Daewoo SL-210P Service Manual

S/M NO. : DSL210PEF0

Service Manual

LCD TV

CHASSIS : SL-210P

Model : DLP-2612

DLP-3212

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.

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

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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.

-3-

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 H D)	(Contain Stand)

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2-2. Available Input Signal

(1) PC/DVI/COMPONENT

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
				60
1080i(1920			1080)	50
				60
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

-5-

-6-

LCD 26", 32" (Europe )

8M

8M

Block Diagram

TMDS

24 BIT R, G, B

SDRAM

SDRAM

INPUT

Si1 169

DVI

H, V, CLK

DVI RX

PANEL TV SVP

SVP RESET

PC(L,R)

PC L,R

POWER

SW1

3D COMB/

COLOR DECODER/

DOWN

24BIT R, G, B,

DE-INTERLADER/

J-L003

H, V, CLK

R, G, B, H, V

PANEL TV VSP

JEPICO

EL-LV385

PANEL

D-SUB

SCALER/

GUI/PIP/POP

VIDEO

LVDS TX

(SS/AUO)

DIGITAL

ENHANCEMENT

COMPONENT1

Y1,Cb1,Cr1

Y, Cb, Cr

IMAGE

PI5V330

Y2,Cb2,Cr2

COMPONENT2

SW

SW3

24 BIT R,

H,

SOUND1

Y, Cb, Cr

8

SDA5, SCL5

COMP1 L, R

4

SPI

8BIT

SOUND2

COMP2 L, R

or

(CSB, JCLK, SI, SO)

PARALLEL

POWER FAIL

PC L,R

R, G, B, H,

ST9883

PCF8591

MSP_VDD5 (HP_ID)

MONITOR L, R

H,

V

CONVERTER

AD/DA

S/SW1

CVBS OUT3

S/SW2

SCART 2

CVBS3, Y3, C3,

CXA1855

SDA5, SCL5

SDA33,

R3, L3

8 BIT

S/SW2

AUDIO/VIDEO SW

Y, C, CVBS OUT2

POWER DOWN

SCART 1

CVBS2, R2, L2

SVP RESET

S/SW1

PS

VPC3230

CVBS, H, V

SDA 5550M

MICOM

RF L, R

COLOR DECODER

AFT

KEY

MAIN

COMP1 COMP2

IR

TUNER

L, R

L, R

R, G, B, FB

VPC RESET

TTX R, G, B, FB

SDA5,

PI5V330

Not Used

SCL5

MONO

MSP3410

SDA5, SCL5

SW

SDA 6000

AV1

RF L, R

MSP RESET

TELETEXT

CVBS1, Y1, C1, R1, L1

SOUND PROCESSOR

SDA5, SCL5

SDA5, SCL5

S-VHS	MONITOR
	L, R
HP(L,R)	HP L,R	MAIN L,R	PCF8574	SW1	PCF8574	SW3
						16M BIT	2M BYTE
				SW2
HP ID
		L	I/O	VPC RESET	I/O	FLASHROM	SDRAM
L	TDA7480			MSP_RESET

MUTE

BLK ON

			R
	R	TDA7480	DIMM PWM
			MUTE	2005.09.09
			LCD ON

DIAGRAM BLOCK MAIN .1-3

3-2. POWER BLOCK DIAGRAM

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4-1. Block Diagram of main IC and TP

TP564

ICU2

ICU3

TP565

ICJ10

TP566

ICS2

ICU10

TP603

ICL10

TP604

ICS3

ICS1

TP605

PW30

ICD10

TP159

TP160

JP11

TP161

TP246

PW11

TP162

TP247

ICA10

TP248

JP12

PW12

TP494 TP508

ICV10

TP495 TP509

PW7

TP496 TP529

PW15

JP3

PW6

JP206

PW21

PW20

IC603

P204

TP56

TP63

TP149

TP100

IC201

TP57

TP64

P601

TP101

TP58

TP67

TP144

TP102

PW602

TP103

TP143

TP120

TP104

TP121

TP105

IC604

TP106

IC601

TP107

TU1

TP108

TP141

TP109

JP201

JP202

TP27

TP29

TP19

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.

-8-

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

-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

-9-

Color signal (input to ICV10) Location: LCV4

CVBS signal (Input to ICV10) Location: LCV1

Data Enable(Output of ICS1)

Loacation(RCS15, ICD10.73PIN)

-10-

Horizontal sync (Out of ICS1)

Location: RCS12, ICD10.72PIN

Vertical sync (Out of ICS1)

Location: RCS13, ICD10.71PIN

Clock for display (Out of ICS1)

Location: RCS14, ICD10.76PIN

4-2-2. TV signal

Tuner(TU1) receives antenna signal and outputs CVBS and sound signal. For the main signal, IC201 switches out the CVBS and the rest of the signal flow is same as composite video signal flow mentioned earlier.

