Daewoo DLP-32G1, DLP-32G1T, DLP-32G1R, DLP-32G1LPB, DLP-32U1 Service Manual

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Service Manual

LCD TV

CHASSIS : SL-601P

Model :

S/M NO. : TSL601PEF1

May 2008

DLP-32G1 DLP-32G1P DLP-32G1R DLP-32G1T DLP-32G1W DLP-32G1LPB

DLP-32U1 DLP-32U1P DLP-32U1R DLP-32U1T DLP-32U1W DLP-32U1LPB

DLP-32U2 DLP-32U2P DLP-32U2R DLP-32U2T DLP-32U2W DLP-32U2LPB

DLP-32C5 DLP-32C5P DLP-32C5PD

DLP-32C7 DLP-32C7P DLP-32C7PB

BLT-32U10A

(TAGAZ OEM)

DLP-37G1 DLP-37G1P

DLP-37C7 DLP-37C7P DLP-37C7PB

DLP-42G1 DLP-42G1P

DLP-42C1 DLP-42C1P

DLP-42C5 DLP-42C5P DLP-42C5PD

DLP-42C7 DLP-42C7P

Contents

1.Safety Precaution 3

2.Product Specification 4

2-1.Product Specification

2-2.Available Input Signal 5

3.Block Diagram 6

4.Description of Each Block 7

4-1.Overview 7

4-1-1.SCART1 RGB 8

4-1-2.SCART2_CVBS 9

4-1-3.AV3_S-VIDEO 9

4-1-4.COMPONENT_Y Pb Pr 10

4-1-5.HDMI 11

4-1-6.PC 11

4-1-7.Sound I2S 13

4-1-8.Sound Output 14

4-2.POWER PCB 14

4-2-1.Input Requirements 14

4-2-2.Output Voltage and Current 15

4-2-3.Ripple and Noise 16

4-2-4.Connectors 17

5.SERVICE MODE 19

6.Main PCB Trouble Diagnosis 20

6-1.Main PCB Trouble Diagnosis 20

6-1-1.Common checking process when “No signal or No raster” 20

6-1-2.When No Sound 27

6-1-3.When Control Key does not operate 29

6-1-4.When Remote Controller does not operate 30

6-2.POWER PCB 32

7.Trouble Diagnosis 33

7-1.Facts you must know when Diagnosis or Repairing 33

7-2.Typical Symptoms of PCB problem or bad connection 34

8.Exploded View 35

9.Service Part List 46

10.Circuit Diagram 54

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-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 a 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, you must turn off power(AC) to prevent any

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 PCBs are working as electric circuit grounding. Make sure to check if any screw is missing when assembling.

(5) A LCD Sets contains different kinds 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) Connecotrs 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.PRODUCT SPECIFICATION

Features 32 inch Model 37 inch Model 42 inch Model

LCD Panel

Screen Size 32" 37" 42"

Aspect Ratio 16 : 9 16 : 9 16 : 9

Resolution 1366x768(WXGA) 1366x768(WXGA) 1366x768(WXGA)

Pixel Pitch

170.25um x 510.75um x RGB

0.200mm x 0.600mm x RGB 0.227mm x 0.681mm x RGB

Contrast Ratio 5000 : 1 5000 : 1 5000 : 1

TV System

Receiving

System

PAL,SECAM, NTSC(AV) PAL,SECAM, NTSC(AV) PAL,SECAM, NTSC(AV)

Stereo

FM MONO / 2-Carrier,

NICAM

FM MONO / 2-Carrier,

NICAM

FM MONO / 2-Carrier,

NICAM

Channel Memory ANALOG : 0~99CH ANALOG : 0~99CH ANALOG : 0~99CH

Input

Connector

RF 75 Ohm Coaxial 75 Ohm Coaxial 75 Ohm Coaxial

S_Video 1 1 1

SCART 2 2 2

Component RCA x 1 RCA x 1 RCA x 1

PC RGB D-Sub x 1 D-Sub x 1 D-Sub x 1

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

HDMI 2 2 2

Output

Connector

Headphone 3.5mm Mini-Jack 3.5mm Mini-Jack 3.5mm Mini-Jack

Sound Output 9W 9W 9W

Power

Consumption

Max

LPL : 115W

Samsung : 135W

150W 200W

Power Source

110VAC~240VAC,

50~60Hz

110VAC~240VAC,

50~60Hz

110VAC~240VAC,

50~60Hz

Dimension(W x H x D)

G series : 806 x 590 x 260 U series : 806 x 588 x 260

C series : 806 x 628.5 x 240

G series : 940 x 682 x 260

C series : 940 x 720 x 328.7

G series : 1044 x 757 x 345 C series : 1037 x 791 x 329

-5-

Product Specification

2-2.Available Input Signal

2-2-1.HDMI/PC/COMPONENT

2-2-2.VIDEO

Note : '1360(6) x 768' is same with '1280 x 768'(Only different from OSD display)

- PAL, PAL-M, PAL-N

- NTSC, NTSC4.43

- SECAM

Resolution

640 x 480

800 x 600

1024 x 768

1360(6) x 768

(1280 x 768)

720 x 480

720 x 480i

720 x 576i

720 x 576

1280 x 720

1920 x 1080i

V-freg

60Hz

HDMI

72Hz

75Hz

60Hz

72Hz

75Hz

60Hz

70Hz

75Hz

60Hz

75Hz

60Hz

50Hz

60Hz

50Hz

60Hz

50Hz

PC(D-Sub) Component Standard

VESA Standard

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3. Block Diagram

.Block Diagram

-7-

SCART1_RGB

SCART2_CVBS

AV3_SVIDEO

COMPONENT_YPbPr

HDMI1/2

4. Description of Each Block

4-1.Overview

Digital PCB is Multi Media circuit board that can process various input signals such as Video, Component, PC, HDMI and analog TV signal.

