Samsung T200HD, T220HD Schematic

LCD-Monitor
Chassis : LS22TDD / LS20TDD
Model :
T220HD / T200HD
SERVICE
Manual
TFT-LCD Monitor Contens
Refer to the service manual in the GSPN (see the rear cover) for the more information.
1. Precautions
2. Product specifications
3. Disassembly and Reassembl
e
4. Troubleshootin
g
5. Exploded View & Part Lis
t
6. Wiring Diagra
m
7. Schematic Diagra
m
Contents
1. Precautions .............................................................................................................. 1-1
1-1. Safety Precautions ......................................................................................................... 1-1
1-2. Servicing Precautions ..................................................................................................... 1-2
1-3. Static Electricity Precautions .......................................................................................... 1-2
1-4. Installation Precautions .................................................................................................. 1-3
2. Product specifications ............................................................................................ 2-1
2-1. Feature & Specifications ................................................................................................. 2-1
2-2. Spec Comparison to the Old Models .............................................................................. 2-3
2-3. Accessories .................................................................................................................... 2-4
3. Disassembly and Assembly ................................................................................... 3-1
3-1. Disassembly ................................................................................................................... 3-1
4. Troubleshooting ...................................................................................................... 4-1
4-1. First Checklist for Troubleshooting ................................................................................ 4-1
4-2. No Power ........................................................................................................................ 4-2
4-3. No Video (Analog PC) ................................................................................................... 4-4
4-4. No Video (Digital-HDMI) ................................................................................................. 4-7
4-5. No Picture (Tuner_CVBS) ............................................................................................ 4-10
4-6. No Picture (Tuner_DTV) ............................................................................................... 4-13
4-7. No Sound ...................................................................................................................... 4-16
4-8. Faults and Corrective Actions ....................................................................................... 4-19
4-9. Adjustment .................................................................................................................... 4-20
4-11. Service Adjustment .....................................................................................................4-21
5. Exploded View & Part List ...................................................................................... 5-1
5-1. Exploded View -20” ......................................................................................................... 5-1
5-2. Parts List ......................................................................................................................... 5-3
5-3. Exploded View -22” ....................................................................................................... 5-30
5-4. Parts List ....................................................................................................................... 5-32
6. Wiring Diagram ........................................................................................................ 6-1
6-1. Wiring Diagram - Main Board ......................................................................................... 6-1
6-2. Wiring Diagram - IP Board .............................................................................................. 6-2
6-3. Connector Functions ...................................................................................................... 6-3
6-4. Cables ............................................................................................................................ 6-3
7. Schematic Diagram ................................................................................................. 7-1
7-1. Circuit Descriptions ......................................................................................................... 7-1
7-2. Block description ............................................................................................................ 7-2
7-3. Schematic Diagrams ...................................................................................................... 7-3
7-3-1. Schematic Diagrams (POWER) .................................................................................. 7-3
7-3-2. Schematic Diagrams (SOUND) .................................................................................. 7-4
7-3-3. Schematic Diagrams -SIGNAL INPUT ( HDMI1,HDMI2,DSUB,AUDIO) ..................... 7-5
7-3-4. Schematic Diagrams - SIGNAL INPUT ( SCART,Component) .................................... 7-6
7-3-5. Schematic Diagrams - Scaler/LVDS Output ................................................................ 7-7
7-3-6. Schematic Diagrams - Tuner ....................................................................................... 7-8
7-3-7. Schematic Diagrams - DTV Audio ............................................................................... 7-9
7-3-8. Schematic Diagrams - DTV IC Block ........................................................................ 7-10
7-3-9. Schematic Diagrams - PCMCIA ................................................................................ 7-11
7-3-10. Schematic Diagrams - TV PCMCIA .........................................................................7-12
7-3-11. Schematic Diagrams - SIGNAL INPUT ( DVI) ......................................................... 7-13
GSPN (Global Service Partner Network)
Area Web Site
North America
http://service.samsungportal.com
Latin America
http://latin.samsungportal.com
CIS http://cis.samsungportal.com
Europe http://europe.samsungportal.com
China http://china.samsungportal.com
Asia http://asia.samsungportal.com
Mideast & Africa
http://mea.samsungportal.com
This Service Manual is a property of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable International and/or domestic law.
© 2008 Samsung Electronics Co.,Ltd. All rights reserved.
Printed in Korea P/N: BN82-00361A-00
1-1
1. Precautions
1. Precautions
1-1. Safety Precautions
Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock.
1-1-1. Warnings
For continued safety, do not attempt to modify the circuit board.
Disconnect the AC power and DC power jack before servicing.
1-1-2. Servicing the LCD Monitor
When servicing the LCD Monitor, Disconnect the AC line cord from the AC outlet.
It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of this meter periodically.
1-1-3. Fire and Shock Hazard
Before returning the monitor to the user, perform the following safety checks:
Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the monitor.
Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistorcapacitor networks, mechanical insulators, etc.
Leakage Current Hot Check (Figure 1-1): WARNING : Do not use an isolation transformer during this test. Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7).
With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch
first in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, conduit,
etc.) and all exposed metal parts, including: metal cabinets, screwheads and control shafts. The current measured should not exceed 0.5 milliamp. Reverse the power-plug prongs in the AC outlet and repeat the test.
1-1-4. Product Safety Notices
Some electrical and mechanical parts have special safetyrelated characteristics which are often not evident from visual inspection. The protection they give may not be obtained by replacing them with components rated for higher voltage,
wattage, etc. Parts that have special safety characteristics are identified by
on schematics and parts lists. A substitute
replacement that does not have the same safety characteristics as the recommended replacement part might create
shock, fire and/or other hazards. Product safety is under review continuously and new instructions are issued whenever
appropriate.
1.
2.
1.
2.
1.
2.
3.
4.
DEVICE UNDER TEST
(READING SHOULD) NOT BE ABOVE 0.5mA
LEAKAGE CURRENT TESTER
TEST ALL
EXPOSED METAL
SURFACES
2-WIRE CORD
*ALSO TEST WITH
PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED)
EARTH
GROUND
Figure 1-1. Leakage Current Test Circuit
1-2
1. Precautions
1-2. Servicing Precautions
WARNING: An electrolytic capacitor installed with the wrong polarity might explode. Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of
this manual.
Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the
safety precautions, always follow the safety precautions.
1-2-1 General Servicing Precautions
Always unplug the unit’s AC power cord from the AC power source and disconnect the DC Power Jack before attempting to: (a) remove or reinstall any component or assembly, (b) disconnect PCB plugs or connectors, (c) connect a test component in parallel with an electrolytic capacitor.
Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes used. The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such elements to their original position.
After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that the area around the serviced part has not been damaged.
Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels, input terminals and earphone jacks).
Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. Connect an insulation resistance meter (500 V) to theblades of the AC plug. The insulation resistance between each blade of the AC plug and accessible conductive parts (see above) should be greater than 1 megohm.
Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument’s ground lead last.
1-3. Static Electricity Precautions
Some semiconductor (solid state) devices can be easily damaged by static electricity. Such components are commonly
called Electrostatically Sensitive Devices (ESD). Examples of typical ESD are integrated circuits and some field-effect
transistors. The following techniques will reduce the incidence of component damage caused by static electricity.
Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device. To avoid a shock hazard, be sure to remove the wrist strap before applying power to the monitor.
After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent accumulation of an electrostatic charge.
Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESDs.
Use only a grounded-tip soldering iron to solder or desolder ESDs.
Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ESDs.
Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive materials.
Immediately before removing the protective material from the leads of a replacement ESD, touch the protective material to the chassis or circuit assembly into which the device will be installed. Caution: Be sure no power is applied to the chassis or circuit and observe all other safety precautions.
Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together,
or lifting your foot from a carpeted floor can generate enough static electricity to damage an ESD.
1.
2.
3.
4.
5.
6.
1.
2.
3.
4.
5.
6.
7.
8.
1-3
1. Precautions
1-4. Installation Precautions
For safety reasons, more than two people are required for carrying the product.
Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock.
Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal
temperature may cause fire.
Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed
to moisture. Otherwise, it may cause a fire or electric shock.
Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check
the antenna cable or the external connectors if they are fully unplugged. Damage to the cord may cause fire or electric
shock.
Keep the antenna far away from any high-voltage cables and install it firmly. Contact with the highvoltage cable or the antenna falling over may cause fire or electric shock.
When installing the product, leave enough space (10cm) between the product and the wall for ventilation purposes.
A rise in temperature within the product may cause fire.
1.
2.
3.
4.
5.
6.
7.
1-4
1. Precautions
Memo
2-1
2. Product specifications
2. Product specifications
2-1. Feature & Specifications
Model T220HD / T200HD
Feature
Supreme Digital Interface & Networking
- With a built-in HD digital tuner, it supports HD broadcasting with no particular set-top box and provides simple access with a single remote control.
Excellent Picture Quality
- DNIe technology provides life-like clear images.
Dynamic Contrast
- Automatically detects the input visual signal and adjusts to create optimum contrast.
SRS TruSurround XT
- SRS TruSurround XT provides a virtual Dolby surround system.
Convenience
-The TV utilizes the HDMI system to implement perfect digital sound and picture quality.
