metal: Antenna terminal

Earphone jack

HOW TO ORDER PARTS

Please include the following informations when you order parts. (Particularly the VERSION LETTER.)

1. MODEL NUMBER and VERSION LETTER The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be

found at the end of the SERIAL NUMBER.

2. PART NO. and DESCRIPTION You can find it in your SERVICE MANUAL.

IMPORTANT

Inferior silicon grease can damage IC's and transistors. When replacing an IC's or transistors, use only specified silicon grease (YG6260M). Remove all old silicon before applying new silicon.

A1-1

ABOUT LEAD FREE SOLDER (PbF)

Distinction of PbF PCB:

PCBs (manufactured) using lead free solder will have a PbF printing on the PCB. (Please refer to figures.)

Caution:

Pb free solder has a higher melting point than standard solder;

•

Typically the melting point is 50°F~70°F(30°C~40°C) higher. Please use a soldering iron with temperature control and adjust it to 650°F ± 20°F (350°C ± 10°C). In case of using high temperature soldering iron, please be carefull not to heat too long. Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C).

•

All products with the printed circuit board with PbF printing must be serviced with lead free solder.

•

When soldering or unsoldering, completely remove all of the solder from the pins or solder area, and be sure to heat the soldering points with the lead free solder until it melts sufficiently.

Recommendations

Recommended lead free solder composition is Sn-3.0Ag-0.5Cu.

A1-2

TABLE OF CONTENTS

SERVICING NOTICES ON CHECKING.....................................................................................

HOW TO ORDER PARTS ..........................................................................................................

IMPORTANT ...............................................................................................................................

ABOUT LEAD FREE SOLDER (PbF)........................................................................................

TABLE OF CONTENTS..............................................................................................................

GENERAL SPECIFICATIONS ...................................................................................................

DISASSEMBLY INSTRUCTIONS

1. REMOVAL OF ANODE CAP ...............................................................................................

2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ................................................

SERVICE MODE LIST ................................................................................................................

CONFIRMATION OF HOURS USED .........................................................................................

WHEN REPLACING EEPROM (MEMORY) IC ..........................................................................

ELECTRICAL ADJUSTMENTS..................................................................................................

BLOCK DIAGRAMS

TV.............................................................................................................................................

SOUND AMP/FRONT JACK ...................................................................................................

MICON1/STEREO ...................................................................................................................

AV/SYNC COUNT/CONNECTOR...........................................................................................

INTERFACE1...........................................................................................................................

INTERFACE2...........................................................................................................................

MICON2 ...................................................................................................................................

PRINTED CIRCUIT BOARDS

MAIN ........................................................................................................................................

AV/CONNECTOR....................................................................................................................

HD-MI.......................................................................................................................................

FRONT JACK ..........................................................................................................................

CRT..........................................................................................................................................

SCHEMATIC DIAGRAMS

CHROMA/PROGRESSIVE/PIN CUSHION ............................................................................

DEFLECTION ..........................................................................................................................

TV POWER..............................................................................................................................

OPERATION............................................................................................................................

SOUND AMP/FRONT AV........................................................................................................

MICON1 ...................................................................................................................................

STEREO ..................................................................................................................................

TUNER/AV...............................................................................................................................

REGURATOR ..........................................................................................................................

SYNC COUNT/CONNECTOR.................................................................................................

CRT/CVM.................................................................................................................................

INTERFACE1...........................................................................................................................

INTERFACE2...........................................................................................................................

MICON2 ...................................................................................................................................

WAVEFORMS .............................................................................................................................

MECHANICAL EXPLODED VIEWS...........................................................................................

MECHANICAL REPLACEMENT PARTS LIST .........................................................................

ELECTRICAL REPLACEMENT PARTS LIST...........................................................................

