DAEWOO DVQ-10H1FCN, DVQ-9H1FC Service Manual

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Service Manual

TV / VCR Cmobination

CHASSIS : CN-083

Model : DVQ-10H1FCN

(DVQ-9H1FC)

S/M No. : TCN083BEF0

Nov. 2002

DAEWOO ELECTRONICS Corp.

http : //svc.dwe .co.kr

ITEMS MODEL DVQ-10H1FCN (DVQ-9H1FC) REMARK

TV SECTION

STANDARD NTSC-M

TUNING SYSTEM Frequency Synthesizer(FS) Tuning System

TUNING RANGE VHF : 2 - 13(12)

UHF : 14 -69(56) CATV : 1-125(125)

ANTENNA INPUT IMPEDENCE 75 ohm Unbalanced

AUXILIARY INPUT TERMINAL Front : Video, Audio

VIDEO SECTION

FORMAT VHS NTSC Standard

VCR SYSTEM Rotary 2-Head Helical Scanning

Monaural System

AUDIO RECORDING SYSTEM Monaural

TAPE SPEED SP:33.35mm/sec; EP:11.12mm/sec

LP:16.67mm/sec PLAY ONLY

INPUT Video :1Vp-p,75 Ohm

Audio :3.8dBm, over 100K Ohm

TIMER PROGRAMING 6 Event/1 Month

GENERAL POWER INPUT AC 120V 60Hz, DC 12V

POWER CONSUMPTION 47W(AC 120V), 54W(DC 12V)

SOUND OUTPUT 1 W

SPEAKER 3W 8 OHM

OPRATING TEMPERATRE

C to 40

°C

REMOTE CONTROL R-39A02

SPECIAL FUNTION 3-Language OSD

With CAPTION V-Chip K-50MECHA One Touch Record Repeat Play Energy Star Power (Stand-By:3W Under)

✔

Caution

: In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center (http://svc.dwe.co.kr).

-1-

SAFETY INSTRUCTION 2 SPECIFICATION 5 CIRCUIT BLOCK DIAGRAM 6 ALIGNMENT INSTRUCTIONS 8

1.SERVICE MODE ADJUSTMENTS 8

2.ASSEMBLY ADJUSTMENTS 10

3.VCR DECK ADJUSTMENTS 12 SCHEMATIC DIAGRAM 13 EXPLODED VIEW 15 PRINTED CIRCUIT BOARD 16 SERVICE PARTS LIST 18

IC DESCRIPTION 29 TROUBLESHOOTING GUIDE 37

TABLE OF CONTENTS

APPENDIX ( Appendix is provided only by internet [http://svc.dwe.co.kr] )

-2-

SAFETY INSTRUCTION

CAUTION

: DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER°ØS APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANT RESULTING PROPERTY DAMAGE OR USER INJURY. SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE USER. WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM A.C. LINE SHOCK.

SAFETY CHECKS

AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED, A CHECK SHOULD BE MADE OF THE FOLLOWING:

SUBJECT:FIRE & SHOCK HAZARD

1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY AS

TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS. THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH ARE TRANSPORTED TO AND FROM THE REPAIR SHOP.

2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH AS

INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER SUPPLY CORDS, AND OTHER HARDWARE HAVE BEEN REINSTALLED PER ORIGINAL DESIGN. BE SURE, THAT THE SAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOT BEEN DEFEATED.

3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD SOL-

DER JOINTS, SOLDER SPLASHES OF SHARP SOLDER POINTS. BE CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES.

4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION TO

PARTS AND COMPONENTS, FOR FRAYED LEADS, DAMAGED INSULATION (INCLUDING A.C. CORD), AND REPLACE IF NECESSARY. FOLLOW ORIGINAL LAYOUT, LEAD LENGTH AND DRESS.

5. NO LEAD OR COMPONENT SHOULD TOUCH A RECEIVING TUBE OR A

RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUND PROTRUDING METAL SURFACES MUST BE AVOIDED.

6. ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOF RESISTOR,

CAPACITORS, ETC. MUST BE REPLACED WITH EXACT FACTORY TYPES. DO NOT USE REPLACEMENT COMPONENTS OTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED CIRCUIT MODIFICATIONS.

7. AFTER RE-ASSEMBLY OF THE STE ALWAYS PERFORM AN A.C. LEAKAGE

TEST ON ALL EXPOSED METALLIC PARTS OF THE CABINET. (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS, HANDLE AND SCREWS) TO BE SURE THE SET IS SAFE TO OPERATE WITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST USE AN A.C. VOLTMETER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN THE FOLLOWING MANNER : CONNECT A 1500 OHM 10 WATT RESISTOR, PARALLELED BY A .15 MFD. 150V A.C. TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER POPE, CONDUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE A.C. PLUG AND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURED MUST NOT EXCEED .75 VOLTS R.M.S THIS CORRESPONDS TO 0.5 MILLIAMP A.C. NAY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY.

SUBJECT : GRAPHIC SYMBOLS

THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.

THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION ON SERVICE LITERATURE.

SUBJECT : X-RADIATION

1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERATION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PICTURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIRCUMSTANCES, AMY PRODUCE RADIATION IN EXCESS OF DESIRABLE LEVELS.

2. ONLY FACTORY SPECIFIED C.R.T ANODE CONNECTORS MUST BE USED. DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD IN COLOR SETS. ALWAYS RE-INSTALL THEM.

3. IT IS ESSENTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRATION OF THE METER SHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE STANDARD. SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR.

4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR CHASSIS IS SERVICED, THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING CORRECTLY. WE SUGGEST THAT YOU AND YOUR SERVICE ORGANIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGULATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCEDURE, AND THAT THE HIGH VOLTAGE READING BE RECORDED ON EACH CUSTOMER°ØS INVOICE.

5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE, AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCT LONGER THAN IS NECESSARY TO LOCATE THE CAUSE OF EXCESSIVE VOLTAGE.

6. REFER TO HV, B+ AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS (WHERE USED).

SUBJECT : IMPLOSION

1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTEGRA

IMPLOSION PROTECTION SYSTEM. BUT CARE SHOULD BE TAKEN TO AVOID DAMAGE DURING INSTALLATION. AVOID SCRATCHING THE TUBE. OF SCRATCHED REPLACE IT.

2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.

SUBJECT : TIPS ON PROPER INSTALLATION

1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBYHOLE OR CLOSELY FITTING SHELF SPACE, OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW.

2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIATORS WHERE STEAM LEAKAGE IS A FACTOR, ETC.

3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION.

4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCIAL MOUNTING KIT, MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS. A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPACERS)TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.

5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLY SECURED.

6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS.

7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES. INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.S OF THE SAME OR LARGER SCREEN SIZE.

8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY.

10WATT

GOOD EARTH GROUND SUCH AS THE WATER PIPE, CONDUIT, ETC.

1500 OHM

A.C. VOLTMETER

PLACE THIS PROBE ON EACH EXPOSED METAL PART

0.15 uF

-3-

SAFETY INSTRUCTION

CAUTION : Do not attempt to modify this product in any way. Unauthorized modifications will not only void the warranty, but may lead to your being liable for any resulting property damage or user injury. Service work should be performed only after you are thoroughly familiar with all of the following safety checks and servicing guidelines. To do otherwise, increases the risk of potential hazards and injury to the user.

SAFETY CHECKS

After the original service problem has been corrected, a check should be made of the following:

SUBJECT : FIRE & SHOCK HAZARD

1. Be sure that all components are positioned in such a way as to avoid possibility of adjacent component shorts. This is especially important on those chassis which are transported to and from the repair shop.

2. Never release a repair unless all protective devices such as insulators, barriers, covers, shields, strain reliefs, and other hardware have been reinstalled per original design.

3. Soldering must be inspected to discover possible cold solder joints, frayed leads, damaged insulation (including A.C. cord), solder splashes or sharp solder points. Be certain to remove all loose foreign particals.

