DAEWOO DLA-32C7LMBD, DLZ-37C7LMBD, DLA-42C7LMBD Service Manual

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. : TSL230AEF0

DLA-32C7LMBD DLA-37C7LMBD DLA-42C7LMBD

MAR. 2007

SL-230A

Contents

1. Safety Precaution 3

2. Preliminary Troubleshooting 4

3. Product Specification 5

1) Standard of Product 5

2) Available Input Signal 6

3) Available PIP Mode 6

4) Closed Caption Specification 7

5) V Chip(Parent Control) Specification 8

4. Service Remote Controller 9

1) Key Arrangement 9

2) EEPROM Data 10

5. Block Diagram 13

6. Hardware Troubleshooting : Digital Board 14

7. Hardware Troubleshooting : SMPS 18

1) FEL-3237A : DLA-32/37C7LMBD 18

2) FEL-42C2 : DLA-42C7LMBD 20

8. Bill Of Materials 22

1) DLA-32C7LMBD 22

2) Different Materials Besides Mechanical Parts 31

9. How to S/W Upgrade Tools 32

1) Requirements 32

2) Outline of the S/W upgrade tool, which is DTV_Updater.exe 32

3) How to upgrade decoder of LCD TV 33

4) How to upgrade PIC micom of LCD TV 37

10. Schematics : Digital Board 42

11. Schematics : SMPS 51

1) FEL-3237A : DLA-32/37C7LMBD 51

2) FEL-42C2 : DLA-42C7LMBD 52

12. Mechanical Development Figure 53

1) DLA-32C7LMBD 53

2) DLA-37C7LMBD 54

3) DLA-42C7LMBD 55

13. Hanger Unit Manual

-2-

1. Safety Precaution

-3-

(1) When moving or laying down a LCD Set, at least two people must work together. 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

checking the condition of the broken Set, 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 position and type of the screw. Sort out the screws and

store them separately for reassembling. Because screws holding PCBs are working as electric circuit grounding, make sure to check if any screw is missing when assembling / reassembling. Do not leave any screws inside the set.

(5) A LCD Set contains different kinds of connector cables. When connecting or disconnecting

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

(6) Connect/disconnect the connectors slowly with care especially FFC (film) cables and FPC

cables. Do not connect or disconnect connectors instantaneously with force, and handle them carefully for reassembling.

(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, check their kind, position, and direction.

2. Preliminary Troubleshooting

-4-

1) LCD TV does not response or remote controller does not work.

- Check the power cord to be plugged.

- Check the battery of the remote controller.

2) Sound is discontinuous or broken sometimes.

- Check if [SOUND] -> [AVC] is [ON].

- Set the sound effect into 'F Mono'.

- Set the [SOUND] -> [Digital Volume] into proper value.

- [Digital Volume] is enabled only in digital program.

3) Picture of digital program is sometimes broken and sound is discontinuous.

- Digital program has a little problem because of signal receiving status.

- Check if the RF cable is correctly connected.

- Ask for the broadcasting station if the RF cable connection has no problem.

4) Picture of analog program is noisy.

- Check the RF cable connection.

- Check if [Picture] -> [Noise Reduction] is ON.

- Change the [Channel] -> [Fine Tune] value.

5) Sound is not generated in HDMI mode.

- Reconnect HDMI jack.

- DVI signal has no sound. Check the output signal of device to be connected to LCD TV.

- If you want to use DVI-HDMI cable, you should also connect audio cable into the LCD TV.

6) In spite of 'Auto Setup', picture size is not completely adapted to the screen in PC mode.

- Check if the input signal is available.

- Ensure that the desktop has no black area.

- Some errors (picture position problem) will be occurred according to certain video card. In this case, you should adjust 'Frequency' control.

7) In spite of 'Auto Setup', picture is not clear in the PC mode.

- Adjust 'Phase' control.

3. Product Specification

-5-

1) Standard of Product

Owing to our policy of continuous improvement, specifications may change.

