Toshiba 27DF47 Schematic

FILE NO. 050-200701GR

(MFR'S VERSION A)

SERVICE MANUAL

COLOR TELEVISION

27DF47

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, February, 2007 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

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...........................................................................

SERVICING FIXTURES AND TOOLS ........................................................................................

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

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

BLOCK DIAGRAMS

MICON/CHROMA .....................................................................................................................

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

PRINTED CIRCUIT BOARDS

TV MT/CRT ...............................................................................................................................

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

SCHEMATIC DIAGRAMS

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

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

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

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

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

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

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

POWER&GROUND ..................................................................................................................

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

FLASH/GPIO.............................................................................................................................

VIF/SIF ......................................................................................................................................

AV IN/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 C-3 D-1~D-6

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

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

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 H-1, H-2 I-1, I-2 J1-1 J2-1~J2-4

A2-1

GENERAL SPECIFICATIONS

+5oC ~ +40oC

-20oC ~ +60oC

Timer Back-up (at Power Off Mode) more than -- Min Sec

G-1 TV

System

G-2 Tuning

System

G-3 Power

G-4 Regulation

G-5 Temperature

G-6 Operating Humidity G-7 OSD Language G-8 Clock and

Timer

CRT CRT Size / Visual Size 27 inch / 676.0mmV

Color System NTSC Display Capability 480i Speaker 2Speaker

Sound Output MAX 1.0 + 1.0

NTSC3.58+4.43 /PAL60Hz No Broadcasting System Analog US System M

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 Source AC 120V AC 60Hz

Power Consumption at AC

Energy Star No Protector Power Fuse Yes

Clock Yes Clock Display 12H Calendar Yes Sleep Timer Max Time 120 Min

On Timer/Off Timer Program No Game Timer No Wake Up Timer No

CRT Type Flat Magnetic Field BV/BH +0.45G/0.18G

Position Front Side Size 2.0 x 4.7 Inch Impedance 8 ohm

10%(Typical) -

Digital ATSC(8VSB)/QAM

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

Sound(FS) 41.25MHz

FP-FS 4.50MHz

110 W at AC 120 V 60 Hz Stand by (at AC) 3 W at AC 120 V 60 Hz Per Year -- kWh/Year

Safety Circuit Yes IC Protector(Micro Fuse) No Safety UL(UL1492) Radiation FCC X-Radiation DHHS Operation Storage

Less than 80% RH

English French Spanish

Step 10 Min

A3-1

GENERAL SPECIFICATIONS

Analog/Digital Yes

G-9 Remote

Control

Unit RC-NH Glow in Dark Remocon No Format Toshiba Remocon Format Toshiba Custom Code 40-BFh Power Source Voltage(D.C) 3V

UM size x pcs UM-4 x 2 pcs

Total Keys 26 Keys Keys Power Yes

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

- Yes CH Up/MENU Cursor Up Yes CH Down/MENU Cursor Down Yes Volume Up/MENU Cursor Right Yes Volume Down/MENU Cursor Left Yes Closed Caption No CH1/CH2 No TV/Video(Input Select) Yes CH RTN(Quick View) Yes Sleep Yes Display(Recall) Yes Reset No Menu/Enter Yes Menu No Enter No Mute Yes Exit Yes Audio Select Yes Favorite CH Up No Favorite CH Down No Picture Size Yes

A3-2

GENERAL SPECIFICATIONS

1920×1080i No

G-10 Features

Picture Brightness, Contrast, Color, Tint, Sharpness Yes

Mode (Picture preference) No Color Temperature No

Audio SAP Yes

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

Tuning TV/CABLE Yes

CH Program Yes Add/ Delete Yes

Label CH Label No

Video Label No Favorite CH No Lock Hotel Lock No

Channel Lock No

Video Lock No

Panel Lock No Auto Shut Off Yes Auto Setup Yes Power On Memory Yes V-Chip Yes

Type USA, ORION Type RRT Yes Image Tilt No SVM Circuit No Comb Filter Yes

3 -D Cable Clear No Cinema Mode No Display Format No Aspect No Closed Caption Yes CC Advance Yes Signal Meter Yes Audio Language Yes Picture Size Yes Zoom Yes Picture Scroll No FBT Leak Test Protect Yes POD (Point Of Deployment) No TV Guide (EPG) No Digital Out Dolby Digital No

MPEG No PCM No

DTS No HDMI Input No Component Input Yes

720×480i (4:3) Yes (60Hz)

720×480i (16:9) Yes (60Hz)

720×480p (4:3) No

720×480p (16:9) No

720×576i (4:3) No

720×576i (16:9) No

720×576p (4:3) No

720×576p (16:9) No

1280×720p No

A3-3

GENERAL SPECIFICATIONS

Information Sheet(RRT)

AC Outlet No

G-11 Accessories

Owner's Manual Language English / Spanish

W/ Warranty Yes Remote Control Unit Yes Rod Antenna

Poles

Terminal Loop Antenna

Terminal 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

UM size x pcs UM-4 x 2 pcs

OEM Brand 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(RETURN) Information Sheet(Channel)

G-12 Interface

Switch Front Power Yes

Channel Up/Menu Up Yes

Channel Down/Menu Down Yes

Volume Up/Menu Right Yes

Volume Down/Menu Left Yes

Menu=Volume Up+Volume Down Yes Indicator Power Yes(RED)