Specifications
Item
Description
T220HD T200HD
LCD Panel TFT-LCD Panel, RGB Vertical strip,
normaly White, 22-Inch viewable,
0.282(H) X 0.282(V)mm Pixel Pitch
TFT-LCD Panel, RGB Vertical strip, normaly White, 20.1-Inch viewable,
0.258(H) X 0.258(V)mm Pixel Pitch
Scanning Frequency Horizontal : 30KHz ~ 81KHz(Automatic)
Vertical: 56Hz ~ 75Hz(Automatic)
Horizontal :30KHz ~ 81KHz(Automatic)
Vertical:56Hz ~ 75Hz(Automatic)
Display Colors 16.7 Million colors 16.7Million colors
Maximum resolution
Horizontal: 1680pixels
Vertical: 1050pixels
Horizontal : 1680pixels
Vertical:1050pixels
Input Signal Analog 0.7Vp-p±10% positive at
75Ω,internally terminated
Analog 0.7Vp-p±10% positive at 75Ω,internally terminated
Input Sync Signal Type: separate H/V,composite
Level : TTL Level
Type: separate H/V,composite
Level : TTL Level
Maximum Pixel Clock rate 146.250MHz 146.250MHz
Active Display (Horizontal/Vertical)
473.76(H) X 296.1(V) 433.44(H) X 270.9(V)
AC power voltage & Frequency
AC 110 ~ 240V, 50 ~ 60 Hz AC110 ~ 240V, 50 ~ 60Hz
Power Consumption
8⾘88⾘8
Dimensions Set (W x D x H)
520x215x441.5mm (After installation stand)
520x86.5x373.5mm (Without stand)
486x215x417.5mm (After installation stand)
486x86x350mm (Without stand)
Weight Set
(After installation Stand)
5.8kg 5.6kg
TV System Tuning Frequency Synthesize
System PAL, SECEM
Sound MONO, STEREO, NICAM
2-2
2. Product specifications
Specifications
Item
Description
T220HD T200HD
Environmental Considerations Operating Temperature: 50˚C ~ 104˚F(10˚C ~ 40˚C)
Operating Humidity : 10% ~ 80%
Storage Temperature: -4˚C ~ 113˚C(-20˚C ~ 45˚C)
Storage Humidity: 5% ~ 95%
Antenna Input 75Ω
Sound Characteristic -MAX Internal speaker Out : Right : 3W / Left : 3W
-BASS Control Range : -8 dB ~ + 8dB
-TREBLE Control Range : -8 dB ~ +8 dB
-Headphone Out : 10 mW MAX
-Output Frequency : RF : 80 Hz ~ 15 kHz A/V : 80 Hz ~ 20 kHz
2-3
2. Product specifications
2-2. Spec Comparison to the Old Models
Model T220HD / T200HD Curie (225MD)
Design
Screen Size 20” / 22” 22”
Frequency Horizontal Vertical Display Color
30 ~ 81 kHz
56 ~ 75 Hz
16,777,216 colors
30 ~ 81 kHz
56 ~ 75 Hz
16,777,216 colors
PC Resolution Maximum mode
WXGA, 1680 x 1050 @ 60 Hz 1680 x 1050
Input Signal Sync Signal Video Signal
H/V Separate, TTL, P. or N.
0.7 Vp-p @ 75ohm
H/V Separate, TTL, P. or N.
0.7 Vp-p @ 75ohm
Power Consumption Normal Power Saving
22” 58W < 2W 20” 50W < 2W
58W < 2W
*Color Effect
- Grey scale: Images are displayed in a grey tone on the screen.
- Green: Images are displayed in a green tone on the screen.
- Aqua: Images are displayed in a blue tone on the screen.
- Sepia: Images are displayed in a brown tone on the screen. Image Size : : If the resolution is not wide resolution, this option allows the screen size to be selected as normal or wide.
2-4
2. Product specifications
2-3. Accessories
Product Description Ccde. No Remark
Remote Control
&
Batteries (AAA x 2)
BN59-00624A
Samsung Electronics
Service center
Power Cord 3903-000085
Stand Body BN96-07347B
Stand Base BN96-07345A
D-Sub Cable BN39-00244G
CBF SIGNAL-DVI(D) BN39-00246K
User’s Guide,
Monitor Driver,
Natural Color Pro Software
BN96-07540A
Cleaning Cloth BN63-01798A
ZTX
3. Disassembly and Assembly
3. Disassembly and Assembly
This section describes the disassembly and reassembly sequences for this monitor.
Warning: As this monitor has parts that are sensitive to static electricity, be careful when handling them.
3-1. Disassembly
Caution: 1. Turn the monitor off before beginning the disassembly process.
2. When disassembling the monitor, do not use any metal tools except for the provided jig.
3. Remove the signal cable and the power cord before beginning the disassembly.
Description Photo Screws
1. Place monitor face down on cushioned table. Remove Stand, then remove 2 marked screws from the rear cover.
Caution : If you do not tilt the stand and use too
much force to remove it, the connection pin may break.
2. Remove the cover and the LCD panel using the provided jig on both grooves at the bottom.
ZTYG
3. Disassembly and Assembly
Description Photo Screws
3. Insert a flat screwdriver into the groove and then
lift up and remove the cover.
