DAEWOO SJ-210H DSJ-6000LHM

8/14/2019 DAEWOO SJ-210H DSJ-6000LHM

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1. Safety precautions 2

2. Product specification 4

3. Remocon specification 5

4. Adjustment 7

5. Circuit Manual 11

6. Trouble shooting 27

7. Block diagram 35

8. Exploded View 36

9. Connection diagram 37

10. Engine Disassembly Sequence and Position and Name of Essential Parts 38


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1. Safety precautionsCAUTION : 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 guide-lines. To do otherwise, increases the risk of potential hazards and

injury to the user.

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

SUBJECT : FIRE & SHOCK HAZARD1. 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 relief, 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. plugand 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.


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Safety precautionsGRAPHIC 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 tri-angle 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 equiv-alent

CAUTION : FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH SAMETYPE (4A, 250V)" and

" ATTENTION: AFIN D ASSU UNE PROTECTION PERMANENTE CONTRE LES RISQUES D INCENDIE,

REMPLACER UNIQUE-MENT PAR UN FUSIBLE DE MEME TYPE ET DE " 4A, 250V" .

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 oftrying 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 Monitor. s of the

same or larger screen size.

Caution for servicingWhen the general troubles happen, Remove the back cover of the Monitor set. But , however if the components (the

Air filter, Lamp, Lamp detect switch, or LCD Engine driver PCB, etc) in the front of Monitor set is out of order,

Remove the speaker grill and the front panel of the Monitor set.

Specially, First you have to plug out socket , for exchanging the Fuse of Monitor set,.

When Lamp driver is operated, the high voltage(13~20kV) is generated from the Lamp. Therefore the person only

who has the enough knowledge for the high voltage must handle it with care.


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VIDEOMULTIMEDIA POWER

MENU

RECALL

DOLBY

SOUND

SOUND

MODE

SCREEN

SIZE

MUTE

SCREEN

MODE

SLEEP

VOL VOL


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KEY Button and Function

KEY BUTTON FUNCTION

POWER Use turning on, turning off Monitor

MENU Use it to make picture adjustment, screen format, sound adjustment, input

selection, and utilities.

VIDEO Use this function to make video input selection.

It changes in the fallowing sequence

VIDEO 1 VIDOE 2 VIDEO 3 DVD VIDEO1

MULTIMEDIA PC or DTV can be selected alternately.

Use it when selecting either PC or DTV.Volume Use this function to adjust the volume.

MUTE Use to mute.

SCREEN MODE This feature converts the screen mode each time you press the button

from Normal Bright Soft User

SCREEN SIZE This feature converts the screen size by changing its aspect ratio. Each

time you press the button, it will be change from

Normal Wide Panorama Enlarge(LB) Enlarge(LBS)

DOLBY SOUND This button allows you to choose one of the Pro-logic modes.

Normal Off 3-stereo WideSOUND MODE This feature allows you to choose the mode, Each time the button is pressed,

it rotates from Normal Music Movie News User

RECALL It displays currently its input signal

SLEEP This feature is use to set up the time out of automatic turn off.


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4-1. Adjustment in Production

1) How to Fix Engine.

You measure the range of screen s shifting after assembling set.

But, in case of the range is over spec ( H : 7mm, V: 3mm, Tilt : 2mm), adjust again in Local CH 8(RETMA) of

the factory.

2) Adjustment H/V Position.

You select PC Mode to receive reference signal of VG-828 (Program #. 954 : 720p Pattern. 990 : Display

Position Pattern)

Note : LCD Panel is 720p.

You can adjust screen size and position in operating User Menu ( Horizontal Size & Position, Vertical Size &

Position).

3) White balance adjustment

Input the signal of VG-828 (Program #. 949(PAL) White Window Pattern.(20 20)) to Video 1.

Confirm the initial data of PW364 Mode in SVC Menu.

Adjust the White Balance changing R/G/B Gain after setting signal level 100IRE( 255).

How to adjust temperature of color. : X = 0.265 0.01 0.270 0.01.

You can set Luminance level .

Adjust the White Balance changing R/G/B Bias after setting signal level 40IRE( 102).

