Rolsen LC-23Ixx1, LC-26Ixx1, LC-27Ixx1, LC-30Ixx1, LC-32Ixx1 Schematics

SERVICE MANUAL

LC-23Ixx1/ LC-26Ixx1/ LC-27Ixx1/ LC-30Ixx1

LC-32Ixx1/ LC-37Ixx1/ LC-42Ixx1

23”/26”/27”/30"/32”/37”/42” TFT-LCD TV/MONITOR

2005. 05. 19.

1

CONTENTS

1. SAFETY PRECAUTION ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 3

2. BLOCK DIAGRAM ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 4

3. GENERAL SPECIFICATION ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥12

4. TROUBLE SHOOTING ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥15

5. CONTROLS OF FRONT PANEL ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 18

6. CONNECTIONS OF BACK PANEL ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 19

7. REMOTE CONTROL HANDSET ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 20

8. CONNECTING DIAGRAM ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 21

9. PCB LAYOUT ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 22

10.FACTORY MENU‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥30

1 1. SCHEMATIC DIAGRAM ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 35

12. EXPLODED VIEW‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 48

13. REPLACEMENT PARTS LIST ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 52

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1. Safety Instructions

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 replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

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/10watt resistor in parallel with a 0.15uF capacitor between a known good earth ground (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 into the AC outlet and repeat AC voltage measurements 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 and repaired before it is returned to the customer.

To Instrument’s

To Instrument’s exposed

exposed METALLIC PARTS

METALLIC PARTS

AC Volt-meter

0.15uF

1.5 Kohm/10W

Good Earth Ground

Good Earth Ground such as WATER PIPE,

such as WATER PIPE, CONDUIT etc.

CONDUIT etc.

3

2. BLOCK DIAGRAM

■ BLOCK DIAGRAM

`

4

■ IC FUNCTIONAL BLOCK DIAGRAM (MST5151A)

■ IC PIN ASSIGNMENT (MST5151A)

5

■ IC BLOCK DIAGRAM (MSP3410G)

■ IC PIN OUT (MSP3410G)

6

■ IC BLOCK DIAGRAM (MP7720)

■ IC PIN OUT (MP7720)

■ IC BLOCK DIAGRAM (TW9918)

7

■ IC PIN OUT (TW9918)

8

■ IC BLOCK DIAGRAM (VCT49xy I)

■ IC PIN OUT (VCT49xyI)

9

■ IC BLOCK DIAGRAM (CXA2069Q)

10

■ IC PIN OUT (CXA2069Q)

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3. General Specification

No Item Specification Remark

Min Typ Max Unit

1. Video Input 1) NTSC M

2) NTSC 4.43

3) PAL

4) SECAM

2. Component Input 480i/59.94/60Hz 576i/50Hz 480p/59.94/60Hz 576p/50Hz 720p/50/59.94/60Hz 1080i/50/59.94/60Hz

3. RGB DTV Input 480p/59.94/60Hz 576p/50Hz 720p/50/59.94/60Hz 1080i/50/59.94/60Hz

4. DVI DTV Input 480p/59.94/60Hz 576p/50Hz 720p/50/59.94/60Hz 1080i/50/59.94/60Hz

5. RGB PC Input VGA (640x480) SVGA (800x600) XGA (1024x768) SXGA (1280x1024) UXGA (1600x1200) MAC

6. DVI PC Input VGA (640x480) SVGA (800x600) XGA (1024x768) SXGA (1280x1024) UXGA (1600x1200) MAC

7. HDMI Input 480p/59.94/60Hz 576p/50Hz 720p/50/59.94/60Hz 1080i/50/59.94/60Hz

8. Input Voltage AC 100 ~ 240 V, 50hz / 60hz

9. External Interface

DVI/ DVI DTV/ HDMI Input RGB PC/RGB DTV Input PC Sound Input 1 Ear-phone Jack

Component/L/R 1 RCA 2P COMPONENT Input 1 RCA 3P Full SCART Half SCART SPDIF Output

RF Input 1 S-VIDEO Input 1 S-VIDEO JACK

1 DVI-I Connector

1 D-Sub 15 Pin

1 SCART JACK

1 OPTICAL JACK

3.579545 / 60 Hz

4.433618 / 60 Hz

4.433618 / 50 Hz

4.286 / 50 Hz Table 1. (Component)

Table 2. (RGB DTV)

Table 3. (DVI DTV)

Table 4. (RGB PC)

Table 5. (DVI PC)

Table 2. (RGB DTV) →HDMI Input (digital interface with HDCP)

(RGB PC,DVI)

(HDMI)

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■< Table 1. > Component Signal Resolution

No Resolution H-freq(KHz) V-freq.(Hz) Pixel

clock(MHz)