4. After remove COVER-REAR, then disconnect SPEAKER , FUNCTION wire.
5. Disconnect LVDS cable from panel.
ZTZ
3. Disassembly and Assembly
Description Photo Screws
6. After disconnecting SHIELD-LAMP of left side, disassemble lamp wire between panel and IP Board.
7. Remove 8 marked SCREW of left picture. Disconnect IP board.
Reassembly procedures are in the reverse order
of disassembly procedures.
8. Remove the LCD panel.
ZT[G
3. Disassembly and Assembly
Description Photo Screws
9. Remove the IR module by tilting the left snap to the right.
10. Remove the LED module by sliding the snap
designated in the right figure backwards.
11. Remove the two (2) screws and then remove the holders from the four (4) snaps designated in the
right figure using the provided jig.
ZT\
3. Disassembly and Assembly
Description Photo Screws
12. Remove the two (2) connectors.
Caution : Servicing is not supported for the PCB.
ⶺ"TTFNCMZ
13. The assembly is in the reverse order of the disassembly.
14. Connect the disassembled snap and the LED module again.
15. Fix the connecting wire with filament tape
Caution : If the wire is damaged when closing the
cover, an operating error may occur. Therefore, make sure to close the
cover after fixing it with filament tape.
filament tape
Ⲽ5IFBTTFNCMZJTJOUIFSFWFSTFPSEFSPGEJTBTTFNCMZ
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3. Disassembly and Assembly
Memo
4-1
4. Troubleshooting
4. Troubleshooting
4-1. First Checklist for Troubleshooting
Check the various cable connections first.
- Check to see if there is a burnt or damaged cable.
- Check to see if there is a disconnected cable connection or a connection is too loose.
- Check to see if the cables are connected according to the connection diagram.
Check the power input to the Main Board.
Check the following circuits.
• No raster appears: Function PBA, Main PBA, I/P PBA
• 55V develop but no screen: Main PBA
• 5V does not develop: I/P PBA
Check the voltage in and out between the IP Main Board, between the IP Panel, and between the Main LVDS
Boards.
1.
2.
3.
4.
4-2
4. Troubleshooting
4-2. No Power
Symptom Though the power swtich on, the LED power off and the screen is blank.T
Major
checkpoints
Check Power cable.
Check whether the Lamp connector is connected correctly to the IP.
Check whether the power cable is connected correctly to the MAIN.
Check whether the Function cable is connected correctly to the MAIN.
T
T
T
T
Diagnostics
Main Board Front
CN1001
C1109
Yes
No
LAMP off, power indicator
LED red color?
Check a connection a
power cable.
Yes
No
Does proper DC 13V appear
at DC5V.
Change a Assy PCB Power.
Yes
No
Does proper DC13V appear
at C1004?
Change a Assy PCB Power.
Yes
No
Does proper DC3.3V, 1.2v appear
at C1109?
Check IC1013, IC1005.
Change a main PBA.
No
A power is supplied to set?
Check a other function.(No picture
part) Replace a lcd panel.
Caution Make sure to disconnect the power before working on the IP board.
4-3
4. Troubleshooting
4-2-1. Circuit diagrams when the power does not turn on
5:GND
4:GND
3:GND
9:ON/OFF
8:A-DIMMING
7:5.1V/3.0A
6:5.1V/3.0A
2:13V/0.65A
1:PWM
L:INVERTER ON H:INVERTER OFF
1
1
2
1
R1004
2 1
C1004
2 1
C1005
MGND2 MGND1
9
8
7
6
5
4
3
2
1
CN1001
21
R1301
3
2
1
Q1005
1
2
1
R1001_DE
21
C1002
1
1 1
2 1
R1032
1 2 1
R1031
1
2 1
C1003
1
21
C1001_22
2 1
R1002
1/10W
0OHM
PWM_DIMMING_OUT
0OHM
100NF
4.7KOHM
FGND
A13V
B5V
25V
100NF
FGND
A5V
B5V
0OHM
4.7KOHM
4.7KOHM
SW_INVERTER
CN_SMD_S_009
FGND
FGND
1UF
50V
25V
100UF
KTC3875S-Y
6.3V
100UF
E
B
C
5A (MAX)
HIGH:ON LOW:OFF
8 7 6 54
3
2
1
IC1023
TP1001
R1030
Q1006
R1043
C1107
R1040
C1120
BD1022
2 1
C1110
TP1002
3
2
1
IC1013
2 1
C1109
C1112
21
BD1034
6.3V
100UF
BEAD_CHIP
B3.3V_DTV
B3.3VD
100NF
25V
FGND
AP1084K33A
FGND FGNDFGND
B5V
BEAD_CHIP
100NF
25V
FGND
1/10W
10KOHM
FGND
2SC2412K-Q
SI4435BDY-T1-E3
POWER_ON
1/10W
10KOHM
1/10W
100KOHM
A5V
1UF 10V
6.3V
100UF
E
B
C
GND
OUTIN
4-4
4. Troubleshooting
4-3. No Video (Analog PC)
Symptom Though the LED power turns on, the screen is blank when connecting the VGA cable.T
Major
checkpoints
Even though the LED power turns on, the screen is blank when connecting the VGA cable.
