SHARP LC37SH12U Service Manual

SERVICE MANUAL

LCD COLOR TELEVISION

MODEL

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

CONTENTS

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

•

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

•

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

•

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

•

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

•

DISASSEMBLY INSTRUCTIONS ........................................................................................

•

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

•

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

•

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

•

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

•

TROUBLESHOOTING GUIDE .............................................................................................

•

BLOCK DIAGRAM ................................................................................................................

•

PRINTED CIRCUIT BOARDS ..............................................................................................

•

SCHEMATIC DIAGRAMS ....................................................................................................

•

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

•

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

•

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

•

LC-37SH12U

Page A1-1 A1-1 A1-1 A1-2 A2-1~A2-5 B1-1~B2-2 C-1 C-2 C-3 D-1~D-5 E-1~E-5 F-1~F-8 G-1~G-12 H-1~H-48 I-1 J-1~J-3 K1-1~K2-9

SHARP CORPORATION

This document has been published to be used for after sales service only. The contents are subject to change without notice.

SERVICING NOTICES ON CHECKING

1. KEEP THE NOTICES

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. BE CAREFUL WITH THE LCD PANEL

Avoid a shock to the panel while servicing. Take enough care to deal with it.

5. 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.

PERFORM A SAFETY CHECK AFTER

6. 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 (YG6260M) on the contact section of the heat sink. Before applying new silicon grease, remove all the old silicon grease. (Old grease may cause damage to the IC and Transistor).

A1-1

ABOUT LEAD FREE SOLDER (PbF)

Distinction of PbF PCB:

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

Caution:

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

•

Typically the melting point is 86°F~104°F(30°C~40°C) higher. Please use a soldering iron with temperature control and adjust it to 650°F ± 20°F (350°C ± 10°C). In case of using high temperature soldering iron, please be careful not to heat too long. Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C).

•

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

•

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

Recommendations

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

A1-2

GENERAL SPECIFICATIONS

0oC

60oC

G-1 TV LCD LCD Size / Visual Size 37.02 inch / 940.3mmV

G-2 Tuning Broadcasting System Analog US System M

G-3 Signal Video Signal Input Level 1 V p-p/75 ohm

G-4 Power Power Source AC 120V, 60Hz

G-5 Regulation Safety UL(UL6500_2nd)/CSA(E60065_00)

G-6 Temperature Operation

G-7 Operating Humidity Less than 80% RH G-8 Clock and Clock Yes

System LCD Type Color TFT LCD

Color System NTSC Speaker 2 Speaker

Sound Output Max 10W + 10W

System Digital ATSC(8VSB)/QAM

Tuner and System 1Tuner Receive CH Destination US (W/CABLE)

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

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

RGB Signal Output Level -Audio Signal Input Level 0.85 V p-p/50k ohm

Power Consumption at AC 180W at 120V 60Hz

Protector Power Fuse Yes

Timer Sleep Timer Max Time 120 Min

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

Number of Pixels 1366(H) x 768(V)

View Range Left/Right 88/88 degree

Position Front Size 1.6 x 4.8 inch Impedance 4 ohm

10%(Typical) ---

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

Sound(FS) 41.25MHz FP-FS 4.50MHz

Output Level -S/N Ratio (Weighted) -Horizontal Resolution at DVD Mode --

Output Level at DVD --

Digital Output Level 0.5 V p-p/75 ohm S/N Ratio at DVD (Weighted) -Harmonic Distortion -Frequency Response : at DVD --

DC --

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

Safety Circuit Yes IC Protector(Micro Fuse) Yes

Radiation FCC / IC Laser --

Storage

Step 10 Min

Up/Down 88/88 degree

at TV 0.85 V p-p/1k ohm

at Video CD --

at SVCD --

at CD --

at DC --

0-1.70 V p-p/1k ohm (Variable out mode)

~ +4

-2

~ +

A2-1

GENERAL SPECIFICATIONS

G-9 Remote Unit RC-MQ

G-10 Features Auto Shut Off Yes

Control Glow in Dark Remocon No

Remocon Format SHARP Format SHARP Custom Code 10000 / 10001 Power Source Voltage(D.C) 3V

Total Keys 40 Keys Keys

Auto Search No Power On Memory Yes Comb Filter Yes

Game Position No Auto Setup(Language/CH Program) No Picture Setting(TV) Yes

Picture Setting(PC) Yes

UM size x pcs UM-3 x 2 pcs

POWER FUNCTION Source POWER DISPLAY LIGHT SEARCH+ SEARCHPLAY REC STOP PAUSE SKIP+ SKIPVIEW MODE 1 2 3 4 5 6 7 8 9 0

ENT INPUT FLASH BACK VOL+ VOLCH+ CHSURROUND MUTE FREEZE MENU LEFT ENTER RIGHT UP DOWN EXIT RETURN FAVORITE A FAVORITE B FAVORITE C FAVORITE D FAVORITE SLEEP AUDIO AV MODE CC

