Daewoo DLP-2612 Bedienungsanleitung

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.

Service Manual

LCD TV

CHASSIS :

Model :

S/M NO. : DSL210PEF0

SL-210P

DLP-2612

DLP-3212

NOV. 2005

Contents

1. Safety Precaution 3

2. Product Specification 4

2-1. SPECIFICATION 4

2-2. Available Input Signal 5

3. BLOCK DIAGRAM 6

4. Description of Each BLOCK 8

4-1. Block Diagram of Main IC and TP 8

4-2. OVERVIEW 8

4-2-1. Y/C(S-Video) and SCART(CVBS,RGB) 8

4-2-2. RF CVBS 11

4-2-3. DTV/DVD Signal 12

4-2-4. PC Signal 15

4-2-5. DVI Signal 17

4-2-6. Video Enhancer and LVDS transmitter 19

4-2-7. R/G/B PROCESSING (SCART1. TELETEXT R/G/B) 19

4-2-8. Audio signal processing, KEY and LED 20

4-3. POWER PCB 23

5. SERVICE MODE 26

5-1. Check initial Menu Data 26

5-2. Entering SERVICE MODE 27

6. White Balance Adjusting Method 29

7. Main PCBs Trouble Diagnosis 30

7-1. MAIN & SUB PCB Trouble Diagnosis 30

7-1-1. When No Signal or No raster 30

7-1-2. When No Sound 37

7-1-3. When Control KEY does not operate 39

7-1-4. When Remote Controller does not operate 40

7-2. POWER PCB 41

8. Trouble Diagnosis 42

8-1. Facts you must know when Diagnosis and Repairing 42

8-2. Typical Symptoms of PCB problem or bad connection 43

9. Structure of LCD Set 44

10. Service part list 49

10-1. DLP-2612APSB Part List 49

10-2. DLP-3212APSB Difference Part List 60

11. SCHEMATIC DIAGRAM 62

12. EXPLODED VIEW 77

-2-

-3-

1. Safety Precautions

(1) When moving or laying down a LCD Set, please deal with care. Avoid any impact towards

the LCD Set.

(2) Do not leave the broken LCD Set on for a long time. To prevent any further damages, after

check the broken Set’s condition, make sure to turn the power (AC) off.

(3) When opening the BACK COVER, turn off the power (AC) to prevent electric shock.

(4) When loosening screws, check the connecting position and type of the screw. Sort out the

screws and store them separately. Because screws holding PCB are working as electric

circuit GROUNDING, make sure to check if any screw is missing when assembling.

(5) A LCD Set contain different kind of connector cables. When connecting or disconnecting

connector cables, check the direction and position of the cable beforehand.

(6) When disconnecting connectors, unplug the connectors slowly with care.

(7) Connectors are designed so that if the number of pins or the direction does not match,

connectors will not fit. When having problem in plugging the connectors, make sure to check

their kind, position, and direction.

-4-

2. Product Specification

2-1. SPECIFICATION

DLP-2612 DLP-3212

LCD Panel Screen Size 26” 32”

Aspect Ratio 16:9 16:9

Resolution 1366 768 (WXGA) 1366 768 (WXGA)

Pixel Pitch 0.4215mm 0.51075mm

Contrast Ratio 800:1 800:1

TV System Receiving System PAL, SECAM PAL, SECAM

Stereo System 2-Carrier/NICAM 2-Carrier/NICAM

Channel Memory 99ch, Auto Preset 99ch, Auto Preset

INPUT Connector RF 75 Ohm Coaxial 75 Ohm Coaxial

S-Video 1 1

Scart 2 2

Component RCA 2 RCA 2

PC RGB D-Sub 1 D-Sub 1

PC Audio 3.5mm Mini-Jack 3.5mm Mini-Jack

DVI 1 1

OUTPUT Connector Monitor-out 1 1

Headphone 3.5mm Mini-Jack 3.5mm Mini-Jack

RF-out 1 1

SOUND OUTPUT 8W 8W

Power Consumption Max. 140W 170W

Power Source 220-240V~50Hz 220-240V~50Hz

Dimension Set Dimension (850 518 231)mm (990 588.5 231)