Also, Sub TV signal at PIP mode flows similar path to the Sub composite video signal pass except that IC201 switches out the CVBS signal

-11-

- Flow Chart of RF CVBS

-Main Signal

A.TU1 : Tuner (Input: antenna signal, Output: CVBS)

B.IC201 : Switching IC (Input: CVBS, Output: CVBS)

C.ICV10 : Vided processor (Input: CVBS, Output: 8bit Digital, H/V)

D.ICS1 : Color Decoder/Image Processor(Input: 24bit Digital R/G/B, H/V, Output: 24bit Digital R/G/B, H/V)

-Sub Signal(In PIP mode)

A.IC201 : Switching IC (Input Input: antenna signal, Output: CVBS)

B.ICS1 : Color Decoder/Image Processor(Input: 24bit Digital R/G/B, H/V, Output: 24bit Digital R/G/B, H/V)

-Main TP (Input: Color Bar Pattern)

CE220, CCV16

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

CVBS signal (Input to IC201)

4-2-3. DTV/DVD signal

Both DTV(Y, Pb, Pr) and DVD(Y, Cb, Cr) share same jack and signal path. Main and Sub in PIP mode have same path. ICI3 switches out signal and also detects type of signal so that ICA10 can convert the analog signal to digital. Then the signal goes through ICS1 for the image processing.

-12-

- Flow Chart of COMPONENT

-Main Signal

A.ICI3 : Switching IC (Input: Component, Output: Component, H/V)

B.ICA10 : A/D converter (Input: Component, H/V, Output: 24bit Digital RGB, H/V)

C.ICS1 : Color Decoder/Image Processor(Input: 24bit Digital R/G/B, H/V,Output: 24bit

Digital R/G/B, H/V)

-Main TP (Input: 576I, Color Bar Pattern)

Y signal (Input to ICA10)

Location: LCA4, RCA12

Pb Signal (Input to ICA10)

Location: LCA5, RCA14

-13-

Pr Signal (Input to ICA10)

Location: LCA3, RCA11

Clock (Output of ICA10)

Location: LCA1, RCA10

Horizontal sync (Output of ICA10)

Location: RCA9

-14-

Vertical sync (Output of ICA10)

Location: RCA8

4-2-4. PC (Personal Computer) signal

PC signal is switched out by ICI3 and input to ICA10 for A/D conversion. Then the signal goes through ICS1 for digital image processing.

- Flow Chart of PC Signal

-Main IC

A.ICI3 : Switching IC (Input: Analog RGB, H/V, Output: Analog RGB, H/V)

B.ICA10 : A/D converter (Input: Analog RGB, H/V, Output: 24bit Digital RGB, H/V)

C.ICS1 : Color Decoder/Image Processor(Input: 24bit Digital R/G/B, H/V, Output: 24bit Digital R/G/B, H/V)

-Main TP (Input: Color Bar Pattern, 1024X768 60Hz)

-15-

R Signal (Input to ICA10) Location: LCA3, RCA11

G Signal (Input to ICA10) Location: LCA4, RCA12

B Signal (Input to ICA10)

Location: LCA5, RCA14

-16-

Clock (Output of ICA10)

Location: LCA1, RCA10

Horizontal sync (Output of ICA10)

Location: RCA9

Vertical sync (Output of ICA10)

Location: RCA8

4-2-5 DVI (Digital Visual Interface) signal

To process DVI signal, graphic card of AV device reads EDID data from ICI5(ROM). Then

DVI signal is directly inputted to ICD10, which output digital 24bit RGB and H/V. The output goes through ICS1 for digital image processing

-17-

- Flow Chart of DVI Signal

-Main IC

A.ICI5 : ROM containing EDID data (EDID: display capabilities such as resolution, aspect ratio etc.)

B.ICD10: DVI signal processor (Input: TMDS, Output: 24bit digital RGB, H/V)

-Main TP (Input: Color Bar Pattern)

Clock (Output of ICD10)

Location: LCD5, RCD5

Horizontal sync (Output of ICD10)

Location: RCD6

-18-

Vertical sync (Output of ICD10)

Location: RCD7

4-2-6. Video Enhancer and LVDS transmitter (for all inputs)

Outputs of ICS1 are inputted to ICJ10(Video signal enhancer, MGDI) which improves picture quality greatly.

Outputs of ICJ10 are inputted to ICL10 which is a LVDS transmitter. The converted LVDS signal is transmitted to the LCD panel.

