Roadstar TVL-151M-201M User manual

Service Manual -TVL-151M-201M
R
TVL-151M-201M
Service Manual -TVL-151M-201M

SERVICE MANUAL
TVL-151M / 201M
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SERVICE MANUAL
TVL-151M
TVL-201M

SERVICE MANUAL
TVL-151M / 201M
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- Contents -
1. Detail Specification
1-1. PANEL
1-2. IN/OUT JACK
1-3. User Interface Specification
1-4. Electrical Specification
1-5. Available PC Input Mode & Video Timing Standard
1-6. OSD Specification ( America )
1-7. OSD Specification ( *** )
1-8. Factory mode OSD Specification
2. Adjustment Specification
2-1. Adjustment of CLOCK DELAY
2-2. Adjustment of AUTO COLOR GAIN
2-3. Setting Instruction of OPTION
2-4. Adjustment Instruction of VPC3230
3. Inspection Specification
3-1. Inspection of LCD PANEL
3-2. Inspection of INVERTOR
3-3. Inspection of ASSY-CONTROL
3-4. Inspection of ASSY-MAIN
4. Block Diagram
5. Circuit Diagram
6. General Specification
7. Troubleshooting
8. Parts List

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1. Detail Specification
1-1. LCD Panel
¢ˆ LG-Philips LCD Panel : LC151X01-A3 : 15.1"( Panel Link Type )
LC201V1-A3 : 20.1"
1-2. In/Out Jack
¢ˆ
Power Supply Input : Din Jack
¢ˆ
Antenna Input : 75ohm Unbalanced Din-Jack Type
¢ˆ
PC Input : 15pin D-sub Jack ( Female Type )
¢ˆ
PC Audio Input : Phone Jack ( Stereo Type )
¢ˆ
Composite Video In : RCA Jack
¢ˆ
DVD In : RCA Jack (Y, Cb, Cr) - * 20.1" Model Only
¢ˆ
S-Video In
¢ˆ Audio Input : RCA Jack ( When Composite or S-Video input )
¢ˆ EURO SCART Jack
¢ˆ
Head-Phone Output Jack : Phone Jack ( When the Jack insert, Main Sound is mute. )
¢ˆ
Audio Out : RCA Jack ( Monitor Out )
¢ˆ
Video Out : RCA Jack ( Monitor Out )

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1-3. User Interface
¢ˆ 7 Panel Key
¢Power , Menu , Select , Vol Up , Vol Down , CH Up , CH Down
¢ˆ 3 Color LED
¢Red : Stand by Condition
¢Green : Power On Condition
¢Scarlet : SLEEP TIME On Condition
¢Green Blink : When the PC Mode, Inserted D-sub Jack but
H,V Sync is not input or PC Power Save Mode
¢ˆ Remocon Receiver
¢Remocon ( Pal ; 41Key, NTSC ; 29Key )
¢ˆ On Screen Display
¢Control using OSD
¢OSD Language : English, German, Italian etc.
¢ˆ Plug & Play : DDC - 1/2B
¢ˆ Factory Mode
¢Mode for controlling the adjustment item & Panel Option in mass production

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1-4. Electrical Specification
¢ˆ TV Color Standard : PAL,SECAM ( NTSC System : NTSC )
¢ˆ TV Sound Standard : B/G,I,D/K ( NTSC System : M )
¢ˆ TV Stereo Sound : NICAM Stereo , A2 Stereo ( NTSC System : BTSC )
¢ˆ TV Receiving Range : VHF LOW( 2 ~ H ), VHF-HIGH( I ~ W+26 ),
UHF (W+27~78)
Total 100CH ( NTSC System : 181CH )
¢ˆ Sound Output : RMS 1.5W X 2CH
¢ˆ Power Supply : AC / DC Adaptor ( DC12V , 5A , 50 /60 HZ )
¢Input Power : AC 100V ~ 265V
¢Power Consumption : Stand-by : 3W , Power On : 45W
¢ˆ Video Input Level : 1 Vp_p , 75 ohm
¢ˆ Audio Input Level : 500mVrms
¢ˆ PC Input Level : Analog RGB Input ( H,V Separator )
¢See 1-5. Available PC Input Mode & Video Timing Standard.
¢ˆ Audio Output Level : 500mVrms
¢ˆ Head-Phone Output Level : 100mW