A1-1 A1-1 A1-1 A1-2 A2-1 A3-1~A3-5

B1-1 B2-1, B2-2 C-1 C-1 C-2 D-1~D-6

E-1, E-2 E-3, E-4 E-5, E-6 E-7, E-8 E-9, E-10 E-11, E-12 E-13, E-14

F-1~F-4 F-5, F-6 F-7, F-8 F-9, F-10 F-11, F-12

G-1, G-2 G-3, G-4 G-5, G-6 G-7, G-8 G-9, G-10 G-11, G-12 G-13, G-14 G-15, G-16 G-17, G-18 G-19, G-20 G-21, G-22 G-23, G-24 G-25, G-26 G-27, G-28 H-1~H-4 I-1~I-3 J1-1 J2-1~J2-8

A2-1

GENERAL SPECIFICATIONS

G-1 TV CRT CRT Size / Visual Size 30 inch / 760mmV

G-2 Tuning Broadcasting System US System M

G-3 Power Power Source AC 120V AC 60Hz

G-4 Regulation Safety UL/CSA

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

G-6 Operating Humidity Less than 80% RH

System CRT Type Flat (16:9)

Color System NTSC Speaker 2 Speaker

Sound Output MAX

NTSC3.58+4.43 /PAL60Hz No

System Tuner and System 1Tuner

Receive CH Destination USA(W/ CABLE)

Intermediate Picture(FP) 45.75MHz Frequency Sound(FS) 41.25MHz

Preset CH No Stereo/Dual TV Sound Yes Tuner Sound Muting Yes

Power Consumption at AC

Protector Power Fuse Yes

Deflection 100 degree Magnetic Field BV/BH +0.45G/0.18G

Position Front Bottom Size 1.8 x 3.9 Inch Impedance 4 ohm

10W+10W

10%(Typical)

Tuning System F-Synth Input Impedance VHF/UHF 75 ohm

2 - 69, 4A, A-5 - A-1,

CH Coverage A - I, J - W, W+1 - W+84

FP-FS 4.50MHz

198 W at AC 120 V 60 Hz Stand by (at AC) 1 W at AC 120 V 60 Hz Per Year -- kWh/Year

Safety Circuit Yes IC Protector(Micro Fuse) Yes Dew Sensor

Radiation FCC/IC X-Radiation DHHS/HWC

Storage -20oC ~ +60oC

-W

A3-1

GENERAL SPECIFICATIONS

G-7 On Screen Menu Yes

Display Menu Type Icon

Picture Yes

Audio Yes

Setup Yes

Option

Locks

Control Level Yes

Stereo, SAP, Mono Yes Video Yes Color Stream(Component) Yes HDMI Yes Channel(TV/Cable) Yes CH Label Yes Video Label Yes Clock Yes Game Timer Yes Front Panel Lock Yes On Timer Yes Sleep Timer Yes Reset Yes Sound Mute Yes V-chip Rating Yes NOT AVAILABLE Yes Picture Size Yes

Mode(Picture preference) Yes Brightness Yes Contrast Yes Color Yes Tint Yes Sharpness Yes Color Temperature Yes Display Format Yes Cable Clear No SVM Yes Reset Yes

MTS Yes Bass Yes Treble Yes Balance Yes Stable Sound Yes Speakers On/Off Yes Dolby Virtual Yes WOW SRS 3D Yes WOW Focus Yes WOW Tru Bass Yes BBE No HDMI1 Yes HDMI2 Yes Reset Yes

Language Yes Clock Set Yes TV/CABLE Yes CH Program Yes Add/ Erase Yes Closed Caption Yes Picture Size Yes Picture Scroll Yes Cinema Mode Yes Aspect Yes Image Tilt Yes

Yes Timer Yes Favorite CH Yes CH Label Yes VIDEO Label Yes

Yes V-Chip Yes Lock Yes New Password Yes Front Panel Lock Yes

Volume Yes Contrast Yes Brightness Yes Color Yes Tint Yes Sharpness Yes Bass Yes Treble Yes Balance Yes Image Tilt Yes Picture Scroll Yes

A3-2

GENERAL SPECIFICATIONS

G-8 OSD Language English French Spanish G-9 Clock and Sleep Timer Max Time 120 Min

G-10 Remote Unit RC-JW

Timer Step 10 Min

Control Glow in Dark Remocon No

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

Back Light Remocon Yes Format Toshiba Custom Code TV:40-BFh Power Source Voltage(D.C) 3V

Total Keys Keys Power Yes

Multi Brand Keys Action / Menu Yes (CBL / DVD Keys) Guide / Setup Yes

(TV / CBL / DVD Keys) Mute Yes

(DVD / AUDIO Keys) Disc / AM / FM Yes (TV / DVD Keys) RECALL(Call) / (Display) Yes