AV Mode(Picture Preference) Yes Brightness , Contrast , Color Yes Tint Yes Sharpness Yes Color Temperature Yes Cable Clear No Backlight 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

3 -D

No No

No No No No No No No No No

A2-2

GENERAL SPECIFICATIONS

Brightness , Contrast Yes HOR Position , VER Position Yes Phase, Clock Yes Red, Green, Blue Yes Auto Adjust No

Audio MTS Yes

Tuning CH Program Yes

Label CH Label Yes

Favorite CH Yes V-Chip Yes

RRT Setup Lock Hotel Lock No

OSD Language Closed Caption CC Advanced View Mode (Picture Size) Yes Picture Scroll Yes Cinema Mode Yes Aspect Yes PFC(Power Factor circuit) Freeze frame Yes PIP/POP No Direct Input Selection Yes Digital Out Dolby Digital Yes

PC Monitor Input Yes

HDMI Input Yes

Component Input Yes

Backlight Yes

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

Air/Cable Yes ADD/DELETE Yes

Video Label Yes

Type

Channel Lock No Video Lock No Panel Lock No

MPEG No PCM Yes DTS No

VGA (640x480) Yes (60Hz) VGA (720x400) Yes (70Hz) WVGA (848x480) Yes (60Hz) SVGA (800x600) Yes (60Hz) XGA (1024x768) Yes (60Hz) WXGA (1280x768) Yes (60Hz) WXGA (1280x720) Yes (60Hz) WXGA (1360x768) Yes (60Hz) SXGA (1280x1024) No

VGA (640x480) Yes (60Hz) 720x480i (4:3) Yes (60Hz) 720x480i (16:9) Yes (60Hz) 720x480p (4:3) Yes (60Hz) 720x480p (16:9) Yes (60Hz) 720x576i (4:3) No 720x576i (16:9) No 720x576p (4:3) No 720x576p (16:9) No 1280x720p Yes (60Hz) 1920x1080i Yes (60Hz)

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

USA/CANADA Type Yes

English French Spanish Yes Yes

A2-3

GENERAL SPECIFICATIONS

G-11 Accessories Owner's Manual Language English/French/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 Facility List Important Safeguard Dew/AHC Caution Sheet Quick Set-up Sheet Battery Yes

AC Adapter AC Cord (for AC Adapter) AC Cord (Flat Polarity Plugs) Yes Cable Cramp Yes Stand Yes Stand Screw Yes Hexagon Wrench Yes AV Cord (2Pin-1Pin) Registration Card (NDL Card) Yes 300 to 75ohm Antenna Adapter Cleaning Cloth Yes Sheet Information (Return) Sheet Information (HDMI) No

w/Guarantee Card Yes

No Poles -Terminal --

No Terminal --

UM size x pcs UM-3 x 2 pcs OEM Brand No

A2-4

GENERAL SPECIFICATIONS

G-12 Interface Switch Top Power (Tact) Yes

Rear Main Power SW No

Indicator Power/Stand-By Yes (Green / Red)

Terminals Side Video Input 1 RCA x 1

Rear AC Inlet

G-13 Set Size Approx. W x D x H (mm) 918.5 x 293 x 648

G-14 Weight Net (Approx.) 24.0kg (52.9 lbs)

G-15 Carton Master Carton No

Gift Box Material Double/Brown

Drop Test 1 Corner / 3 Edges / 5 Surfaces

Container Stuffing (40' container) 276 w/Pallet No w/Wrapping No

G-16 Material Cabinet Front PC+ABS 94V0 NON-HALOGEN

PCB Non-Halogen Demand No

G-17 Environment Environmental standard requirement Green procurement of SHARP

Pb-free Phase3(Phase3A)

Rohs Yes

Channel Up/Menu Up Yes Channel Down/Menu Down Yes Volume Up/Menu > Yes Volume Down/Menu < Yes Menu No Play No Eject No Skip+, Search+ No Skip-, Search- No Still/Pause No Stop No Main Power SW No Input Select Yes

On Timer No

Audio Input 1 RCA x 2(L/MONO, R) S - Input 1 Video Input 2 RCA x 1 Audio Input 2 RCA x 2(L/MONO, R) S - Input 2 Video Output No Audio Output Component Input 1 Analog Audio RCA x 2(L/MONO, R) Component Input 2 No Analog Audio No HDMI Input 1 Analog Audio Mini Jack HDMI Input 2 Analog Audio No Sub Woofer Out No PC Monitor Input Analog Audio HDMI 1 Audio Input Alternative Digital Audio Output Coaxial DC Jack (Center +) No VHF/UHF Antenna Input Video Input 3 No Audio Input 3 No S - Input 3 No Other Terminal No

w/o Stand Approx. W x D x H (mm)

