Challenger LC2201SB, LC26SB, LC2601SB Schematic
SERVICE MANUAL
DVD COMBO TFT-LCD TV/MONITOR
CONTENTS
1. SAFETY PRECAUTION ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 2
2. BLOCK DIAGRAM ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 3
3. GENERAL SPECIFICATION ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 8
4. TROUBLE SHOOTING ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 11
5. CONTROLS OF FRONT PANEL ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 14
6. CONNECTIONS OF BACK PANEL ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 15
7. REMOTE CONTROL HANDSET ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 16
8. PCB LAYOUT ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 18
9. SCHEMATIC DIAGRAM ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 20
10. EXPLODED VIEW‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 27
11. REPLACEMENT PARTS LIST ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ 33
1
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
AC Volt-meter
0.15uF
0.15uF
1.5 Kohm/10W
1.5 Kohm/10W
Good Earth Ground
Good Earth Ground
such as WATER PIPE,
such as WATER PIPE,
CONDUIT etc.
CONDUIT etc.
2
2. BLOCK DIAGRAM
■ BLOCK DIAGRAM
3
■ IC FUNCTIONAL BLOCK DIAGRAM (MST97889AL)
19”~42” Panels (SXGA/WXGA)
19”~42” Panels (SXGA/WXGA)
19”~42” Panels (SXGA/WXGA)
19”~42” Panels (SXGA/WXGA)
LVDS/TTL
LVDS/TTL
Scaler
Scaler
3D DI
3D DI
MstarACE-3
MstarACE-3
OSD
OSD
ADC
ADC
MUX
MUX
D-Sub/YPbPr/RGB
D-Sub/YPbPr/RGB
Video
Video
Decoder
Decoder
YCX2/CVBSX4
YCX2/CVBSX4
HDMI/
HDMI/
DVI Rx
DVI Rx
HDMI/DVI L/Rx4 , Mono , SIF
HDMI/DVI L/Rx4 , Mono , SIF
Audio
Audio
Processor
Processor
Audio ADC
Audio ADC
CC/V-Chip
CC/V-Chip
Teletext
Teletext
MIU
MIU
SSC
SSC
Audio DAC
Audio DAC
CCIR656/601
CCIR656/601
8-bit or 10-bit CCIR656
8-bit or 10-bit CCIR656
16bit
16bit
MCU
MCU
/8-bit CCIR601
/8-bit CCIR601
GPIO/PWM
GPIO/PWM
TTX Flash
TTX Flash
(optional)
(optional)
SPI
SPI
Speaker &
Speaker &
Line Out
Line Out
SPDIF/
SPDIF/
I2S I/O
I2S I/O
DDR/
DDR/
SDR
SDR
XTAL
XTAL
Flash
Flash
4
■ IC PIN ASSIGNMENT (MST97889AL)
5
■ IC FUNCTIONAL BLOCK DIAGRAM(PI5V512)
■ IC PIN OUT(PI5V512)
6
■ IC Audio Amp Typical Application(MP7722)
■ IC PIN OUT (MP7722)
7
3. General Specification
No Item Specification Remark
Min Typ Max Unit
1. Video Input 1) NTSC M 3.579545 / 60 Hz
2. Component Input 480i/60Hz
576i/50Hz
480p/60Hz
576p/50Hz
720p/50/60Hz
1080i/50/60Hz
1080p/50/60Hz
3. RGB DTV Input 480p/60Hz
576p/50Hz
720p/50/60Hz
1080i/50/60Hz
1080p/50/60Hz
4. DVI DTV Input 480p/59.94/60Hz
576p/50Hz
720p/50/60Hz
1080i/50/60Hz
1080p/50/60Hz
5. RGB PC Input VGA (640x480)
SVGA (800x600)
XGA (1024x768)
SXGA (1280x1024)
MAC
6. DVI PC Input VGA (640x480)
SVGA (800x600)
XGA (1024x768)
SXGA (1280x1024)
MAC
7. HDMI Input 480p/60Hz
576p/50Hz
720p/50/60Hz
1080i/50/60Hz
1080p/50/60Hz
8. Input Voltage AC 100 ~ 240 V, 50hz / 60hz
9. External Interface
HDMI/ DVI/ DVI DTV Input 1 HDMI Connector
RGB PC/RGB DTV Input 1 D-Sub 15 Pin
PC Sound Input (RGB PC,DVI) 1 Ear-phone Jack
Component/L/R 1 RCA 2P(26” only)
Component Input 1 RCA 3P
RCA-CVBS 1(26”: 2) RCA 3P JACK
SPDIF Output 1 OPTICAL JACK(26”)
RF Input 1 F type
S-video Input 1 S-VIDEO JACK
Audio Out 1 RCA 2P(26” only)
Ear-Phone Out 1 Ear-phone Jack
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)
8
