Toshiba MD13M1 Schematic

SERVICE MANUAL

COLOR TELEVISION/ DVD VIDEO PLAYER

FILE NO. 140-200215

MD13M1

CAUTION

THIS DIGITAL VIDEO PLAYER EMPLOYS A LASER SYSTEM. TO ENSURE PROPER USE OF THIS PRODUCT, PLEASE READ THIS SERVICE MANUAL CARE-

FULLY AND RETAIN FOR FUTURE REFERENCE. SHOULD THE UNIT REQUIRE MAINTENANCE, CONTACT AN AUTHORIZED SERVICE LOCATION-SEE SERVICE PROCEDURE.

USE OF CONTROLS, ADJUSTMENTS OR THE PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

TO PREVENT DIRECT EXPOSURE TO LASER BEAM, DO NOT TRY TO OPEN THE ENCLOSURE. VISIBLE LASER RADIA TION MAY BE PRESENT WHEN THE ENCLOSURE IS OPENED. DO NOT ST ARE INTO BEAM.

Location of the required Marking

The rating sheet and the safety caution are on the rear of the unit.

CERTIFICATION: COMPLIES WITH FDA RADIATION PERFORMANCE STANDARDS, 21 CFR SUBCHAPTER J.

A1-1

IMPORTANT SAFEGUARDS

READ INSTRUCTIONS

All the safety and operating instructions should be read before the unit is operated.

RETAIN INSTRUCTIONS

The safety and operating instructions should be retained for future reference.

HEED WARNINGS

All warnings on the unit and in the operating instructions should be adhered to.

FOLLOW INSTRUCTIONS

All operating and use instructions should be followed.

CLEANING

Unplug this unit from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.

ATTACHMENTS

Do not use attachments not recommended by the unit’s manufacturer as they may cause hazards.

WATER AND MOISTURE

Do not use this unit near water. For example, near a bathtub, washbowl, kitchen sink, or laundry tub, in a wet basement, or near a swimming pool.

ACCESSORIES

Do not place this unit on an unstable cart, stand, tripod, bracket, or table. The unit may fall, causing serious injury, and serious damage to the unit. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer.

8A.

An appliance and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn.

VENTILATION

Slots and openings in the cabinet and in the back or bottom are provided for ventilation, to ensure reliable operation of the unit, and to protect it from overheating. These openings must not be blocked or covered. The openings should never be blocked by placing the unit on a bed, sofa, rug, or other similar surface. This unit should never be placed near or over a radiator or heat source. This unit should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer’s instructions have been adhered to.

10.

POWER SOURCES

This unit should be operated only from the type of power source indicated on the rating plate. If you are not sure of the type of power supply to your home, consult your appliance dealer or local power company. For units intended to operate from battery power, or other sources, refer to the operating instructions.

11.

GROUNDING OR POLARIZATION

This unit is equipped with a polarized alternating-current line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug. If your unit is equipped with a 3-wire grounding-type plug, a plug having a third (grounding) pin, this plug will only fit into a grounding-type power outlet. This too, is a safety feature. If you are unable to insert the plug into the outlet, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the grounding-type plug.

12.

POWER-CORD PROTECTION

Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance.

13.

LIGHTNING

To protect your unit from a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the unit due to lightning and power line surges.

14.

POWER LINES

An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits, as contact with them might be fatal.

15.

OVERLOADING

Do not overload wall outlets and extension cords, as this can result in a risk of fire or electric shock.

16.

OBJECT AND LIQUID ENTRY

Do not push objects through any openings in this unit, as they may touch dangerous voltage points or short out parts that could result in fire or electric shock. Never spill or spray any type of liquid into the unit.

17.

OUTDOOR ANTENNA GROUNDING

If an outside antenna or cable system is connected to the unit, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built-up static charges. Section 810 of the National Electrical Code, ANSI/NFPA 70, provides information with respect to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna discharge unit, connection to grounding electrodes, and requirements for the grounding electrode.

18.

SERVICING

Do not attempt to service this unit yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel.

