Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung TV CS-29B850 Troubleshooting
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Troubleshooting
4. Troubleshooting
4-1 Troubleshooting
4-1-1 FirstChecklistforTroubleshooting
1. Power LED: Check that the LED works when the power cord is connected to a 200V wall outlet.
2. LED Indicators: See table 4-1-2 Basic Troubleshooting: LED Diagnosis on the Front Panel.
3. In case of a power failure or abnormal screen, check the following items.
Check that the power cord is correctly connected to a 200V wall outlet.
Check that the Master Switch has been pressed.
Ch eck that the transmitter is turned on.
Check that transmitter device selection is set to TV.
Check that the signal cable is properly connected.
Check that channel setting has been set.
Samsung Electronics 4-1
Troubleshooting
4-1-2 CheckpointsbyErrorMode
1. TroubleshootingSummary
Problem Solution
The power does not turn on. Check if the power cord is properly connected.
Air broadcasting does not work. Check if the antenna is properly installed.
Cable broadcasting does not work. Subscribe to a local cable broadcasting firm and get support.
Satellite broadcasting does not work. Install a satellite antenna (Parabola) and connect it to the TV.
2. Menu&RemoteControl
Problem Solution
PresstheSelectDevicebuttontoselecttheTVorexternaldevice.
Replacethebatteryoftheremotecontrolwithanewone.
Insertthebatterymakingsurethepolarity(+,-)iscorrect.
Checkiftheangleorthedistanceissufficient,orifthereisany
The remote control does not work. interference between the product and the remote control.
Makesuretheuserhaspressedthecorrectbutton.
ToavoiddirectsunlighttothereceivingpaneloftheTV,removeany
indoor lighting or change the location of the TV.
CheckifthepowerswitchatthebackleftoftheTVisturnedon..
PresstheSelectDevicebuttontoselecttheTV.
Cannot change the channel with the remote control. Changethechannelusingtheremotecontrolofthecableorsatellite
receiver.
Press the TV/AV button and check if the AV item is grayed out. When the
Cannot select an A/V channel. AV item is grayed out, you cannot select an A/V channel. Check if the
connector is properly connected.
Check if the menu is grayed out. If a menu is grayed out, it cannot be
Cannot select a menu.
selected.
4-2 Samsung Electronics
Troubleshooting
3. Screen
Problem Solution
Checkifthepowercordisproperlyconnected.
The screen is black and there is no sound. Turnonthepower.
SelectanAVchannelthatcorrespondstotheexternaldevice.
Only the screen is blank/it is dark or too bright. Adjust the screen brightness.
Thescreenisblue/theexternalchannelisnot Checkiftheconnectorisproperlyinstalled.
displayed. SelectanAVchannelthatcorrespondstotheexternaldevice.
Checkiftheantennaisproperlyinstalled.
The screen overlaps (double/triple).
Adjusttheposition,angleordirectionoftheantenna.
Checkiftheantennahasbeenbentormovedbythewind.
The screen is snowy or unclear. The picture quality
Checktheantennaforitslifetime.
gets worse when it is windy
(Normally 3 - 5 years, 1-2 years near the coast)
Dotted or semi-dotted lines are displayed on the Install the antenna as far away from the road as possible.
screen.
Adjustthecolordensity.
The screen is black and white.
Checkiftheconnectorisproperlyinstalled.
The colors of the screen are odd/strange. Adjust the color tones.
Unusual lines appear on the screen. Keep the antenna away from the power cord or connectors if possible.
Unusual lines appear on the screen when watching Keep the video player as far away from the TV as possible.
or recording to video.
4. Sound
Problem Solution
Increasethevolume.
There is no sound.
PresstheMutebutton.
Increasethevolume.
The sound is very low.
SettheautovolumecontroltoON.
There is a lot of noise. Keep the antenna away from the power cord or connectors if possible.
The selected language does not appear. PresstheMultiplexbuttontoselecttheTV.
Samsung Electronics 4-3
Troubleshooting
5. Channel
Problem Solution
Checkiftheantennaisproperlyinstalled.
There are no channels available. PresstheAutoChannelbuttontostorechannels.
Contactyourlocalbroadcastingservicestation.
Adjusttheposition,angleordirectionoftheantenna.
ActivatetheReceptionSensitivityBoostfeature.
Some channels are not available. Contactyourlocalbroadcastingservicestation.
UsethenumberkeystoselectaspecificchannelandpressStore/Clear
to memorize it.
Only the UHF (14-69) channels are not available. Check if the antenna is able to receive UHF signals.