Stand-by No

On Timer No Terminals Front Video Input = VIDEO2

Audio Input = VIDEO2

S Input No

Other Terminal No

Rear Video Input(Rear1) = VIDEO1

Video Input(Rear2) = VIDEO3 No

S Input = VIDEO1

S Input = VIDEO3 No

Audio Input(Rear1) = VIDEO1

Audio Input(Rear2) = VIDEO3/Component No

Video Output No

Audio Output

Component Input1(Color Stream)

Component Input2(Color Stream) No

HDMI Input1(w/ Analog Audio L/R) No

HDMI Input2(w/ Analog Audio L/R) No

Digital Audio Out No

Cable Card Slot No

IR Blaster No

VHF/UHF Antenna Input

RCA RCA x 2 (L/MONO,R)

RCA

Yes

RCA x 2 (L/MONO,R)

RCA x 2(L,R) RCA x 3

F Type

A3-4

GENERAL SPECIFICATIONS

( 88.2lbs)

( 102.5lbs)

Sets

/--

Surfaces

Sets/40' container

Measures for Whisker Yes

G-13 Set Size G-14 Weight

G-15 Carton

G-16 Material

G-17 Environment

Approx. W x D x H (mm) 740 x 495 x 574.5 Net (Approx.) 40.0 kg Gross (Approx.) 46.5 kg

Master Carton

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

Gift Box Material Double/Brown

Dimensions W x D x H(mm) 850 x 620 x 665 Description of Origin Yes

Drop Test

Height (cm) 40 (ORION SPEC:25)

Container Stuffing 156 Cabinet Cabinet Front PS 94V0 DECABROM

Cabinet Rear PS 94V0 DECABROM

PCB Non-Halogen Demand

Eyelet Demand Yes

Environmental standard requirement Green procurement of Toshiba Pb- Free Phase3(PHASE3A)

Natural Dropping At 1 Corner / 2 Edges / 4

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 to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit or on the main unit and on the remote control for more than a standard time in the appropriate condition. (See below chart.) In case of the main unit and remote control, press the remote control buttons first, then press the main unit buttons.

Set

Condition

POWER ON

Set Key Operations

VOL. DOWN

(Minimum)

VOL. DOWN

(Minimum)

VOL. DOWN

(Minimum)

VOL. DOWN

(Minimum)

VOL. DOWN

(Minimum)

Remocon

Key

0 2 sec.

1 2 sec.

6 2 sec.

9 2 sec.

Standard

Time

2 sec.

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

NOTE:

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

Check of the SUM DATA, MICON VERSION, POWER ON total hours and Digital TV MICON Firmware on the screen. 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).

If you set factory initialization, the memories are reset such as the channel setting, and the POWER ON total hours.

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, Digital TV MICON Firmware and MICON VERSION, turn off the power.

NOTE:

The each item value might be different according to each set.

ADDRESS DATA

CRT ON 0000

MICON Version

Digital TV MICON Firmware

Initial setting data check sum.

Rom correction data check sum.

OEC7174A_23 DTV CTT71222 INIT 26B2 ROM: 43EB

FIG. 1

C-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)

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.

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

00 43 00 00 20 09 B 3 24 0D 4B 80 00 A 0 F A 00 00 00 10 00 00 00 65 4E 34 10 A1 00 00 00 00 60 00 10 8C 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 30 88 00 00 00 00 09 72 05 05 00 00 00 87 03 C 8 22 40 02 33 00 00 04 23 2D 20 00 40 20 40 40 40 00 00 50 00 64 00 00 00 00 00 00 0A 45 A0 00 FF 01 00 00 60 00 88 00 00 00 00 00 00 00 00 00 00 00 00 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 00 00 00 00 00 00 00 00 00 03 00 00 00 00 00 00

90 00 00 00 00 00 00 00 00 00 00 00 05 9D 01 00 84 A 0 04 11 00 00 00 05 00 01 00 00 00 05 12 13 05 82 B 0 01 00 00 00 00 04 00 04 00 02 00 00 00 00 00 00 C0 08 24 2F 33 37 38 39 3A 3B 3C 3C 3D 3F 40 40 41 D0 42 44 45 46 47 48 49 4A 4B 4C 4C 4D 4E 4F 50 50 E 0 51 52 53 53 54 54 55 55 57 58 5A 5B 5C 5D 5E 5F F0 61 62 64 66 68 6E 73 78 7D 82 86 8A 8E 8E 8F 8F

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 2.

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

Press VOL. UP/DOWN button to select DATA. When DATA is selected, it will "blink".

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

Pressing VOL. UP/DOWN 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 on the Power.

10.

Set the VOLUME to minimum.

11.

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

12.

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 00 43 CRT ON 0000 OEC7174A_23 DTV CTT71222 INIT 26B2 ROM: 43EB

FIG. 2

C-2

SERVICING FIXTURES AND TOOLS

Serial Communication Change JIG

Ref. No.

JG205

JG206

Part No.

APJG205000

APJG206000

APJG176125JG176

JG206JG205

Parts Name

Serial Communication Change JIG

Flash UP-Date Soft Disc

2007 SD DTV Rom Disc

Flash UP-Date Soft Disc

JG176

Connect the set to personal computer

Up-Date of the Firmware

Up-Date of the DIGITAL Firmware

2007 SD DTV Rom Disc

Remarks

RE-WRITE FOR DIGITAL SOFT FIRMWARE

Confirm that the AC cord is plugged out.

1. Using the Serial Communication Change JIG (JG205), connect the set to personal computer. (Refer to Fig. 1)

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

Fig. 1

Using the Flash UP-Date Soft Disc (JG206) 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 (JG206).

C-3

+ 33 hidden pages