Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung Plasma PL42C450B1 chassis F74A samsung_PL42C450B1_sm_completo f74a-p-c45x-4-troub
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Troubleshooting
4.Troubleshooting
4-1 CheckpointsbyErrorMode
4-1-1 FirstChecklistforTroubleshooting
1. 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 or loose cable connection.
- Check to see if the cables are connected according to the connection diagram.
2. Check the power input to the Main Board.
3. CheckthevoltageinandoutbetweentheSMPSMainBoard,betweentheSMPSX,YMainBoard,
and between the Logic Boards.
Samsung Electronics 4-1
Troubleshooting
4-1-2 CheckpointsbyErrorMode
NoPower
- The LEDs on the front panel do not work when connecting the power cord.
Symptom - The SMPS relay does not work when connecting the power cord.
- The unit appears to be dead.
The SMPS relay or the LEDs on the front panel does not work when connecting the power cord
if the cables are improperly connected or the Main Board or SMPS is not functioning.
Inthiscase,checkthefollowing:
Major
- Check the internal cable connection.
Checklist
- Check the fuses.
- Check the output voltages of the SMPS.
- Replace the Main Board.
No Power
1
Yes
Check that the AC power cord is Connect the AC power cord
connected?
Refer to image of
No
Fig. 4-1.
If LED is set up as
No
beingONwhenPOWER-ON, Replace Fuse (FE801)
check the ligt-on in LED?
Yes
2
No
Is the AC Inlet socket Connect AC Inlet socket
connected?
Yes Refer to image of
Fig. 4-1.
A
4-2 Samsung Electronics
Troubleshooting
A
3
Check the connection between No
FuseF801S,forchecking Replace Fuse
SMPS's Fuse?
Refer to image of
Yes
Fig. 4-1.
4
No
ChecktheNo.4STAND-BY Replace the SMPS
power of CN801?
Yes Refer to image of
Fig. 4-1.
5
Replace the Main Board
Refer to image of
Fig. 4-1.
Samsung Electronics 4-3
Troubleshooting
1 3 2 4 5
<42" PDP>
1 3 2 4 5
<50" PDP>
4-4 Samsung Electronics
Troubleshooting
Whentheunitisrepeatedlyturningonandoff
Symptom The SMPS relay is repeatedly turning on and off.
Ingeneral,theSMPSrelayrepeatedlyturnsonandoffbytheprotectionfunctionduetoadefect
on a board connected to the SMPS.
- DisconnectallcablesfromtheSMPS,operatetheSMPSaloneandcheckiftheSMPSworks
Major
properly and if each voltage output is correct.
Checklist
- IfthesymptomcontinuesevenwhenSMPSisoperatingalone,replacetheSMPS.
- IfthesymptomisnotobservedwhenoperatingtheSMPSalone,findanydefective
assemblies by connecting the cables one by one.
WhenseparatingandconnectingthecablessuchasSMPS,XMAINBoardandYMAINBoard,
Caution asparkmaybegeneratedbytheelectricchargeofthehighcapacitycapacitor.Therefore,wait
some time after disconnecting the power cord from the unit.
When the unit is repeatedly turning on
and off
1
CheckthattheVa,VsvoltageofSMPS Yes
TunetheVa,VsorReplacetheSMPS
match the voltages marked on the
module label?
Refer to image of
No Fig. 4-2.
No
Did problem improve? Replace the Main Board
Yes
Did problem improve? No YMainBoardcablecheckorReplace
the SMPS
Yes
B
Samsung Electronics 4-5
Troubleshooting
B
No XMainBoardcablecheckorReplace
Did problem improve?
the SMPS
Yes
Did problem improve? No Logic Board cable check or Replace
the SMPS
Yes
Did problem improve? No
ReplacetheX,YBufferBoard
4-6 Samsung Electronics
Troubleshooting
1
<42" PDP>
1
<50" PDP>
Samsung Electronics 4-7
Troubleshooting
NoSound
Symptom Video is normal but there is no sound.
Generally there are four things that can cause this issue.
- Speakers not connected
Major
- Speakers are defective
Checklist
- Main board audio error
- SMPS not supplying voltage to the main board
No Sound
1
Is the cable connection between the Yes
Make the connection
Main Board and the speaker
properly connected?
Refer to image of
No Fig. 4-3.
2 No
Checkthatthevoltageonpin7,8of Replace the SMPS
CN801 has 12V?
Yes Refer to image of
Fig. 4-3.
