Toshiba 30DF56 Service Manual

FILE NO. 050-200621GR

(MFR’S VERSION A)

SERVICE MANUAL

COLOR TELEVISION

30DF56

The above model is classified as a green product (*1), as indicated by the underlined serial number. This Service Manual describes replacement parts for the green product. When repairing this green product, use the part(s) described in this manual and lead-free solder (*2).

For (*1) and (*2), see the next page.

DOCUMENT CREATED IN JAPAN, June, 2006 GREEN

(*1) GREEN PRODUCT PROCUREMENT

The EC is actively promoting the WEEE & RoHS Directives that define standards for recycling and reuse of Waste Electrical and Electronic Equipment and for the Restriction of the use of certain Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any marketing of new products containing the restricted substances.

Increasing attention is given to issues related to the global environmental. Toshiba Corporation recognizes environmental protection as a key management tasks, and is doing its utmost to enhance and improve the quality and scope of its environmental activities. In line with this, Toshiba proactively promotes Green Procurement, and seeks to purchase and use products, parts and materials that have low environmental impacts.

Green procurement of parts is not only confined to manufacture. The same green parts used in manufacture must also be used as replacement parts.

(*2) LEAD-FREE SOLDER

This product is manufactured using lead-free solder as a part of a movement within the consumer products industry at large to be environmentally responsible. Lead-free solder must be used in the servicing and repair of this product.

WARNING

This product is manufactured using lead free solder .

DO NOT USE LEAD BASED SOLDER TO REPAIR THIS PRODUCT !

The melting temperature of lead-free solder is higher than that of leaded solder by 86°F to 104°F (30°C to 40°C). Use of a soldering iron designed for lead-based solders to repair product made with lead-free solder may result in damage to the component and or PCB being soldered. Great care should be made to ensure high-quality soldering when servicing this product  especially when soldering large components, through-hole pins, and on PCBs  as the level of heat required to melt lead-free solder is high.

A1-1

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

Headphone 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

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

A1-2

TABLE OF CONTENTS

GREEN PRODUCT PROCUREMENT ........................................................................................

LEAD-FREE SOLDER ................................................................................................................

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

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

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

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

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

DISASSEMBLY INSTRUCTIONS

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

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

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

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

RE-WRITE FOR DIGITAL SOFT FIRMWARE...........................................................................

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

BLOCK DIAGRAM

MAICON/CHROMA .................................................................................................................

SD DIGITAL MODULE ............................................................................................................

RINTED CIRCUIT BOARDS

TV MT/FRONT JACK ..............................................................................................................

CRT/VM COIL/AV ....................................................................................................................

DIGITAL ...................................................................................................................................

SCHEMATIC DIAGRAMS

MICON .....................................................................................................................................

CHROMA/IF.............................................................................................................................

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

POWER ...................................................................................................................................

AV SW/SOUND AMP/TONE CTL ...........................................................................................

TUNER.....................................................................................................................................

COMB FILTER.........................................................................................................................

TUNER/REGULATOR .............................................................................................................

CRT/SVM.................................................................................................................................

ASIC.........................................................................................................................................

SDRAM ....................................................................................................................................

FLASH .....................................................................................................................................

FRONT END ............................................................................................................................

AV OUT....................................................................................................................................

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

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

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

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

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

B1-1 B2-1, B2-2 C-1 C-1, C-2 C-3 D-1~D-8

E-1, E-2 E-3, E-4

F-1~F-4 F-5, F-6 F-7, F-8

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-2 I-1~I-3 J1-1, J1-2 J2-1~J2-7

A2-1

GENERAL SPECIFICATIONS

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

G-2 Tuning Broadcasting System Analog US System M

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

G-4 Regulation Safety UL

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

G-6 Operating Humidity Less than 80% RH G-7 OSD Language English French Spanish G-8 Clock and Clock

System CRT Type Flat (16:9)

Color System NTSC Display Capability 480i Speaker 2 Speaker

Sound Output MAX

NTSC3.58+4.43 /PAL60Hz No

System Digital ATSC(8VSB)/QAM

Tuner and System 1Tuner Receive CH Destination USA(W/ CABLE) CH Coverage 2 - 69, 4A, A-5 - A-1,

Intermediate Digital 44.00MHz Frequency Analog Picture(FP) 45.75MHz

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

Power Consumption at AC

Energy Star No Protector Power Fuse Yes

Timer Sleep Timer Max Time 120 Min

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

Magnetic Field BV/BH +0.45G/0.18G

Position Front Size Impedance 8 ohm

10%(Typical)