Net w/o Stand (Approx.) 21.5kg (47.4 lbs) Gross (Approx.) 28.0kg (61.7 lbs)

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

W/Color Photo Label No W/Handle No Dimensions W x D x H(mm) 1,032 x 287 x 727 Description of Origin Yes

Height (cm) 25

Rear PS 94V0 NON-DECABROM Jack Panel --

Eyelet Demand Yes

Measures for Whisker Yes

Yes

RCA x 2 (Variable) (L, R) RCA x 3

HDMI x 1

Yes

F Type

Yes

918.5 x 115 x601.5

Sets/40' container

A2-5

DISASSEMBLY INSTRUCTIONS

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

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

Remove the 15 screws 1.

Remove the 7 screws 2.

Remove the Back Cabinet in the direction of arrow.

Back Cabinet

Fig. 1-1

1-3: REMOCON PCB (Refer to Fig. 1-3)

Disconnect the following connector: (CP2201).

Remove the 2 screws 1.

Remove the Remocon PCB in the direction of arrow.

Remocon PCB

1-4: LCD BLOCK (Refer to Fig. 1-4)

Remove the Holder Panel.

Remove the 5 screws 1.

Remove the LCD Block in the direction of arrow (A).

Holder Panel

LCD Block

Fig. 1-3

1-2: OPERATION PCB (Refer to Fig. 1-2)

Disconnect the following connector: (CP2203).

Remove the Plate Button in the direction of arrow (A).

Remove the 3 screws 1.

Remove the Operation PCB in the direction of arrow (B).

Remove the 5 screws 2.

Remove the 2 screws 3.

Remove the Angle Hinge in the direction of arrow (C).

Operation PCB

(B)

Plate Button

(A)

(C)

Fig. 1-2

Front Cabinet

(A)

Holder Panel

Fig. 1-4

B1-1

DISASSEMBLY INSTRUCTIONS

1-5: DIGITAL PCB (Refer to Fig. 1-5)

Disconnect the following connectors: (CP4305, CP6501, CP6503, CP6504, CP7200).

Remove the 3 screws 1.

Remove the screw 2.

Remove the 6 screws 3.

Remove the Plate Jack in the direction of arrow (A).

Remove the 9 screws 4.

Remove the Digital PCB and Shield Digital in the direction of arrow (B).

Plate Jack

(A)

LCD Block

(B)

Shield Digital

Digital PCB

Fig. 1-5

1-7: ANGLE MAIN (Refer to Fig. 1-7)

1.2.Remove the 2 screws 1. Remove the Angle Main.

Angle Main

LCD Block

1-8: POWER PCB (Refer to Fig. 1-8)

Disconnect the following connector: (CP406).

Remove the 8 screws 1.

Remove the 2 screws 2.

Remove the Angle PCB-1 and Holder PCB.

Remove the Power PCB and Angle PCB-3 in the direction of arrow.

Fig. 1-7

1-6: AV PCB (Refer to Fig. 1-6)

Disconnect the following connectors: (CP3801, CP3802, CP301).

Remove the 5 screws 1.

Remove the AV PCB in the direction of arrow.

AV PCB

LCD Block

Fig. 1-6

LCD Block

Holder PCB

Angle PCB-3

Power PCB

Angle PCB-1

Fig. 1-8

B1-2

DISASSEMBLY INSTRUCTIONS

1-9: ANGLE LCD TOP/ANGLE LCD BOTTOM / ANGLE PCB-2 (Refer to Fig. 1-9)

Remove the 3 screws 1.

Remove the Angle PCB-2 and Holder Wire in the direction of arrow (A).

Remove the 4 screws 2.

Remove the Angle LCD Bottom and Holder Wire in the direction of arrow (B).

Remove the 4 screws 3.

Remove the Angle LCD Top and Holder Cord in the direction of arrow (C).

Angle PCB-2

Holder Wire

Angle LCD Bottom

Holder Cord

(A)

(B)

Holder Wire

Holder Cord

(C)

Angle LCD Top

Fig. 1-9

B1-3

DISASSEMBLY INSTRUCTIONS

REMOVAL AND INSTALLATION OF FLAT PACKAGE IC

REMOVAL

Put Masking Tape (cotton tape) around the Flat Package

1. 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 rotate or move the IC back and forth unit IC can move back and forth easily after desoldering the 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

IC pattern

Fig. 2-4

Fig. 2-2

B2-1

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. 2-5.)

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. 2-6.)

Fig. 2-5

When bridge-soldering between terminals and/or the

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

Thin-tip Soldering Iron

Fig. 2-8

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. 2-7.)

NOTE

Do not absorb the solder to excess.

