LC CHASSIS |
TFTLCD TV SERVICE MANUAL |
CONTENTS |
PAGES |
Safety instructions |
1 |
Technical specifications |
2 |
Power rating and Panel Specifications |
3 |
Remote control explanations |
4 |
Service Menu of the TV |
5 |
Set appearrances |
9 |
Block diagram of the VCTI |
10 |
Block diagram of Microcontroller (Genesis) |
11 |
Block diagram of power supply |
12 |
Data sheet of important IC’s |
14 |
Service mode items and explanations |
12 |
Replacement part List |
23 |
Frequency list of channels |
28 |
SAFETY PRECAUTIONS
GENERAL GUIDELINES
1.Always use the manufacturer’s replacement safety components. The critical safety components marked with 
on the schematics diagrams should not be by other substitutes. Other substitute may create the electrical shock , fire or other hazards. Take attention to replace the spacers with the originals. Furthermore where a short circuit has occurred , replace those components that indicate evidence of overheating.
2.After servicing , see that all the protective devices such as insulation barriers, insulation papers, shields and isolation R-C combinations are correctly installed.
3.When the receiver is not being used for a long time of period of time , unplug the power cord of the Adaptor from the AC outlet.
Color TFT LCD Module is very sensitive both electrically and physically.Users, therefore, are requested to follow the “Guidance of handling color TFT LCD Module”on the followings.
1 - Be careful not to make scratch on the polarizer.
Surface of polarizer is soft and can be physically damaged easily.
Please do not touch, push or rub polarizer surface with materials over HB hardness.
2 - Keep clean the surface.
Please wear rubber glove when touch the surface of LCD screen. Please use soft and anti-static material as cleaner.
3 - Keep out of water.
Water on/in the LCD may cause electrical short or corrosion. Please wipe out dry or water carefully.
4 - Prevent swift Temperature & Humidity change.
Instantaneous temperature and/or humidity change can make dew or ice which cause nonconformance such as malfunction.
5 High temperature & high humidity reduce the life-time.
LCD is not proper to be used at high temperature and high humidity. Please keep specified temperature and humidity condition.
6 - Keep out of Corrosive Gas.
Corrosive gas effect the polarizer and the circuit chemically and cause defects accordingly.
7 - Electrostatic discharge can make Damage
There are electro-static sensitive components such as CMOS in LCD Module. Please earth human body when handle the LCD.In addition, please do not touch the interface connector pin with bare.
8 - Do not operate for a long time under the same pattern
Operating LCD for a long time under the same pattern can cause image persistence and can damage it. Please follow following guidance.
1.Turn the power off when do not use.
2.Change the pattern periodically.
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SPECIFICATIONS |
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Receiving System |
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PAL B/G+I+D/K SECAM L/L' |
Tuning System |
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PLL FST |
Comb Filter |
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Adaptive 4H\2H |
LTI, CTI Filters |
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Optional |
Sync On Green (SOG) support on graphics |
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YES |
Scaling |
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Upto SXGA at 75Hz |
Stereo Decoding (German A2, Nicam, BTSC) |
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German A2, Nicam |
Virtual Dolby |
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Optional |
Subwoofer |
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Optional |
YPbPr In (Progressive) |
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Through D-sub 15 conn. |
Optional |
Number of speakers |
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2 (L+R) |
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Level (1.5, 2.5, Teleweb) |
Teletext 1.5 |
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No TextOptional |
Teletext |
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Type |
Fast Text -Optional |
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Top Text&Fast-Default |
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List Mode |
Optional |
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Page Memory |
10p |
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ENGLISH, DEUTSCH, DUTCH, FRANCAIS, |
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ESPAÑOL, ITALIANO, PORTUGUESA, |
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EHΛΛNIKA, SVENSKA, NORSK, SUOMI, |
Supported Menu Languages |
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TÜRKÇE, POLSKI, MAGYAR, ČEŠTINA, |
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ROMANESTE, SLOVENČINA, DANSK, |
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SERBIAN, PЧCCKИЙ, Bulgarian, Crotian |
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>> 22 Languages |
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4:3 |
YES |
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16:9 |
4:3 Panels: Depends on LCD |
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16:9 Panels: YES |
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14:9 |
4:3 Panels: NO |
Picture Formats |
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16: 9 Panels: Depends on LCD |
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Panorama |
NO |