4. Check for physical evidence of damage or deterioration to parts and components, and replace if necessary follow original layout, lead length and dress.

5. No leads or components should touch a receiving tube or a resistor rated at 1 watt or more. Lead tension around protruding metal surfaces must be avoided.

6. All critical components such as fuses, flameproof resistors, capacitors, etc. must be replaced with exact factory types. Do not use replacement components other than those specified or make unrecommended circuit modifications.

7. After re-assembly of the set always perform an A.C. leakage test on all exposed metallic parts of the cabinet, (the channel selector knob, antenna terminals, handle and screws) to be sure the set is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this test. Use an A.C. voltmeter, having 5000 ohms per volt or more sensitivity, in the following manner : connect a 1500 ohm 10 watt resistor, paralleled by a 15 mfd. 150V A.C. type capacitor between a known good earth ground (9water pipe, conduit, etc.) and the exposed metallic parts, one at a time. Measure the A.C. voltage across the combination of 1500 ohm resistor and 0.15 MFD capacitor. Reverse the A.C. plug and repeat A.C. voltage measurements for each exposed metallic part. Voltage measured must not exceed 0.75 volts R.M.S. This corresponds to 0.5 milliamp A.C. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately.

GRAPHIC SYMBOLS :

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the service personnel to the presence of uninsulated “dangerous voltage” that may be of sufficienty magnitude to constitute a risk of electric shock.

The exclamation point within an equilateral triangle is intended to alert the service personnel to the presence of important safety information in service literature.

Fuse symbol is printed on pcb adjacent to the fuse, with “RISK OF FIRE REPLACE FUSE AS MARKED”. The symbol is explained in the service manual with the following wording or equivalent.

“CAUTION :

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH SAME TYPE (6.3A, 250V)” and “

ATTENTION

: AFIN D’ASSU UNE PROTECTION PERMANENTE CONTRE LES RISQUES D’INCENDIE, REMPLACER UNIQUEMENT PAR UN FUSIBLE DE MEME TYPE ET DE ”6.3A, 250V”.

SUBJECT : X-RADIATION

1. Be sure procedures and instructions to all service personnel cover

the subject of X-rays in current T.V. receivers is the picture tube. However, this tube does not emit X-rays when the high voltage is at the factory specified level. The proper value is given in the applicable schematic. Operation at higher voltages may cause a failure of the picture tube or high voltage supply and, under certain circumstances, may produce radiation in excess of desirable levels.

2. Only factory specified C.R.T. anode connectors must be used.

Degaussing shields also serve as X-ray shield in color sets. Always re-install them.

3. It is essential that the serviceman has available an accurate and

reliable high voltage meter. The calibration of the meter should be checked perio - dically against a reference standard. Such as the one available at your distributor.

4. When the high voltage circuitry is operating properly there is no

possibility of an X-radiation problem. Every time a color chassis is serviced, the brightness should be run up and down while monitoring the high voltage with a meter to be certain that the high voltage does not exceed the specified value and that it is regulating correctly. We suggest that you and your service organization review test procedures so that voltage regulation is always checked as a standard servicing procedure. And that the high voltage reading be recorded on each customer’s invoice.

5. When troubleshooting and making test measurements in a

receiver with a problem of excessive high voltage, avoid being unnecessarily close to the picture tube and the high voltage compartment. Do not operate the chassis longer than is necessary to locate the cause of excessive voltage.

6. Refer to HV, B+and Shutdown adjustment procedures described in

the appropriate schematic and diagrams(where used).

10WATT

Good earth ground, such as the water pipe, conduit, etc.

1500 OHM

A.C. VOLTMETER

Place this probe on each exposed metal part.

0.15 uF

-4-

SAFETY INSTRUCTION

SUBJECT : IMPLOSION

1. All direct viewed picture tubes are equipped with an integral implosion protection system, but care should be taken to avoid damage during installation. Avoid scratching the tube. If scratched, replace it.