6. Others
Problem Solution
ThisnoisemayoccurwhentheplasticmaterialinsidetheTVexpandsor
The TV makes a noise as if something is dropping
contracts according to the seasonal temperature or humidity. This is like the
inside.
noise from a furniture/cabinet/sink unit, and there is no need for concern.
4-4 Samsung Electronics
Troubleshooting
7.BasicTroubleshooting:DiagnosisofLEDontheFrontPanel
LED
:Light is On
:Light is Blinking
:Light is Off
Power Description
This happens when the Master Switch is not pressed or the power cord is disconnected.
This happens when the power cord is connected.
The LED blinks, while the unit is starting up or the unit is turning off.
8.TroubleshootingbytheChecksum
Diagnosisoftroublebythechecksumisneitherreliablenorconvenient.
You can only use the checksume of the current direct-view TV to determine whether the software is corrupted or not.
The Checksum value is determined according to the version of the software loaded on the set.
Therefore, you can determine whether the software has been properly downloaded, if you know the correct checksum for that
version of the software.
You can check the checksum according in the following order.
Factory Mode Checksum Enter OutputChecksum(e.g.0xab2b)
ChecksumExamples
T-UR2PEANS-0001checksum=2A0B
Samsung Electronics 4-5
Troubleshooting
9.FlowChartforMalfunction
Does the TV work? Yes Is there something on Yes Does the OSD menu on the
the Screen. screen work?
No
Yes
UOCTOPICReplace.
Is the power cord or the
master switch out of order?
Yes
IsCRThigivoltage No
Check that the cables ard
been measured?
properly connected to Main
Board.
Yes
Is
the cable from the No
MainBoardththeCRTAss'y Connect the cable
properly innected?
SOUND IC TUNER
PLM1000 (Only
CS29ZxxZ49have)
MICOM 1 CHIP IC
SCARTJACK
VERTICALIC
OUTPUTTRQ401
BRIDGEDIODE
SMPS-IC FBT
MAINTRANS DY-JACK
4-6 Samsung Electronics
Troubleshooting
4-1-3 TroubleshootingProceduresbyASS'Y
1 NOPower
- Power part of the Main Board Check.
No Picture & No Sound
Is the power cord or the master
switch out of order?
Yes Yes Yes Check the others part
Check the FUSE "FP801S" Check the "D801S" #1 Check the IC801S #1
W6754F
Yes No No
Change "FP801S" Change "D801S" Change "IC801S"
Yes
Complete
FD801S
FP801S SOUND IC
D801S
SMPSPOWERIC D809A
Samsung Electronics 4-7
Troubleshooting
2. NoSound
- when the power is normal
No sound (1st power OK)
Checkthe+14Vline
No
Yes Yes Yes
Check FD801A Check D809A Check IC201S Change IC602
No No
Change FD801A Change D809A
Complete
FD801S
SOUND IC
MICOM CHIP IC
D809A
4-8 Samsung Electronics
Troubleshooting
3.NoPicture
- when the power is normall
No picture (1st power OK)
Yes
Checkthe+125Vline ChecktheothersB+line
No
"D811"(D811A) Yes T444B+Pin#3 Yes Yes
Check D407 CHECKCRTASS`Y
open and check Open and check
No No
No
Yes
Change the "D811" (D811A) Checkthe"Q401"
No
Change D407
Changethe"Q401"
Complete
MAINTRANS D811 FBT D407 OUTPUT
TRQ401
Samsung Electronics 4-9
Troubleshooting
4-1-4 TroubleshootingbyBlocks
1.Tuner Diagnosis
IfthereisnosignalmeasuredeventhoughtheRFsignalreceivedbytheexternalantennaisinputtotheMainBoardTuner.
- Supplied Power: 5V, 8V, 33V
- RFTroubleCheck:CheckCVBSoutput
- AUDIO Trouble Check: Check SiF Signal output
TP06 TP05
4-10 Samsung Electronics
Troubleshooting
2.ExternalInputDiagnosis
Component inputs and one monitor output (Video, Audio) are supported.
The signal is input to UOC TOP IC through the ports, and the signal selected in UOC TOP IC is output.
If the signal input and output are not detected, check the following.
- Supplied Power: UOC TOP IC (5V, 3.3V, 8V)
- Input Problem Check: Check the connecting jacks.
- Output Problem Check: Check the UOC TOP IC
TP06 TP05
Samsung Electronics 4-11
Troubleshooting
3. TDA12110 Diagnosis
IF+MICOM+VIDEO
4-12 Samsung Electronics
Troubleshooting
4. TDA7297SA Diagnosis
- Supplied Power: 14V
- InputProblemCheck:L/R
- OutputProblemCheck:L+,L-,R+,R
TP06 TP05
Samsung Electronics 4-13
Troubleshooting
4-2 Adjustment
4-2-1 ServiceInstruction
1.GeneralAdjustment:
In general, a color TV can provide ideal visual quality by adjusting the basic settings such as the vertical size, horizontal size,
focus, etc.