(W HD) (Contain Stand)

-5-

2-2. Available Input Signal

RESOLUTION V-freq DVI D-SUB COMPONENT REMARK

640 480 60 IBM, VGA

66 APPLE, MAC66

72 VESA

75 VESA

720 400 70 IBM, VGA

85 IBM, XGA2

800 600 60 VESA

75 VESA

85 VESA

832 624 74 MAC74

1024 768 60 VESA

70 VESA

720P(1280 720) 50

1080i(1920 1080) 50

576P(704 576) 50

480P(720 480) 60

576i(704 576) 50

480i(720 480) 60

(2) VIDEO

- PAL, PAL-M, PAL-N

- NTSC, NTSC4.43

- SECAM

(1) PC/DVI/COMPONENT

-6-

Not Used

LCD 26", 32" (Europe ))

Block Diagram

DVI

D-SUB

COMPONENT1

SOUND1

SCART 2

AV1

SCART 1

S-VHS

PC(L,R)

Si1 169Si1 169

DVI RXDVI RX

TMDS

INPUT

BA7657BA7657

SWSW

MSP3410MSP3410

SOUND PROCESSORSOUND PROCESSOR

MST9883MST9883

AD CONVERTERAD CONVERTER

VPC3230VPC3230

COLOR DECODERCOLOR DECODER

PI5V330PI5V330

SWSW

PCF8574PCF8574

I/O

PCF8591PCF8591

AD/DAAD/DA

EL-LV385EL-LV385

LVDS TXLVDS TX PANELPANEL

(SS/AUO)(SS/AUO)

TDA7480TDA7480

R, G, B, H, V

8M8M

SDRAMSDRAM 8M8M

SDRAMSDRAM

PANEL TV VSPPANEL TV VSP

PANEL TV SVPPANEL TV SVP

3D COMB/3D COMB/

COLOR DECODER/COLOR DECODER/

DE-INTERLADER/DE-INTERLADER/

SCALER/SCALER/

GUI/PIP/POPGUI/PIP/POP

DIGITALDIGITAL

IMAGEIMAGE

CXA1855CXA1855

AUDIO/VIDEO SWAUDIO/VIDEO SW

SW1

PC L,R

24 BIT R, G, B

8 BIT

H, V, CLK

SDA5, SCL5

MSP RESET

SDA 5550MSDA 5550M

MICOMMICOM

512K BYTE512K BYTE

FLASHROMFLASHROM

CVBS, Y, C OUT1

CVBS3, Y3, C3,

R3, L3

MONITOR CVBS OUT3

MAIN L,R

MONITOR

L, R

MONITOR L, R

CVBS2, R2, L2

RF CVBS OUT

SIF

CVBS1, Y1, C1, R1, L1

MAIN L, R

COMP1 L, R

RF L, R

24BIT R, G, B,

H, V, CLK

SVP RESET

PC L,R

Y, C, CVBS OUT2

VPC RESET

R, G, B, FB

TTX R, G, B, FB

R, G, B, FB

SW2

SDA5, SCL5

8BIT

PARALLEL

SDA5, SCL5 SDA33,

SDA5, SCL5

POWER FAIL

MSP_VDD5 (HP_ID)