Input the signal of VG-828 (Program #. 972(1080i) White Window Pattern.(20 20)) to DTV.Adjust the White Balance changing AD9884 s Register Value(CXA1315A, CXA1315B, CXA1315C) after

setting signal level 40IRE( 102).

Adjust the White Balance changing CXA2101 s Register Value(R-Drive, G-Drive, B-Drive) after setting

signal level 100 IRE( 255).

Confirm the range of White Balance being in limit and measure Luminance value

Set all adjustment after about 5 Min s heatruning

Note : Lamp wattage converted automatically from 160W to 130W after 3 min.

Heatrun must be operated after inputing White_Pattern, (no concerned No Signal)

Note : You select White_Pattern in Test Pattern of SVC Menu.

You select Screen Size is Wide and Screen Mode is Normal.


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4-2. SERVICE MODE

To operate Service : Press the USER Remote controller in order starting with Up Mute RECALL

Mute (You can operate in case of being input signal)

Service Mode

* PW364 (Adjusting Brightness Contrast and White Balance of full imput)

Item Initial Value Description

S Bright 64 Screen Brightness Fixing Value

S Contrast 64 Screen Contrast Fixing Value

R Bias 63 Red Color of Low level signal Adjusting Value

G Bias 63 Green Color of Low level signal Adjusting ValueB Bias 63 Blue Color of Low level signal Adjusting Value

R Gain 63 Red Color of Low High signal Adjusting Value

G Gain 63 Green Color of Low High signal Adjusting Value

B Gain 63 Blue Color of Low High signal Adjusting Value

SVC MAIN (Initial Data of the Service mode)

PW364 (Adjusting Brightness Contrast and White Balance of full input)

AD9884 (Adjusting Brightness Contrast of DTV/ PC input)

CXA2101 (Adjusting Brightness Contrast and White Balance of DTV input)

VPC3230 (Adjusting Brightness Contrast of TV / VIDEO/DVD input)

Test Pattern (Displaying in order R G B W BLK

Lamp Watt (Adjusting Lamp Wattage 160W or 130W)

ENG Control (Adjusting LCD ENGINE UNIT)

Use Time (Total usage time of LCD panel)

Factory Set (operating Initalization)

DSJ6000LHM200209181500 (Model name, micom version)


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AD9884 (Adjusting Brightness Contrast of DTV/ PC input )

CXA2101 (Adjusting Brightness Contrast and White Balance of DTV input)

R Gain 148 Fixing Value RED MIN 148G Gain 148 Fixing Value RED MAX 148 Reading value

B Gain 148 Fixing Value GRN MIN 148 automatically

CLP PL 4 Fixing Value GRN MAX 148 according to

CLP DR 4 Fixing Value BLU MIN 148 adjustment state

Phase 15 Fixing Value BLU MAX 148

ITEM Initial Value Description

CXA1315A 42 Adjusting Red Color of Low level signal Adjusting Value

CXA1315B 40 Adjusting Green Color of Low levelsignal Adjusting Value

CXA1315C 40 Adjusting Blue Color of Low level signal Adjusting Value

ITEM Initial Value Description

Picture 63 Contrast Fixing Value

Bright 8 Brightness Adjusting Value

R Drive 22 Adjusting Red Color of High level signal Adjusting Value

G Drive 18 Adjusting Green Color of high levelsignal Adjusting Value

B Drive 16 Adjusting Blue Color of high level signal Adjusting Value

BLK BTM 15 Fixing Value

VPC3230 (Adjusting Brightness Contrast of VIDEO / DVD input)

ITEM Initial Value

Sub Bright 0 Adjusting Value

Sub Contrast 20 Adjusting Value

Test Pattern

R => G => B => W => BLK

Lamp Watt (160W is 25% brighter than 130W but lifetime of Lamp is shorter)

160W

130W

ENG Control (Adjusting LCD ENGINE UNIT )

GAMMA (NORMAL, Natural1, Natural2) : NORMAL(NO GAMMA compensation ),

NATURAL1=NATURAL2

ROTATION Screen Rotation (0, 90, 180, 270)