1. 720x480 15.73 59.94 13.500 SDTV,DD 480i(525i)

2. 720x480 15.75 60.00 13.514 SDTV,DD 480i(525i)

3. 720x576 15.625 50.00 13.500 SDTV,DD 576i(525i)

4. 720x480 31.47 59.94 27.000 SDTV 480p

5. 720x480 31.50 60.00 27.027 SDTV 480p

6. 720x576 31.25 50.00 27.000 SDTV 576p

7. 1280x720 44.96 59.94 74.176 HDTV 720p

8. 1280x720 45.00 60.00 74.250 HDTV 720p

9. 1280x720 37.50 50.00 74.25 HDTV 720p 50Hz

10. 1920x1080 33.72 59.94 74.176 HDTV 1080i

11. 1920x1080 33.75 60.00 74.250 HDTV 1080i

12. 1920x1080 28.125 50.00 74.250 HDTV 1080i 59Hz

Proposed

■

< Table 2. > RGB -DTV Signal Resolution

No Resolution H-freq(KHz) V-freq.(Hz) Pixel

clock(MHz)

1. 720x480 31.47 59.94 27.000 SDTV 480p

2. 720x480 31.50 60.00 27.027 SDTV 480p

3. 720x576 31.25 50.00 27.000 SDTV 576p

4. 1280x720 44.96 59.94 74.176 HDTV 720p

5. 1280x720 45.00 60.00 74.250 HDTV 720p

6. 1280x720 37.50 50.00 74.25 HDTV 720p 50Hz

7. 1920x1080 33.72 59.94 74.176 HDTV 1080i

8. 1920x1080 33.75 60.00 74.250 HDTV 1080i

9. 1920x1080 28.125 50.00 74.250 HDTV 1080i 59Hz

Proposed

■< Table 3. > DVI- DTV Resolution

No Resolution H-freq(KHz) V-freq.(Hz) Pixel

clock(MHz)

1. 720x480 31.47 59.94 27.000 SDTV 480p

2. 720x480 31.50 60.00 27.027 SDTV 480p

3. 720x576 31.25 50.00 27.000 SDTV 576p

4. 1280x720 44.96 59.94 74.176 HDTV 720p

5. 1280x720 45.00 60.00 74.250 HDTV 720p

6. 1280x720 37.50 50.00 74.25 HDTV 720p 50Hz

7. 1920x1080 33.72 59.94 74.176 HDTV 1080i

8. 1920x1080 33.75 60.00 74.250 HDTV 1080i

9. 1920x1080 28.125 50.00 74.250 HDTV 1080i 59Hz

Proposed

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■< Table 4. > RGB -PC Signal Resolution

No Resolution H-freq(KHz) V-freq.(Hz) Pixel

clock(MHz)

1. 640x350 31.469 70.08 25.17 DOS

2. 720x400 31.469 70.08 28.32 DOS

3. 720x400 37.927 85.03 35.50 DOS 4 640x480 31.469 59.94 25.17 VESA(VGA)

5. 640x480 37.861 72.80 31.50 VESA(VGA)

6. 640x480 37.500 75.00 31.50 VESA(VGA)

7. 640x480 43.269 85.00 36.00 VESA(VGA)

8. 800x600 35.156 56.25 36.00 VESA(SVGA)

9. 800x600 37.879 60.31 40.00 VESA(SVGA)

10. 800x600 48.077 72.18 50.00 VESA(SVGA)

11. 800x600 46.875 75.00 49.50 VESA(SVGA)

12. 800x600 53.674 85.06 56.25 VESA(SVGA)

13. 832x624 49.725 74.55 57.28 Macintosh

14. 1024x768 48.363 60.00 65.00 VESA(XGA)

15. 1024x768 56.476 70.06 75.00 VESA(XGA)

16. 1024x768 60.023 75.02 78.75 VESA(XGA)

17. 1024x768 68.677 85.00 95.62 VESA(XGA)

18. 1280x768 47.693 60.0 80.12 VESA(WXGA)

19. 1280x768 60.091 75.0 102.87 VESA(WXGA)

20. 1280x768 68.504 85.0 118.37 VESA(WXGA)

21. 1280x1024 64.000 60.00 108.000 VESA(SXGA)

22. 1280x1024 74.405 69.99 125.000 VESA(SXGA)

23. 1280x1024 80.000 75.00 135.000 VESA(SXGA)

24. 1280x1024 91.100 85.00 157.500 VESA(SXGA)

25. 1600x1200 75.000 60.00 162.000 VESA(UXGA)

Proposed

■< Table 5. > DVI -PC Signal Resolution

No Resolution H-freq(KHz) V-freq.(Hz) Pixel

clock(MHz)