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(4:3, 16:9, 14:9, Panorama, LetterBox, Subtitle) |
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Letterbox |
4:3 Panels: NO |
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16: 9 Panels: Depends on LCD |
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Subtitle |
4:3 Panels: NO |
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16: 9 Panels: Depends on LCD |
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Zoom |
NO |
WSS (Wide Screen Signalling) |
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Optional |
ATS (Automatic Tuning System) |
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Frequency Search |
Manual Search |
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Frequency Search |
AFT (Auto Fine Tuning) |
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YES |
Number of Program Storage |
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100 |
No Ident Timer |
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YES |
Equalizer |
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YES |
AVL (Automatic Volume Level) |
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YES |
Sound Status Memory |
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YES |
Picture Status Memory |
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YES |
Zapping\Swap |
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Optional |
Panel Lock |
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YES |
Picture Format Switching Through Scart (Pin 8) |
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YES |
Auto RGB Detect Through Scart (Pin 16) |
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YES |
Timer |
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On\Off or Sleep |
Optional |
Picture Smart Modes |
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YES |
Sound Smart Modes |
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YES |
Simple Hotel Mode |
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Optional |
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Stby to On in PC mode |
Optional |
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when last watched is PC |
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Wake Up in PC |
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Stby to On automatically |
Optional |
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when PC signal is available |
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Memory Card Reader |
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Optional |
POWER RATING AND PANEL SPECIFICATION
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15" |
17" |
20" |
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22W" |
26" |
27" |
32" |
Adaptor Input |
12V |
12V |
15V |
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24V |
Built-in Power |
Built-in Power |
Built-in Power |
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Current rating |
3A |
4A |
4A |
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3A |
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Power consumptions |
48W |
60W |
75W |
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100W |
130W |
130W |
130W |
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St-By Power |
<3W |
<3W |
<3W |
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<3W |
<3W |
<3W |
<3W |
Consumption |
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Input Range |
100-240V/50, 60Hz |
100-240V/50, 60Hz |
100-240V/50, 60Hz |
100-240V/50, 60H |
100-240V/50, 60Hz |
100-240V/50, 60 |
100-240V/50, 60Hz |
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Audio Output Power |
2X2W |
2X3W |
2X3W |
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2X7W |
2X7W |
2X7W |
(%10) THD |
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Samsung |
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Samsung |
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Manufacturer |
CMO |
Samsung |
CMO |
AUO |
Samsung |
LG-Philips |
Chimei |
Chimei |
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AUO |
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AUO |
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Interface |
Double TTL\Single |
Dual LVDS |
Single TTL\Single |
Single LVDS |
Singlel LVDS |
Singel LVDS |
Singel LVDS |
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LVDS |
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LVDS |
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Resolution |
XGA (1024x768) |
SXGA |
SVGA (800x600) |
WXGA |
WXGA (1280x768) |
WXGA |
WXGA (1280x720) |
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(1280x1024) |
VGA (640x480) |
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(1280x720) |
(1280x720) |
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Brightness (cd/m2)> |
250 |
300 |
500 |
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450 |
450 |
550 |
550 |
Contrast> |
300 |
400 |
500 |
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500 |
400 |
600 |
600 |
REMOTE CONTROL
1 2
3
4
5
6 7
8
9 10
11 12
13 14 15 16
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
AV |
0 |
SWAP |
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PC |
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TV |
TXT/MIX |
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MENU |
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OK |
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VOL+ |
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PR+ |
VOL- |
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PR- |
‹ ?