COLOR Screen s color compensationsub CPU sub CPU s initalization in Engine Unit


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TEMP Detecting the temperature in the inside of ENGINE

V-T Engine V-T compensation

*Use Time : Total usage time of LCD panel

*Factory Set (Operating Initalization)


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1. Specification / Feature1-1. Product Specification

1-2. Product Feature

1-3. General Block Diagram

2. Power Supply

2-1. Introduction2-2. Block Diagram

2-3. Power Supply Component

2-4. Power Action manual

3. Sound & Audio Amp3-1. Introduction

3-2. I/O Specification

3-3. Block Diagram

3-4. Action Manual

4. Video4-1. Introduction

4-2. Block Diiagram

4-3. Video Circuit Manual

4-4. Video Circuit Structure

5. Engine Drive5-1. Introduction

5-2. Block Diagram

5-3. Action Manual


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1.Specification / Feature

1-1.Product Specification


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1-2.Product Feature

Monitor Turn on/ off : The Lamp featureWhen the main power lamp flickers on green, the screen will gradually turn on. During this instance, the power

button will not operate. When the process is completed, the main power lamp lights on green.

It is LCD-Projection Monitor characteristics that it takes a little while for the video to be displayed on the

screen when it is turned on. This is not malfunctioning; thus, please be patient and wait for a moment.

The degree of brightness will decrease insignificantly after 3 minutes is passed. This is not a breakdown; it is

only using a power saving process to maximize the lamp s lifetime. (Lamp watt : 160W -> 130W)

When the power buttons are pressed, the main power lamp may flicker in green, but the secondary power lamp

may flicker in red and orange alternately. In this case, the Monitor s main power has been erroneously pressed,

or has been turned off improperly by a power stoppage or by any other reason. However, please wait for an

instant, and the Monitor will be back on (the latest 1min. 30sec.) since this is not a malfunctioning of the

product.

Turning off the Monitor set.

Press the power button on the remote controller or that of the Monitor set. Audio and Video will be turned off

and the main power lamp will flash. In green at this time. This is not malfunctioning nor an error; it is just a

process of cooling the lamp off. During this time, the power button will not operate. A red light will light up

after a minute.


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2. Power Supply

2-1. Introduction

The POWER PCB is composed of 140W Power for 60 LCD Projection Monitor(DSJ-

6000LHM) as well as the Power that makes 380V and 18V primary voltage for Ballast.

2-2. Block Diagram(attach)

2-3. Power Supply Component

(1) Input Power : 100V ~ 240Vac, 50/60Hz

(2) Consumption Power : 270W

(3) Power Supply for the secondary side : See the table below.

No. location voltage Function Current remarks

1 T802 D5V Main and Video/Engine Power 1,000mA F/B Line

2 T802 33V Tuning B+ 3mA

3 T802 A5V Main and Video Power 1,000mA

4 T802 12V Main and Video Power 300mA

5 T802 9V Main and Video Power 80mA

6 T802 18V Ballast and PFC Control Power 150mA Primary

7 L805 380V Ballast Power 470mA Primary

8 T802 17.5V Engine Power 300mA

9 T803 7V/10V Engine Fan Power 1,000mA 10V (more than 45 degree

of Engine temperature

10 T803 +15V Audio Power 3,000mA

11 T803 -15V Audio Power 3,000mA

12 T801 ST5V Stand-By Power 600mA

2-4. Power Action manual

(1)Power Supply and Stand-by Power

(1-1) The voltage coming through Bipolar Power Code (PC801) passes through the

Line Filter composed of EMI Filter (L801, L802), X-Capacitor (C801, C803,

C806), and Y-Capacitor (C822, C823) and is rectified and smoothed in the Bridge

Diode (D803, D806, D831, D832) through the Bimetal that is the P303E

Temperature Sensor (Power OFF when Lamp Temperature 125 ~ 135).

(1-2) The smoothed voltage is supplied to the TOP232P that is STAND-BY POWER

IC(1804), and the TRANS secondary winding supplies STAND-BY Power (5V)

for U-COM.