Check the D-sub cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
T
T
T
T
Diagnostics
Main Board Front
RA5008 RA5009 RA5010 RA5011 RA5012
IC5002
R3020 R3021 R3022
Yes
No
Check a PC source and check
the connection of DSUB cable?
Input a analog PC signal and
connected cable(DPMS).
Yes
No
ⴘDoes the sigmal appear at
R3020, R3021,R3022?
PC cable. Change a PC
cable. Change a main PCB ass’y.
Yes
No
Does the digital data appear at the
output of RA5008~RA5012?
Check IC5002.
Change a main PBA.
No
Check a LVDS cable?
Replace a lcd panel?
Please, Call to Samsung Co. LTD.
Yes
Power Indicator is off.
Lamp on, no video.
Caution Make sure to disconnect the power before working on the IP board.
4-5
4. Troubleshooting
4-3-1. Circuit diagrams and waveforms (Analog) when no screen is displayed
on the monitor
21 C5113
21 C5114_DE
21 R5085
21R5086
21
R5060_DE
21
R5034
2 1 C5039
21 R5043
21 C5058_DE
21 C5043
21 C5037
21 C5045
21
C5057
2 1R5035
21 C5044
21 C5041
2 1 C5055
21
R5050
21 C5066
21 R5051
2 1R5047
2 1R5044
21
C5042
21 C5065
2 1R5033
21 C5036
21 C5064
2 1R5045
21 C5040
21 C5035
21 R5049
21 R5042
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
21 C5063
21 C5061_DE
21 R5055
21 R5041_DE
21 C5046
21
R5057
21 C5062
21 R5040
2 1R5037
21 C5056
2 1R5036
21 C5060_DE
21 R5054
21 C5038
DTV_CVBS
25V47NF
25V47NF
1/10W100OHM
1/10W100OHM
100NF 25V
50V4.7NF
1/10W0OHM
47NF 25V
100NF 25V
1/10W47OHM
25V47NF
25V100NF
0OHM 1/10W
1/10W0OHM
100OHM 1/10W
1NF 50V
50V4.7NF
25V100NF
47OHM
25V47NF
25V47NF
100NF 25V
47NF 25V
47NF 25V
1/10W100OHM
47NF 25V
0OHM 1/10W
25V47NF
1/10W0OHM
1/10W100OHM
25V47NF
FGND
A3.3V
FGND
A3.3V_ADC
25V47NF
1/10W100OHM
1/10W470OHM
PC_V_SYNC
SC_CVBS_IN
VCOM1
PC_GREEN
PC_RED
SC_G
SC_R
SC_FB
SC_ID
SC_B
PC_BLUE
D2_DDC_SCL
D2_DDC_SDA
PC_H_SYNC
D2_HOT_PLUG
25V47NF
25V47NF
100OHM
1/10W100OHM
DTV_COMP_PB1
470OHM
100OHM 1/10W
DTV_COMP_Y1
1/10W100OHM
DTV_COMP_PR1
50V4.7NF
1NF50V
1/10W
390OHM
VCOM1
CVBS1
CVBS2
CVBS3
Y0
C0
Y1
C1
RIN2P
GIN2P
SOGIN2
BIN2P
VSYNC2
VSYNC0
HSYNC0
GND
AVDD_ADC
RIN0P
SOGIN0
GIN0P
VCOM2
BIN0P
VCOM3
GIN1P
SOGIN1
BIN1P
REFM
REFP
VCLAMP
VSYNC1
HSYNC1
DDCDA_CK
DDCDA_DA
REXT
RIN1P
DSUB_INPUT
1
21
C3106
21
R3036
2 1
R3031
8 7 6 5 4
3
2
1
IC3002
21
BD3102
21BD3101
21BD3100
1
1
1
1
MGND2
MGND1
9
8
7
6
5
4
3
2
15
14
13
12
11
10
1
CN3000
21
R3103
1
2
1
C3105
2
1
C3104
1
1
1
1
3
2
1
D3015
2 1
R3026
21
R3029
21
D3019
21
R3027
2 1
R3023
11
2
1
D3020
2
1
D3021
21
R3065
2
1
D3017
1
3
2
1
D3022
21R3060_DE
21
C3001
2 1
R3021
3
2
1
D3016
21R3028