Soldering Iron

Braided Shield Wire

Fig. 2-6

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 and on the remote

control for more than a the standard time in the appropriate condition. (See below chart.)

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:

POWER ON total hours are displayed on the screen. Can be checked of the INITIAL DATA of MEMORY IC. Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".

Check of the SUM DATA and MICON VERSION 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.

C-1

WHEN REPLACING EEPROM (MEMORY) IC

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

Initial total of MEMORY IC, POWER ON total hours and MICON VERSIONcan 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, turn off the power.

NOTE:

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

INIT : 7A01 DVP : C8C6 LCD ON : 0000

MAIN MICON Version

SUB MICON Version

Digital TV MICON Fimware

ANALOG M : DA05773081 ANALOG S : DA0276Z201 DIGITAL : CA02B73093

Initial setting data check sum.

SCALER data check sum.

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)

FIG. 1

CONFIRMATION OF INITIAL DATA

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 INITIAL SETTING TABLE (Attached "INITIAL DATA").

Turn on the POWER, and set to the TV mode.

1. Set the VOLUME to minimum.

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

3. ADDRESS and DATA should appear as FIG 2.

ADDRESS DATA

INIT 0001 93 LCD ON: 0000 ANALOG M: DA05773081 ANALOG S: DA0276Z201 DIGITAL: CA02B73093

FIG. 2

ADDRESS is now selected and should "blink". Using the UP/DOWN buton on the remote, step through the ADDRESS until

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

Repeat steps 4 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.

10.

Turn POWER on.

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.

C-2

RE-WRITE FOR DIGITAL SOFT FIRMWARE

JG176

Ref. No. Part No. Parts Name Remarks

2007 USA DTV LCD ROM DISC

APJG176126JG176

Copy the "update.dat" in CD to USB Flash Memory.

Recommended USB Flash Memory

• SanDisk Cruzer Mini USB Flash Drive 128Mb

• SanDisk Cruzer Mini USB Flash Drive 256Mb

• SanDisk Cruzer Micoro USB Flash Drive 128Mb

• SanDisk Cruzer Micoro USB Flash Drive 256Mb

• TwinMos ModileDisk3 128Mb (USB 2.0)

• TwinMos ModileDisk3 256Mb (USB 2.0)

NOTE:

Confirm that the AC cord is plugged out.

After Format is done with FAT32 File system beforehand, USB Flash Memory is used. The computer of WINDOWS2000 is used.

2007 USA DTV LCD ROM DISC

Up-Date of the Firmware

Set the minus driver to the topside of the USB connector cover, remove the USB connector cover. Insert the USB Flash Memory to USB connector. (Refer to Fig.1)

SET (REAR)

Fig.1

Insert the AC CORD of the set and turn on the power. The Up-Date will start automatically.

4. During the writing, "PLEASE WAIT" will appear on the screen.

After the Up-Date, the screen will return to normal screen.

5. Turn off the power.

6. Unplug the AC CORD, and remove the USB Flash Memory.

USB connector cover

Insert the AC CORD again.

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

Turn on the power.

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

10. The unit will now have the correct DATA for the new DIGITAL SOFT FIRMWARE.

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. 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 (YG6260M) 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. Patterm Generator

On-Screen Display Adjustment

1.2.Set the VOLUME to minimum. Press the VOL. DOWN button on the set and the channel button (9) on the remote control for more than 2 seconds to display adjustment mode on the screen as shown in Fig. 1-1.

TV STRETCH

Function

Use the UP/DOWN button or Channel button (0-9) on

01 H POSI OSD 350

the remote control to select the options shown in Fig. 1-2.

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

To display the adjustment screen for TV, AV, YUV, HDMI and PC mode, press the INPUT button on the remote control. Press the VOL.DOWN button on the set and the channel (9) on the remote control for more than 2 seconds.

Step No.

Fig. 1-1

FUNCTION

NO.

H POSI OSD

V POSI OSD

R DRIVE(N)

R CUT OFF(N)

G DRIVE(N)

G CUT OFF(N)

B DRIVE(N)

B CUT OFF(N)

R DRIVE(C)

R CUT OFF(C)

G DRIVE(C)

G CUT OFF(C)

B DRIVE(C)

B CUT OFF(C)

R DRIVE(W)

R CUT OFF(W)

G DRIVE(W)

G CUT OFF(W)

B DRIVE(W)

B CUT OFF(W)

H POSI CENTER

H POSI MAX

H POSI MINH

FUNCTION

NO.

V POSI CENTER

V POSI MAX

V POSI MIN

BAK LIGHT CENT

BAK LIGHT MAX

BAK LIGHT MIN

BRIGHT CENT

BRIGHT MAX

BRIGHT MIN

TINT

SHARP V1 MAX

SHARP H1 MAX

SHARP H2 MAX

CONT CENTER

CONT MAX

CONT MIN

COLOR CENT

COLOR MAX

COLOR MIN

CONTRAST 40

Y BRIGHT

Y/Cb/Cr CONTRAST

ADC ADJUST

Fig. 1-2

2. BASIC ADJUSTMENTS

2-1: WHITE BALANCE

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

Receive the gray scale pattern from the Pattern Generator.