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(2) MAIN Power Operation

(2-1) PWR SWITCH ON(HIGH) Signal is supplied from U-COM to the Base of Q804 viaP805M CONNECTOR, Positive Terminal Relay(Y801) is activated, then Starting

Voltage is supplied to the No.4 pin (Vin) of STR-F6656(IC802, IC803) via R836 and

R844.

(2-2) AC Power is rectified in the Bridge Diode(D801), and is applied to P winding of the

TRANS, and reaches 16V of TRANS Auxiliary Winding (No.7 pin), then Control

Circuit is active by the operation of Start Circuit.

(2-3) The winding voltage of the Auxiliary Winding (No.6 pin) is rectified, 18V is

supplied to IC801(FA5332M) No. 3/16 pins, and the phase of Voltage/Current is

compensated, No.13 Pin Reference Voltage/No. 15 Pin OSC Timing C/R oscillates

internally, and mixed to AND Gate, passes to No.13 pin, and its voltage is elevated

to DC380V from L805 by FET Switching via Debias Stabilization Circuit

(Q801/802). The elevated 380V

is smoothed through Diode(D802), and is supplied to the Ballast via P804B.

(3) Specification of STR-F6656

STR-F6656 is the Hybrid IC for the power of Flyback Converter-type Switching where

Power MOSFET and IC for Control is installed. The characteristics of this IC are parts to

be added are just a few, and various protection functions such as Transient Current

Protection, Transient Voltage Protection, Overheat Protection), and has the Quasi-Resonance function proper for miniaturization and standardization.

The detailed specifications of this IC is as follows.

Pin Number Symbol Name Function

1 OCP/F.B OCP/F.B OCP detection input and Feed Back

2 S Source MOS FET Source

3 D Drain MOS FET Drain

4 Vin Vin Control circuit voltage Input

5 GND GND Ground

Symbol Function

OVP Over voltage protect

TSD Over temperature protect


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(3-1) Power Supply for Vin

When Vin Terminal (No.4 pin) voltage that is charged to C821, C830 through the Starting

Resistance reaches 16V(Typ), the Control Circuit inside the F6656 starts to operate. Here,

the Circuit Current is limited to 100 A(MAX) before F6656 operates, so the high Starting

Resistance (47K ,2W) is used. After F6656 operated, the voltage coming out of D

winding of TRANS (T802, T803) is rectified and smoothed, supplying the stable voltage

to the Vin terminal. Here, dl winding is rectified and smoothed via D812, D816, C821,

and C830, and about 16V is supplied to the Vin terminal (No.4 pin) of F6656.

(3-2) OCP/F.B Terminal (Oscillator, Electrostatic Voltage Control Circuit)

Inside the F6656, there is the Oscillator that generates Pulse signal for controlling

electrostatic voltage in the secondary side by turning ON/OFF the MOSFET using the

charging/discharging of C . When AC input is high or Load Current is low, the inflow of

the current of F/B terminal increases, and ON time decreases. The Oscillator has the

Transient Current Protection Circuit (O.C.P. circuit) of Pulse by Pulse type that controls

the oscillator s output by detecting MOSFET Drain current s peak value per every pulse.

(3-3) D/S Terminal (Driver Circuit)

This Circuit is the circuit that charges/discharges the capacity between Gate-Sources of

Power MOSFET by receiving Pulse signal.

(3-4) Latch Circuit

This Circuit is the circuit that stops Power Circuit by keeping the output of the Oscillator

to LOW when the Over Voltage Protection Circuit (OVP) and Overheat Protection Circuit

(TSD) operate. The Sustaining Current of the Latch Circuit is 400 A(MAX) when Vin

terminal voltage is 8.5V, so if the current over 400 A is made to flow to the Vin terminal,

the Power Circuit keeps normal. This circuit activates the Latch Circuit only when OVP,

TSD Circuit operates or when external signal input is kept over 10 sec, by setting the

delay time in accordance with C inside F6656 in order to prevent erroneous operation

due to Noise, etc. Besides, even though Latch Circuit operates, it is operated inelectrostatic power circuit in the Control Circuit so the Circuit Current gets elevated,

decreasing the Vin terminal voltage dramatically. When Vin terminal voltage gets below

Termination Voltage (10V TYP), the Circuit Current increases again, so Vin terminal

Voltage decreases. That is, Vin terminal voltage increases or decreases between 10V and

6V when Latch Circuit operates, it is possible to prevent Vin terminal voltage rising

Abnormally. To cancel the Latch Circuit, Vin terminal voltage should be decreased to

below 6.5V. Generally, it can be cancelled by turning off the AC power.