(DVD / VCR Keys) Pause/Still Yes

(VCR Keys) Rec Yes

UM size x pcs UM-3 x 2 pcs

48 Keys

1 / Movie Yes 2 / Sports Yes 3 / News Yes 4 / Services Yes 5 / List Yes 6 Yes 7 Yes 8 Yes 9 Yes 0 Yes 100 / - Yes CH Up Yes CH Down Yes Volume Up Yes Volume Down Yes TV/Video(Input Select) Yes ENT,CH RTN(Quick View) Yes Menu > / FAV Up Yes Menu < / FAV Down Yes Menu Up Yes Menu Down Yes PIC SIZE Yes Light Yes SLEEP Yes Mode Yes

Favorites / Subtitle Yes Alpha sort / Audio Yes ENT(CH Enter) Yes

Info / Title Yes Exit / DVD Clear Yes

Menu/Enter / DVD MENU Yes

FF Yes Rew Yes Play Yes Stop Yes <<Slow / Dir Yes >>Slow / Dir Yes <</Skip / Search Forward Yes >>/Skip / Search Forward Yes

TV/VCR Yes

A3-3

GENERAL SPECIFICATIONS

G-11 Features Auto Degauss Yes

G-12 Accessories Owner's Manual Language English / French

Auto Shut Off Yes CABLE Yes Memory(Last CH) Yes Memory(Last Volume) Yes V-Chip Yes

SRS WOW(SRS 3D/Focus/Tru Bass) Yes Timer(On Timer /Sleep Timer) Yes Aspect Yes Cinema Mode Yes Image Tilt Yes BBE No Direct Input Selection Yes Auto Search No CH Allocation No CH Lock Yes CH Program Yes CH Label Yes SAP Yes Just Clock Function No VIDEO Label Yes VM Circuit Yes Comb Filter Yes

Super Wide Band AMP Yes Cable Clear No Hotel Lock No Closed Caption Yes Stable Sound Yes FBT Leak Test Protect Yes Video Lock Yes Game Timer(Max Time:120Min) Yes Energy Star Yes Favorite CH Yes Variable Audio Out Yes Virtual Dolby Yes Picture Size Yes Color Temperature Control Yes Mode(Picture Preference) Yes Front Panel Lock Yes Available Scan Rates (Component/HDMI) 480i/480p/720p/1080i Menu=Volume Up+Volume Down Yes Auto Setup(Language/CH Program) Yes

Remote Control Unit Yes Rod Antenna

Loop Antenna

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

AC Cord AV Cord (2Pin-1Pin) Registration Card (NDL Card) Yes PTB Sheet ESP Card 300 ohm to 75 ohm Antenna Adapter Information Sheet(for HDMI) Yes

Type USA, ORION Type

3 -D

W/ Warranty Yes

Poles Terminal

Terminal -

UM size x pcs UM-3 x 2 OEM Brand

No No No No No No No No No No No

No No No

A3-4

GENERAL SPECIFICATIONS

G-13 Interface Switch Front Power Yes

Rear AC/DC No

Indicator Power Yes(RED)

Terminals Front Video Input = VIDEO3

Rear Video Input(Rear1) = VIDEO1

G-14 Set Size Approx. W x D x H (mm) G-15 Weight Net (Approx.) 54.0 kg

G-16 Carton Master Carton

Gift Box Yes

Drop Test

Container Stuffing

G-17 Cabinet Material Cabinet Cabinet Front PS 94V0 DECABROM

PCB Non-Halogen Demand

G-18 Environment Pb Free Lead-free Solder Yes

Cd Free

Channel Up/Menu Up Yes Channel Down/Menu Down Yes Volume Up/Menu > Yes Volume Down/Menu < Yes

TV/CABLE Selector No Degauss No Main Power SW No

Stand-by No On Timer No

Audio Input = VIDEO3 S Input = VIDEO3 Yes Other Terminal No

Video Input(Rear2) = VIDEO2 S Input = VIDEO1 S Input = VIDEO2 Audio Input(Rear1) = VIDEO1 Audio Input(Rear2) = VIDEO2 Video Output Audio Output Component Input1(w/ Analog Audio L/R) Component Input2(w/ Analog Audio L/R) HDMI Input1(w/ Analog Audio L/R) HDMI Input2(w/ Analog Audio L/R) Diversity No Ext Speaker No VHF/UHF Antenna Input AC Outlet No

Gross (Approx.) 61.0kg

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

Material Double/Brown Dimensions W x D x H(mm) 916 x 691 x 711 Design As per Buyer's Description of Origin Yes