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1-5. Available PC Input Mode & Video Timing Standard
Resolution Horizontal Vertical Clock Time
H V ( KHz ) Pol. ( Hz ) Pol. ( MHz ) ( nsec ) Remarks
IBM 640 350 31.469 P 70.087 N 25.175 39.722
IBM 640 480 31.469 N 59.940 N 25.175 39.722
VESA 640 480 37.861 N 72.809 N 31.500 31.746
VESA 640 480 37.500 N 75.000 N 31.500 31.746
VESA 640 480 43.269 N 85.008 N 36.000 27.778
IBM 720 400 31.465 N 70.087 P 28.322 35.308
VGA
VESA 800 600 31.156 N/P 56.250 N/P 36.000 27.778
VESA 800 600 37.879 P 60.317 P 40.000 25.000
VESA 800 600 48.077 P 72.188 P 50.000 20.000
VESA 800 600 48.875 P 75.000 P 49.500 20.202
VESA 800 600 53.674 P 85.061 P 56.250 17.778
SVGA
VESA 1024 768 48.363 N 60.004 N 65.000 15.358
VESA 1024 768 56.476 N 70.069 N 75.000 13.333
VESA 1024 768 60.023 P 75.029 P 78.750 12.698
VESA 1024 768 68.677 P 84.997 P 94.500 10.582
XGA

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1-6. OSD Specification
¢ˆ PICTURE
¡CONTRAST
¡BRIGHTNESS
¡COLOR TEMPERAT ( PC input mode only )
¡STANDARD , 6500K , USER, RESET , 9300K
¡SHARPNESS ( Not Available PC MODE )
¡COLOR ( Not Available PC MODE )
¡TINT ( NTSC System Only )
¢ˆ SOUND
¡BASS
¡TREBLE
¡BALANCE
¡MTS ( S.MODE )
¢ˆ GEOMETRY ( PC input mode only )
¡H-POSITION
¡V-POSITION
¡AUTO POSITION

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¢ˆ
FUNCTION
¡TRACKING ( PC input mode only )
¡AUTO TRACKING
¡CLOCK
¡PHASE
¡INFORMATION
¡TUNING ( TV input mode only )
¡SORT
¡AUTO TUNING
¡MANUAL TUNING
¡FINE TUNING
¡CH SKIP
¡LANGUAGE ( PAL/SECAM System )
¡CAPTION ( NTSC System )
¡V-CHIP ( NTSC System )

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1-8. Factory Mode OSD Specification
¢ˆ How to use Factory Mode
¡Press Power & Select Key in Panel Control key, and go to Factory mode.
¢ˆ Factory ADJ
¡CLOCK DELAY
¡AUTO COLOR GAIN
¡OPTION
¡TTX LOCAL
¡TTX E/W
¢ˆ MX88L281 1
¢ˆ AD9884 1 ( PC input mode only )
¢ˆ AD9884 2 ( PC input mode only )
¡SUB C VCP
¡SUB C CHG CURRENT
¡INIT VCO CURRENT
¢ˆ VPC3230 ( excluding PC MODE )
¡CONTRAST
¡BRIGHTNESS
¡PEAKING
¡CIP CONTRAST
¡CIP BRIGHT
** In mass production, adjust only Factory ADJ item, do not adjust other Modes.
( In the time of variation of A/S & initial condition of screen quality , built in other Modes for controlling )

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2. Adjustment Instruction ( Factory ADJ )
2-1. Adjustment instruction of CLOCK DELAY
1. Adjustment item : Adjust the dispersion happening in the time of matching ASSY-MAIN and LCD PANEL .
(As the contact status of the CONNCETOR for connecting LCD PANEL, dispersion happens )
2. Adjustment Process : After assembling the SET , do the adjustment.
3. Preliminary adjustment :
1) Connect the outlet VIDEO PATTERN GENERATOR ( ANALOG RGB & SEPARATE H,V OUT ) to INPUT
( 15PIN D-sub with VGA CABLE )
2) TEST PATTERN: 1DOT BLACK, Select WHITE PATTERN.
( In the case of the tool of MSPG-925L, select PATTERN NO.28 )
3) Select Output FORMAT into 1024 x 768 @85HZ. (Select MODEL : 21)
4) Turn on the SET, and them select in PC MODE.
4. Adjustment Instruction :
1) Press SEL & Power Key in Front panel at the same time , go to Factory mode
2) Select CLOCK DELAY ( including in FACTORY ADJ MENU ) with CH UP/DOWN KEY in Factory mode
3) Changing the level of CLOCK DELAY with VOL UP/DOWN KEY, adjust to the noiseless level in screen
( variable range : 0 ~ 15, DEFAULT : 15 )