Display a black and white picture on the screen to check if the picture is clearly displayed.
Iftherearesome`spotted'pointsonthescreenwhendisplayingablackandwhitepicture,degaussthescreenusingthe
degauss coil. If the spotted points remain, re-adjust the purity and the convergence.
Thiscompletesthebasicperformanceexamination.
4-14 Samsung Electronics
Troubleshooting
4-2-2 HowtoAccessServiceMode
1. To enter Service Mode, press the keys on the remote control according to the following sequence. (in Stand-by status)
To Enter: Info Menu Mute POWERON
2. The initial screen of Service Mode.
Option1 XX XX XX XX XX
Option2
HotelOption
Deflection
VideoAdjust1
VideoAdjust2
VideoAdjust3
VideoAdjust4
YCDelay
Others
BusStop Off
Checksum 0000
G2Adjust
Reset
T-UR2PEANS-0001
3. Functions of the Keys within Service Mode.
MENU Show all menus
/ Move the cursor to select an item.
/ Adjust the selected configuration value
4. W/B Setting
No Item Data RequiredAdjustment
X:265+-5y:265+-5Y:32+-3
1 White Balance White Balance (Standard Data)
X:265+-5y:265+-5Y:1.6+-0.2
Toshiba Pattern
2 Screen Voltage Same As S17A Chassis
G2Adjust
Samsung Electronics 4-15
Troubleshooting
4-2-3 FactoryData Theunderlinedareitemsappliedduringtheserviceadjustment.Noneoftheothersshouldbeadjusted.
1. Option1
InitialData
No Item Selection AsiaEast AsiaEast AsiaEast
others Indonesia Thailand
1 Video mute 100msec~1000msec/Off 900msec 900msec 900msec
2 System CS/CZ CS CS CS
1SCART/2Scart/2Scart+S/2Scart+DVD/
3 AVJack 2Scart+S+DVD/1RCA/2RCA/2RCA+S/ 2RCA+DVD 2RCA+DVD 2RCA+DVD
2RCA+DVD/2RCA+S+DVD
4 Sound Line Stereo/Stereo/Nicam/V-dolby NICAM NICAM NICAM
5 High Deviation ON/Off On On On
6 Volume Curve Large/Small/East asia Large Large Large
7 Initial Lang English/Indonesia/Malaysia/Thailand/Vietnam By country By country By country
OSD Language/West Europe/East
8 TTX Off Off Off
Europe/Russian/Ukranian/Greek-Turkey/Off
9 TTX Flof/List Flof/List Flof Flof Flof
10 V-Guard On/Off On On On
11 Sound Detect BG/DK/I/M BG BG BG
12 DNIeJR On/Off On On On
13 Indonesia Mode On/Off Off On Off
14 PIP On/Off Off Off Off
2. Option
InitialData
No Item Selection AsiaEast AsiaEast AsiaEast
others Indonesia Thailand
1 LNA On/Off Off Off Off
2 X-RAYProtect On/Off Off Off Off
3 Sound Carrier Mute On/Off Off Off Off
4 Sound Mode India/Europe India India India
5 Tact Key On/Off On On Off
6 CRT 4:3/16:9 4:3 4:3 4:3
7 Size On/Off On On On
8 PLM1000 On/Off Off Off Off
3. Hotel Option
InitialData
No Item Selection AsiaEast AsiaEast AsiaEast
others Indonesia Thailand
1 Hotel Mode On/Off Off Off Off
2 Power On Channel 0~99 1 1 1
3 Power on volume 0~100 10 10 10
4 MaxVolume 0~100 100 100 100
5 Pannel Button Lock On/Off Off Off Off
6 Power On Source Off/TV/EXT1/EXT2 Off Off Off
4-16 Samsung Electronics
Troubleshooting
Samsung Electronics 4-17
Troubleshooting
4. Deflection
No 680v around Adjust Initial Data Remarks
1 V Amp Adjust 30
2 V Shift Adjust 39
3 H EW Adjust 48
4 H Shift Adjust 32
5 V Linearity FIX 22
6 V S-Correction FIX 38
7 V Slope FIX 47
8 V Scroll FIX 22
9 V Zoom FIX 50
10 H Parabola Adjust 34
11 Upper Corner Adjust 53