PORT ABLE CAR T WARNING

(symbol provided by RETAC)

S3126A

A1-2

IMPORTANT SAFEGUARDS (CONTINUED)

DAMAGE REQUIRING SERVICE

19.

Unplug this unit from the wall outlet and refer servicing to qualified service personnel under the following conditions:

When the power-supply cord or plug is damaged.

If liquid has been spilled, or objects have fallen into the unit.

If the unit has been exposed to rain or water.

If the unit does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions, as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the unit to its normal operation.

If the unit has been dropped or the cabinet has been damaged.

When the unit exhibits a distinct change in performance, this indicates a need for service.

REPLACEMENT PARTS

20.

When replacement parts are required, be sure the service technician uses replacement parts specified by the manufacturer or those that have the same characteristics as the original parts. Unauthorized substitutions may result in fire, electric shock or other hazards.

SAFETY CHECK

21.

Upon completion of any service or repairs to this unit, ask the service technician to perform safety checks to determine that the unit is in proper operating condition.

WALL OR CEILING MOUNTING

22.

The product should be mounted to a wall or ceiling only as recommended by the manufacturer.

HEAT

23.

The product should be situated away from heat sources such as radiators, heat registers, stoves, or other products (including amplifiers) that produce heat.

DISC TRAY

24.

Keep your fingers well clear of the disc tray as it is closing. It may cause serious personal injury.

CONNECTING

25.

When you connect the product to other equipment, turn off the power and unplug all of the equipment from the wall outlet. Failure to do so may cause an electric shock and serious personal injury. Read the owner's manual of the other equipment carefully and follow the instructions when making any connections.

SOUND VOLUME

26.

Reduce the volume to the minimum level before you turn on the product. Otherwise, sudden high volume sound may cause hearing or speaker damage.

SOUND DISTORTION

27.

Do not allow the product output distorted sound for a longtime. It may cause speaker overheating and fire.

HEADPHONES

28.

When you use the headphones, keep the volume at a moderate level. If you use the headphones continuously with high volume sound, it may cause hearing damage.

LEASER BEAM

29.

Do not look into the opening of the disc tray or ventilation opening of the product to see the source of the laser beam. It may cause sight damage.

DISC

30.

Do not use a cracked, deformed, or repaired disc. These discs are easily broken and may cause serious personal injury and product malfunction.

NOTE TO CATV SYSTEM INSTALLER

31.

This reminder is provided to call the CATV system installer’s attention to Article 820-40 of the NEC that provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical.

EXAMPLE OF ANTENNA GROUNDING AS PER THE NATIONAL ELECTRICAL CODE

GROUND CLAMP

ELECTRIC SERVICE

EQUIPMENT

NEC-NATIONAL ELECTRICAL CODE

S2898A

ANTENNA LEAD IN WIRE

ANTENNA DISCHARGE UNIT (NEC SECTION 810-20)

GROUNDING CONDUCTORS (NEC SECTION 810-21)

GROUND CLAMPS POWER SERVICE GROUNDING ELECTRODE SYSTEM

(NEC ART 250, PART H)

A1-3

DISC REMOVAL METHOD AT NO POWER SUPPLY

1.2.Remove the Back Cabinet and Power PCB/DVD Block. (Refer to item 1 of the DISASSEMBLY

INSTRUCTIONS.)

Rotate the black gear of Deck CD section in the direction of the arrow by hand, remove the disc from Deck CD. (Refer to Fig. 1)

Deck CDGear (Black)

Fig. 1

A1-4

TABLE OF CONTENTS

CAUTION ................................................................................................................................

IMPORTANT SAFEGUARDS.................................................................................................

DISC REMOVAL METHOD AT NO POWER SUPPLY...........................................................

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

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

DISASSEMBLY INSTRUCTIONS

1.REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS ............................................

2.REMOVAL OF ANODE CAP ............................................................................................

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

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

CONFIRMATION OF USING HOURS.....................................................................................

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

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

BLOCK DIAGRAMS

DVD FRONT/BACK END.....................................................................................................