1
3
2
1
D3014
3 2
1
Q3004
2 1
R3030
2
1
R3062
2 1
R3024
21
D3018
1
2 1
R3020
2 1
R3063
2 1
R3022
21
R3061_DE
2 1
R3025
2
1
R3064
2 1
C3002
3 2
1
Q3003
VLZ5V6B
5.6V
VLZ5V6B
5.6V
VLZ5V6B
5.6V
VLZ5V6B
5.6V
VLZ5V6B
5.6V
AT24C02N-10SC
-
DDC_WP
PC_BLUE
SCL_RXD
SDA_TXD
PC_GREEN
PC_RED
IDENT_PC
PC_V_SYNC
PC_H_SYNC
PC_5V
47OHM
1/10W75OHM
100V BAV99
-
FGND
FGND
50V
22PF
2.7KOHM
10KOHM
1/10W
BAV99
100V
BEAD_CHIP
BEAD_CHIP
BEAD_CHIP
FGND
100OHM
4.7KOHM 1/10W
100OHM
1/10W
1/10W10KOHM
FGND
100NF
25V
FGND
FGND
105-15202L88901-LF
22OHM
100PF
50V
100PF 50V
B5V_VCCA
-
-
-
-
2N7002
DDC_VCC
75OHM 1/10W
DDC_VCC
4.7KOHM 1/10W
A3.3V
75OHM 1/10W
-
BAV99
100V
47OHM
1KOHM
1/10W22OHM
10KOHM 1/10W
100OHM
1/10W
5.6VBZX84C5V6
100OHM
10V10UF
100OHM
D
S
G
SDA VSS
MODE,/WC
VCC
SCL E2
E1
E0
D
S
G
1
1
1111111111111111111
1
2 1
C5202
21
C5201
MGND2
MGND1
9
87654303
292827262524232221
20
2
191817161514131211
10
1
CN5002
8
6
4
2
753
1
RA5008
8
6
4
2
753
1
RA5012
8
6
4
2
753
1
RA5014
R5010
21
R5011
8
6
4
2
753
1
RA5009
1
R5004
8
6
4
2
753
1
RA5011
8
6
4
2
753
1
RA5015
8
6
4
2
753
1
RA5010
1
R5003_DE
CN_SMD_S_03010031HR-30
FGND
10KOHM
10KOHM
1/16W
100OHM
1/16W
1/16W47OHM
47OHM 1/16W
1/16W47OHM
100OHM 1/10W
100OHM
100OHM 1/16W
47OHM 1/16W
47OHM 1/16W
VDDC
A3.3V_VDDP
A3.3V
PANEL_VCC
10NF
50V
FGND FGND
UART_SEL2
SPDIF_OUT
TV_DTV_SEL
MSTAR_H_OUT
AMP_RESET
EEPROM_WP
SW_INVERTER
DTV_RX
DTV_TX
16V
100UF
4-6
4. Troubleshooting
4-3-2. Waveforms when no screen is displayed (Analog PC)
3(#0VUQVU4JHOBMPG*$
4-7
4. Troubleshooting
4-4. No Video (Digital-HDMI)
Symptom
The LED power turns on but the screen is blank when the DVI cable or HDMI cable is connected.
T
Major
checkpoints
Even though the LED power turns on, the screen is blank when connecting the DVI cable or HDMI cable.
Check the DVI cable or HDMI cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
T
T
T
T
Diagnostics
Main Board Front
IC3250
IC5002
D3006~D3013
D3204~D3211
Yes
No
Check the connection
of HDMI cable?
Input a HDMI cable.
Yes
No
ⴚ%PFTUIFEJHJUBMEBUBBQQFBS
BU%_%)%.*PS
%_%)%.*
Check HDMI cable.
Change the cable.
Yes
No
ⴙDoes the digital data appear at
output of IC3250 (PIN43,42,40,39,
37,36,34,33)?
Check the IC3250.
Change a main PBA.
No
Does the digital data appear at
output of IC5002?
Check the IC5002.
Change a main PBA.
Yes
Power Indicator is off.
Lamp on, no video.
Yes
No
Check a LVDS cable?
Replace lcd panel?
Please, Call to Samsung Co. LTD.
Caution Make sure to disconnect the power before working on the IP board.