12 Lower Corner Adjust 53
13 H Trapezium Adjust 31
14 Bow Adjust 39
15 Angle Adjust 14
5. Video Adjust 1
No Item Adjust Initial Data Remarks
1 RCutoff Adjust 32
2 GCutoff FIX 32
3 B Cutoff Adjust 32
4 RDrive Adjust 21
5 GDrive FIX 12
6 B Drive Adjust 22
7 Sub Bright Adjust 10
8 Sub Contrast Adjust 15
9 Bluescreen Contrast Adjust 15 680v around
10 G2AdjustBright FIX 40
11 AKB Option FIX 0
12 Cathode Drive Level FIX 5
13 TTX Bright FIX 10
14 TTXRGBBright FIX 15
15 TTX Position FIX 11
4-18 Samsung Electronics
Troubleshooting
6. Video Adjust 2
No Item Data Initial Data Remarks
1 Melody Volume FIX 35
2 PAL/SECAM Sub Color FIX 20
3 NTSC Sub Color FIX 20
4 NTSC Sub Tint FIX 12
5 YUVSubTintRF FIX 32
6 YUV Sub Tint AV FIX 35
7 YUVSubTintRGB FIX 35
8 Soft Clipping Level FIX 3
9 Peak White Limit FIX 15
10 SECAM B-Y Offset FIX 1
11 Peaking CF0 & Delay Mode FIX 2
12 Sub Sharpness FIX 23
13 VideoDependentCoringRF FIX 2
14 Video Dependent Coring AV FIX 2
15 Zoom amp FIX 10
7. Video Adjust 3
No Item Data Initial Data Remarks
1 PIP Contrast FIX 8
2 PIP Bright FIX 6
3 PIP Tint FIX 64
4 PIP Color FIX 12
5 PIP YC Delay FIX 6
6 PIP PAL V.Pos FIX 0
7 PIP NTSC V.Pos FIX 7
8 PIP H.Pos FIX 2
9 PIPRCutoff FIX 10
10 PIPGCutoff FIX 10
11 PIP B Cutoff FIX 10
12 PIPRDrive FIX 90
13 PIPGDrive FIX 90
14 PIP B Drive FIX 90
Samsung Electronics 4-19
Troubleshooting
8. Video Adjust 4
No Item Data Initial Data Remarks
1 RFAGC Adjust 31 AGCvoltage2.48v
2 IFAGCSpeed FIX 1
3 IF Demodulator FIX 38
4 Fast Filter IF PLL FIX 0
5 RFFOA/FOB FIX 3
6 AV FOA/FOB FIX 0
7 RFPALIdentSensitivit FIX 2
8 RFNTSCIdentSensitivit FIX 2
9 AV PA/NT Ident Sensitivit FIX 2
10 DCXO Caps/NICAM Center FIX 54
11 DCXOScalingControlGain FIX 3
12 Threshold Sound 1 Carrier FIX 25
13 PIPAGCMode FIX 1
9. Video Adjust 5
No Item Data Initial Data Remarks
1 RFAGC Adjust 31
2 IFAGCSpeed FIX 1
3 IF Demodulator FIX 38
4 Fast Filter IF PLL FIX 0
5 RFFOA/FOB FIX 3
6 AV FOA/FOB FIX 0
7 RFPALIdentSensitivit FIX 2
8 RFNTSCIdentSensitivit FIX 2
9 AV PA/NT Ident Sensitivit FIX 2
10 DCXO Caps/NICAM Center FIX 54
11 DCXOScalingControlGain FIX 3
12 Threshold Sound 1 Carrier FIX 25
13 PIPAGCMode FIX 1
14 ADCLEV FIX 16
15 CutOfffControlRange FIX 1
10. YC Delay
No Item Data Initial Data Remarks
1 PAL Delay FIX 8
2 SECAM Delay FIX 8
3 NTSC Delay FIX 8
4 PAL AV Delay FIX 12
5 SECAM AV Delay FIX 12
6 NTSC AV Delay FIX 12
4-20 Samsung Electronics
Troubleshooting
11. Others
No Item Data Initial Data Remarks
1 Service Blanking FIX 0
2 Black Area FIX 1
3 Black Stretch FIX 2
4 Blue Stretch FIX 0
5 NoRedReduction FIX 1
6 OSD Brightness FIX 15
7 PWL Active FIX 1
8 Bypass Peaking Delay FIX 0
9 RatioPre&AfterShoot FIX 2
10 Ratioposi&NegaPeaks FIX 2
11 Dynamic Skin FIX 1
12 Gamma&WhiteStretch FIX 0
13 DCTransferRatio FIX 0
14 NTSCMatrix FIX 1
15 Component Dynamic Skin FIX 2
Samsung Electronics 4-21
Troubleshooting
4-2-4 ServiceAdjustment
1.AdjustingthePictureSize
Since the K16C chassis includes a deflection adjustment of the Factory Data, adjustments must be performed according to the
following procedures when replacing the Main Board.