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

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

PRINTED CIRCUIT BOARDS

DVD......................................................................................................................................

AV/CRT ................................................................................................................................

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

SCHEMATIC DIAGRAMS

MPEG...................................................................................................................................

MEMORY .............................................................................................................................

SYSCON1 ............................................................................................................................

DSP......................................................................................................................................

MOTOR DRIVE ....................................................................................................................

READ CHANNEL .................................................................................................................

AUDIO/VIDEO .....................................................................................................................

REGULATOR.......................................................................................................................

MICON/TUNER ....................................................................................................................

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

SOUND AMP .......................................................................................................................

I/O ........................................................................................................................................

AV SW .................................................................................................................................

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

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

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

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

INTERCONNECTION DIAGRAM ............................................................................................

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

MECHANICAL EXPLODED VIEW ..........................................................................................

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

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

A1-1 A1-2, A1-3 A1-4 A2-1 A3-1~A3-6

B1-1, B1-2 B2-1 B3-1, B3-2 C-1 C-2 C-2 D1~D6

E-1, E-2 E-3, E-4 E-5, E-6

F-1, F-2 F-3~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 G-29, G-30 G-31, G-32 G-33, G-34 G-35, G-36 H-1~H-3 I-1, I-2 J1-1 J2-1~J2-6

A2-1

GENERAL SPECIFICATIONS

G-1 TV CRT CRT Size / Visual Size 13 inch / 335.4 mmV

System CRT Type Normal

Color System NTSC Speaker 2 Speaker

Sound Output Max 1.5W + 1.5W

G-2 DVD System Color System NTSC

Disc DVD, CD-DA, CD-R/RW, Video CD Disc Diameter Deck Disc Loading System Front Loading

Pick up 1-Lens 2-Beams System Playback time(Max) DVD 1-Layer 135min (4.7GB)

Search speed Fwd 2-20 times / 4 step

Slow speed Fwd 1/7-1/2 times

G-3 Tuning Broadcasting System US System M

System Tuner and System 1Tuner

Receive CH Destination US(w/CATV)

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

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

G-4 Signal Video Signal Input Level 1 V p-p/75 ohm

RGB Signal Output Level Audio Signal Input Level -8.0dBm/50k ohm

G-5 Power Power Source AC 120V, 60Hz

Power Consumption at AC 75W at 120V 60Hz

Protector Power Fuse Yes

G-6 Regulation Safety UL

G-7 Temperature Operation +5oC ~ +40oC G-8 Operating Humidity Less than 80% RH

Deflection 90 degree Magnetic Field BV/BH +0.45G / 0.18G

Position Front Size 3 inch Impedance 8 ohm

10%(Typical) 1.0W + 1.0W

120 mm , 80 mm

Motor 3 Motors

DVD 2-Layer 245min (8.5GB) CD 74min Video CD 74min

Actual 2-45 times (DVD, Video CD)

Actual -Actual --

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

CH Coverage

FP-FS 4.50MHz

Output Level 1 V p-p/75 ohm S/N Ratio (Weighted) 65dB Horizontal Resolution at DVD Mode 400 Lines (TV Monitor)

Output Level -8.0dBm/1k ohm Digital Output Level 0.5 V p-p/75 ohm S/N Ratio at DVD (Weighted) 90 dB Harmonic Distortion 0.01% (1kHz) Frequency Response : at DVD 4Hz - 22kHz

at Video CD 4Hz - 20kHz

at CD 4Hz - 20kHz

DC --

at DC -Stand by (at AC) 5 W at 120V 60Hz Per Year -- kWh/Year

Radiation FCC X-Radiation DHHS Laser DHHS

Storage -20oC ~ +60oC

Rev 2-20 times / 4 step

Rev 1/7-1/2 times

2~69, 4A, A-5~A-1, A~I, J~W, W+1~W+84

500 Lines ( Video Out)

4-40 times (CD)