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2-2. Adjustment Instruction of AUTO COLOR GAIN
1. Adjustment Item : Function of automatically setting ADC LEVEL of AD9884 with ANALOG RGB ( D-sub ) signal .
( WHITE BALANCE & CONTRAST adjustment )
2. Adjustment Process : After assembling the SET , do the adjustment .
3. Preliminary Adjustment
: 1) Connect Outlet of VIDEO PATTERN GENERATOR to the input terminal of CVBS.
2) TEST PATTERN : Select COLOR BAR PATTERN
3) Turn on the SET, and then select in VIDEO MODE.
4. Adjustment Instruction
: 1) Press SEL & Power Key in Front Panel at the same time, and go to Factory mode.
2) In Factory mode, select Auto Color Gain in Factory ADJ.
3) Press VOL UP KEY , and then displaying the phrase " Processing " , AUTO Adjustment start
4) When adjustment is completed , the phrase " Processing " disappears
=> caution : In the course of Processing, do not remove the signal.

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2-3. Setting Instruction for OPTION
1. OPTION : - X2 - BYPASS
=> Using 6 BIT PANEL
=> Back-Light Control of Inverter
( Bright Max : LOW , Min : HIGH )
2. OPTION : - X2 - INVERT
=> Using 6 BIT PANEL
=> Back-Light Control of Inverter voltage polarity
( Bright Max : HIGH , Min : LOW )
3. OPTION : - X3 - BYPASS
=> Using 8 BIT PANEL
=> Back-Light Control of Inverter voltage polarity
( Bright Max : LOW , Min : HIGH )
4. OPTION : - X3 - INVERT
=> Using 8 BIT PANEL
=> Back-Light Control of Inverter voltage polarity
( Bright Max : HIGH , Min : LOW )
¡Select no 4 in the case that no 4 is not selected .

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2-4. Adjustment Instruction of VPC3230
1. Adjustment item : Function of adjusting DEFAULT VALUE of VPC3230 DEVICE.
2. Adjustment process : After assembling the SET, do the adjustment .
3. Preliminary adjustment
: 1) Connect Outlet of VIDEO PATTERN GENERATOR to the input terminal of CVBS.
2) TEST PATTERN : Select COLOR BAR PATTERN
3) Turn on the SET, and then select in VIDEO MODE.
4. Adjustment Instruction
: 1) Press SEL & Power Key in Front Panel at the same time , and go to Factory mode.
2) Select VPC3230 in Factory mode.
3) Adjust to the following levels with VOLUME UP/DOWN, CH UP/DOWN
- CONTRAST 52
-BRIGHT 9
- PEAKING 0
- CIP CONTRAST 7
-CIPBRIGHT 7
¡
No need to adjust when the SET is stable .

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3. Inspection Specification
3-1. Input Specification of LCD PANEL ( Total Inspection )
Inspection Procedure Standard Remark
1 Turn off the power of JIG ( check the power of JIG )
2 Connect BACK LIGHT CONNECTOR of LCD PANEL to JIG
3 Connect PANEL Connector of JIG to LCD PANEL
4 Turn on the power of JIG ¡POWER ON
5 After receiving Black Pattern, check the number of radiant Pixel No the matter
6 After receiving White Pattern, check the number of radiantless Pixel 2 Pixel and less
7 After receiving White Pattern, check the spots No the matter
8 Turn off the power of JIG
9 Disconnect PANEL Connector
10 Disconnect Back Light Connector
RMK
1) In order to prevent the spots of PANEL, inspect with Gloves on
2) In the time of connecting & disconnecting the Connector, surely turn off the power of JIG,
and then go on the inspection.
3) Test Pattern : Full White & Full Black Pattern

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3-2. Inspection Specification of INVERTOR ( Total inspection )
Insepction procedure Standard Ӿ
1 Turn off the power of JIG ( check the power of JIG )
2 Connect 2P CONNECTOR in the upper part of JIG to CN3 Back-Light Con'
3 Connect 2P CONNECTOR in the lower part of JIG to CN2 Back-Light Con'
4 Connect 5P CONNECTOR of JIG to CN1 Inverter Con'
5 Turn on the power of JIG ¡POWER ON
6 Check the screen is displaying normally
7 Change “ Brightness” and check the variation of brightness level
8 Turn off the power of JIG
9 Disconnect the Connector
RMK
1) TEST PATTERN : White / Black Pattern
2) In the time of connection & disconnection the CONNECTOR,
surely turn off the power of JIG , and then go on inspection
=> warning : pay attention to high voltage

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3-3. Inspection specification of ASSY-CONTROL
Inspection procedure standard Remark
1 Turn off the power of JIG ( check the power of JIG )
2 Connect 7P Connector with JIG
3 Check the tight insertion of TACT SW Tight insertion
4 Turn on the power of JIG.
5 Check the color of LED is red STAND BY : RED LED
6Press POWER KEY , and then check the screen is displaying & LED is lighting in green . POWER ON : GREEN LED
7 Press each KEY and check the function CHECK key SW
8 With REMOTECON , turn off the power Check REF LED
9 Turn off the power of the JIG
10 Disconnect the Connector
RMK
1) After checking the connecting status of 15PIN in JIG , go on the inspection
: in case of no sign , KEY may not work .