Height (cm) 40 (ORION SPEC:25)

Cabinet Rear PS 94V0 NON-DECABROM

Eyelet Demand Yes

Other

RCA

RCA x 2

RCA

Yes

RCA x 2

RCA

RCA x 2 (Variable)

RCA x 5

HDMI x 1(RCA x 2)

F Type

796 x 563 x 549.2

( 88.2 lbs) ( 102.5lbs) No Sets /--

Natural Dropping At 1 Corner /

2 Edges / 4 Surfaces

129

Sets/40' container

No No

A3-5

DISASSEMBLY INSTRUCTIONS

1. REMOVAL OF ANODE CAP

Read the following NOTED items before starting work. *

After turning the power off there might still be a potential voltage that is very dangerous. When removing the Anode Cap, make sure to discharge the Anode Cap's potential voltage.

Do not use pliers to loosen or tighten the Anode Cap terminal, this may cause the spring to be damaged.

REMOVAL

1. Follow the steps as follows to discharge the Anode Cap.

(Refer to Fig. 1-1.)

Connect one end of an Alligator Clip to the metal part of a flat-blade screwdriver and the other end to ground. While holding the plastic part of the insulated Screwdriver, touch the support of the Anode with the tip of the Screwdriver. A cracking noise will be heard as the voltage is discharged.

GND on the CRT

3. After one side is removed, pull in the opposite direction to remove the other.

NOTE

Take care not to damage the Rubber Cap.

INSTALLATION

1. Clean the spot where the cap was located with a small amount of alcohol. (Refer to Fig. 1-3.)

Location of Anode Cap

Fig. 1-3

NOTE

Confirm that there is no dirt, dust, etc. at the spot where the cap was located.

2.3.Arrange the wire of the Anode Cap and make sure the wire is not twisted. Turn over the Rubber Cap. (Refer to Fig. 1-4.)

Screwdriver

Alligator Clip

GND on the CRT

Flip up the sides of the Rubber Cap in the direction of the

2. arrow and remove one side of the support.

(Refer to Fig. 1-2.)

Rubber Cap

CRT

Support

CRT

Fig. 1-1

Fig. 1-2

4. Insert one end of the Anode Support into the anode button, then the other as shown in Fig. 1-5.

Support

CRT

5.6.Confirm that the Support is securely connected. Put on the Rubber Cap without moving any parts.

B1-1

Fig. 1-4

Fig. 1-5

DISASSEMBLY INSTRUCTIONS

REMOVAL AND INSTALLATION OF FLAT PACKAGE IC

REMOVAL

Put the Masking Tape (cotton tape) around the Flat

1. Package IC to protect other parts from any damage.

(Refer to Fig. 2-1.) 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 a tweezers and remove the IC by moving with the IC desoldering machine. (Refer to Fig. 2-3.)

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. 2-2.)

NOTE

Do not add the rotating and the back and forth directions force on the IC, until IC can move back and forth easily after desoldering the IC leads completely.

Blower type IC desoldering machine

Fig. 2-1

Tweezers

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

5. Shield Wire. (Refer to Fig. 2-4.)

NOTE

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

Fig. 2-3

Braided Shield Wire

Soldering Iron

Fig. 2-2

IC pattern

Fig. 2-4

B2-1

DISASSEMBLY INSTRUCTIONS

INSTALLATION

Take care of the polarity of new IC and then install the new

1. IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily.

(Refer to Fig. 2-5.)

Soldering Iron

Solder temporarily

Supply the solder from the upper position of IC leads

2. sliding to the lower position of the IC leads. (Refer to Fig. 2-6.)

Solder temporarily

Fig. 2-5

When bridge-soldering between terminals and/or the

4. soldering amount are not enough, resolder using a Thin-tip Soldering Iron. (Refer to Fig. 2-8.)

Thin-tip Soldering Iron

Fig. 2-8

Finally, confirm the soldering status on four sides of the IC

5. using a magnifying glass. Confirm that no abnormality is found on the soldering position and installation position of the parts around the IC. If some abnormality is found, correct by resoldering.

NOTE

When the IC leads are bent during soldering and/or repairing, do not repair the bending of leads. If the bending of leads are repaired, the pattern may be damaged. So, always be sure to replace the IC in this case.

Soldering IronSolder

Supply soldering from upper position to lower position

Fig. 2-6

Absorb the solder left on the lead using the Braided Shield

3. Wire. (Refer to Fig. 2-7.)

NOTE

Do not absorb the solder to excess.