A3-1

GENERAL SPECIFICATIONS

G-9 On Screen Menu(TV) Yes

Display Menu Type Icon

Clock No Clock Set No On/Off Timer No Sleep Timer Yes CH/AV/DVD Yes Stereo/Audio Output Yes

Caption / Text Yes Auto Search/Position No Game Yes Volume Yes Muting No

Picture Yes

Sound Yes

CH Yes

Option Yes

Brightness Yes Contrast Yes Color Yes Tint Yes Sharpness Yes

Bass Yes Treble Yes Balance Yes

TV/CATV Add/Delete Auto CH Memory

V-Chip Yes Language Yes

Bilingal No SAP Yes

Yes Yes Yes

A3-2

GENERAL SPECIFICATIONS

G-10 On Screen Menu (DVD) Yes

Display Menu Type Character

G-11 OSD Language (TV) Eng, Fre, Spa

(DVD) Eng, Fre, Spa

Language Yes

Menu Yes SubTitle Yes Audio Yes

Picture Yes

TV Screen Size Yes OSD Display On/Off Yes

Sound Yes

DRC (Dynamic Range Control) Yes dts Decode No Output(5.1ch/ 2ch) No Surround On/Off No Center On/Off No Sub Woofer On/Off No

Parental Yes

Password Lock/ Un Lock Yes Rating Level Yes

Other Yes

OSD Language(Set up Language) Yes Output(RGB/Composite) No

Open Yes Close Yes No disc Yes Reading Yes Play Yes Still/Pause Yes Stop Yes Prohibit Mark Yes Step Yes Next Yes Back Yes Random Yes (CD, Video CD) Repeat Yes Slow+ ## Yes Slow- ## Yes Search+ ## Yes Search- ## Yes Jump Yes Resume Yes Title No. Yes Chapter No. Yes Track No. Yes Time Yes Sub Title No. Yes Angle No. Yes Vocal On/Off Yes Audio No. Yes Audio Stereo L/R Yes (Video CD) Zoom Yes Marker No. Yes Program Play Back Yes (CD, Video CD) Surround On/Off No Screen Saver No MP3 File Name No

File No No

Time No

Track No No

A3-3

GENERAL SPECIFICATIONS

G-12 Remote Unit RC-EF

Control Glow in Dark Remocon Yes

G-13 Features CATV Yes

Format NEC Custom Code 71-8E h Power Source Voltage(D.C) 3V

UM size x pcs UM-4 x 2 pcs

Total Keys 45 Key Keys Power Yes

1 Yes 2 Yes 3 Yes 4 Yes 5 Yes 6 Yes 7 Yes 8 Yes 9 Yes 0 Yes Play Yes Stop Yes Search+ Yes Search- Yes Skip+ Yes Skip- Yes Slow+ Yes Slow- Yes Pause Yes Call Yes TV/DVD Yes Cancel Yes Audio Select Yes Angle Yes Subtitle Yes Top Menu Yes Set up/ Menu Yes DVD Menu Yes Return Yes Up/ Set+/ CH Up Yes Down/ Set-/ CH Down Yes Left/ Select- Yes Right/ Select+ Yes Select/ Enter Yes Play Mode Yes Closed Caption Yes Input Select Yes Volume+ Yes Volume- Yes Repeat A-B Yes Zoom/ Quick View Yes Sleep Yes Jump Yes Game Yes

Auto Shut Off Yes Auto Clock No Just Clock No Auto CH Memory Yes V-Chip USA V-chip Yes

CANADA V-chip No

Auto Search No SAP Yes Game Position Yes FM Transmitter No Energy Star No Closed Caption Yes Comb Filter No Protect of FBT Leak Circuit Yes Choke Coil No Power On Memory No Parental Lock (DVD Only) Yes Video CD Playback Yes MP3 Playback No Digital Out (Dolby Digtal) Yes