Use an oscilloscope to
monitor the output of the speaker jack. No
Replace the Main Board
Does the wave form match the
wave form listed?
Yes
3
Replace the Speaker
SoundOutputShape
Refer to image of
Fig. 4-3.
4-8 Samsung Electronics
Troubleshooting
2 1 2
<42" PDP>
2 1 2
<50" PDP>
Samsung Electronics 4-9
Troubleshooting
4-1-3 FaultsandCorrectiveActions
Symptom RelatedImage CausesandCountermeasures
Address buffer defect
A blank vertical cell - Replace the corresponding
(block) appears on the upper/lowerbuffers(E,F)
screen. COF defect (burnt)
- Replace the module
A green screen appears
The Scale is not reseting
when the TV is turned
- Replace the Main board
on.
Incorrect program version
The OSD box appears
- Check the version of each program
but there is no text.
- Replace the Main board
Upper/LowerYBufferdefect
A blank upper (or lower)
- Replace the corresponding upper/
block appears on the
lower buffers
screen.
4-10 Samsung Electronics
Troubleshooting
Symptom RelatedImage CausesandCountermeasures
Either the main or
sub picture does not Replace the Main board
appear.
The SMPS voltage is incorrect
A vertical green line - Adjust the SMPS voltage according
appears on the screen. to the voltage printed on the module
label
X-Mainboarddefect
Dim screen
- ReplacetheX-Mainboard
(blurred in red)
Samsung Electronics 4-11
Troubleshooting
4-1-4 TroubleshootingProceduresbyassembly
IfMajorSymptomsishappened,CheckAssemblyrefertotableasfollow.
Assembly MajorSymptoms
SMPS-PDP TV Nopower,Blankscreen,theRelayrepeatsOnandOff
ASSYPDPP-X-MAINBOARD Blank screen
ASSYPDPP-Y-MAINBOARD Blank screen
ASSYPDPP-LOGICMAINBOARD Blankscreen,Screennoise
ASSYPDPP-X-MAINBUFFERBOARD Upper screen is blank
ASSYPDPP-Y-MAINBUFFERBOARD Lower screen is blank
ASSYPDPP-E-BUFFERBOARD Corresponding Buffer Board block screen is blank
ASSYPDPP-F-BUFFERBOARD Corresponding Buffer Board block screen is blank
NoPower,Abnormalscreenforeachinputsource,PIPscreen
ASSYPCBMISC-MAIN
trouble,Soundtrouble
The side function key does not work properly.
ASSYBOARDP-TOUCHFUNCTION&IR Theremotecontroldoesnotworkproperly,theLEDdoesnot
work properly.
4-12 Samsung Electronics
Troubleshooting
4-2 Adjustment
4-2-1 ServiceInstruction
Beforeperformingservice
1. Check if the measurement and test equipment is working properly.
2. Secure sufficient work space for disassembling the product.
3. Prepare a soft pad for disassembling the product.
Serviceadjustmentafterboardreplacement
1. PDPOptionofFactoryModesettheFactoryDataTypeitemasthesuitablevalueofrelevantmodel.
2. Adjust Calibration of Factory Mode for each mode.
3. Adjust White Balance of Factory Mode.
1. WritedownthevalueofHDMIWhiteBalanceofFactoryModebeforereplacingBoard.
2. PDPOptionofFactoryModesettheFactoryDataTypeitemasthesuitablevalueofrelevantmodel.
3. SetthevalueofHDMIWhiteBalancewiththevaluewrittendownbefore.
Samsung Electronics 4-13
Troubleshooting
4-2-2 HowtoAccessServiceMode
ForLatinAmerica
1. General Remote
ToEnter: POWEROFF MUTE 1 8 2 POWERON
ToExit: POWEROFF POWERON
2. Factory Remote
ToEnter: POWERON INFO FactoryKey (Intervalbetweenkeystrokes:lessthan3sec)
ToExit: Press the Factory key twice. (Pressing once enters Aging Mode)
3. Settings when entering Factory mode
- SharpScreen(Dynamic),ColorTone(Cool1),Factory(DynamicCEOff)
4. Adjustment Procedures
- ChannelKey:Selectanitem.
- Volume Key:Adjustthevalueupordown.
- MENUKey:SavethechangestotheEEPROMandreturntothehigher-levelmode.
- UsingtheNumeric(0~9)keys,youcanselectachannel.
- UsingtheSOURCEkey,youcanswitchAVmodes.