Press the INPUT button on the remote control to set to the AV 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 (03) on the remote control to select "R DRIVE(N)".

Press the UP/DOWN button on the remote control to select the "R CUT OFF(N)", "B DRIVE(N)", "B CUT OFF(N)", "R DRIVE(C)", "R CUT OFF(C)", "B DRIVE(C)", "B CUT OFF(C)", "R DRIVE(W)", "R CUT OFF(W)", "B DRIVE(W)" or "B CUT OFF(W)".

Adjust the LEFT/RIGTH button on the remote control to whiten the R CUT OFF(N), B DRIVE(N), B CUT OFF(N), R DRIVE(C), R CUT OFF(C)", B DRIVE(C), B CUT OFF(C), R DRIVE(W), R CUT OFF(W), B DRIVE(W) and B CUT OFF(W) at each step tone sections equally.

Perform the above adjustments 6 and 7 until the white achieved.

D-1

ELECTRICAL ADJUSTMENTS

2-2: CONTRAST MAX

Receive the monoscope pattern. (RF Input)

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 (40) on the remote control to select "CONTRAST MAX".

Press the LEFT/RIGTH button on the remote control until the contrast step No. becomes "156"

Check if the picture is normal.

Receive the monoscope pattern. (VIDEO Input)

Press the INPUT button on the remote control to set to the AV 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 (40) on the remote control to select "CONTRAST MAX".

10.

Press the LEFT/RIGTH button on the remote control until the contrast step No. becomes "166".

11.

Check if the picture is normal.

12.

Playback the DVD(480i) disc. (COMPONENT Input)

13.

Press the INPUT button on the remote control to set to the YUV mode.

14.

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

15.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (40) on the remote control to select "CONTRAST MAX".

16.

Press the LEFT/RIGTH button on the remote control until the contrast step No. becomes "166".

17.

Playback the DVD(480i) disc. (HDMI Input)

18.

Press the INPUT button on the remote control to set to the HDMI mode.

19.

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

20.

Activate the adjustment mode display of Fig. 1-1 and press the channel button (40) on the remote control to select "CONTRAST MAX".

21.

Press the LEFT/RIGTH button on the remote control until the contrast step No. becomes "147".

22.

Check if the picture is normal.

2-3: BRIGHT CENT

Receive the monoscope pattern. (VIDEO Input)

Press the INPUT button on the remote control to set to the AV mode.

Set the screen mode to FULL.

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 "BRIGHT CENT".

Press the LEFT/RIGTH button on the remote control until the screen begin to shine.

Receive the monoscope pattern. (RF Input)

Press the INPUT button on the remote control to set to the TV mode. Then perfrom the the above adjustments 4~6.

Playback the DVD(480i) disc. (COMPONENT Input)

10.

Press the INPUT button on the remote control to set to the YUV mode. Then perfrom the the above adjustments 4~6.

11.

Playback the DVD(480i) disc. (HDMI Input)

12.

Press the INPUT button on the remote control to set to the HDMI mode. Then perfrom the the above adjustments 4~6.

D-2

)

ELECTRICAL ADJUSTMENTS

2-4: Confirmation of Fixed Value (Step No.)