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Operating procedure OSD specification
1. POWER KEY setting
2. MENU KEY setting
3. SELECT KEY setting
4.
¢‚
KEY setting
5.
¢”
KEY setting
6.
¡
KEY setting
7.
¡ª
KEY settinh
=> POWER ON
SOUND
TREBLE
BASS
BALANCE
S.MODE
PICTURE
CONTRAST
BRIGHTNESS
SHARPNESS
COLOR
PICTURE
CONTRAST
BRIGHTNESS
SHARPNESS
COLOR
SOUND
TREBLE
BASS
BALANCE
S.MODE
FUNCTION
TRACKING
INFORMATION
TUNING
LANGUAGE
SOUND
TREBLE
BASS
BALANCE
S.MODE
FUNCTION
TRACKING
INFORMATION
TUNING
LANGUAGE
TUNING
SORT
AUTO TUNING
MANUAL TUNING
FINE TUNING
CH SKIP
FUNCTION
TRACKING
INFORMATION
TUNING
LANGUAGE

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3-4. INSPECTION SPECIFICATION OF ASSY-MAIN
3-4-1 INSPECTION IN TV MODE
1. Required tool : PM5518 ( RF PATTERN GENERATOR – built in SAP function) , simple JIG
2. Preliminary inspection : 1) set up PM5518 : RF FREQ' : 55.25MHZ ,
PATTERN : COLOR BAR ,SOUND : STEREO ( 3KHZ/1KHZ),
SYSTEM : PAL/NTSC - 6 (REAR PANEL) RF GAIN :60dBuV
3. Inspection procedure :
1) Inserting Connector
2) Power on the JIG , POWER ON the Set.
3) TUNING ( in case of NTSC, select channel 2, in case of PAL/SECAM , AUTO TUNING
: select the stored channel .
4) Check COLOR & the sound of SPEAKER ( L : 3KHZ , R : 1KHZ )
5) Changing VOLUME , check up & down of sound ( VOLUME 0 : MUTE , others : LEVEL up & down )
6) With MUTE KEY of REMOCON , Check MUTE function
7) With MTS KEY of REMOCON, after converting to MONO, check SOUND
8) When converting " CONTRAST" in PICTURE MENU , check the conversion of light & darkness in screen
9) When converting " BRIGHTNESS" of PICTURE MENU , check the conversion of brightness in screen
10) When converting " COLOR" of PICTURE MENU, check COLOR GAINING ( 0 : NO COLOR )
11) In the time of change " TINT" in PICTURE MENU , check COLOR VARIATION.
12) With P.STD KEY of REMOCON , check the conversion of the Screen
13) With S.STD KEY of REMOCON , check the conversion of the Sound
14) With SURROUND KEY of REMOCON, check the conversion of the Sound
15) Convert to STAND BY MODE.
16) Power off the JIG , and then disconnect JACK & CONNECTOR.

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3-4-2. Inspection item in VIDEO MODE
1. Required tool; : PM5518 ( PATTERN GENERATOR ) , VTR ( NTSC ) , SCOPE , £JIG1 ,
2. Preliminary item : 1) set up PM5518 : RF FREQ' :55.25MHZ , PATTERN : COLOR BAR ,
SOUND : STEREO ( 3KHZ/1KHZ )
SYSTEM : PAL/NTSC - 6 ( REAR PANEL ) RF GAIN : 60dBuV
3. Insepction procedure :
1) Inserting Connector
2) Power on JIG , and then POWER ON the set. ( Check the color of LED : GREEN )
3) Inserting RCA-JACK BLOCK S-VHS JACK & PC AUDIO JACK.
4) After converting to VIDEO MODE , check the screen & Sound .
5) In the screen of SCOPE check that the output is L : 3KHZ , R : 1KHZ
6) With S.MODE KEY of Remote control , after converting to MONO , check the SOUND
( L /R :3KHZ )
7) After converting to S-VIDEO MODE , check the screen & SOUND
8) After converting PC MODE, check the output of PC AUDIO
9) After inserting SCART CABLE
10) After converting to STAND BY MODE, check the color of LED ( LED color : RED )
11) Power off JIG , and then disconnect JACK & CONNECTOR