■ < Table 1. > Component Signal Resolution
No Resolution H-freq(KHz) V-freq.(Hz) Pixel lock(MHz) Proposed
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
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
13. 1920x1080 33.75 60.00 74.250 HDTV 1080p
14. 1920x1080 28.125 50.00 74.250 HDTV 1080p
■
< Table 2. > RGB -DTV Signal Resolution
No Resolution H-freq(KHz) V-freq.(Hz) Pixel lock(MHz) Proposed
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
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
10. 1920x1080 33.75 60.00 74.250 HDTV 1080p
11. 1920x1080 28.125 50.00 74.250 HDTV 1080p
■ < Table 3. > DVI- DTV(HDMI) Resolution
No Resolution H-freq(KHz) V-freq.(Hz) Pixel lock(MHz) Proposed
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
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
10. 1920x1080 33.75 60.00 74.250 HDTV 1080p
11. 1920x1080 28.125 50.00 74.250 HDTV 1080p
9
■ < Table 4. > RGB -PC Signal Resolution
No Resolution H-freq(KHz) V-freq.(Hz) Pixel clock(MHz) Proposed
1. 640x350 31.469 70.08 25.17 DOS
2. 720x400 31.469 70.08 28.32 DOS
3. 640x480 31.469 59.94 25.17 VESA(VGA)
4. 640x480 37.861 72.80 31.50 VESA(VGA)
5. 640x480 37.500 75.00 31.50 VESA(VGA)
6. 800x600 35.156 56.25 36.00 VESA(SVGA)
7. 800x600 37.879 60.31 40.00 VESA(SVGA)
8. 800x600 48.077 72.18 50.00 VESA(SVGA)
9. 800x600 46.875 75.00 49.50 VESA(SVGA)
10. 832x624 49.725 74.55 57.28 Macintosh
11. 1024x768 48.363 60.00 65.00 VESA(XGA)
12. 1024x768 56.476 70.06 75.00 VESA(XGA)
13. 1024x768 60.023 75.02 78.75 VESA(XGA)
14. 1280x768 47.693 60.0 80.12 VESA(WXGA)
15. 1280x768 60.091 75.0 102.87 VESA(WXGA)
16. 1366x768 49.020 60.0 87.354 VESA(WXGA)
17. 1366x768 61.270 74.994 111.144 VESA(WXGA)
18. 1440x900 55.469 59.902 88.750 VESA(WXGA+)
19. 1280x1024 64.000 60.00 108.000 VESA(SXGA)
20. 1280x1024 74.405 69.99 125.000 VESA(SXGA)
21. 1280x1024 80.000 75.00 135.000 VESA(SXGA)
22. 1680x1050 64.674 59.883 119.001 VESA(WSXGA)
■
< Table 5. > DVI -PC Signal Resolution
No Resolution H-freq(KHz) V-freq.(Hz) Pixel lock(MHz) Proposed
1. 640x350 31.469 70.08 25.17 DOS
2. 720x400 31.469 70.08 28.32 DOS
3. 640x480 31.469 59.94 25.17 VESA(VGA)
4. 640x480 37.861 72.80 31.50 VESA(VGA)
5. 640x480 37.500 75.00 31.50 VESA(VGA)
6. 800x600 35.156 56.25 36.00 VESA(SVGA)
7. 800x600 37.879 60.31 40.00 VESA(SVGA)
8. 800x600 48.077 72.18 50.00 VESA(SVGA)
9. 800x600 46.875 75.00 49.50 VESA(SVGA)
10. 832x624 49.725 74.55 57.28 Macintosh
11. 1024x768 48.363 60.00 65.00 VESA(XGA)
12. 1024x768 56.476 70.06 75.00 VESA(XGA)
13. 1024x768 60.023 75.02 78.75 VESA(XGA)
14. 1280x768 47.693 60.0 80.12 VESA(WXGA)
15. 1280x768 60.091 75.0 102.87 VESA(WXGA)
16. 1366x768 49.020 60.0 87.354 VESA(WXGA)
17. 1366x768 61.270 74.994 111.144 VESA(WXGA)
18. 1440x900 55.469 59.902 88.750
19. 1280x1024 64.000 60.00 108.000 VESA(SXGA)
20. 1280x1024 74.405 69.99 125.000 VESA(SXGA)
21. 1280x1024 80.000 75.00 135.000 VESA(SXGA)
22. 1680x1050 64.674 59.883 119.001
10
4. Troubleshooting
No Raster
Y
E
S
ST1.8V,ST3.3V,ST5V,
5V,12V,24V,33V
PWR-ON/OFF
INV 0N/OFF
(HIGH: ON)
5V, 12V Line
Connector
Check
Connector
Check
Connector
Check
NO
Y
E
S
NO
Y
E
S
NO
Y
E
S
Raster
P300,P301,P308
Raster
P300,P301,P308
Raster
P300,P301,P308
ST1.8V,ST3.3V,ST5V
RESET CHECK
IC200
PIN: 253
Contact A/S Team
NO
Y
E
S
Raster
P300,P301,P308
11
Loading...