Please check if the fixed values of each of the ad

NO. FUNCTION

1 H POSI OSD 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 2V POSI OSD 88 88 8888 88 88 8888 88 88 8888 88 88 88 88 88 88 88 88 88 88 88 88 88 88 8888 88 88888888888888 88 8888 88 3 R.DRIVE (N) *138 *138 *138 *138 *138 *138 *138 *138 *138 *138 *138 *138 *137 *137 *137 *137 *140 *140 *140 *140 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 4 R CUTOFF (N) *127 *127 *127 *127 *126 *126 *126 *126 *126 *126 *126 *126 *127 *127 *127 *127 *127 *127 *127 *127 *127 *127 *125 *125 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 5 G DRIVE (N) 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 6 G CUTOFF (N) 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 7 B DRIVE (N) *125 *125 *125 *125 *127 *127 *127 *127 *126 *126 *126 *126 *126 *126 *126 *126 *123 *123 *123 *123 *123 *123 *122 *122 *123 *123 *123 *123 *123 *123 *123 *123 *123 *123 *123 *123 *123 *123 *123 *123 8 B CUTOFF (N) *127 *127 *127 *127 *123 *123 *123 *123 *124 *124 *124 *124 *123 *123 *123 *123 *130 *130 *130 *130 *130 *130 *129 *129 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 9 R.DRIVE (C) *133 *133 *133 *133 *134 *134 *134 *134 *134 *134 *134 *134 *134 *134 *134 *134 *138 *138 *138 *138 *135 *135 *133 *133 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 10 R CUTOFF (C) *128 *128 *128 *128 *128 *128 *128 *128 *127 *127 *127 *127 *128 *128 *128 *128 *128 *128 *128 *128 *127 *127 *127 *127 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 11 G DRIVE (C) 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 12 G CUTOFF (C) 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 13 B DRIVE (C) *140 *140 *140 *140 *141 *141 *141 *141 *141 *141 *141 *141 *139 *139 *139 *139 *142 *142 *142 *142 *140 *140 *140 *140 *141 *141 *141 *141 *141 *141 *141 *141 *141 *141 *141 *141 *141 *141 *141 *141 14 B CUTOFF (C) *128 *128 *128 *128 *127 *127 *127 *127 *126 *126 *126 *126 *127 *127 *127 *127 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 15 R.DRIVE (W) *153 *153 *153 *153 *153 *153 *153 *153 *153 *153 *153 *153 *152 *152 *152 *152 *151 *151 *151 *151 *154 *154 *153 *153 *155 *155 *155 *155 *155 *155 *155 *155 *155 *155 *155 *155 *155 *155 *155 *155 16 R CUTOFF (W) *125 *125 *125 *125 *125 *125 *125 *125 *125 *125 *125 *125 *126 *126 *126 *126 *126 *126 *126 *126 *125 *125 *125 *125 *124 *124 *124 *124 *124 *124 *124 *124 *124 *124 *124 *124 *124 *124 *124 *124 17 G DRIVE (W) 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 18 G CUTOFF (W) 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 19 B DRIVE (W) *106 *106 *106 *106 *108 *108 *108 *108 *106 *106 *106 *106 *106 *106 *106 *106 *102 *102 *102 *102 *104 *104 *103 *103 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 20 B CUTOFF (W) *125 *125 *125 *125 *122 *122 *122 *122 *124 *124 *124 *124 *124 *124 *124 *124 *128 *128 *128 *128 *129 *129 *129 *129 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 21 H POSI CENTER 291 291 291 291 291 291 291 291 289 289 289 289 307 307 307 307 276 276 276 276 540 366 272 272 262 262 262 262 131 132 131 131 434 280 230 230 151 152 151 151 22 H POSI MAX --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --23 H POSI MIN --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --24 V POSI CENTER 20 28 50 20 20 28 50 20 20 28 50 20 20 28 50 20 46 61 105 46 128 41 90 26 22 30 51 22 45 60 103 45 128 41 97 32 42 57 101 42 25 V POSI MAX --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --26 V POSI MIN --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --29 BAK LIGHT CENT 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 30 BAK LIGHT MAX 225 255 225 225 225 225 225 225 225 225 225 225 255 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 31BAK LIGHT MIN0 0 00 0 0 00 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 0 000000 0 00 0 32 BRIGHT CENT 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 33 BRIGHT MAX 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 160 34 BRIGHT MIN 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 35 TINT 129 129 129 129 124 124 124 124 124 124 124 124 126 126 126 126 123 123 123 123 122 122 122 122 121 121 121 121 125 125 125 125 133 133 133 133 121 121 121 121 36 SHARP V1 MAX 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 37 SHARP H1 MAX 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 38 SHARP H2 MAX 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 39 CONT CENTER *109 *109 *109 *109 *116 *116 *116 *116 *115 *115 *115 *115 *115 *115 *115 *115 *91 *91 *91 *91 *92 *92 *94 *94 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 40 CONT MAX *156 *156 *156 *156 *166 *166 *166 *166 *165 *165 *165 *165 *166 *166 *166 *166 *130 *130 *130 *130 *133 *133 *136 *136 *147 *147 *147 *147 *147 *147 *147 *147 *147 *147 *147 *147 *147 *147 *147 *147 41CONT MIN 50 50 5050 50 50 5050 50 50 5050 50 50 50 50 50 50 50 50 50 50 50 50 50 50 5050 50 50505050505050 50 5050 50 42 COLOR CENT 112 112 112 112 108 108 108 108 108 108 108 108 125 125 125 125 137 137 137 137 140 140 140 140 137 137 137 137 137 137 137 137 135 135 135 135 137 137 137 137 43 COLOR MAX 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 210 44COLOR MIN 64 64 6464 64 64 6464 64 64 6464 64 64 64 64 64 64 64 64 64 64 64 64 64 64 6464 64 64646464646464 64 6464 64 47 CONT 40 *147 *147 *147 *147 *154 *154 *154 *154 *154 *154 *154 *154 *154 *154 *154 *154 *122 *122 *122 *122 *124 *124 *126 *126 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 49 Y BRIGHT *487 *487 *487 *487 *486 *486 *486 *486 *486 *486 *486 *486 *486 *486 *486 *486 *537 *537 *537 *537 *537 *537 *529 *529 *469 *469 *469 *469 *469 *469 *469 *469 *469 *469 *469 *469 *469 *469 *469 *469 50

Y/Cb/Cr CONTRAST

NO.