(MPEG) Yes (PCM) Yes (DTS) Yes

Down Mix Out (Dolby Digtal) Yes

(DTS) No

Surround (Spatializer N-2-2) No Screen Saver No

A3-4

GENERAL SPECIFICATIONS

G-14 Accessories Owner's Manual Language English

Remote Control Unit Yes Battery Yes

Rod Antenna No

Loop Antenna No U/V Mixer No

300 ohm to 75 ohm Antenna Adapter Yes Anntena Change Plug No Guarantee Card No Registration Card Yes Warranty Card No ESP Card No Service Station List No DC Car Cord (Center+) No Columbia Offer Sheet No

G-15 Interface Switch Front Power (Tact) Yes

Rear Main Power SW No

Indicator Power Red

Fluorescent Indicator DVD Yes No

Terminals Front Video Input RCA x 1

Rear Video Input RCA x 1

G-16 Set Size Approx. W x D x H (mm) 362x365x382 G-17 Weight Net (Approx.) 11.0kg (24.3lbs)

w/Guarantee Card Yes

UM size x pcs UM-4 x 2 pcs OEM Brand No

Poles No Terminal --

Terminal --

Channel Up Yes Channel Down Yes Volume Up Yes Volume Down Yes Play Yes Open/Close Yes Skip(>>) Yes Skip(<<) Yes Still/Pause No Stop Yes Main Power SW No

Stand-by No On Timer No

Pause Yes No Track Yes No

-B Yes No VIDEO Yes No CD Yes No Play Yes No ALL Yes No PROG Yes No Mic Mark Yes No Title Yes No Repeat Yes No PBC Yes No Angle Yes No Chapter Yes No A Yes No

Music Calender(1-14,Play) Yes No

7-seg Digit(9) Yes No Audio Input RCA x 2(Stereo)

Other Terminal Head Phone Audio Input RCA x 2(Stereo)

Video Output RCA x 1 Audio Output RCA x 2(Stereo) Digital Audio Output Coaxial (DVD Only) Diversity No DC Jack 12V(Center +) No VHF/UHF Antenna Input F Type

Gross (Approx.) 12.5kg (27.6lbs)

A3-5

GENERAL SPECIFICATIONS

G-18 Carton Master Carton No

Gift Box Yes

Drop Test Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces

Container Stuffing (40' container) 700 Sets

G-19 Cabinet Material Cabinet Front PS 94V0 DECABROM

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

Material Double/White W/Color Phote Label No Dimensions W x D x H(mm) 423x460x443 Design As Per Buyer 's Description of Origin Yes

Height (cm) 62

Cabinet Rear PS 94V0

A3-6

DISASSEMBLY INSTRUCTIONS

1. REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS

1-1: BACK CABINET (Refer to Fig. 1-1)

Remove the 5 screws 1.

Remove the screw 2 which are used for holding the Back Cabinet.

Remove the AC cord from the AC cord hook 3.

Remove the Back Cabinet in the direction of arrow.

Front Cabinet

1-2: CRT PCB (Refer to Fig. 1-2) CAUTION: BEFORE REMOVING THE ANODE CAP,

DISCHARGE ELECTRICITY BECAUSE IT CONTAINS HIGH VOLTAGE. BEFORE ATTEMPTING TO REMOVE OR REPAIR ANY PCB, UNPLUG THE POWER CORD FROM THE AC SOURCE.

Remove the Anode Cap. (Refer to REMOVAL OF ANODE CAP)

Disconnect the following connector: (CP805).

Remove the CRT PCB in the direction of arrow.

Front Cabinet

Back Cabinet

Fig. 1-1

CRT PCB

1-3: POWER PCB/DVD BLOCK (Refer to Fig. 1-3)

Remove the 2 screws 1.

Disconnect the following connectors: (CP301, CP302 and CP401).

Remove the POWER PCB/DVD Block in the direction of arrow.

Front Cabinet

Power PCB/DVD Block

Fig. 1-3

1-4: POWER PCB (Refer to Fig. 1-4)

Remove the 11 screws 1.

Remove the Top Shield in the direction of arrow (A).

Disconnect the following connectors: (CP3802 and CP3803).

Remove the screw 2.

Remove the PCB Cover Ass'y in the direction of arrow (B).

Remove the screw 3.

Remove the Power PCB in the direction of arrow (C).

