Schaub Lorenz LTW32-42DV Schematic

LTW32/42DV-SERVICE

MANUAL

SERVICE

1. PRECAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Important Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Leakage Current Hot Check . . . . . . . . . . . . . . . . . . . . . . . 3

2. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3. Location & Function of Control . . . . . . . . . . . . . . . . . . . . . . . . 5

4. Remote Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5. Technical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1) IC2 : VCT 49xyl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2) IC7 : MST6151 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3) IC17 : M62320FP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4) IC06 : PCM1725 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5) IC22 : PI3V512 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6) ICX1 : CXA2069Q . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

7) ICX3 : LA42152 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

8) TU2 : TAEW-G053D . . . . . . . . . . . . . . . . . . . . . . . . . 24

6. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

No Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

No Sound/ Picture OK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

No Picture/ Sound OK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7. BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8. PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

9. PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

10. CRICUIT DIAGRAM

MANUAL

SERVICE

AC VOLTMETER

Good earth ground such as a water pipe, conduit etc.

To instrument`s exposed METALLIC PARTS

Important Safety Notice

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be relpaced with same components as Recommended in this manual to prevent Shock, or File, or other Harzards. Do not modify the original design without permission of menufacturer.

Leakage Current Hot Check (See Below Figure)

Plug the Ac cord directly into the Ac outlet. Do not use a line Isolation Transformer during this check. Connect 1.5k/10 watt resistor in parallel with a 0.15uF capacitor between a known good earth groung (Water pipe, Conduit, etc) and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity. Reverse plug of the AC cord info the AC outlet and repeat AC voltage mresurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS, which is, corresponds to 0.5mA. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked repaired before it is returned to the customer.

MANUAL

SERVICE

Panel Type Display Area

Display Color Pixel Pitch

Recommended Resolution

Video

Audio

Euro A/V Antenna Color System Sound System Stereo Type Text

Certifications Power Consumption Speaker Plug & Play Screen Control Weight

Power Supply Remote Controller Dimension

Panel

In/Out

TV Signal

Others

TFT Color LCD

697.685 x 392.256mm(32") / 819 x 460mm(37") / 930 x 523mm(42")

16.7 million

0.17 x 0.51mm(32") / 0.200 x 0.600mm(37") /

0.227 x 0.681mm x RGB mm(42")

1366 x 768

Analog RGB 15 pin D-sub PC Audio Input, HDMI

Composite Input S-Video In DVD (Y, Pb, Pr) Input, HDMI Input

Composite Input PC Input Component (Y,Pb,Pr)

Scart 75 ohm Coaxial cable PAL/SECAM B/G, D/K, I, L/L' NICAM, A2 TELETEXT

140W(32") / 170W(37") / 210W(42") 10W x 10W DDC 2 B On Screen Display Menu

32C": 21.5 Kg(net) 25.5 Kg(gross)

32D": 21Kg(net) 24.5Kg(gross)

37C": 31 Kg(net) 36.5 Kg(gross)

42C": 35 Kg(net) 41 Kg(gross)

42D": 34Kg(net) 40Kg(gross) AC 100-250V~ Yes

32C": 1017 (W) x 585 (H) x 243 (D)

32D": 807.6 (W) x 643 (H) x 243 (D)

37C": 1144 (W) x 646 (H) x 288 (D)

42C": 1260 (W) x 737 (H) x 288 (D)

42D": 1063 (W) x 830 (H) x 290 (D)

SPECIFICATION

MANUAL

SERVICE

WARNING : TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS TELEVISION

TO RAIN OR MOISTURE

Front

1. SVC JACK

2. HDMI Use to connect a video signal from a PC or DVD.

3. PC AUDIO Connects to the sound-output port of a personal computer

4. PC D-SUB Use to connect a video signal from a personal computer

5. HDTV INPUT Video signals from a HDTV player

6. ANTENNA JACK Connect to an antenna or a cable TV system

7. S-VIDEO S-Video signal from an S-VHS VCR or laserdisc player

8. A/V IN Audio signals from VCR or similar device.(Audio input of A/V IN is used com-

monly with SVHS)

9. SCART SCART1: SCART RGB, AV IN, RF OUT

SCART2: SCART AV IN, Monitor OUT

10. AC INLET

Use 100-250V AC, 50/60 Hz.

To prevent electrical shocks and fire hazards, do not use any other power source.

11. MAIN POWER SWITCH

Rear

32"

37"/42"

MANUAL

SERVICE

DVI connector does not support HDCP function, this product is not compatible with the goods with HDCP function only DVI-D supported.

PROG DN

PROG UP

1. SOURCE button

2. PIP Sub source Button

3. Numeric Buttons (Direct Channel select.)

4. P.STD Button

5. SLEEP Button

/ Button (This buttons are used to make adjustments to the selected menu item)

7. MULTI Button It is converted with Digital Source

8. MENU Button

9. VOLUME Up(+) / Down(-) Button

10. DISPLAY Button

11. Still Button

(This button will stop/freeze the picture)

12. A/D Button (Add/Del Button)

13. POWER button (Turns the TV On and Off)

14. PC button (Select PC signal)

15. S.STD Button

16. M/S button (Sound Selection)

17.

/ Button (This buttons are used to make adjustments to the selected menu item)

18. MUTE Button (Press to temporarily cut of the sound)

19. ENTER Button

20. PROGRAM Up(

) / Down( ) Button

21. Q-VIEW Button (Quick view for previous

channel)

22. Size Button (Image size button)

23. Auto Button (PC Auto Adjust button)

24. Time Button

25. Teletext Buttons

26. Sub TV Program Up/Down Button

MANUAL

SERVICE

Point to remote control sensor of the TV set. The maximum operable distance is approximately 20 feet from the remote control sensor, and not more than 30 to either side of center. The operation of the remote control is most effective when there is nothing between it and the remote control sensor. The duration of the batteries is approximately 6 months to 1 year. Replace the batteries when the remote operation becomes unstable.

BA TTERY INSTALLATION

The battery compartment is located beneath the sliding cover. Press the indentation and lift up the cover while sliding it down. Correctly install the batteries, observing

polarities as shown in the compartment. Do not use a combination of old and new batteries or batteries of different types. If batteries become exhausted, remove and replace them soon. When battery leakage occurs, clean the battery compartment with a soft cloth and replace the batteries.

POWERSOURCE

SOURCE POSITION

PIP

123

456

7809

P.STD S.STD

SLEEP

MULTI

DISPLAYVOLUME

STILL

A/D AUTO SIZE