2. Use only recommended factory replacement tubes.

SUBJECT : TIPS ON PROPER INSTALLATION

1. Never install any receiver in closed-in recess, cubbyhole or closely fitting shelf space over, or close to heat duct, or in the path of heated air flow.

2. Avoid conditions of high humidity such as : Outdoor patio installations where dew is a factor. Near steam radiators where steam leakage is a factor, etc.

3. Avoid placement where draperies may obstruct rear venting. The customer should also avoid the use of decorative scarves or other coverings which might obstruct ventilation.

4. Wall and shelf mounted installations using a commercial mounting kit, must follow the factory approved mounting instructions. A receiver mounted to a shelf or platform must retain its original feet(or the equivalent thickness in spacers) to provide adequate are flow across the bottom, bolts or screws used for fasteners must not touch and parts or wiring. Perform leakage test on customized installations.

5. Caution customers against the mounting of a receiver on sloping shelf or a tilted position, unless the receiver is properly secured.

6. A receiver on a roll-about cart should be stable on its mounting to the cart. Caution the customer on the hazards of trying to roll a cart with small casters across thresholds or deep pile carpets.

7. Caution customers against the use of a cart or stand which has not been listed by underwriters laboratories, inc. For use with their specific model of television receiver or generically approved for use with T.V.’s of the same or larger screen size.

-5-

SPECIFICATION

ITEMS MODEL DVQ-10H1FCN(DVQ-9H1FC) REMARK

TV SECTION

STANDARD NTSC-M

TUNING SYSTEM Frequency Synthesizer(FS) Tuning System

TUNING RANGE VHF : 2 - 13(12)

UHF : 14 -69(56) CATV : 1-125(125)

ANTENNA INPUT IMPEDENCE 75 ohm Unbalanced

AUXILIARY INPUT TERMINAL Front : Video, Audio

VIDEO SECTION

FORMAT VHS NTSC Standard

VCR SYSTEM Rotary 2-Head Helical Scanning

Monaural System

AUDIO RECORDING SYSTEM Monaural

TAPE SPEED SP:33.35mm/sec; EP:11.12mm/sec

LP:16.67mm/sec PLAY ONLY

INPUT Video :1Vp-p,75 Ohm

Audio :3.8dBm, over 100K Ohm

TIMER PROGRAMING 6 Event/1 Month

GENERAL POWER INPUT AC 120V 60Hz, DC 12V

POWER CONSUMPTION 47W (AC 120V), 54W (DC 12V)

SOUND OUTPUT 1W

SPEAKER 3W 8 OHM

OPRATING TEMPERATRE

C to 40

°C

REMOTE CONTROL R-39A02

SPECIAL FUNTION 3-Language OSD

With CAPTION V-Chip K-50MECHA One Touch Record Repeat Play Energy Star Power (Stand-By:3W Under)

-6-

CIRCUIT BLOCK DIAGRAM

-7-

CONNECTION DIAGRAM

-8-

ALIGNMENT INSTRUCTIONS

1. SERVICE MODE ADJUSTMENTS

Follow the steps below whenever service adjustment is required. See Table-A. and Table-B to determine if service adjustments are required.

1)How to enter the service mode using the user remote control.



Turn the set on.



Direct the remote control to the reception window of your TV/VCR



Push buttons of remote control in sequence as follows.

1 Z MUTE Z RECALL Z MUTE



Then, the screen will appear as follows.



Using the channel up (  ) or down (  ) buttons, select the item you wish to adjust..

The curser (

) move you wish to adjust item.



Using the volume up ( U ) or down( ) buttons to enter in the sevice mode you wish to adjust.