Sound(FS) 41.25MHz

FP-FS 4.50MHz

Stand by (at AC) Per Year

Safety Circuit Yes IC Protector(Micro Fuse) Yes

Radiation FCC X-Radiation DHHS

Storage -20oC ~ +60oC

Step

1.8 x 3.9 Inch

2.5W+2.5W

-W

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

155 W at AC 120 V 60 Hz 3 W at AC 120 V 60 Hz

-- kWh/Year

Yes

10 Min

A3-1

GENERAL SPECIFICATIONS

G-9 Remote Unit RC-KK

Control Glow in Dark Remocon Yes

Remocon Format TOSHIBA Format TOSHIBA Custom Code Power Source Voltage(D.C) 3V

Total Keys Keys

Multi Brand Keys

UM size x pcs UM-4 x 2 pcs

Power TV/VIDEO Recall Mute 1 2 3 4 5 6 7 8 9 0 100 / +10 CH Return / Ent CH + CH VOL + VOL SLEEP Picture Size UP LEFT / FAV MENU/ENTER/DVD MENU RIGHT / FAV + DOWN EXIT TV CBL/SAT VCR DVD ENTER PAUSE PLAY STOP REW FF SKIP/SEARCH|<< SKIP/SEARCH>>| TOP MENU REC CLEAR TV/VCR

40-BF h

44 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

A3-2

GENERAL SPECIFICATIONS

G-10 Features Picture Brightness, Contrast, Color, Tint, Sharpness Yes

Audio MTS Yes

Tuning TV/CABLE Yes

Label CH Label Yes

Favorite CH Yes Lock Hotel Lock No

Auto Shut Off Yes Auto Setup Yes Power On Memory Yes V-Chip Yes

RRT Yes Image Tilt Yes SVM Circuit Yes Comb Filter Yes

Cable Clear No Cinema Mode No Display Format No Aspect No Closed Caption Yes CC Advance Yes Picture Size Yes Picture Scroll Yes FBT Leak Test Protect Yes Menu=Volume Up+Volume Down Yes POD (Point Of Deployment) No TV Guide (EPG) No Digital Out Dolby Digital Yes

HDMI Input No Component Input Yes

Mode (Picture preference) No Color Temperature No

Tone Control (Bass, Treble, Balance) Yes Surround Yes Stable Sound Yes BBE No SRS WOW(SRS 3D/Focus/Tru Bass) No Variable Audio Out No

CH Program Yes Add/ Delete Yes

Video Label No

Channel Lock Yes Video Lock Yes Panel Lock Yes

Type

MPEG No PCM Yes DTS No

720x480i (4:3) Yes (60Hz) 720x480i (16:9) Yes (60Hz) 720x480p (4:3) No 720x480p (16:9) No 720x576i (4:3) No 720x576i (16:9) No 720x576p (4:3) No 720x576p (16:9) No 1280x720p No 1920x1080i No

USA, ORION Type

3 -Lines

A3-3

GENERAL SPECIFICATIONS

G-11 Accessories Owner's Manual Language English / Spanish

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) Information Sheet(Channel) Yes Information Sheet(RRT) Yes Sheet Information(RETURN)

G-12 Interface Switch Front Power Yes

Indicator Power Yes(RED)

Terminals Front Video Input = VIDEO2

Rear Video Input(Rear1) = VIDEO1

G-13 Set Size Approx. W x D x H (mm) 796 x 563 x 549.2 G-14 Weight Net (Approx.)

W/ Warranty Yes

Poles Terminal

Terminal -

UM size x pcs UM-4 x 2 pcs OEM Brand

Channel Up/Menu Up Yes Channel Down/Menu Down Yes Volume Up/Menu Right Yes Volume Down/Menu Left Yes

Stand-by No On Timer No

Audio Input = VIDEO2 S Input = VIDEO2 No Other Terminal No

Video Input(Rear2) No S Input(Rear1) = VIDEO1 S Input(Rear2) No Audio Input(Rear1) = VIDEO1 Audio Input(Rear2) No Video Output No Audio Output Component Input1(w/ Analog Audio L/R) Component Input2(w/ Analog Audio L/R) No HDMI Input1(w/ Analog Audio L/R) No HDMI Input2(w/ Analog Audio L/R) No Digital Audio Out Cable Card Slot No IR Blaster No VHF/UHF Antenna Input AC Outlet No

Gross (Approx.) 58.0kg

RCA RCA x 2 (L/MONO,R)

RCA

Yes

RCA x 2 (L/MONO,R)