-8-

Description of Each Block

4-1-1. SCART1_RGB “R signal(input to IC501), LOC : LCA12”

G signal(input to IC501), LOC : LCA11

B signal(input to IC501), LOC : LCA10

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Description of Each Block

4-1-2. SCART2_CVBS CVBS signal(input to IC501), LOC : CA02

4-1-3. AV3_S-VIDEO Y signal(input to IC501), LOC : #14 of IC506

Color signal(input to IC501), LOC : RC515

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Description of Each Block

4-1-4. COMPONENT_YPbPr Y signal(input to IC501), LOC : LCA08

Pb signal(input to IC501), LOC : LCA06

Pr signal(input to IC501), LOC : LCA04

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Description of Each Block

4-1-6. PC R signal(input to IC501), LOC : LC209

4-1-5. HDMI HDMI signal(input to IC 501), LOC : RCA31 ~ RCA38, RCA12 ~ RCA19

G signal(input to IC501), LOC : LC207

-12-

Description of Each Block

B signal(input to IC501), LOC : LC205

Horizontal sync(input to IC501), LOC : LC204

Vertical sync9input to IC501), LOC : LC203

-13-

Description of Each Block

4-1-7. Sound I2S I2S data(output of IC601), LOC : #30 of IC603

I2S L/R clock(output of IC601), LOC : #31 of IC603

I2S B clock(output of IC601), LOC : #32 of IC603

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Description of Each Block

4-1-8. Sound Output

Speaker Output

4-2. Power PCB

4-2-1. Input Requirements

32” & 37”

42”

Input Voltage Range AC90V ~ 264V

Normal Voltage AC 100V ~ 240V

Normal Frequency 50/60Hz

Input Current < 3.5 Arms at 100 Vac input

< 1.4 Arms at 240 Vac input

Inrush Current 230V 80A peak

Earth Leakage Current 0.5mA MAX(250AC)

Input Voltage Range AC 90V ~ 264V

Normal Voltage AC 110V ~ 240V

Normal Frequency 50/60Hz

Input Current <1.8 Arms at 230 Vac input

Inrush Current 230V 80A peak

Earth Leakage Current 0.5mA MAX(250AC)

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Description of Each Block

4-2-2. Output Voltage and Current 32” & 37”

42”

Output Munimum Maximum Output Current

Board Voltage Output Output

MIN NOR MAX

Condition

Voltage Voltage +29Vdc +27.0Vdc +32.0Vdc 0.1A 0.5A 1.0A +24Vdc +22.3Vdc +25.4Vdc 0.1A 6.0A 7.0A PWR-CTL

DEF +12Vdc +11.00Vdc +12.0Vdc 0.1A 1.5A 2.0A ON

+5Vdc +4.75Vdc +5.25Vdc 0.1A 1.5A 2.5A

ST+5Vdc +4.75Vdc +5.25Vdc 0.1A 0.5A 0.6A PWR-CTL

OFF

Output Munimum Maximum Output Current

Board Voltage Output Output

MIN NOR MAX

Condition

Voltage Voltage +30Vdc +27.0Vdc +33.0Vdc 0.1A 0.5A 1.0A +24Vdc +22.3Vdc +25.4Vdc 0.3A 8.0A 9.0A PWR-CTL

DEF +12Vdc +11.00Vdc +12.0Vdc 0.3A 1.2A 2.0A ON

ST+5Vdc +4.75Vdc +5.25Vdc 0.1A 0.2A 0.3A PWR-CTL

OFF

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Description of Each Block

4-2-3. Ripple and Noise

32” & 37”

42”

AC ripple,

Output Voltage Switching ripple

and noise

Output Condition

Name Minimum Maximum

Output Output Continuous

Voltage Voltage +29V +27.0Vdc +32.0Vdc PWR-CTL +24V +22.3Vdc +25.4Vdc ON +12V +11.0Vdc +12.0Vdc 500mVp-p

+5V +4.75Vdc +5.25Vdc MAX LOAD

ST-5V +4.75Vdc +5.25Vdc PWR-CTL

Other Lines Don’t Care OFF

AC ripple,

Output Voltage Switching ripple

and noise

Output Minimum Maximum Condition

Name Output Output

Voltage Voltage Continuous

+30V +27.0Vdc +33.0Vdc PWR-CTL +24V +22.3Vdc +25.4Vdc 500mVp-p ON +12V +11.0Vdc +12.0Vdc MAX LOAD

ST-5V +4.75Vdc +5.25Vdc PWR-CTL

Other Lines Don’t Care OFF

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Description of Each Block

4-2-4 Connectors

A. Panel to Power(CN7,CN8) pin spec

B. Power to Main(CN2, CN3, CN4) pin spec

‘New LPL PANEL(WXN Series) have to be connected on CN8.’

CN7(Old LPL PANEL)

PIN No.

Output

+24V

GND

DIMIMING

INV ON/OFF

N/C

GND

PIN No.

Output

+24V

GND

INV ON/OFF

CN2 CN3

PIN No.

Output

+29V

GND

CN8(SAMSUNG PANEL)

N/C

DIMIMING

N/C

PIN No.

Output

DIMMING

INV ON/OFF

N/C

GND

+5V

+12V

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Description of Each Block

C.CN4

PIN No.

Output

+12V

GND

+5V

PWR ON/OFF

GND

+5V

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