S/SW1

S/SW2

Y, Cb, Cr

CVBS, H, V

AFT

SUB L, R

POWER

DOWN

MUTE

SW1

SW2

MSP_RESET

VPC RESET

BLK ON

DIMM PWM

MUTE

LCD ON

SDA5,

SCL5

2005.09.09

HP L,R

HP(L,R) HP ID

RF CVBS

KEY

SVP RESET

POWER DOWN

Y, Cb, Cr

R, G, B, H,

J-L003J-L003

JEPICOJEPICO

VIDEOVIDEO

ENHANCEMENTENHANCEMENT

SDA 6000SDA 6000

TELETEXTTELETEXT

16M BIT16M BIT

FLASHROMFLASHROM 2M BYTE2M BYTE

SDRAMSDRAM

COMPONENT2

SOUND2

Y, Cb, Cr

MAIN

TUNER SUB

TUNER

AFT

PI5V330PI5V330

SWSW

Y1,Cb1,Cr1

COMP2 L, R

COMP1

L, R

SUB CVBS

SW3

COMP2

L, R

Y2,Cb2,Cr2

MONO

PCF8574PCF8574

I/O

SDA5, SCL5

SW3

SPI

(CSB, JCLK, SI, SO)

S/SW2

S/SW1

Not Used

3-1. MAIN BLOCK DIAGRAM

-7-

3-2. POWER BLOCK DIAGRAM

-8-

TP564

TP565

TP566

ICS2

TP603

TP604

TP605

PW30 TP159

TP160 JP11

TP161 TP246

PW11 TP162 TP247

TP248 JP12

PW12 TP494 TP508

TP495 TP509

PW7 TP496 TP529

PW15 JP3

PW6

PW21 PW20 P204

TP56 TP63

TP149 TP100 TP57 TP64

P601 TP101 TP58 TP67

TP144 TP102

PW602 TP103

TP143 TP120 TP104

TP121 TP105

TP106

TP107

TP108

TP141 TP109

JP201 JP202 TP27

TP29

TP19

IC201

IC604

IC603

TU1

ICA10

ICV10

JP206

IC601

ICU3

ICD10

ICL10

ICJ10

ICS3 ICS1

ICU10

ICU2

4-1. Block Diagram of main IC and TP

4-2. Overview

A/V block (Main and Sub PCB) is Multi Media circuit board that can process various input

signals such as video, component, PC, DVI, and analog TV signal. It is mainly composed

of switching, sync processing, decoding, analog TV, digital image processing, and system

control part.

4-2-1. Composite video, Y/C(S-Video) and SCART(CVBS, RGB) composite video

Y/C(S-Video) and SCART(CVBS) have similar signal paths. For the Main signal, IC201

receives these inputted signals and switches out a selected signal. Then the signal goes

into ICV10 for video processing, SCART(RGB) signal goes directly into ICV10. The output

of ICV10 goes through ICS1 for de-interlacing and digital image processing respectively.

However, at PIP mode, sub signal has a little bit different path from the Main signal. First of

all, IC201 receives input signals such as composite video, Y/C or etc, and switches out the

selected signal like as the Main signal. But the selected signal goes into ICS1 for video

processing and image processing instead of going into ICV10.

-9-

- Main Signal

A. IC201 : Switching IC (Input: analog inputs, Output:: an analog output)

B. ICV10 : Color Decoder (Input: Y/C, CVBS, R/G./B, Output: 8bit digital, H/V)

C. ICS1 : Color Decoder/Image Processor(Input: 8bit Digital or 24bit Digital R/G/B,

H/V,Output: 24bit Digital R/G/B, H/V)

-Main TP (Input: Color Bar Pattern)

★CCV15(Y Signal), CCV14(C Signal), CCV16(CVBS Signal)

★RCS12(Horizontal sync), RCS13(Vertical sync), RCS14(Clock) RCS15(Data enable)

-Sub Signal(In PIP mode)

A. IC201: Switching IC (Input: analog inputs, Output: an analog output)

B. ICS1: Color Decoder/Image Processor (Input: 8bit Digital or 24bit Digital R/G/B,

H/V,Output: 24bit Digital R/G/B, H/V)

Y signal (input to ICV10)

Location: LCV13

-Flow Chart of RF, Video, S-Video Signal

-10-

Color signal (input to ICV10)

Location: LCV4

CVBS signal (Input to ICV10)

Location: LCV1

Data Enable(Output of ICS1)

Loacation(RCS15, ICD10.73PIN)

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