FUNCTION

1 H POSI OSD 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 2V POSI OSD 88 88 8888 88 88 8888 88 88 8888 88 88 88 88 88 88 88 88 88 88 88 88 3 R.DRIVE (N) *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 *139 137 137 137 137 137 137 137 137 137 137 137 137 4 R CUTOFF (N) *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 --- --- --- --- --- --- --- --- --- --- --- --5 G DRIVE (N) 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 6 G CUTOFF (N) 128 128 128 128 128 128 128 128 128 128 128 128 --- --- --- --- --- --- --- --- --- --- --- --7 B DRIVE (N) *123 *123 *123 *123 *123 *123 *123 *123 *123 *123 *123 *123 115 115 115 115 115 115 115 115 115 115 115 115 8 B CUTOFF (N) *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 --- --- --9 R.DRIVE (C) *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 --- --- --- --- --- --- --- --- --- --- --- --10 R CUTOFF (C) *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 *126 --- --- --- --- --- --- --- --- --- --- --- --11 G DRIVE (C) 128 128 128 128 128 128 128 128 128 128 128 128 --- --- --- --- --- --- --- --- --- --- --- --12 G CUTOFF (C) 128 128 128 128 128 128 128 128 128 128 128 128 --- --- --- --- --- --- --- --- --- --- --- --13 B DRIVE (C) *141 *141 *141 *141 *141 *141 *141 *141 *141 *141 *141 *141 --- --- --- --- --- --- --- --- --- --- --- --14 B CUTOFF (C) *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 *128 --- --- --- --- --- --- --- --- --- --- --- --15 R.DRIVE (W) *155 *155 *155 *155 *155 *155 *155 *155 *155 *155 *155 *155 --- --- --- --- --- --- --- --- --- --- --- --16 R CUTOFF (W) *124 *124 *124 *124 *124 *124 *124 *124 *124 *124 *124 *124 --- --- --- --- --- --- --- --- --- --- --- --17 G DRIVE (W) 128 128 128 128 128 128 128 128 128 128 128 128 --- --- --- --- --- --- --- --- --- --- --- --18 G CUTOFF (W) 128 128 128 128 128 128 128 128 128 128 128 128 --- --- --- --- --- --- --- --- --- --- --- --19 B DRIVE (W) *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 --- --- --- --- --- --- --- --- --- --- --- --20 B CUTOFF (W) *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 *130 --- --- --- --- --- --- --- --- --- --- --- --21 H POSI CENTER 230 230 230 230 230 230 230 230 230 230 230 230 289 289 211 288 289 223 223 371 371 371 371 371 22 H POSI MAX --- --- --- --- --- --- --- --- --- --- --- --- 314 314 236 313 314 248 248 396 396 396 396 396 23 H POSI MIN --- --- --- --- --- --- --- --- --- --- --- --- 264 264 186 263 264 198 198 346 346 346 346 346 24 V POSI CENTER 32 32 32 32 32 32 32 32 32 32 32 32 35 35 37 37 35 27 27 35 35 35 35 35 25 V POSI MAX --- --- --- --- --- --- --- --- --- --- --- --- 60 60 62 62 60 47 47 60 60 60 60 60 26 V POSI MIN --- --- --- --- --- --- --- --- --- --- --- --- 10 10 12 12 10 7 7 10 10 10 10 10 29 BAK LIGHT CENT 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 30 BAK LIGHT MAX 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 225 31 BAK LIGHT MIN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 32 BRIGHT CENT 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 126 33 BRIGHT MAX 160 160 160 160 160 160 160 160 160 160 160 160 170 170 170 170 170 170 170 170 170 170 170 170 34 BRIGHT MIN 70 70 70 70 70 70 70 70 70 70 70 70 60 60 60 60 60 60 60 60 60 60 60 60 35 TINT 128 128 128 128 128 128 128 128 128 128 128 128 --- --- --- --- --- --- --- --- --- --- --- --36 SHARP V1 MAX 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 37 SHARP H1 MAX 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 38 SHARP H2 MAX 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 511 39 CONT CENTER *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 *102 95 95 95 95 95 95 95 95 95 95 95 95 40 CONT MAX *147 *147 *147 *147 *147 *147 *147 *147 *147 *147 *147 *147 127 127 127 127 127 127 127 127 127 127 127 127 41CONT MIN 50 50 5050 50 50 5050 50 50 5050 60 60 60 60 60 60 60 60 60 60 60 60 42 COLOR CENT 138 138 138 138 138 138 138 138 138 138 138 138 --- --- --- --- --- --- --- --- --- --- --- --43 COLOR MAX 210 210 210 210 210 210 210 210 210 210 210 210 --- --- --- --- --- --- --- --- --- --- --- --44 COLOR MIN 64 64 64 64 64 64 64 64 64 64 64 64 --- --- --- --- --- --- --- --- --- --- --- --47 CONT 40 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 *136 121 121 121 121 121 121 121 121 121 121 121 121 49 Y BRIGHT *469 *469 *469 *469 *469 *469 *469 *469 *469 *469 *469 *469 512 512 512 512 512 512 512 512 512 512 512 512 50