RCA x 2 (L/MONO,R) RCA x 5 (L/MONO,R)

Coaxial x 1

F Type

51.0 kg

No No No No No No No No No No No

No No No

No No No No

( 112.5 lbs) ( 127.9lbs)

A3-4

GENERAL SPECIFICATIONS

G-15 Carton Master Carton

Gift Box Material Double/Brown

Drop Test

Container Stuffing

G-16 Material Cabinet Cabinet Front PS 94V0 DECABROM

PCB Non-Halogen Demand

G-17 Environment Environmental standard requirement (by buyer) Green procurement of TOSHIBA

Pb-free Phase3(Phase3A)

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

Dimensions W x D x H(mm) 916 x 691 x 711 Description of Origin Yes

Height (cm) 40 (ORION SPEC:25)

129

Cabinet Rear PS 94V0 NON-DECABROM

Eyelet Demand Yes

Measures for Whisker Yes

No Sets

/--

Natural Dropping At 1 Corner / 2

Edges / 4 Surfaces

Sets/40' container

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 is 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

VOL. (-) MIN 6

VOL. (-) MIN

Remocon Key

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

NOTE:

Check of the SUM DATA and MICON VERSION on the screen. Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".

Check for the firmware version. 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 normal servicing. If you set factory initialization, the memories are reset such as the channel setting, and the POWER ON total hours.

Operations

WHEN REPLACING EEPROM (MEMORY) IC

CONFIRMATION OF CHECK SUM, POWER ON TOTAL HOURS, MICON VERSION AND DIGITAL TV MICON FIRMWARE VERSION

Initial total of MEMORY IC, POWER ON total hours, MICON VERSION and Digital TV MICON Firmware VERSION 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". Please refer to "CONFIRMATION OF INITIAL DATA" when SUM DATA is not corresponding.

Turn on the POWER, and set to the TV mode. Set the VOLUME to minimum. Press both VOL. DOWN button on the set and Channel button (8) on the remote control for more than 2 seconds. After the confirmation of each check sum, power on total hours, micon version and Digital TV MICON Firmware version, turn off the power.

Digital TV MICON Firmware

MICON Version

Initial setting data check sum.

Rom correction data check sum.

AUDIO External terminal Volume.

CRT ON 0000 OEC7161a_024 DTV d-W64111 INIT 17A1 ROM: -6AD1 VOLUME: 2F3A

FIG. 1

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.

INI +0+1+2+3+4+5+6+7+8+9+A+B+C+D+E+F

C1 AE 0D C5 36 08 02 0A C0 80 07 00 28 36 03 00

68 10 11 11 88 88 16 00 00 00 00 00 00 05 AA 00

ED 00 00 F5 00 04 00 00 00 00 00 00 00 00 00 00

39 C0 07 22 03 03 00 00 00 01 D1 02 B1 13 7F 00

00 00 00 00 00 00 00 40 40 40 0F 40 20 00 C0 40

40 40 00 95 00 14 07 00 63 2F 01 01 00 00 00 00

21 AF 00 00 81 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 11 0A 00 00 00 00 00 00 00 00

6C 70 74 7C 80 84 88 8E 92 96 9A 9E A2 A6 AA AE

B2 B5 B8 BB BD BE BF C0 C0 C1 C1 C2 C3 C4 C5 C6

C7 C8 C9 CA CB CB CC C C C D CE CF D0 D0 D1 D2 D3

D4 D5 D6 D7 D8 D9 DA DA DB DB DB D C D C D C D D D D

00 00 00 00 00 00 00 00 00 00 00 00 29 05 00 00

00 00 00 ED ED 00 09 85 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

00 00 00 00 00 00 AF 00 00 81 00 00 00 00 00 00

100

00 00 00 00 00 00 00 00 00 00 00 11 0A 04 00 00

110

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

120

00 29 05 00 00 00 00 00 ED ED 00 09 85 00 00 00

130

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Table 1

CONFIRMATION OF INITIAL DATA

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.

ADDRESS DATA

INIT 000 C1 CRT ON 0000 OEC7161A_024 DTV d-W64111 INIT 17A1 ROM: -6AD1 VOLUME: 2F3A

FIG. 1

C-2

RE-WRITE FOR DIGITAL SOFT FIRMWARE

JG199JG198 Serial Communication Change JIG

Ref. No.

JG198

JG199

Confirm that the AC cord is plugged out.

1. Using the Serial Communication Change JIG (JG198), connect the set to personal computer. (Refer to Fig. 1)

NOTE: It is possible to write only with the personal computer of WINDOWS.