You adjust the values of service mode, automatically save to EEPROM

Table-A : Adjust the values of service mode when a part is replaced

PART

REPLACE

ADJUSTMENT

NOTE

NECESSARY UNNECESSARY

ICS01

(TIMER/SYSCON)

O Data is stored in IS03(EEPROM)

I501

(TV CHROMA)

IS03

(EEPROM)

Initial setting values are written from ICS01 Adjusting Items S5:IFC, S6:GEO, S8:W/B, S9:DP, S11:PG Adjust

CRT O

Adjusting Items S2:SCRN, S6:GEO, S8:W/B, S9:DP

VCR DECK

(DRN-9200)

Adjusting Items related to VCR DECK only. S10:ATK OFF, S11:PG Adjust

ICY01

(VCR Y/C)

S10

S11

S12

FIELD SVC

SCRN

IFC

GEO

W/B

ATK OFF

PG Adjust

FACT

-9-

ALIGNMENT INSTRUCTIONS

Table-B

*1 indicates the items with differnt settings each of sets. *2 CROSS BW: Internal pattern of Device(I501:LA76845) Whenever you select the "CROSS BW" using volume up(

) or down( ) button,

the screen is changing like this;

VOL UP ( U)

NORMAL BLACK WHITE100 WHITE60 CROSS

VOL DOWN ( )

MODE ADJUSTMENT ITEMS

DATA

REMARK

INITIAL RANGE

S2 Screen Adjustment - -

S5: IF CONTROL

AGC Auto - - Automatical adjustment

AGC Vol 3.75V - Select AGC reference voltage (3.75V)

AGC * 1 0-63 Align RF AGC threshold

VIDEO LEV 007 0-7 Must be set to 7

FM LEV 005 0-31 Must be set to 5

HFREQ 032 0-63 NOT USED

CROSS BW * 2 - - NOT USED

S6: GEOMETRY

H CENTER (Horizontal center) * 1 0-31 Using internal cross pattern

(CROSS BW * 2)

V SIZE (Vetical Size) * 1 0-127

V CENTER (Vertical Center) * 1 0-63

V SC (Vertical S-Correction) 0 0-31 Must be set to 0

V LIN (Vertical Linearity) 20 0-31 Must be set to 20

NO SD POWER OFF NO Automatically turn off in 15min for no received signal (YES)

CROSS BW * 2 - -

HBLKR 1 0-6 Must be set to 1

HBLKL 6 0-6 Must be set to 6

S8: WHITE BALANCE

RD(Red Drive) * 1 0-127 Using internal 100% WHITE pattern

(CROSS BW * 2)

GD(Green Drive) 10 0-15

BD(Blue Drive) * 1 0-127

RB(Red Bias) * 1 0-255 Using internal 60% WHITE pattern

(CROSS BW * 2)

GB(Green Bias) * 1 0-255

BB(Blue Bias) * 1 0-255

CROSS BW * 2 - -

S9 D.P

Brightness * 1 0-63

sharpness 0 0-63

Color 30 0-63

Tint 27 0-63

S10 ATK(Auto Tracking) OFF - - For VCR DECK Adjustment

S11 PG Adjustment - - Automatically P.G Adjustment

S12 FACT - - Factory Initialization

-10-

ALIGNMENT INSTRUCTIONS

2. ASSEMBLY ADJUSTMENTS

1) SCREEN ADJUSTMENT(S2)



Enter the service mode and select service adjustment S2



You can see the horizontal straight line on the screen



Adjust the Screen Control volume(located on FBT) so that the horizontal straight line on screen may be disappear.



Press the MENU button to exit the screen adjustment mode.

2) FOCUS ADJUSTMENT(S2)



Turn in a local station and the Focus Control volume(located on FBT) for best picture details at light condition.

3) RF-AGC ADJUSTMENT(S5)



Receive a good local channel.



Enter the service mode and select service adjustment S5



You can see the OSD as shown in below.



Select AGC item, press volume up ( U ) or down( ) buttons until noise or beet in picture disappears.

4) GEOMETRIC ADJUSTMENT(S6)



Enter the service mode and select service adjustment S6



You can see the OSD as shown in below.



Use the CH up (  ) or down (  ) buttons to select "CROSS BW" item.



Use the VOL up ( U ) button to select internal cross pattern.