-Main IC

A.ICJ10: Video enhancer (Input: 24bit digital RGB, H/V Output: 24bit digital RGB, H/V)

B.ICL10: LVDS transmitter (Input: 24bit digital RGB, H/V Output: LVDS signal)

-Main TP

RCJ2: Horizontal sync (Output of ICJ10), refer to RCS12RCJ3: Vertical sync (Output of ICJ10), refer to RCS13

RCJ1 : Data Enable sync (Output of ICJ10), refer to RCS15

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

- Flow Chart of SCART1, TELETEXT R/G/B

- Main TP

-19-

R Signal (Input to ICV10)

Location: LCV10, RCV30

G Signal (Input to ICV10)

Location: LCV9, RCV28

B Signal (Input to ICV10)

Location: LCV8, RCV26

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

IC201 switches Audio signals and passes a switched signal to IC601 for audio signal processing. IC601 controls sound parameters such as Volume, Balance, and Equalize.

-20-

The outputs of IC601 are passed to IC604(right), and IC603(left) respectively to amplify the signals. KEY and LED PCBs send signals received from key buttons and LED to

ICU10 for command processing.

- Flow Chart of Audio Signal

- Main IC

A. IC201: Switching IC

B. IC601: Audio processing IC C. IC603,604: Amplifying IC

MSP3410 INPUT
Location
- Main R sound: CE620, RC621	- Main L sound: CE619, RC620
- Sub R Sound: CE618, RC619	- Sub L Sound: CE617, RC618
- Component1 R sound: CE616, RC617	- Component1 L sound: CE615, RC616
- Component2 R sound: CE614, RC615	- Component2 L sound: CE613, RC614

PC_L Sound (Input to IC201)

Location (CE208, RC253)

-21-

IC604, 605 INPUT

Location: L out(CE605), R out(CE604)

Tuner SIF Input

Location: CC613, TU1.9PIN

HEADPHONE Out

Location: CE636, CE639

-22-

Remote control signal

Location: RCW17, CCW3

4-3. POWER PCB

4-3-1. POWER SPEC Rating: 220V~240V

Regulating Method: Input Frequency: 50Hz

Inrush Current: Below 80A at AC230V Output Voltage and Current are shown below

Board		Output		Minimum output	Maximum output		Output Current		Condition
		Voltage		voltage	voltage		Continuous
		+24Vdc		+22.8Vdc	+25.2Vdc		0-6.0A
		(	5%)				(144Watt)
		+15Vdc		+14.25Vdc	+15.75Vdc		0-1.0A
		(	5%)				(30Watt)		PWR-CTL
DEP		+6Vdc		+5.7Vdc	+6.3Vdc		0-4.0A		ON
		(	5%)				(24Watt)
		+5Vdc		+4.75Vdc	+5.25Vdc		0-2.5A
		(	5%)				(12.5Watt)
		ST+5Vdc		+4.75Vdc	+5.25Vdc		0-1.0A		PWR-CTL
		(	5%)				(5Watt)		OFF

-23-

Ripple and Noise

					Output voltage				AC ripple, Switching
Output									ripple and noise
										Condition
Name			Minimum output			Maximum output			Continuous
				voltage			voltage
+24V				22.8Vdc			25.2Vdc			PWR-CTL
+15V				14.25Vdc			15.75Vdc		500mVp-p	ON
+6V				5.7Vdc			6.3Vdc			Max Load
+5V				4.75Vdc			5.25Vdc
ST+5V				4.75Vdc			5.25Vdc		500mVp-p	PWR-CTL
										OFF
					Other Lines				Don’t Care
4-3-2. Connectors
A. AC Connectors
		P801 (I-SHENG PLASTIC 7003 7.0MM 3P)
		Power Switch Connector
		P802 (YEON-HO YDW236-02P)
		PIN NO.			CONFIGRATION
		1			LIVE Switch PIN1
		2			LIVE Switch PIN2

B. PL11, PL12 pin Spec (HAN JUN A2002WV2-14P 14p)

PL11(SAMSUNG PANNEL)

PIN NO.	OUT PUT
1	+24V
2	+24V
3	+24V
4	+24V
5	+24V
6	GND
7	GND
8	GND
9	GND
10	GND
11	Not Connected
12	INV ON/OFF
13	GND
14	PWM-DIMMING

PL12(AUO)

PIN NO.	OUT PUT
1	+24V
2	+24V
3	+24V
4	+24V
5	+24V
6	GND
7	GND
8	GND
9	GND
10	GND
11	GND
12	INV ON/OFF
13	PWM-DIMMING
14	GND

-24-