Part No.

APJG198000

APJG199000

APJG176110JG176

Parts Name

Serial Communication Change JIG

Flash UP-Date Soft Disc USA SD DTV ROM

DISC

Flash UP-Date Soft Disc

Connect the set to personal computer

Up-Date of the Firmware

JG176

USA SD DTV ROM DISC

Remarks

Fig. 1

Using the Flash UP-Date Soft Disc (JG199) and USA SD DTV ROM DISC (JG176), please Re-write the DIGITAL SOFT FIRMWARE. The operating manual for Re-writing is included in Flash UP-Date Soft Disc (JG199).

C-3

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 with a heat sink, apply 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. 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 seconds to appear the adjustment mode on the screen as shown in Fig. 1-1.

TV-A

FULL

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 and YUV mode, press the TV/VIDEO button on the remote control to set to the AV and YUV mode.

To display the adjustment screen for DIGITAL mode, press the Channel button (0-9) on the remote control to select to the DIGITAL broadcasting.

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 OSD C CUT OFF H.POSI H BLK L H BLK R H.SIZE V. SIZE V. POSI V. LIN V CORR VS CORR V EHT H EHT V BLKP V BLKS V LIMIT EW PARA TRAPE COR TOP

NO.

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

FUNCTION

COR BTM S CORR CORNER C PARA C SAW V SYMM R.BIAS G.BIAS B.BIAS R.DRV G.DRV B.DRV BRI.CENT BRI.MAX BRI.MIN CONT.CENT CONT.MAX CONT.MIN COL.CENT COL.MAX

NO.

FUNCTION

COL.MIN

TINT CENT

SHARP.CENT

SHARP.MAX

SHARP.MIN

SUB BIAS

TILT CENTER

TEST STEREO

TEST AUDIO

H FREQ

Fig. 1-2

2. BASIC ADJUSTMENTS

2-1: CONSTANT VOLTAGE

Place the set in AV MODE without signal.

Press the PIC SIZE button on the remote control to select the FULL screen mode.

Connect the digital voltmeter to the TP401.

Adjust the VR501 until the digital voltmeter is 135 ± 0.5V.

2-2: CUT OFF

Press the PIC SIZE button on the remote control to select

1. the FULL screen mode. Adjust the unit to the following setting.

2. R. BAIS=64, G. BIAS=64, B.BIAS=64, R DRIVE=64, G DRIVE=10, B DRIVE=64 Place the set in Aging Test for more than 15 minutes.

3. Place the set in AV MODE without signal.

4. Using the remote control, set the brightness and contrast

5. to normal position. Activate the adjustment mode display of Fig. 1-1 and

6. press the channel button (02) on the remote control to select “CUT OFF”. Adjust the Screen Volume until a dim raster is obtained.

2-3: FOCUS

Press the PIC SIZE button on the remote control to select the FULL screen mode.

Receive the cross hatch signal from the Pattern Generator.

Turn the F1 VR and F2 VR fully clockwise once.

(Refer to Fig. 2-1)

Adjust the F1 VR so that the screen becomes clearest. Then adjust the F2 VR.

Focus VR

F1 VR F2 VR

D-1

SCREEN VR

Fig. 2-1

ELECTRICAL ADJUSTMENTS

2-4: WHITE BALANCE NOTE: Adjust after performing CUT OFF adjustment.

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

Receive the white 100% signal from the Pattern Generator.

Press the PIC SIZE button on the remote control to select the FULL screen mode.

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

Activate the adjustment mode display of Fig. 1-1 and press the channel button (26) on the remote control to select "R.BIAS".

Using the VOL. UP/DOWN button on the remote control, adjust the R.BIAS.

Press the CH. UP/DOWN button on the remote control to select the "G.BIAS", "B.BIAS", "R.DRIVE" or "B.DRIVE".

Using the VOL. UP/DOWN button on the remote control, adjust the G.BIAS, B.BIAS, R.DRIVE and B.DRIVE.

Perform the above adjustments 7 and 8 until the white color is achieved.

2-5: BRIGHT CENT

Receive the monoscope pattern. (RF Input)

Press the PIC SIZE button on the remote control to select the FULL screen mode.

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 (32) on the remote control to select "BRI. CENT".

Press the VOL. UP/DOWN button on the remote control until the white 5.4% is starting to be visible

Receive the monoscope pattern. (Audio Video Input)

Press the TV/VIDEO button on the remote control to set to the AV mode. Then perform the above adjustments 2~5.