Power PCB

PCB Cover Ass'y

(A)

(C)

(B)

Fig. 1-2

Fig. 1-4

B1-1

DISASSEMBLY INSTRUCTIONS

1-5: AV PCB/DVD PCB/DECK CD (Refer to Fig. 1-5)

Make the short circuit on the position as shown Fig. 1-5 using a soldering. If you remove the Deck CD with no soldering, the Laser may be damaged.

Disconnect the following connectors: (CP8001 and CP8002).

Remove the 4 screws 1.

Remove the Deck Angle in the direction of arrow (A).

Disconnect the following connectors: (CP2301, CP2302 and CP2601).

Remove the 4 screws 2.

Remove the Deck CD in the direction of arrow (B).

Remove the 4 screws 3.

Remove the DVD PCB in the direction of arrow (C).

10.

Remove the 3 screws 4.

11.

Remove the AV PCB in the direction of arrow (D).

Pick Up PCB

Deck CD

AV PCB

(B)

(C)

(A)

(D)

Bottom Plate

Make the sort circuit using a soldering.

DVD PCB

Deck Angle

Fig. 1-5

NOTE

When the installation of the Deck CD, remove all the soldering on the short circuit position after the connection of Pick Up PCB and DVD PCB connector.

B1-2

DISASSEMBLY INSTRUCTIONS

2. 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. 2-1.)

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. 2-3.)

NOTE

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

Location of Anode Cap

Fig. 2-3

Screwdriver

Alligator Clip

GND on the CRT

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

2. the arrow and remove one side of the support.

(Refer to Fig. 2-2.)

Rubber Cap

Support

CRT

Fig. 2-1

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. 2-4.)

Fig. 2-4

4. Insert one end of the Anode Support into the anode button, then the other as shown in Fig. 2-5.

CRT

Support

Fig. 2-2

Support

CRT

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

B2-1

Fig. 2-5

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. 3-1.) 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. 3-3.)

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. 3-2.)

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. 3-1

Tweezers

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

5. Shield Wire. (Refer to Fig. 3-4.)

NOTE

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

Fig. 3-3

Braided Shield Wire

Soldering Iron

Fig. 3-2

IC pattern

Fig. 3-4

B3-1

DISASSEMBLY INSTRUCTIONS

INSTALLATION

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

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

(Refer to Fig. 3-5.)

Soldering Iron

Solder temporarily

Supply the solder from the upper position of IC leads

Solder temporarily

sliding to the lower position of the IC leads. (Refer to Fig. 3-6.)

Fig. 3-5

When bridge-soldering between terminals and/or the

4. soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 3-8.)

Thin-tip Soldering Iron

Fig. 3-8

Finally, confirm the soldering status on four sides of the

5. IC 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, be always sure to replace the IC in this case.

Soldering IronSolder

Absorb the solder left on the lead using the Braided

Supply soldering from upper position to lower position

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

NOTE

Do not absorb the solder to excess.

Soldering Iron

Braided Shield Wire

Fig. 3-6

Fig. 3-7

B3-2

SERVICE MODE LIST

This unit 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 and on the remote

control for more than a standard time (second).

Set Key

VOL. (-) MIN

VOL. (-) MIN 1

VOL. (-) MIN 4

VOL. (-) MIN 6

VOL. (-) MIN 8

Standard Time

(seconds)

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

NOTE:

Initialization of the factory on DVD. NOTE: Do not use this for the normal servicing.

POWER ON total hours and PLAY/REC total hours are displayed on the screen. Refer to the "PREVENTIVE CHECKS AND SERVICE INTERVALS" (CONFIRMATION OF HOURS USED).

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

Writing of EEPROM initial data. NOTE: Do not use this for the normal servicing.

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.

The function will only work without the setting of DVD disc at DVD mode. While pressing the Remocon Key for more than the Standard Time, press the Set Key simultaneously.

OperationsRemocon Key

VOL. (-) MIN 9

STOP 7 3

Display of the Adjustment MENU on the screen.

Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).