Soldering Iron

Braided Shield Wire

Fig. 2-7

B2-2

SERVICE MODE LIST

This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter the Service Mode, press both set key and remote control key for more than 2 seconds.

Set Key

VOL. (-) MIN

Remocon Key

Releasing of V-CHIP PASSWORD. Initialization of the factory.

NOTE:

POWER ON total hours is displayed on the screen. Refer to the "CONFIRMATION OF HOURS USED".

Can be checked of the INITIAL DATA of MEMORY IC. Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".

Display of the Adjustment MENU on the screen. Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).

Do not use this for the normal servicing. If you set a factory initialization, the memories are reset such as the channel setting, and the POWER ON total hours.

Operations

CONFIRMATION OF HOURS USED

POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.

NOTE: If you set a factory initialization, the total hours is reset to "0".

Set the VOLUME to minimum.

Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.

After the confirmation of using hours, turn off the power.

MICON Version

ADDRESS DATA

INIT 000 DF CRT ON 0010 OEC7111A_073

FIG. 1

Initial setting content of MEMORY IC. POWER ON total hours.

= (16 x 16 x 16 x thousands digit value) + (16 x 16 x hundreds digit value) + (16 x tens digit value) + (ones digit value)

C-1

WHEN REPLACING EEPROM (MEMORY) IC

If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1.

ADDRESS DATA

+0 +1 +2 +3 +4 +5 +6 +7 +8 +9

+B +C +D +E +FINI

INIT 000 DF CRT ON 0010 OEC7111A_073

FIG. 1

DF A2 01 C0 A6 1C 86 BD 42 E4

01 1F 24 40 45 5D 62 45 4A

87 00 00 00 00 00 00 00 00 19

20 00 5A 98 33 04 76 30 01 07 06 40 40 40

77 05 07 21 10 07 00 22 74 81

40 C0 80 15 70 72 99 59

8F 40 00 27 0A 2A 00 13 C0

68 5B 00 73 14 1F 2D 24 16

50 60 09 00 C9 C8 E8 BC

70 80 96 8B 8C 90 22 00 90 33 23 27 2A 2D 30 A0 36 51 53 55 57 58 59 B0 C0 D0 79 42 00 00 00 08 E0 21 32 32 38 00 3F F0 --- --- --- --- --- --- ---

EF DB DB DB 15 00 00 26 06 07

80 00 3F 22 22 00 00 00 00

FF C0 52 50 8B 00 06 06 22 00

11 0A 00 07 00 00 00 B6 01 48

33 39 3C 3F 42 45 48 4B 4E

5A 5C 5D 5E 5F 61 63 65 67

5B 70

6F 71 71 72 72 73 73 74 74

76 76 77 77 77 77 78 78 78 78 15 04 04 FE E8 F0 FA 27 33 0E

54 --- --- --- --- --- --- --- ---

B3 03 0D 36 03 0000

67 0F 15 0A AA 00

00 00 00 00 00 F6

1D 6D FF FF FA FA

69 6A 6B 6C 6D 6E

75 75 75 75 76 76

DC 3C 22 22 5A 71 69 33 00

100 110 01 82 04 03 05 02 120 130 00 00 7C 3E 00 00 140 00 03 03 --- --- ---

69 33 00 44 00 77 59 94 56 02

02 02 02 02 01 00 81 00 81

02 81 02 81 02 00 81 05 00 FB F7 00 00 00 00 00 23 16 F8 08 16

0E 38 22 22 DA 71

00 88 00 D0 81 02

Table 1

Enter DATA SET mode by setting VOLUME to minimum.

Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds. ADDRESS and DATA should appear as FIG 1.

ADDRESS is now selected and should "blink". Using the UP/DOWN button on the remote, step through the ADDRESS until required ADDRESS to be changed is reached.

Press RIGHT/LEFT button to select DATA. When DATA is selected, it will "blink".

Again, step through the DATA using UP/DOWN button until required DATA value has been selected.

Pressing RIGHT/LEFT button will take you back to ADDRESS for further selection if necessary.

Repeat steps 3 to 6 until all data has been checked.

When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.

After the data input, set to the initializing of shipping.

Turn POWER on.

10.

Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.

11.

After the finishing of the initializing of shipping, the unit will turn off automatically.