(3-5) Overheat Protection Circuit (TSD)

This Circuit is the circuit that operates the Latch Circuit when the Frame

temperature exceeds 150 degrees (TYP). In this circuit, the real temperature detection is


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carried out in the Control System, but MOSFET as well as Control Circuit element is on

the Frame, so the circuit operates same for the overheat of MOSFET.

(3-6) Transient Voltage Protection Circuit (OVP)

This Circuit is the circuit that operates the Latch Circuit when the Vin terminal voltage

exceeds 22V (TYP). Basically, this circuit protects Transient Voltage, but the Vin

terminal is supplied from the TRANS Auxiliary Winding, and this voltage is reportorial

to the output voltage, so it operates when the secondary side out is transient voltage such

as when Control Circuit is open.


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Partition NAME DESCRIPTION

Video L/R The Selected Audio signal of 3 input Video

INPUT Sound DVD L/R, DTV L/R The Audio signal of the DVD & DTV

PC L/R The Audio signal of the PC

I2C SCL, SDA The controlling I2C signal of SOUND IC & DOLBY IC

MAIN L/R The Audio signal L/R

C The Audio signal Center

Sound W The Audio signal Woofer

SL/SR The Audio signal SURROUND L/R

HP L/R The Audio signal HEAD_PHONE

MON L/R The Audio signal MONITOROUTPUT

VOL L/R Volume control L/R SPEAKER

VOL C Volume control CENTER SPEAKER

Control VOL W Volume control WOOFER SPEAKER

VOL SL/SR Volume control SURROUND L/R SPEAKER

A_MUTE AUDIO MUTE

3. Sound & Audio Amp3-1. Introduction

Sound Processor is composed of Switching that selects signal proper to the Select Mode among

Sound Signal of the Video Input (DVD, Input 1/2/3) and the Sound Signal of Graphic (DTV,

PC); and Signal Processor that generates Sound Signal (C, W, SL, SR) which is Dolby decoded

through MAIN L/R Sound Signal and I2C(SCL/SDA) Interface. Besides, it is composed of

Amplifier that amplifies the signal generated by Volume Control Block to the sound signal

proper for speaker capacity.

3-2. I/O Specification

(1) Sound Processor


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3-4. Action manual

Sound Processor is composed of Switching that selects signal proper to the Select Mode

among Sound Signal of the Video Input (DVD, Input 1/2/3) and the Sound Signal of Graphic(DTV, PC); and Signal Processor that generates Dolby Prologic Sound Signal via Sound DSP.

VIDEO_1/2/3 Sound Signal L/R selected

CXA1855 (VIDEO SWITCHING IC), and DVD Sound Signal, a proper sound signal is

selected, then it is outputted to MAIN L/R. In the GRAPHIC, a proper signal is selected in

DPL3519A among the sound signal of DTV and PC, and outputs to MSP3440G, so MAIN

L/R can be selected. Also, D/A converted Sound Digital signal is generated to SERIAL

DATA(SDA, SCL, I2S_WS, I2S_OUT), so Central Sound signal (C) which is DOLBY

PROLOGIC Sound Signal, Woofer Sound Signal (W), and Surround Sound signal(SL/SR) is

generated.

Partition NAME DESCRIPTION

INPUT SOUND PROCESSOR Audio signal (the excepted HP L/R, MON L/R)

L/R Output L/R SPEAKER

OUTPUTC Output CENTER SPEAKER

W Output WOOFER SPEAKER

SL/SR Output SURROUND L/R

3-3. Block Diagram


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In the AMPLIFIER, the signal component that passed Volume Control Block is amplified to

the respective GAIN (MAIN L/R, C, W, SL, SR). L/R SOUND and SURROUND L/R Sound

are adjusted simultaneously, besides L/R Volume Balance can be adjusted. The Sound of

Center and Woofer is adjusted independently, and Volume Balance cannot be adjusted. The

Sound Signal decreased by Internal Volume Control of MS3440G and DPL3519A is

amplified through TDA7265 (25W+25W STEREO AMPLIFIER with MUTE). Main Sound

L/R and Central Sound Signal is connected to each Speaker via connectors, and the Sound

Signal from Woofer and surround is connected to external Jack, then is outputted whenadditional Speaker is connected.