Features DLA-32C7LMBD DLA-37C7LMBD DLA-42C7LMBD

LCD Panel Panel Model LC320W01-SL01 LC370WX01-SL01 LC420W05-SL01

Screen Size 81.28 cm 93.98 cm 106.68 cm

Aspect Ratio 16:9

Resolution 1366 x 768 (WXGA)

Pixel Pitch

170.25µm X 510.75µm 0.200mm X 0.600mm 0.227mm X 0.681mm

Contrast Ratio 3000 : 1 (MAX)

TV System Receiving NTSC, ATSC

System

LVDS Cable FL-X30SSL-HF

LVDS B+ +12V

Input Connector RF 75 Ohm Coaxial

S-Video / Video 2

Component RCA X 2

PC RGB D-Sub X 1

PC Audio 3.5 mm Mini-Jack

HDMI 1

Output SPDIF Optical- Jack

Connector Headphone X

Monitor - out 1

Sound Output Max. 10W

Power Module Model FEL-3237A FEL-3237A FEL-42C2

Power Max. 120 W 170 W 200 W

Consumption Power Source CA 110 - 240V~, 50/60Hz

Dimension Set Dimension

806 X 628.5 X 240 940 X 720 X 328.7 1037 X 791 X 329

(W x H x D) (with stand)

Product Specification

-6-

2) Available Input Signal i) TVMode

Ø Color Standard : NTCS, ATSC Ø Reception Channel : Ch 2~13 (VHF), Ch 14~69 (UHF), Ch 1, 14~125(Cable) Ø Sound Transmission System : FM Mono, 2 Carrier, Dolby Digital Ø IF &Subcarrier :

G PIF : 45.75MHz G SIF : 41.25MHz G Sound Subcarrier : 4.5MHz, 4.72 MHz G Color Subcarrier : 3.58MHz G DTV IF : 44MHz (5.38 MHz)

ii) Multimedia Mode

*Multi Input Resolution Aviable in LCD TV

Resolution V-freq HDMI PC Component Standard

640 X 480 60Hz O O X VESA Standard

75Hz O O X VESA Standard

800 X 600 60Hz O O X VESA Standard

75Hz O O X VESA Standard

1024 X 768 60Hz O O X VESA Standard

75Hz O O X VESA Standard

1280 X 1024 60Hz O O X VESA Standard

1360 X 768 60Hz O O X VESA Standard

720 X 480i 60Hz X X O

720 X 480P 60Hz O X O

1280 X 720P 60Hz O X O

1920 X 1080i 60Hz O X O

3) Available PIP Mode

MODE Analog RF Digital RF VIDEO 1 VIDEO 2 COMP 1 COMP 2 HDMI PC

ATV X X X X OOXX

DTV X X OOOOXX

VIDEO 1 X O XXXXXX

VIDEO 2 X O XXXXXX

COMP 1 OOXXXXXX

COMP 2 OOXXXXXX

HDMI X XXXXXXX

PCXXXXXXXX

Product Specification

-7-

4) Closed Caption SPEC i) DIGITAL(ATSC) standard inspection pattern :

CC708 SPEC STREAM(release to GUMI factory : 2007.02.02) ii) The Caption feature doesn’t work in COMPONENT, HDMI, and PC modes. iii) The availability of captions depends on the program being broadcast. iv) Caption lables and respective meanings.

Ø Analog (NTSC) :

G CC1 : The Primary Synchronous Caption Service.

These are captions in the primary language that must be in sync with the sound, preferably matched to a specific frame.

G CC2 : The Special Non-Synchronous Use Captions.

This channel carries data that is intended to augment information carried in the program.

G CC3 : Secondary Synchronous Caption Service.

Alternate program-related caption data, typically second language captions.

G CC4 : Special Non-Synchronous Use Captions.

Similar to CC2.

Ø Digital (ATSC) :

G Service 1 : Primary Caption Service This service contains the verbatim,

or near-verbatim captions for the primary language being spoken in the accompanying program audio.

G Service 2 : Secondary Language Service.

This service contains caption in a secondary language which are translations of the captions in the Primary Caption Service.

G The other service sub-channels are not pre-assigned.

It is up to discrition of the individual caption provider to utilize the remaining service channels.

v) Caption style

Ø Default means to follow the standard set by the broadcaster.

G Text Size : This option consists of Default,Small,Standard,and large.

The default is Standard.

G Text Font : This option consists of Default,

Font 1~7.You can change the font you want.

G Text Color : This option consists of Default, White, Black, Red, Green, Blue, Yellow,

Magenta, and Cyan. You can change the color of the letter.The default is White.