X
17
18
19 20
21 22
23 24
25
26 27 28 29 30 31
1.Picture Format (
)
2.Temporary mute of volume (MUTE) (
)
3.Numeric buttons
4.Audio/Video (AV) (
)
5.PC mode transition (
)
6.Teletext / MIX / TV choice buttons ( 
)
7.Up (Menu -Teletext) (
)
8.Left (Menu) (
)
9.Volume UP (
)
10.Volume DOWN (
)
11.Red Fastext Button
12.Green Fastext Button
13.Index Button (P100) (
)
14.Question/Answer button (REVEAL) (
)
15.UPDATE Button (
)
16.SUB PAGE Button (
)
17.STAND-BY Button (
)
18.Return to Selected Program Button (SWAP) (
)
19.TV mode transition button (
)
20.Menu Button (
)
21.OK Button (
)
22.Right (Menu) (
)
23.Down (Menu/Teletext) (
)
24.Program up button (P+) (
)
25.Program down button (P-) (
)
26.Blue Fastext Button
27.Yellow Fastext Button
28.STOP Button (
)
29.Teletext enlarge button (DOUBLE) (
)
30.Equalizer selection button (
)
31.Picture control button (
)
SERVICE MENU OF THE TV
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DEFAULT VALUES OR |
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ITEM NAME |
OPTIONS/ |
VALUES |
SETUP |
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OPTIONS |
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SCART 2 |
ON/OFF |
OFF |
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FAV |
ON/OFF |
ON |
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SVHS |
ON/OFF |
ON |
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HOTEL MODE |
ON/OFF |
OFF |
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STBY RECALL |
ON/OFF |
OFF |
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RECALL LAST AV |
ON/OFF |
OFF |
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MSP CARRIER MUTE |
ON/OFF |
OFF |
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WSS RF |
ON/OFF |
ON |
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AUTO AV 16:9 |
ON/OFF |
ON |
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FIRST ATS |
ON/OFF |
OFF |
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BACKLIGHT POL |
ON/OFF |
OFF |
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FACTORY MODE |
ON/OFF |
OFF |
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ADJUSTMENTS |
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WHITE R |
0-255 |
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128 |
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WHITE G |
0-255 |
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128 |
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WHITE B |
0-255 |
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128 |
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BRIGHTNESS |
0-255 |
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130 |
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CONTRAST |
0-257 |
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158 |
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COLOR |
0-255 |
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128 |
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PRESCALE FM |
0-127 |
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37 |
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PRESCALE NICAM |
0-127 |
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63 |
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PRESCALE SCART |
0-127 |
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27 |
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HOTEL VOLUME |
0-63 |
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16 |
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AGC |
0-31 |
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23 |
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FACTORY RESET |
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SW DOWNLOAD |
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SELECTIONS |
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TUNER TYPE |
PHILIPS , SAMSUNG |
PHILIPS |
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TELETEXT |
FAST&TOP , NO TEXT ,FAST |
FAST&TOP |
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TIMER MODE |
SLEEP TIMER OFF TIMER |
SLEEP TIMER |
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MSP CLIP |
REDUCE VOL |
REDUCE |
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VOLUME |
REDUCE VOL |
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SWAP/ZAPP |
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ZAPP |
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DOLBY VIRTUEL |
ON/OFF |
OFF |
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LC (L5C) SERVICE MENU
Service Menu is entered by pressing 9, 3, 0, 1 keys on the remote controller when the Picture icon is highlighted in the Main Menu.
Service Menu has 3 sub-menus. These are:
•Options
•Adjustments
•Selections.
Navigation through these menus can be done by pressing OK button. Every adjustment made in this menu is saved automatically.
OPTIONS
Options are adjustments that the user can select On or Off.
•SCART 2
•FAV
•SVHS
•HOTEL MODE
•STAND BY
•MSP CARRIER MUTE
•WSS SCART
•FIRST ATS
SCART 2 / FAV / SVHS
If a source is disabled in the Service Menu, it will be skipped during source switches. If SCART2 is enabled, SW assumes that the FAV source share the same path as the SVHS source on the HW. If it is disabled, it is assumed that FAV and SVHS share separate paths. TUNER and SCART1 are enabled by default.
HOTEL MODE
Enabling Hotel Mode has two effects. First, SETUP menu is no longer accessible by the user. Second, maximum adjustable volume value is limited to HOTEL VOLUME value. This value can be adjusted in the ADJUSTMENTS sub-menu of the Service Menu.
STAND BY
If this Option is OFF, the TV will stay in Stand By mode after a Power On. If this Option is ON, the TV will recall its last stand by status before the Power Off, and switch on from Stand By automatically, if the last state was ‘Stand by On’.
MSP CARRIER MUTE
If this option is ON, sound processor’s carrier mute functionality will be enabled. The MSP will mute the sound automatically if the signal quality is bad. Setting this option Off will disable this functionality.