Y/Cb/Cr CONTRAST

NOTE: For the step no. with * mark, please adjust it according to the situation of the set.

SIDE BAR S.STRETCH ZOOM STRETCH SIDE BAR S.STRETCH ZOOM STRETCH SIDE BAR S.STRETCH ZOOM STRETCH SIDE BAR S.STRETCH ZOOM STRETCH SIDE BAR S.STRETCH ZOOM STRETCH ZOOM STRETCH ZOOM STRETCH SIDE BAR S.STRETCH ZOOM STRETCH SIDE BAR S.STRETCH ZOOM STRETCH ZOOM STRETCH ZOOM STRETCH SIDE BAR S.STRETCH ZOOM STRETCH

190 190 190 190 190 190 190 190 190 190 190 190 190 190 190 190 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128

SIDE BAR S.STRETCH ZOOM STRETCH SIDE BAR S.STRETCH ZOOM STRETCH ZOOM STRETCH ZOOM STRETCH SIDE BAR STRETCH SIDE BAR STRETCH STRETCH SIDE BAR STRETCH SIDE BAR STRETCH STRETCH STRETCH STRETCH

128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128

ustment items are set correctly referring below. (TV/AV/YUV/HDMI/DIGITAL TUNER/PC

480i 480p 720p 1080i

CVBS Y/C

DIGITAL TUNER

480i 480p 720p 1080i

VGA(640*480) VGA(720*400) SVGA(800*600) XGA(1024*768)

WVGA(848*480)

YUV

WXGA(1280*720) WXGA(1280*768) WXGA(1360*768)

480i 480p 720p 1080i VGA

HDMI

D-3 D-4

ELECTRICAL ADJUSTMENTS

3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION)

LCD PANEL

POWER PCB

CP406

J401

AC IN CD3805

CD403

CP411

CP412

CD7200

DIGITAL PCB

CP4307

CP7200

CP3400

CP4302

CP6503 CP6504 CP6501

CP3801

CP3802

CP6505

CP301

CD301

AV PCB

CP3601

CP3600

J4300

J4305

TU2800

CP4300

J4202 J4203 J4206

J4207

J4208

J4209

OPERATION PCB

CP2203_1

SPEAKER

CD2201

OS2201

CP2201

REMOCON PCB

CD2202

D-5

(LCD SECTION)

POWER DOES NOT TUNER ON

TROUBLESHOOTING GUIDE

Is F401 broken?

Is there voltage at pin 1 of IC402 6V?

Yes

Is there voltage at pin 10 of IC401 19V?

Yes

Change DIGITAL PCB.

Yes

Change F401.

Check IC402 and peripheral circuit.

Check IC401, R412 and peripheral circuit.

E-1

THE PICTURE APPEARS, BUT THE AUDIO DOES NOT APPEARS. (AT RF MODE)

TROUBLESHOOTING GUIDE

Is CP301 connected?

Yes

Is there signal at pins 1 and 4 of

Is there signal at pins 2 and 14 of IC301?

Is there signal at pins 27 and 28 of IC905?

Yes

Connect CP301.

Change SP301 and SP302.

Check IC301 and peripheral circuit.

Check IC905 and peripheral circuit.

Is there signal at pin 15 of TU2800?

Change TU2801.

Yes

Check signal of pin 15 of TU2800 to pin 67 of IC905.

E-2

THE PICTURE DOES NOT APPEAR (1)

TROUBLESHOOTING GUIDE

Does backlight shine?

Yes

Is CD7200 connected?

Yes

Is there voltage at pin 28,29,30 and 31 of CP7200 12V?

Yes

Is there signal at pins 7, 8, 10, 11, 13, 14, 16, 17, 19 and 20 of CD7200?

Yes

Is there voltage at pins 1, 2, 3, 4 and 5 of CP406 24V?

Yes

Connected CD7200.

Check IC407 and peripheral circuit.

Check D436, D437 and peripheral circuit.

Change V2301(PANEL).

Is there signal at IC3901?

Yes

Check DIGITAL PCB.

Change IC3901.

E-3

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