4-8
4. Troubleshooting
4-4-1. Circuit diagrams and waveforms (Digital-HDMI) when no screen is
displayed on the monitor
HDMI_INPUT1
21
D3002
MGND5
MGND4
MGND3
MGND2
MGND1
9 8 7 6 5 4 3
21
20
2
19 18 17 16 15 14 13 12 11 10
1
CN3001
8 7 6 5 4
3
2
1
IC3001
111
1
1
2
1
C3025_DE
21
R3019
2 1
C3021_DE
21
R3012
2 1
D3044_DE
2 1C3029_DE
2 1
C3027_DE
2 1
C3023_DE
21R3004
3
2
1
D3009
2 1
C3030_DE
2 1
C3022_DE
2 1
C3026_DE
21R3016
21
R3011
3
2
1
D3006
21R3015
21R3003
21
R3018
2 1
C3019
21
R3013
21
R3066
3
2
1
D3011
2 1
R3057
2 1
R3009
2
1
C3024_DE
2 1
D3043_DE
2 1
C3028_DE
21R3005
21R3002
2 1
D3005
21R3007
3
2
1
D3013
21R3001
3
2
1
D3003
3
2
1
D3012
32
1
Q3001
21R3017
21R3006
21
R3010
3
2
1
D3001
3
2
1
D3007
3
2
1
D3010
3
2
1
D3004
21R3008
21R3014
3
2
1
D3008
2 1
C3020
VLZ6V2B 6.2V
VLZ6V2B 6.2V
VLZ5V6B
5.6V
VLZ6V2B
0OHM
AT24C02N-10SC
HDMI1_RX2+
HDMI1_RX2-
HDMI1_RX1+
HDMI1_RXCLK-
HDMI1_RX1-
HDMI1_RX0-
HDMI1_RXCLK+
HDMI1_RX0+
HDMI1_DDC_SDA HDMI1_DDC_SCL
HDMI1_5V
HDMI1_HOT_PLUG
IDENT_HDMI1
DDC_WP
100NF 16V
1/10W0OHM
1/10W0OHM
1/10W0OHM
BAV99
100V
3701-001367
1/10W0OHM
BAV99
100V
BAV99
100V
2N7002
1/10W47OHM
25V100NF
1/10W0OHM
1/10W0OHM
8.2V
RLZ8.2
FGND
FGND
FGND
FGND
FGND
BAV99
100V
BAV99
100V
A3.3V
DDC_VCC
16V
100NF
10KOHM 1/10W
100NF16V
1/10W4.7KOHM
100NF 16V
BAV99
100V
100NF
16V
16V100NF
0OHM 1/10W
BAV99
100V
0OHM 1/10W
16V100NF
16V100NF
1/10W22OHM
100NF16V
1/10W47OHM
10OHM 1/10W
BAV99
100V
22OHM 1/10W
1/10W0OHM
100V
BAV99
10KOHM 1/10W
10V10UF
100OHM 1/10W
BAV99
100V
1/10W
10KOHM
1/10W1KOHM
16V
100NF
SDA VSS
MODE,/WC
VCC
SCL E2
E1
E0
D
S
G
SIDE_HDMI_INPUT2
MGND5
MGND4
MGND3
MGND2
MGND1
9 8
7
6
5 4 3 2
19
18
17 16 15 14
13
12
11 10
1
CN3004
8 7 6 5 4
3
2
1
IC3003
2 1
D3212_DE
2 1C3210_DE
2 1
D3213_DE
2 1C3211_DE
21R3218
21R3217
21R3216
21R3215 21R3214
21R3213
21R3212
21R3211
2
1
D3214
2 1
C3202_DE
2 1
C3203_DE
2 1
C3204_DE
2 1
C3205_DE
2 1
C3206_DE
3
2
1
D3204
3
2
1
D3205
3
2
1
D3206
3
2
1
D3207
3
2
1
D3208
2 1
C3207_DE
2 1
C3208_DE
2 1
C3209_DE
21
R3219
3
2
1
D3209
3
2
1
D3210
3
2
1
D3211
2 1
R3206
21
R3202
3
2
1
D3200
21
D3201
21
R3205
21
R3207
32
1
Q3200
3
2
1
D3202
21
R3210
21R3209
21R3208
3
2
1
D3203
2 1
C3200
2 1
R3220
2 1
C3201
21
R3200
21
R3204
21
R3203
21
R3201
111
1
1
VLZ6V2B 6.2V
VLZ6V2B
6.2V
VLZ6V2B
6.2V
VLZ5V6B
5.6V
100NF
HDMI2_HOT_PLUG
HDMI2_RX0+
HDMI2_RX1-
HDMI2_RX0-
HDMI2_RXCLK-
DDC_WP
HDMI2_DDC_SCL
HDMI2_DDC_SDA
HDMI2_RX1+
HDMI2_RX2+
HDMI2_RXCLK+
HDMI2_5V
HDMI2_RX2-
IDENT_HDMI2
3701-001388
SP06-14555-02
FGND
100NF 16V
100NF
16V
1/10W0OHM
1/10W0OHM
0OHM 1/10W
1/10W0OHM 1/10W0OHM
0OHM 1/10W
1/10W0OHM
0OHM 1/10W
FGND
16V100NF
16V
100NF16V
16V100NF
100NF 16V
100V
BAV99
100V
BAV99
BAV99
100V
BAV99
100V
100V
BAV99
16V100NF
100NF 16V
100NF 16V
A3.3V
BAV99
100V
100V
BAV99
BAV99