G Text Opacity : This option consists of Default, Rich, Light, and Transparent. G BG Color : This option consists of Default, White, Black, Red, Green, Blue, Yellow,

Magenta, and Cyan. You can change the background color of the caption. The default is Black.

G BG Opacity : This option consists of Default, Rich, Light, and Transparent.

You can change the background opacity of the caption.

Product Specification

-8-

5) V Chip(Parental Control) SPEC i) The rating doesn't work in PIP/POP mode. Reservse case is the same. ii) The rating setting is possible only on the menu. iii) Inital password : 2-2-1-1. iv) Universal key cord (When user does not know password) : 5-4-2-2. v) The TV Parental Guidelines.

Ø Labels : TV-Y, TV-Y7, TV-G, TV-PG, and TV-14, TV-MA, FV, D, L, S, V

G TV-Y : All Children. Program is designd to be appropriate for all children. G TV-Y7 : Directed to Older Children.

Program is designd for children age 7 and above.

G TV-G : General Audience.

This Program contains material that parents ma find suitable to yonger children.

G TV-PG : Parental Guidance Suggested.

This Program contains material that parents may find.

G TV-14 : Parents Strongly Cautioned.

This Program contains some material that many parents wound find unsuitable for children under 14 years of age.

G TV-MA : Mature Audience Only.

This Program is specifically designd to be viewed by adults and therefore may be unsuitable for children under 17.

G FV : Fantasy violence / D : Sexually Suggestive Dialog / L : Adult Language /

S : Sexual situation / V : Violence

vi) The Movie ratings

Ø Labels : TV-Y, TV-Y7, TV-G, TV-PG, and TV-14, TV-MA, FV, D, L, S, V

G G : General Audiences.All ages admitted. G PG : Parental Guidance Suggested.

Some material may not be suitable for children.

G PG-13 : Parents Strongly Cautioned.

Some material may be inappropriate for children under 13.

G R : Restricted.

Under 17 requires accomanying parent or adult guardian.

G NC-17 : No children 17 and under admitted. G X : Adults only. G NR : Not rated.