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4. Video

4.1 Introduction

The VIDEO Signal Processing Circuit of DSJ-6000LHM converts PC signal

(VGA~UXGA), DTV signal (Y, Pb, Pr 1080i, 720P, 576P, 480P@50/60Hz), DVD signal

(Y, Cb, Cr 576i, 480i@50/60 Hz), Y/C signal (50/60 Hz) as well as Image Processor

PW364, to HD Video signal (1280 x 720 : Progressive) proper to LCD Projection Monitor

device of this appliance type. It is composed of Video Processor, Digital TV Processor,

Graphic Video Processor, Image Resizing Part (PW364), LVDS Output, CPU Circuit for

System Control.

4-2. Block Diagram

4-3. Video Circuit Manual

(1) Video Processor Circuit

Video Processor receives Video signal whose Y/C Color Difference is separated, then

converts A/D in VPC3230 that is Video Decoder, and processes Component Video Signal

(Y/UV), and converts the Interlaced Video signal received from Line Doubler SDA9400 to

Progress Video signal. Also, DVD signal that is entered in Component Video signal enters

to another terminal, and processed likewise.


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5. Engine Drive5.1 Introduction

The Engine Drive Signal Processing Circuit of this DSJ-600LHM is the circuit for

generating and supplying Video Signal and Driving Signal to activate 3 LCD Panels. It is

composed of RGB Video Processing, Panel Driving Signal Generating, and Panel

Auxiliary Signal Generating sectors.

5.2 Block Diagram

5-3. Action Manual

(1) RGB Video Signal Processing CircuitRGB 10 bit of Digital Video signal (3.3 Vpp) processed by G/A for LCD Panel and

IC(SLA550TH) for compensating Unit is outputted along the LCD Panel connected to LCD

driving board in such a way that 10 bit digital data are converted to the Video Signal for

driving LCD of 2x6 channel their levels are adjusted (10.0Vpp; 2.0V~12.0V) by Serial D/A

Converting IC(M62393).

(2) Panel Driving Signal Generating Circuit

The Panel Driving Timing Signal (3.3Vpp) developed from IC(SLA550TH) for processing

Panel Signal is supplied to the LCD Panel by Level Shifter IC (ET1030F0A) by doing level

shift to Level(15.5Vpp) necessary for driving the Shift Register inside the LCD Panel.


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(3) Panel Auxiliary Signal Generating Circuit

The Panel Driving Auxiliary Signal developed from IC(SLA550TH) for processing PanelSignal is supplied to Panel through 4 each composite Transistor(XN4051) by doing level shift

to the Level(10.0Vpp; 2.5V~ 7.5V) necessary for free-charging the Video Line inside the

Panel by the Level Shifter IC(ET1030F0A).


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No Power On(Timer on/off and the main

power lamp lighting in red)

Check fixing state of air filter

(Power On after removing air filter and

pressing Detect S/W by hand or tape)

Check Fixing state of lamp Door side

(After pulling up Door side, Power On

when pressing Detect S/W on the left

side of engine by hand or tape)

Check whether Sensor (DETECT S/W)is

wrong or not, and fix air filter correctly

After checking Detect S/W is wrong or

not, pull down and fix Door slide

correctly

Replace VIDEO PCB ASSY

Replace POWER PCB ASSY

Check voltage of pin 14 (PWR-CTL) inP612V at Main PCB

Check voltage of pin 1 (PWR) in P605 at

Main PCB

When turning set on, the voltage is more

than 1V in a short time, then it goes to 0V

Check whether all 4 Pins in P619L and

P621L at Main PCB are short

Replace CONNECTOR

OK

OK

0V

0V

Contact badness of P619L, P621L CONNECTOR

NG

NG


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No Power On(Timer on/off and the main power lamp

flickering in red and orange alternately)