100V
1/10W1KOHM
1/10W0OHM
FGND
RLZ8.2
8.2V
10OHM 1/10W
4.7KOHM 1/10W
2N7002
100V
BAV99
1/10W100OHM
22OHM 1/10W
22OHM 1/10W
BAV99
100V
FGND
10UF 10V
DDC_VCC
10KOHM
1/10W
25V100NF
1/10W10KOHM
1/10W47OHM
1/10W47OHM
1/10W10KOHM
FGND
AT24C02N-10SC
1/10W
0OHM
1/10W
SDA VSS
MODE,/WC
VCC
SCL E2
E1
E0
D
S
G
OPTION
OE
0 0 0
SEL1
1 0
SEL2
X 1 0
HPDA HPDB
HPD_SINK
L L
HPD_SINK
L
L0
SEL2_HDMI
0
OC_S2 OC_S1 OC_S0
0 0
V_SWING
500
DE_EMPHASIS
0
21
R3265_DE
2
1
R3267_DE
21
R3268
2
1
R3264
2
1
R3254
2 1
R3253
3
2
1
Q3201
21
R3256_DE
21
R3257_DE
21
R3258_DE
21
R3261
21
R3260
21
R3259
21
C3253
21
R3250_DE
21
R3251
2 1
C3250
2 1
C3251
2 1
BD3250
MGND1
9
8
7
6
565554
53
52
51
50549484746454443
42 41
40
4 39
38 37 36 35 34 33 32 31 30
3
29
28
272625
24
23
22
21
202191817
16
15
14
13
12
11
10
1
IC3250
B3.3V_H
B3.3V_H
B3.3V_H
B3.3V_H
B3.3V_H
HDMI1_RXCLK+
HDMI1_RXCLK-
HDMI1_DDC_SCL
HDMI1_DDC_SDA
SEL1_HDMI
0OHM
FGND FGND
0OHM
0OHM
0OHM
4.7KOHM
10KOHM1/10W
FGND
KTC3875S-Y
FGNDFGNDFGND
0OHM
0OHM
0OHM0OHM
0OHM
0OHM
FGND
50V
1NF 1/10W
1.8KOHM
FGND
1.5KOHM
1/10W
FGND
FGND
10UF
10V
100NF 25V
BEAD_CHIP
HDMI1_RX1+
HDMI1_RX1-
HDMI1_RX0+
HDMI1_RX0-
HDMI1_HOT_PLUG
D2_HOT_PLUG
D2_DDC_SDA
D2_DDC_SCL
D2_RXCLK-
D2_RX0­D2_RX0+
D2_RX1­D2_RX1+
D2_RX2­D2_RX2+
HDMI2_DDC_SCL
HDMI2_DDC_SDA
HDMI2_HOT_PLUG
HDMI2_RX2+
HDMI2_RX2-
HDMI2_RX1+
HDMI2_RX1-
HDMI2_RX0+
HDMI2_RX0-
HDMI2_RXCLK+
HDMI2_RXCLK-
HDMI1_RX2+
HDMI1_RX2-
PI3HDMI201ZFE
D2_RXCLK+
E
B
C
D2-A
D2+A
GND
CLK-B
CLK+B
VDD
D0-B
D0+B
GND
D1-B
D1+B
VDD
D2-B
D2+B
GND
HPDB
SDAB
SCLB
EQ_S1
SEL2
EQ_S0
OC_S2
OC_S1
OC_S0
GND
D2+
D2-
VDD
D1+
D1-
GND
D0+
D0-
VDD
CLK+
CLK-
GND
SCL_SINK
SDA_SINK
HPD_SINK
VDD
SEL1
OE#
HPDA
SDAA
SCLA
GND
CLK-A
CLK+A
D0-A
D0+A
GND
D1-A
D1+A
VDD
VDD
4-9
4. Troubleshooting
4-4-2. Waveforms when a blank screen is displayed (Digital-HDMI)
%JHJUBM0VUQVU%BUBPG*$
4JHOBMPG)%.*%BUB
4-10
4. Troubleshooting
4-5. No Picture (Tuner_CVBS)
Symptom The LED power turns on but the screen is blank when the RF cable is connected.T
Major
checkpoints
Even though the LED power turns on, the screen is blank when connecting the RF cable.
Check the RF cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
T
T
T
T
Diagnostics
Main Board Front
TU6001
Yes
No
Power Indicator is off.
Lamp on, no picure.
Connect the RF cable and
check RF signal.
Yes
No
ⴛ%PFTUIFTJHOBMBQQFBSBU
-
Check the Tuner Vcc 5V.
Change a main PBA.
Yes
No
ⴛ%PFTUIFTJHOBMBQQFBSBU
PG56
Change a main PCB ass’y.
No
ⴚDoes the digital data appear
at output of RA5008 ~RA5012?
Check a IC5002.
Change a main PCB ass’y.
Yes
No
Check a LVDS cable?
Replacea lcd panel?
Please, Call to Samsung Co. LTD.
Caution Make sure to disconnect the power before working on the IP board.
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