AGC Auto

IF CONTROL

AGC Vol 3.75V

AGC 000

VIDEO LEV

005 FM LEV

007

HFREQ 032

CROSS BW

H CENTER

GEOMETRY

V SIZE 060

V CENTER 040

V SC

020 V LIN

000

NO SD POWER OFF NO

CROSS BW

020

HBLKR 1 HBLKL 6

H CENTER

GEOMETRY

V SIZE 060

V CENTER 040

V SC

020

V LIN

000

NO SD POWER OFF NO

CROSS BW

020

HBLKR 1 HBLKL 6

- Figure1 -

-11-

ALIGNMENT INSTRUCTIONS

4-1.HORIZONTAL CENTER Adjustment



Select H CENTER item, adjust H CENTER data value to obtain proper horizontal centering of the internal cross

pattern at the left and right of the screen.

4-2.VERTICAL CENTER Adjustment



Select V CENTER item, adjust V CENTER data value to center the raster properly on the screen.

4-3.VERTICAL SIZE Adjustment



Select V SIZE item, adjust V SIZE data value to proper vertical size as figure 1.

5) WHITE BALANCE ADJUSTMENT(S8)



Enter the service mode and select service adjustment S8.



You can see the OSD as shown in below.

NOTE: The color coordinator to x:265, y:270.



Use the CH up(  ) or down (  ) buttons to select "CROSS BW" item.



Use the VOL up ( U ) button to select internal WHITE60 pattern.



Use the CH   buttons to select RB/GB/BB item, adjust data until a good white.



Use the CH   buttons to select "CROSS BW" item.



Use the VOL U button to select internal WHITE100 pattern.



Use the CH   buttons to select RD/BD item, adjust data until a good white.

6) D.P(DIGITAL PRESET) ADJUSTMENT(S9)

SUBBRIGHTNESS Adjustment



Receive a good local channel.



Enter the service mode and select service adjustment S9



You can see the OSD as shown in below.

NOTE : SUBBRIGHTNESS = RETMA PATTERN : 8%



Select Brightness item, adjust Brightness data value to obtain normal brightness level.

Sharpness



Fixed value = 000

Color



Fixed value = 035

Tint



Fixed value = 022

GD 010

BD 063

127 BB

127

CROSS BW

063

127

D.P

Brightness 042

Sharpness 000

Color

022Tint

035

-12-

3. VCR DECK ADJUSTMENTS

1) X-DISTANCE & P2,P3 ADJUSTMENT(S10)



Connect Path JIG to connector PS04, Playback the test tape (DN-2,7KHz)



Connect oscilloscope CH1 to V.SW(PS04 #2),CH2 to PB RF(PS04 #1) and trigger on CH1.



Enter the service mode and select service adjustment S10



Use the VOL up( U ) button to set ATK Off CEN.



Turn the X-distance screw to maximum of PB-RF.



Use the VOL up( U ) button to set ATK Off MIN and MAX.



If PB-RF is not smooth, adjust P2,P3.

❁

P2, P3

VH SW

2) P.G ADJUSTMENT(S11)



Playback the test tape (DN-2,7KHz)



Enter the service mode and select service adjustment S11



Push the "REC" KEY once, P.G Adjustment is Automatically.



Connect oscilloscope CH1 to V/SW(PS04 #2),CH2 to CVS(PS04 #5) and trigger on CH1,

Confirm The P.G is 6.5H(412msec).

3) AUDIO AZIMUTH ADJUSTMENT



Playback the test tape (DN-2,7KHz)



Connect oscilloscope and level meter to Aout(PS04 #4).



Turn the azimuth screw to maximum 7KHz level.

4) FACTORY OUTGOING MODE(S12)



If you select the S12, then the set becomes factory outgoing status.



You can see the channel to "02" or if the set playback you can see the OSD "AUTO TRACKING"

ALIGNMENT INSTRUCTIONS

-13-

SCHEMATIC DIAGRAM (POWER & DEF.)

-14-

SCHEMATIC DIAGRAM(MAIN)

-15-

4859808660

4851941600

4859816191

MAIN PCB

UNION PCB 246 X 246 X 51.6

DRN-9200

330 X 246 X t1.6

A23KQU22X02

4859610440

-16-

PRINTED CIRCUIT BOARD(MAIN)

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