Remove lamp and then fix it again Check normal operation

OK

Check output voltage of P804(POWER)

(380V / 18V)Replace Power PCB

Less than 2V

Check voltage of pin 1 (Lamp_On) in

P626C at Main PCBReplace Main PCB

Check voltage of pin 3 (Error) in P626C

at Main PCB

Check voltage of pin 3(32PIN) in

P612V at Main PCB

Replace MAN PCB Replace VIDEO PCB

Replace lamp and then

check mormal operation

Replace LCD ENGINE


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No Power On(Timer on/off and the main power lamp

lighting in orange)

Check if Engine Fan acts for a moment and stops

(Check if air blows to center ventilation hole on

backside of product)

Check voltage of pin 7(7V/10V)

in P806M at Power PCB

Replace Power PCB

Check Short between output

voltages at Power PCB and GND

Replace

LCD ENGINE

Replace

SHORT PCB

Replace MAIN PCB Replace VIDEO PCB

Contact badness

of Connector

Check voltage of pin 5 (ID_1)

in P626C at Main PCB

Check voltage of pin 3 (32Pin) in P612V

at Main PCB

Remove Engine Unit, Check if its

short between pin 3 (Red wire) in

P922E at interior PCB (1x3cm) inEugire and Pin 5 in P626C at main

PCB

The voltage is maneThen DC 5V in a shortTime, then it goes to 0V

POWER ON

NO

0VMore than 0.5V

NO SHORT

SHORT

NO YES

Less than 2V More than 2V

0V


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- 30 -

No Power On(The main power lamp is

not red)

If DRAIN and SOURCE Impedance value approach

0 ohm, replace I804 because it is broken

The main power lamp is not red

FUSE CHECK

I821 CHECK

(POTO COUPLER CHECK)

Check if ST5V is correct.

When pressing Power button, check if

The main power lamp is red

END

I804 CHECK (TOP232P)

R895, R896 SHORT CHECK

D803, D806, D830, D831 DIODE CHECK

D836 CHECK

Check always because its part of feed back


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- 31 -

No Power on(the main power lamp is red.

stand-by Power is on)

Check I802 18V Regulator Replace

Replace 5332 Module END

END

When part is destroyed by lightning and shock, D801, Q803, FUSE is easily damagedI802 is often destroyed by shock of the primary and the secondary

Check normal voltage

END

Check voltage waveform of Q803

SPEC.3.3V, (if it is more than 1.5V:Normal

operation), if less than 1.5V:Check path of

MAIN. VIDEO Circuit

Check P805M WAFER Power ON/OFF

Check Q804 Tr, D829 SHORT TEST

Check if POWER CORD is OPEN

Check D801

Check Q803


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- 32 -

No Display

(DTV / PC Input)

When pressing Menu

button, is OSD displayed?

check LVDS of IC225E

#2,3 #5,6 #8,9 #11,12

Check output of CLK in IC213

Check Sync Output in IC216

ClK : #3, H_sync : #6, V_sync: #3

Check CLK output and Sync in IC217

CLK : IC213 #2

H_sync : IC216 #5, V_sync : IC216 #2

Check R,G,B output of IC226

R : #35, G : #37, B : #39

Check signal output of DTV

and PC and Set Connection

Check sync output in IC227

H_sync : #3, V_sync : #6

Check DTV/PC_SEL signal#9, 10 of IC224

DTV(high), PC(low)

Check H_sync output of IC236 #7 &

V-sync output of IC228

H_sync : #7, V_sync : #3

Check P211M DTV input

Y : #17, Pb : #19, Pr : #21

Check connection between#17,19,21

of P211M and #1(Y), #2(Pb)

#3(Pr) of J108

Is No Signal displayed?

If pressing recall key, does

correct resolution to input signal ?