4. Service Remote Controller

-9-

1) Key Arrangement



Chset/Gumi

Recall

HEAT-RUN

SVPPX

DEMDA/CH

Pattern

MISC

Volume

Panel

W/B

PreScale

Reset

Service Remote Controller

-10-

2) EEPROM Data

Key Content Default Value Description

S2 ChSet EDID & Ch Set 0 EDID & CH Update

in Gumi only

S3 Volume Volume Test 0

S4 SVPPX NTSC Sub Brt 0x20 ATV Bright Control

NTSC Sub Cont 0x80 ATV Contrast Control

AV Sub Brt 0x20 Video Bright Control

AV Sub Cont 0x80 Video Contrast Control

Video Sub Cb Sat 0x80 Video Cb Color

Video Sub Cr Sat 0x80 Video Cr Color

Video Sub Hue 0x0 Video Hue

Video YC Delay 0x0 Video YC Delay

Pedestal ON Pedestal Level ON/OFF

Chroma AGC 0x8A Sub Carrier AGC

CVBS AGC ON CVBS AGC

Anti-alias OFF Anti-alias ON/OFF

PC G Clamp 0x44 PC G Clamp Level Control

PC B Clamp 0x44 PC B Clamp Level Control

PC R Clamp 0x44 PC R Clamp Level Control

PC G Gain 0x50 PC G Gain Control

PC B Gain 0x50 PC B Gain Control

PC R Gain 0x50 PC R Gain Control

Com 480i Y Clamp 0x30 480i Y Clamp Level Control

Com 480i Pb Clamp 0x200 480i Pb Clamp Level Control

Com 480i Pr Clamp 0x200 480i Pr Clamp Level Control

Com 480i Y Gain 0x50 480i Y Gain Control

Com 480i Pb Gain 0x50 480i Pb Gain Control

Com 480i Pr Gain 0x50 480i Pr Gain Control

Com HD Y Clamp 0x30 480p~ Y Clamp

Com HD Pb Clamp 0x200 480p~ Pb Clamp

Com HD Pr Clamp 0x200 480p~ Pr Clamp

Com HD Y Gain 0x50 480p~ Y Clamp

Com HD Pb Gain 0x50 480p~ Pb Clamp

Com HD Pr Gain 0x50 480p~ Pr Clamp

Sync Threshold 0x0 Component Sync Slicing Level Control

S5 PQ Dp B/L Cont 0 Black & White Contrast

Main CVBS Cont 123 Main Picture CVBS Contrast

Main CVBS Bright 121 Main Picture CVBS Brightness

Main DTV Cont 130 Main Picture DTV Contrast

Main DTV Bright 112 Main Picture DTV Brightness

Main HDMI Cont 128 Main Picture HDMI Contrast

Main HDMI Bright 128 Main Picture HDMI Brightness

Main Comp PC Cont

130 Main Picture COMP & PC Contrast

Service Remote Controller

-11-

Key Content Default Value Description

Main Comp PC Bright

112 Main Picture COMP & PC Brightness

PIP CVBS Cont 123 Sub Picture CVBS Contrast

PIP CVBS Bright 118 Sub Picture CVBS Bright

PIP DTV Cont 130 Sub Picture DTV Contrast

PIP DTV Bright 112 Sub Picture DTV Brightness

PIP COMP Cont 130 Sub Picture COMP Contrast

PIP COMP Bright 112 Sub Picture COMP Brightness

Dp Hue 63 Main Picture Tint Control

Main V Delay 8 Main Picture Cr Delay

Main U Delay 8 Main Picture Cb Delay

Sub V Delay 8 Sub Picture Cr Delay

Sub U Delay 8 Sub Picture Cb Delay

Peaking 38 Peaking Control

APL Enable ON APL Enable

APL Luma Factor 208 APL Luma Factor

APL Gain 48 APL Gain

Filter 0 Band Pass Filter

Gamma Enable ON Gamma Enable

S6 Panel LVDS Type ON LCD Panel

50HzMode 0 Don't Care

60HzMode 0 Don't Care

Frame Conv OFF Don't Care

Long Life OFF Don't Care

Gamma Enable OFF Don't Care

ED OFF Don't Care

EXT PLE OFF Don't Care

DEMDA/CH

DEMDA Channel Setup

0 DEMDA Channel Update

S8 WB Bias R 33 R Bias

Bias G 30 G Bias

Bias B 35 B Bias

Gain R 31 R Gain

Gain G 31 G Gain

Gain B 34 B Gain

Sub Brt 31 Don't Care

Sub Cont 0 Don't Care

Contrast-R 1.035 Don't Care

Contrast-G 1.035 Don't Care

Contrast-B 1.047 Don't Care

PreScale

SC Pscale 21

FM Pscale 36

Stereo ID 10

Dimming(LCD) 255

Service Remote Controller

-12-

Key Content Default Value Description

SSC Enable OFF Spread Spectrum ON/OFF

SSC Delta 0 Don't Care

SSC posi 0 Don't Care

SSC nega 0 Don't Care

BBE Level 48 BBE Level

MVOICE Level 96 MVOICE Level

Sound Delay(ms) 40 Sound Delay

S10 MISC EDID Update OFF EDID Update

Model SL-230A DLA-32C7 Chassis

S/W Version SL-230A_L######V#D Decoder S/W Version

Micom Version SL-230D_M######V##M PIC Micom S/W Version

Micom Update OFF Micom Update Mode

OS_DbgPrintf OFF Debugging Mode

Digital Signal Status OFF Digital Signal Status

Digital Index Status OFF Don't Care

RF Software Update OFF RF S/W Update Mode

S1 HeatRun Enable OFF HeatRun Enable Mode

Panel Model S/S Don't Care

Digital Index level 133 Don't Care

LG Tuner Enable ON Don't Care

Index PCA9557 Enable

ON Smart Icon

S11 Pattern Test Pattern 0 Don't Care

S12 Reset Factory Reset 0 Factory Reset

Eeprom Reset 0 EEPROM Reset

▶ Hot Key Operation

[S1] key works Heat Run mode. Heat-run mode is enable only when 'S1 Heat Enable' is on in MISC. [S2] key works channel & EDID update mode. It is necessary only DTV Factory in Gumi. [S7] key works channel update mode in DEMDA. [S12] key works Factory Reset mode in directly.

※ [S10] -> [Menu] -> [S12 Reset] -> [Eeprom Reset] : EEPROM has default value.

▶ [S5] -> [PQ] -> [Brightness & Contrast] : This data can be changed only in each mode.

: For example, [Main DTV Cont] value can be

changed only in DTV mode.