Releasing of PARENTAL LOCK. Refer to the “PARENTAL CONTROL - RATING LEVEL”. NOTE:

The function will only work without the setting of DVD disc at DVD mode.

C-1

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 1 second.

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

ADDRESS DATA

INIT 00 FA CRT ON 0010

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)

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.

Note: No need setting for the position of the mark @ due to the adjustment value.

INI

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

FA 43 0F 05 F1 B7 27 D7 03 CD

00 DA BF BF C0 60 62

64 67 69 2A 6B 6C 6D 6E 6F10 26 70 71 52 72 53 73 54 55 75 75 56 56 76 76 5720 74 57 77 77 58 58 78 78 59 79 79 5A 5A 7A 7A 5B30 59 5B 7B 7B 5C 5C 7C

7C 5D 7D 7D 5E 5E 7E 7E 5F40 5D 5F 5F 7F 7F @ @

@ @@@@@@@@50 @ @ @ @ @ @ @ @ @@@@@@@@60 @ @ 10 76 53 0A 55 82 --- --- --- --- --- --- --- ---70 --- --- --- --- --- --- ---

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 1 second. ADDRESS and DATA should appear as FIG 1.

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

Press ENTER to select DATA. When DATA is selected, it will "blink".

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

Pressing ENTER 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.

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

C-2

ELECTRICAL ADJUSTMENTS

BEFORE MAKING ELECTRICAL ADJUSTMENTS

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. AC Voltmeter

4. Pattern Generator

5. Multi-Sound Signal Generator

NO.

FUNCTION

R CUT OFF

G CUT OFF

B CUT OFF

G DRIVE

B DRIVE

BRIGHTNESS(CENT.)

BRIGHTNESS(MAX)

BRIGHTNESS(MIN)

COLOR(CENT.)

COLOR(MAX)

COLOR(MIN)

TINT

SUB CONTRAST

CONTRAST(CENT.)

CONTRAST(MAX)

CONTRAST(MIN)

SHARPNESS

RGB CONTRAST

H POSITION

V POSITION

V SIZE

V LINEARITY

V S CORRECTION

EW PARABOLA CORR.

EW TRAPEZIUM CORR.

H SIZE

V EHT

H EHT

RF AGC

V CENTERING

CORNER CORR. TOP

CORNER CORR. BTM

OSD H

FM LEVEL

TEST PWM

TEST TONE CONTROL

FUNCTION

NO.

BRI. AV(CENT.)

BRI. AV(MAX)

BRI. AV(MIN)

COL. AV(CENT.)

COL. AV(MAX)

COL. AV(MIN)

TINT AV

SUB CONTRAST AV

CONT. AV(CENT.)

CONT. AV(MAX)

CONT. AV(MIN)

SHARPNESS AV

BRI. DVD(CENT.)

BRI. DVD(MAX)

BRI. DVD(MIN)

COL. DVD(CENT.)

COL. DVD(MAX)

COL. DVD(MIN)

TINT DVD

SUB CONTRAST DVD

CONT. DVD(CENT.)

CONT. DVD(MAX)

CONT. DVD(MIN)

SHARPNESS DVD

BRI. GAME(CENT.)

BRI. GAME(MAX)

BRI. GAME(MIN)

CONT. GAME(CENT.)

CONT. GAME(MAX)

CONT. GAME(MIN)

TUNING V MUTE

POWER ON V MUTE

INPUT LEVEL

SEPARATION L

SEPARATION H

CUT OFF

Fig. 1-2

On-Screen Display Adjustment

In the condition of NO indication on the screen.

1. Press the VOL. DOWN button on the set and the Channel button (9) on the remote control for more than 1 second to appear the adjustment mode on the screen as shown in Fig. 1-1.

Function Step No.

Use the Channel UP/DOWN button or Channel button

01 RCUT 7D

(1-0) 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.

Fig. 1-1

2. BASIC ADJUSTMENTS

2-1: CONSTANT VOLTAGE

Set condition is AV MODE without signal.

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

2. to normal position. Connect the digital voltmeter to TP3801.