1. 640x350 31.469 70.08 25.17 DOS

2. 720x400 31.469 70.08 28.32 DOS

3. 720x400 37.927 85.03 35.50 DOS 4 640x480 31.469 59.94 25.17 VESA(VGA)

5. 640x480 37.861 72.80 31.50 VESA(VGA)

6. 640x480 37.500 75.00 31.50 VESA(VGA)

7. 640x480 43.269 85.00 36.00 VESA(VGA)

8. 800x600 35.156 56.25 36.00 VESA(SVGA)

9. 800x600 37.879 60.31 40.00 VESA(SVGA)

10. 800x600 48.077 72.18 50.00 VESA(SVGA)

11. 800x600 46.875 75.00 49.50 VESA(SVGA)

12. 800x600 53.674 85.06 56.25 VESA(SVGA)

13. 832x624 49.725 74.55 57.28 Macintosh

14. 1024x768 48.363 60.00 65.00 VESA(XGA)

15. 1024x768 56.476 70.06 75.00 VESA(XGA)

16. 1024x768 60.023 75.02 78.75 VESA(XGA)

17. 1024x768 68.677 85.00 95.62 VESA(XGA)

18. 1280x768 47.693 60.0 80.12 VESA(WXGA)

19. 1280x768 60.091 75.0 102.87 VESA(WXGA)

20. 1280x768 68.504 85.0 118.37 VESA(WXGA)

21. 1280x1024 64.000 60.00 108.000 VESA(SXGA)

22. 1280x1024 74.405 69.99 125.000 VESA(SXGA)

23. 1280x1024 80.000 75.00 135.000 VESA(SXGA)

24. 1280x1024 91.100 85.00 157.500 VESA(SXGA)

25. 1600x1200 75.000 60.00 162.000 VESA(UXGA)

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Proposed

4. TROUBLESHOOTING

No Raster

YES

Check

P401 or P402 or

P403

Connector?

Y E S

Check

P800 ~ P805

Connector?

Y E S

Check

P100_M,P101_M

Connector?

Y E S

NO

N

O

N

O

Fasten

P401 or P402

or P403

Connector

Fasten

P800 ~ P805

Connector

Fasten

P100_M,P101_M

Connector

Check P806,P807 Connector?

Y E S

NO

Fasten

P806,P807

Connector

Contact A/S Team

15

No Picture

YES

Check

IC403,IC404

Pin2 : High?

YES

Check IC401

Pin3 : High?

YES

Check X400

YES

Check IC308

Pin3 : High?

N

O

Replace

IC403,IC404

N

O

Replace

IC401

N

O

Replace

X400

N

O

Replace

IC308

YES

Check

IC300,IC301

Pin2 : High?

YES

Check

IC500,IC501

Pin2 : High?

Y E S

O

N

O

N

Replace

IC300,IC301

Replace

IC500,IC501

Contact A/S Team

16

No Sound

Y E S

Check X900 ?

Y E S

Check IC902

Pin3 :5V?

Y E S

Check IC900

Pin 27,28?

Y ES

Check

IC700,IC701

Pin 7

N

O

N

NO

Replace

X900

O

Replace

IC902

O

Replace

IC900

Replace

IC700,IC701

Contact A/S Team

YES

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4. CONTROLS OF FRONT PANEL

1.MAIN POWER

switches the set on or off.

D / E (Programme Up/Down)

2.

selects a programme or a menu item. switches the set on from standby.

3.

F / G (Volume Down/Up)

adjusts the volume. adjusts menu settings.

4.MENU

selects a menu.

5. INPUT SELECT

selects switches the set On from standby.

6. POWER (I /

switches the set on from standby or off to standby.

7.POWER/STANDBY INDICATOR (

illuminates red in standby mode. illuminates green when the set is switched on.

TV, AV1, AV2, S-VIDEO, COMPONENT, PC-RGB, DVI mode.

)

8.REMOTE CONTROL SENSOR

18

5. CONNECTIONS OF BACK PANEL

1. DVI INPUT / RGB INPUT / AUDIO INPUT SOCKETS

Connect the set output socket of the PERSONAL COMPUTER to this socket.

2. AUDIO INPUT / COMPONENT INPUT (480i / 480p /720p / 1080i) SOCKETS

3. EURO SCART SOCKET

connect the euro scart socket of the VCR to these sockets.

4. Digital Audio (OPTICAL)

Connect digital audio from various types of equipment.

Note : In standby mode, these ports will not work.

5. AERIAL SOCKET

6. S-VIDEO INPUT

connect video out from an S-VIDEO VCR to the SVIDEO input.

7. POWER CORD SOCKET

This set operates on an AC power. The voltage is indicated on the Specifications page. Never attempt to operate the set on DC power.

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