ATS
If this option is set to ON, TV will display Country Selection menu in the next start. After some country is selected, the user will be prompted for the start of AutoProgramming process.
ADJUSTMENTS
This sub-menu contains numeric adjustments. These items are:
•WHITE R
•WHITE G
•WHITE B
•BRIGHTNESS
•CONTRAST
•COLOR
•PRESCALE FM
•PRESCALE NICAM
•PRESCALE SCART
•HOTEL VOLUME
WHITE R / WHITE G / WHITE B
These are used for color bias adjustment. Unlike other items in the service menu, changes will take effect immediately.
PRESCALE FM / PRESCALE NICAM / PRESCALE SCART
These are prescale values that will be used for the initialization of the sound processor (MSP), at the next switch on.
HOTEL VOLUME
This value is used as the volume limit, when the Hotel Mode is on.
SELECTIONS
This sub-menu contains selections.
• |
TUNER TYPE |
SAMSUNG / PHILIPS |
• |
TELETEXT |
NO TEXT / FAST / FAST&TOP |
• |
MSP CLIP |
REDUCE VOL / REDUCE TONE |
TUNER TYPE
One of two supported tuner can be selected from this item. System must be restarted for this change to take effect.
TELETEXT
NO TEXT: Teletext is totally disabled. TXT/MIX button will not be functional. AUTO picture format mode will be disabled in RF, F-AV and SHVS modes. Naming and sorting functionality during Autoprogramming will be disabled.
FAST: TOPtext functionality will be disabled. FAST&TOP: TOPtext functionality is enabled.
TIMER MODE
If OFF TIMER is selected, the user will be able to enter time of the day info for the TV to switch off. If SLEEP TIMER is selected, the user can specify some time period, after which the TV will go to stand by automatically.
MSP CLIP
This selection identifies which method will be used by the sound processor to prevent clipping effects on volume.
AUTOPROGRAMMING
When the user selects the Autoprogram item in Setup menu, Country Selection menu is opened. The user must select a country before the Autoprogramming starts. Broadcast system will be selected according to the country selected.
Broadcast systems according to countries:
BELGIUM |
BG + L |
CROATIA |
BG |
CZECH REP. |
DK |
DENMARK |
BG |
FINLAND |
BG |
FRANCE |
L + BG |
GERMANY |
BG |
GREECE |
BG |
HUNGARY |
DK |
IRELAND |
I |
ITALY |
BG |
NETHERLANDS |
BG |
NORWAY |
BG |
POLAND |
DK |
PORTUGAL |
BG |
SPAIN |
BG |
SWEDEN |
BG |
SWITZERLAND |
BG + L |
TURKEY |
BG |
UNITED KINGDOM |
I |
For countries France, Belgium and Switzerland, autoprogramming is done twice. For Belgium and Switzerland, first BG channels will be searched, after the search in BG is done, searching will restart for L standard. If the selected country is France, the sequence of standards is reversed, thus, first L then BG.
TELETEXT LANGUAGES
L5C SW decides which teletext language group will be used for teletext decoding, according to the country selected for autoprogramming.Teletext languages according to countries:
EAST EUROPE:CROATIA ,CZECH_REP, POLAND
WEST EUROPE: BELGIUM ,DENMARK, FINLAND, UK, FRANCE, GERMANY,
IRELAND ,ITALY ,NETHERLANDS, NORWAY, PORTUGAL,SPAIN, SWEDEN, SWITZERLAND, HUNGARY
TURKISH-GREEK:GREECE TURKEY
PC MODE
PC mode can be entered by pressing PC button on the remote controller. User can return back to TV mode by pressing the PC or TV buttons.
After the switching to PC mode, VGA input will be displayed on screen, as soon as the mode (input resolution and frequency) is determined.
If there is no input from the VGA input, NO SIGNAL dialog will be displayed for 15 seconds. At the end of this period if there is no signal from VGA input, the TV will go to Sleep State. While in the sleep state, the TV will keep monitoring the VGA input. If VGA signal is detected, the TV will wake from Sleep State, to PC mode. Alternatively, the user may select to switch the TV on from Sleep State, just like switching on from Stand-by. In this case, the set will switch on from TV mode.
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