The unit will now have the correct DATA for the new MEMORY IC.

C-2

ELECTRICAL ADJUSTMENTS

1. ADJUSTMENT PROCEDURE

Read and perform these adjustments when repairing the circuits or replacing electrical parts or PCB assemblies.

CAUTION

•

Use an isolation transformer when performing any service on this chassis.

•

Before removing the anode cap, discharge electricity because it contains high voltage.

•

When removing a PCB or related component, after unfastening or changing a wire, be sure to put the wire back in its original position.

•

When you exchange IC and Transistor for a heat sink, apply the silicon grease on the contact section of the heat sink. Before applying new silicon grease, remove all the old silicon grease. (Old grease may cause damages to the IC and Transistor.)

Prepare the following measurement tools for electrical adjustments.

1. Oscilloscope

2. Digital Voltmeter

3. Multi-sound Generator

4. Pattern Generator

On-Screen Display Adjustment

1. In the condition of NO indication on the screen. Press the VOL. DOWN button on the set and the Channel button (9) on the remote control for more than 2 second to appear the adjustment mode on the screen as shown in Fig. 1-1.

THEATER WIDEA I

00 OSD H

Use the Channel UP/DOWN button or Channel button (0-9) on the remote control to select the options shown in Fig. 1-2.

Press the MENU button on the remote control to end the adjustments.

To display the adjustment screen for AV, CS and HDMI mode, press the TV/VIDEO button on the remote control to set to the AV, CS and HD-MI mode. Press the VOL.DOWN button on the set and the channel (9) on the remote control for more than 2 seconds.

Fig. 1-1

FUNCTION

NO.

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19

OSD H CUT OFF H.POSI V.POSI H. SIZE V. SIZE V. LIN V-EHT H-EHT V-BLK P V-BLK S V.CENT V.LIMIT V.CORR V.S.CORR EW PARA TRAPEZIUM COR.TOP COR.BTM S.CORR

NO.

20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

FUNCTION

CORNER C.PARA C.SAW V.SYMM R.BIAS G.BIAS B.BIAS R/G.DRV B/R.DRV R.BIAS(C) G.BIAS(C) B.BIAS(C) R/G.DRV(C) B/R.DRV(C) R.BIAS(W) G.BIAS(W) B.BIAS(W) R/G.DRV(W) B/R.DRV(W) R-Y GAIN

NO.

FUNCTION

R-Y PHASE

G-Y GAIN

G-Y PHASE

BRI.CENT

BRI.MAX

BRI.MIN

CONT.CENT

CONT.MAX

CONT.MIN

COL.CENT

COL.MAX

COL.MIN

SUB CONT

TINT

SHARP.CENT

SHARP.MAX

SHARP.MIN

TILT.CENT

TEST STEREO

TEST AUDIO

Fig. 1-2

2. BASIC ADJUSTMENTS

2-1: CUT OFF

Place the set with Aging Test for more than 15 minutes.

Set condition is AV MODE without signal.

Using the remote control, set the brightness and contrast to normal position.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (01) on the remote control to select "CUT OFF".

Adjust the Screen Volume until a dim raster is obtained.

2-2: WHITE BALANCE NOTE: Adjust after performing CUT OFF adjustment.

Place the set with Aging Test for more than 10 minutes.

Receive the gray scale pattern from the Pattern Generator.

Using the remote control, set the brightness and contrast to normal position.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (24) on the remote control to select “R.BIAS”.

Press the CH. UP/DOWN button on the remote control to select the “R.BIAS”, “G.BIAS”, “B.BIAS”, “R/G.DRV”, “B/ R.DRV”, “R.BIAS(C)”, “G.BIAS(C)”, “B.BIAS(C)”, “R/ G.DRV(C)”, “B/R.DRV(C)”, “R.BIAS(W)”, “G.BIAS(W)”, “B.BIAS(W)”, “R/G.DRV(W)” or “B/R.DRV(W)”.

Adjust the VOL. UP/DOWN button on the remote control to whiten the R.BIAS(C), G.BIAS(C), B.BIAS(C), R/ G.DRV(C), B/R.DRV(C), R.BIAS(W), G.BIAS(W), B.BIAS(W), R/G.DRV(W) and B/R.DRV(W)”at each step tone sections equally.

Perform the above adjustments 5 and 6 until the white color is looked like a white.

D-1

+ 35 hidden pages