1. Display the Lion pattern.
2. Press "PowerOffInfoMenuMutePowerOn" using the remote control and enter Factory Mode.
3. Enter Deflection Mode.
4. Adjust the V-AMP, V-SHIFT, H-EW and H-SHIFT items so that the width becomes 92 and the height becomes 92.
4-22 Samsung Electronics
Troubleshooting
2.AdjustingthePictureStraightLines
1. Display the Cross Hatch pattern.
2. Adjust settings other than V-AMP, V-SHIFT, H-EW and H-SHIFT so that straight lines are displayed without curves.
3. Adjust BOW and the Angle settings so that the center line 4. Adjust the H-Parabola and H-Trapezium settings so thatthe
becomes a straight line. left and right lines become straight.
5. Adjust the Upper Corner and the Low Corner settings so 6. Adjust the V-Linearity and V-SC settings so that the intervals
thatthe end of the lines become straight. of the horizontal lines become uniform.
7. When the adjustments are complete, display the Lion pattern and check that the picture size has not been changed. If there is no
change, finish the adjustments.
Samsung Electronics 4-23
Troubleshooting
4-2-5Replacements&Calibration
No Item Data Remark
1 Main B/D Adjust Tilt, Adjust Screen, Adjust Focus, Adjust Factory Data, Adjust W/B Toshiba Mode
2 Power B/D Adjust Screen, Adjust Focus Toshiba Mode
3 CRTAssy - -
4 FBT Adjust Screen, Adjust Focus Toshiba Mode
5 SUB - -
Adjusting the Focus
YoumustadjustthesettingsinthefollowingorderfortheK16CchassiswhenreplacingtheCRTPCB,FBT,orCRT.
1. Display the Cross Hatch pattern.
2. Set the Screen Adjustment to "OK".
3. TurntheFocusVRsothatthehorizontalandverticallinesareclearlydisplayed.
4.ChecktheFocusfortheentirescreenandadjusttheFocusVRifnecessary.
Focus VR
Adjusting the Screen Voltage
1. Select: PowerOFF Info Menu Mute POWERON
2. Initialize all settings to the values appropriate to the corresponding model make sure the video adjust 1 is the factory date,just as
the following picture.
4-24 Samsung Electronics
Troubleshooting
3. Select:Mute,andgetintotheG2adjustToshibapattern.
Screen VR
4. FirstcheckIBRMin"G2Adjust"ofFactoryandadjustScreenVRuntil"ScreenAdjust:OK",likethepicture.
Adjusting the White Balance
1. Select: PowerOFF Info Menu Mute POWERON
2. Initialize all settings to the values appropriate to the corresponding model.
3. Display the Toshiba pattern and adjust the White Balance using CA100 with the coordinates of the corresponding model.
[CA100]
Samsung Electronics 4-25
Troubleshooting
5. Enter Video Adjust1 of Service Mode. Adjust Low/Light.
- Adjust Sub Bright to set Y.
- Adjust B Cutoff to set y.
- AdjustRCutofftosetx.
6. Enter Video Adjust1 of Service Mode. Adjust High/Light.
- Adjust Sub Contrast to set Y.
- Adjust B Drive to set y.
- AdjustRDrivetosetx.
7. Check Low/Light and readjust it if its value has been changed.
8. If you have readjusted Low/Light, readjust High/Light until the two values are identical to the coordinates of the corresponding
model.
White Balance Standard Data
No Item Data RequiredAdjustment
White Balance X:265+-5y:265+-5Y:32+-3 White Balance (Standard Data)
1
X:265+-5y:265+-5Y:1.6+-0.2
Check List for the Screen Voltage and White Balance Adjustment
1. The Screen Voltage and White Balance are connected to each other, and both of them have to be configured to the correct
values.
2. Adjust the White Balance after the Screen Voltage was adjusted, and check if the Screen Voltage is normal after adjusting the
White Balance.
3. If the White Balance is readjusted, check the Screen Voltage again.
4. When the adjustment is finished, check the following checklist.
- f there is a spot on the screen when turning the TV set off/on, adjust the Screen Voltage again.
- f there is a ghost line on the screen, adjust the Screen Voltage again.
4-26 Samsung Electronics
MEMO
Samsung Electronics 4-27
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