5. Block Diagram

-13-

DLA-32/37/42LMBD BLOCK DIAGRAM

6. Hardware Troubleshooting : Digital Board

-14-

1) In spite of sound output, the screen is black.

1.1 In case of ATV, DTV, VIDEO and COMPONENT mode.

START

Check the SMPS

and input voltage

IC501 Problem.

Replace the Main PCB

IC501 Problem.

Replace the Main PCB

1) TV mode : Check the path from Pin 8 of TU101 to Pin Y4

of IC501

2) Component mode : Check the path from input jack to Pin

V6, W9, Y8(Comp 1) and W6, Y9, W8(Comp 2) of IC501

3) Video mode : Check the path from input jack to Pin

Y10(Video 1) and V8(Video 2) of IC201

Perhaps Connector and Cable

Problem.

Replace the Main PCB

Check

the input power of

IC501 is correct

Yes

Check

the LVDS connector and cable

is correct

Is the input signal of IC501 normal?

Check

the LVDS signal output of IC501 is correct

(Pin A14, B14, A15, B15, A16, B16, A17,

B17, A18, B18, A19, B19)

Yes

Hardware Troubleshooting : Digital Board

-15-

1.2 In case of PC and HDMI mode

START

Check the input resolution

of external device

IC501 Problem.

Replace the Main PCB

IC501 Problem.

Replace the Main PCB

1) PC mode : Check the path from Jack to Pin Y7, W10 and

2) HDMI mode : Check the path from input jack to Pin M2,

M1, N2, N1, P2, L2, L1, U11 and T1 of IC501

Perhaps Connector and Cable

Problem.

Replace the Main PCB

Check

PC/HDMI resolution to

available resolution in

LCD TV

Yes

Check

the LVDS connector and cable

is correct

Is the input signal of IC501 normal?

Check

the LVDS signal output of IC501 is correct

(Pin A14, B14, A15, B15, A16, B16, A17,

B17, A18, B18, A19, B19)

Yes

Check the SMPS and

input voltage

Check

the input power of

IC501 is correct

Yes

Hardware Troubleshooting : Digital Board

-16-

1.3 In case of DTV mode

START

Select Air/Cable in Ant. Set correctly

Check the SMPS and input voltage

IC501 Problem.

Replace the Main PCB

Check the path from

TU101 to IC101

Check

1. The SNR is over 15dB

2. “Get 1SecSer” is “0”

The signal quality is poor.

1. Check the ANT or its connection is correct

2. Consult a local installer.

Perhaps Connector and Cable

Problem.

Replace the Main PCB

Check

the “Ant. Set” is correct

in Menu

Yes

Check

the LVDS connector and cable

is correct

Check

the LVDS signal output of IC501 is correct

(Pin A14, B14, A15, B15, A16, B16, A17,

B17, A18, B18, A19, B19)

Yes

Check

the input power of

IC501 is correct

Is “Lock status” “1(LOCK)”

when “Digital signal status” is

“on” in Service mode S10?

Yes

Check the path from IC301 to IC501

Yes

Does

digital signal input from IC301

to IC501

Check the path from IC301 to IC501

Yes

Does

TS signal input from IC101

to IC301

Yes

Hardware Troubleshooting : Digital Board

-17-

2) In spite of picture display, the sound is not generated.

START

1. Confrim AC connection

2. Confrim Power S/W on

3. Check Video or other PCBs

Check the connection of jack

Does screen appear?

Yes

Is the Sound input Jack

correctly connected?

Check the connection of speaker

Yes

Is the speaker correctly

connected?

Check the SMPS and input voltage

Yes

Check

the input power of IC602 is normal

(Pin 4, 7, 12, 15)

Check the path from IC602 to Speaker

Check

the signal output of IC602 is normal

(Pin 8, 9, 16, 17)

Yes

Perhaps IC602 problem.

Replace main PCB

Check

the signal output of IC601 is normal

(Pin 31, 33)

Yes

Perhaps IC601 problem.

Replace main PCB

Digital TV mode : Check the path from Pin 7

of IC601 to Pin T2 of IC301

HDMI mode : Check the path from Pin 21

of IC601 to Pin V12 of IC501

Analog TV mode : Check the path from Pin 55

of IC601 to Pin 10 of TU101

Video, Component mode : Check the path from

each Pin of IC601 to each jack

Check

the input signal of IC601is

normal

Yes

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