Receive the monoscope pattern.

Press the TV/VIDEO button on the remote control to set to the YUV mode.Then perform the above adjustments 2~5.

10.

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

11.

Receive the DIGITAL broadcasting.

12.

Press the Channel button (0-9) on the remote control to select to the DIGITAL broadcasting.

13.

Press the PIC SIZE button on the remote control to select the FULL screen mode.

14.

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

15.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (32) on the remote control to select "BRI. CENT".

16.

Press the VOL. UP/DOWN button on the remote control to increase the step numbers by 10 steps to the AV.

2-6: CONTRAST MAX

Receive an over 70dB color bar pattern. (RF Input)

Press the PIC SIZE button on the remote control to select the FULL screen mode.

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 (36) on the remote control to select "CONT.MAX".

Press the VOL. UP/DOWN button on the remote control until the contrast step No. becomes "110".

Receive a broadcast and check if the picture is normal.

Receive the color bar pattern. (Audio Video Input)

Press the TV/VIDEO button on the remote control to set to the AV mode. Then perform the above adjustments 2~6.

Receive the monoscope pattern.

10.

Press the TV/VIDEO button on the remote control to set to the YUV mode.Then perform the above adjustments 2~6.

11.

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

12.

Receive the DIGITAL broadcasting.

13.

Press the Channel button (0-9) on the remote control to select to the DIGITAL broadcasting.

14.

Press the PIC SIZE button on the remote control to select the FULL screen mode.

15.

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

16.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (36) on the remote control to select "CONT.MAX".

17.

Press the VOL. UP/DOWN button on the remote control to increase the step numbers by 5 steps to the AV.

D-2

ELECTRICAL ADJUSTMENTS

2-7: TINT

Receive the color bar pattern. (RF Input)

Press the PIC SIZE button on the remote control to select the FULL screen mode.

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

Connect the oscilloscope to TP024.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (41) on the remote control to select "TINT CENT".

Press the VOL. UP/DOWN button on the remote control until the section A becomes as straight line.

(Refer to Fig. 2-2)

Receive the color bar pattern. (Audio Video Input)

Press the TV/VIDEO button on the remote control to set to the AV mode. Then perform the above adjustments 2~6. (Refer to Fig. 2-2)

Receive the color bar pattern.

10.

Press the TV/VIDEO button on the remote control to set to the YUV mode.Then perform the above adjustments 2~6. (Refer to Fig. 2-2)

11.

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

12.

Receive the DIGITAL broadcasting.

13.

Press the Channel button (0-9) on the remote control to select to the DIGITAL broadcasting.

14.

Press the PIC SIZE button on the remote control to select the FULL screen mode.

15.

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

16.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (41) on the remote control to select "TINT CENT".

17.

Press the VOL. UP/DOWN button on the remote control until the contrast step No. becomes "63".

2-8: COLOR CENT

Receive the color bar pattern. (RF Input)

1. Press the PIC SIZE button on the remote control to

2. select the FULL screen mode. Using the remote control, set the brightness, contrast,

3. color and tint to normal position. Connect the oscilloscope to TP022.

4. Activate the adjustment mode display of Fig. 1-1 and

5. press the channel button (38) on the remote control to select "COL.CENT". Adjust the VOLTS RANGE VARIABLE knob of the

6. oscilloscope until the range between white 100% and 0% is set to 4 scales on the screen of the oscilloscope. Press the VOL. UP/DOWN button on the remote control

7. until the red color level is adjusted to 105 ± 10% of the white level. (Refer to Fig. 2-3) Receive the color bar pattern. (Audio Video Input)

8. Press the AV mode. Then perform the above

9. adjustments 2~6.(Refer to Fig. 2-3) Receive the color bar pattern.

10. Press the TV/VIDEO button on the remote control to set

11. to the YUV mode.Then perform the above adjustments 2~6. (Refer to Fig. 2-3) Press the MENU button on the remote control to end the

12. adjustments. Receive the DIGITAL broadcasting.

13. Press the Channel button (0-9) on the remote control to

14. select to the DIGITAL broadcasting. Press the PIC SIZE button on the remote control to

15. select the FULL screen mode. Using the remote control, set the brightness, contrast,

16. color and tint to normal position. Activate the adjustment mode display of Fig. 1-1 and

17. press the channel button (38) on the remote control to select "COL.CENT". Press the VOL. UP/DOWN button on the remote

18. control until the contrast step No. becomes "79".

Fig. 2-2

White 100%

D-3

105%

Fig. 2-3

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