3. Adjust the VR3800 until the digital voltmeter is 135 ± 0.5V.

2-2: RF AGC

Receive the VHF HIGH (63dB).

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

Connect the digital voltmeter between the pin 5 of CP101 and the pin 1 of CP101.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (29) on the remote control to select "AGC".

Press the RIGHT/LEFT button on the remote control until the digital voltmeter is 2.6 ± 0.05V.

2-3: FOCUS

Receive the monoscope pattern.

Turn the Focus Volume fully counterclockwise once.

Adjust the Focus Volume until picture is distinct.

2-4: CUT OFF

Adjust the unit to the following settings. R CUT=7F, G CUT=7F, B CUT=7F, G DRV=3F, B DRV=3F

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 (72) on the remote control to select "CUT OFF".

Adjust the Screen Volume until a dim raster is obtained.

D-1

ELECTRICAL ADJUSTMENTS

2-5: WHITE BALANCE NOTE: Adjust after performing CUT OFF adjustment.

Place the set with Aging Test for more than 15 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 (04) on the remote control to select "G DRV".

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

Adjust the RIGHT/LEFT button on the remote control to whiten the R CUT, G CUT, B CUT, G DRV, and B DRV at each step tone sections equally.

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

2-6: HORIZONTAL POSITION

Receive the monoscope pattern.

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 (19) on the remote control to select "HPOSI".

Press the RIGHT/LEFT button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum.

2-7: VERTICAL POSITION

Receive the monoscope pattern.

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

Adjust the VR402 until the horizontal line becomes fit to the notch of the shadow mask.

2-8: VERTICAL SIZE

Receive the monoscope pattern.

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 (21) on the remote control to select "VSIZE".

Press the RIGHT/LEFT button on the remote control until the Up/Down OVER SCAN Quantity becomes equal to the Right/Left OVER SCAN Quantity.

2-9: VERTICAL LINEARITY NOTE: Adjust after performing adjustments in section 2-8.

After the adjustment of Vertical Linearity, reconfirm the Vertical Position and Vertical Size adjustments.

Receive the monoscope pattern.

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 (22) on the remote control to select "VLIN".

Press the RIGHT/LEFT button on the remote control until the SHIFT quantity of the OVER SCAN on upside and downside becomes minimum.

2-10: OSD HORIZONTAL

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

1. press the channel button (33) on the remote control to select "OSD". Press the RIGHT/LEFT button on the remote control

2. until the difference of A and B becomes minimum.

(Refer to Fig. 2-1)

33 OSD 15

2-11: SEPARATION Please do the method (1) or method (2) adjustment. Method (1)

Set the multi-sound signal generator for each different L-ch and R-ch frequency (Ex. L-ch=2KHz, R-ch=400Hz) and receive the RF signal.

Connect the oscilloscope to the Audio Out Jack.

Press the AUDIO button on the remote control to set to the stereo mode.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (70) on the remote control to select “SEPAL”.

Press the RIGHT/LEFT button on the remote control to adjust it until the audio output wave becomes a fine sine wave.

Press the CH UP button 1 time to set to "SEPAH" mode.

Press the RIGHT/LEFT button on the remote control to adjust it until the audio output wave becomes a fine sine wave.

Method (2)

Set the multi-sound signal generator L-ch=1KHz, R-ch =Non input and receive the RF signal.

Connect the oscilloscope to the Audio Out Jack (R-ch).

Press the AUDIO button on the remote control to set to the stereo mode.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (70) on the remote control to select “SEPAL”.

Press the RIGHT/LEFT button on the remote control to adjust it until the R-ch output becomes minimum.

Press the CH UP button 1 time to set to "SEPAH" mode.

Press the RIGHT/LEFT button on the remote control to adjust it until the R-ch output becomes minimum.

Set the multi-sound signal generator L-ch=Non input, R-ch=1KHz and receive the RF signal.

Connect the oscilloscope to the Audio Out Jack (L-ch). Then perform the above adjustments 3~7.

Fig. 2-1

D-2

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