Check R,G,B output of IC227

R: #14, G:#15, B:#4

Check DTV/PC_SEL signal

#9,10,11, of IC230

DTV(high), PC (low)

Check PC input of P211M

H_sync: #29, V_sync : #31R : #23, G : #25, B : #27

Check Y, Pb, Pr, SCP input of P226

Y : #5. Pb : #4, Pr : #3, SCP : #31

Check connection between#23,25,27,29,31

of P211M and #1,3,5,7,9 of P913M (side

jack)

Does Power LED operate

normally in green?

Lamp, Fan,

Abnormal Power

1

END END

IC216 abnormal

1


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- 33 -

No Display

(VIDEO / DVD)

LAMP, FAN, Power abnormalDoes Power LED operate normally in green?

When pressing Menu button, is OSD

displayed normally?

VIDEO Screen is off

Check U101 (1855) output

(#19-C, #21-Y, #23-V)

Check after Q106, Q107 Repair

(#E-C, #E-Y)

Is IC219 (3230) output correct?

(#Y0~#Y7, #C0~#7)

Check after IC218 (9400) repair

(#VPT00~#VPT20)

Check after

repair Check Input signal

(480i)

Check after

connection

Only DVD Screen is off

Check IC219 (3230) input

(#4-B, #5-G, #6-R)

Check after IC219 Repair

(#Y0~#Y7, #C0~#C7)

Repair Engine BOARD

Check IC217 (PW364) output

(#DPT00~#DPT23)

Check IC220 (LVDS IC) output

(#LVDS00~#LVDS09)

Check U104 (1232) output

(#5-Y/V,#6-C)

repairIs all Screens not displayed?

(VIDEO / DVD)


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- 34 -

No SOUND

Check SOUND MUTE

Check each input CABLE

Check input signal

AUDIO AMP

Check input/output

END

MAIN L/R : IC601(#27,28) CENTER : IC602(#28)

WOOFER : IC601(#30) SURROUND L/R : IC602(#24,25)

HEADPHONE : IC601(#36,37)

Video Input 1/2/3 Check U101 (#20,22) output Check IC601 (#47,48) Signal

DVD Check P610A (#10,11) path Check IC601 (#50,51) Signal

HDTV Check P610A (#15,16) path Check IC602 (#50,51) Signal

MAIN N/R INPUT : IC604(#7, 11) OUTPUT : IC604(#2, 4)

CENTER/WOOFER INPUT : IC605(#7, 11) OUTPUT : IC604(#2, 4)

SURROUND L/R INPUT : IC606(#7, 11) OUTPUT : IC604(#2, 4)

PC Check P613S (#11,13) path Check IC602 (#53,54) Signal

Check SPEAKER CONNECTOR

Check IC601 & IC602 output


36/44

-35-

Z86129

(caption/rating)

DSJ-6000LHM


37/44


38/44

-37-

DSJ-6000LHM


39/44

- 38 -

10. Engine Disassembly Sequence & Position and Name of Essential Parts

Door Lamp

Controller Panel

Front Panel

Air Filter

Refer to the Photograph provided.

Pull off the speaker grill beginning from the

most exterior part.

Figure1. Product Features and each parts name After Remove Frame Net


40/44

Engine Disassembly Sequence & Position and Name of Essential

Controller Panel

Cover Engine F

Door Slide

Loose 3 screws(+)

at points of figure1, and

remove the controller panel

Loose 7 screws(+) at points of Figure1 and remove the front panel

Figure2. Remove Controller Panel

Figure3. Remove Front Panel

- 39 -


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In case of the Cover Engine F, loose 6screws(+) at points of figure3 and remove it.

Figure4. Remove Cover Engine F

In case of the Lamp, loose 2 screws(-) at point of figure4 and remove it.

In case of the Engine, loose 4 screws(+) at point of figure4 and remove it.

Figure5. Remove Lamp

- 40 -


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Air Filter

Detect S/W 1

assembly

direction

7-1. AIR FILTER side figure

When assemble the door filter, stick it to the unit completely to assembly direction

Door Slide

Detect S/W 2

Sliding

direction

7-2. DOOR FILTER side figure

When assemble the door slide, put it down completely to slicling direction

- 41 -


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1

2

7-3. S/W figure

Movement of lever (still), that presses lever (plastic) causes S/W operation.

- 42 -


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Documents

DAEWOO SJ-210H DSJ-6000LHM