5. InitialSERVICEMODEDISPLAYState
Option T-TDT5IBRC-XXXX.X
Control T-TDT5IBRS-XXXX.X
SVC EDID SUCCESS
Expert CALIB:AVXCOMPXPCXHDMIX
ADC/WB Option:XXXXXXXXXXXXXXXX
Advanced
T-TDTDEUC-0100
SDAL-XXXX
RFS:XXXXT-TDT5IBRC
20XX-XX-XX
Type:XXXXXXX
Model:XXXXXXX
MAC Not Available
FactoryDataVer:XXX
EERCVersion:XXX
DTP-AP-COMP-XXX-XX
DTP-HIIG-XXXX
DTP-BP-XXXX-XX
Dateofpurchase:XX/XX/XX
The version of the firmware displayed at the bottom of the screen may differ and the firmware is subject to
change for the improvement of product functions.
IfyouhaveadjustedthesettingsinServiceMode,youhavetoresettheproduct.
4-14 Samsung Electronics
Troubleshooting
ForEastAsia
1. General Remote
ToEnter: POWEROFF INFO MENU MUTE POWERON
ToExit: POWEROFF POWERON
2. Factory Remote
ToEnter: POWERON INFO FactoryKey (Intervalbetweenkeystrokes:lessthan3sec)
ToExit: Press the Factory key twice. (Pressing once enters Aging Mode)
3. Settings when entering Factory mode
- SharpScreen(Dynamic),ColorTone(Cool1),Factory(DynamicCEOff)
4. Adjustment Procedures
- ChannelKey:Selectanitem.
- Volume Key:Adjustthevalueupordown.
- MENUKey:SavethechangestotheEEPROMandreturntothehigher-levelmode.
- UsingtheNumeric(0~9)keys,youcanselectachannel.
- UsingtheSOURCEkey,youcanswitchAVmodes.
5. InitialSERVICEMODEDISPLAYState
Option T-TDT5DAAC-XXXX.X
Control T-TDT5DAAS-XXXX.X
SVC EDID SUCCESS
Expert CALIB:AVXCOMPXPCXHDMIX
ADC/WB Option:XXXXXXXXXXXXXXXX
Advanced
T-TDTDEUC-0100
SDAL-XXXX
RFS:XXXXT-TDT5DAAC
20XX-XX-XX
Type:XXXXXXX
Model:XXXXXXX
MAC Not Available
FactoryDataVer:XXX
EERCVersion:XXX
DTP-AP-COMP-XXX-XX
DTP-HIIG-XXXX
DTP-BP-XXXX-XX
Dateofpurchase:XX/XX/XX
The version of the firmware displayed at the bottom of the screen may differ and the firmware is subject to
change for the improvement of product functions.
IfyouhaveadjustedthesettingsinServiceMode,youhavetoresettheproduct.
Samsung Electronics 4-15
Troubleshooting
4-2-3 FactoryData
Option
Item Data Range
Factory Reset
Type 50HHcD4 42HHcD3/50HHcD4/50FArN4/50FArV4/58FArN1/58FArV1/63FArN1
Local Set EA_Thai EU / EU Italy / EU_Africa / EU_Israel / NORDIG / AD_Au / CIS
PC420 / PC430 / PC431 / PC432 / PC450 / PC451 / PC480 / PC 520 /
Model PC450 PC530 / PC531 / PC540 / PC541 / PC550 / PC551 / PC560 / PC580 /
PC590 / PC670 / PC6100 / PC6400 / PC6500 / PC7000 / PC7700 / PC8000
Tuner DRXKSEMCO S2Semco/T2CXD/DRXKSEM_E/DRXKALPS/DRXKSEM_2
DDR 0 0 / 1 /2
Light Effect OFF On / Off
NONE/PBA/SUWON/SESK/SEH/SERK/SDMA_AU/SDMA_NZ/
Ch Table NONE SDMA_SG / SEIN / SAVINA / SIEL_C / SIEL_N / TTSEC / TSED / TSE /
IRAN
Country ...
S-C-Gray/S-R-Black/S-BLK/T-R-BLK/T-C_Gray/W-Violet/W-Milky/
Front Color S-R-BLK
T-M-Brn / T-W-Gray / W-D-Gray / W-M-White
4-16 Samsung Electronics
Troubleshooting
Control
Menu Item Data Range
EDID Protect On On / Off
L12_1366_768 / L13_1366_768 /
EDID L12_1920_1080 / L13_1920_1080
EDID Type P13_1920_1080 / P12_1024_768 / P13_1024_768 /
P12_1366_768 / P13_1366_768 /
P12_1920_1080
EDIDWrite(0x4D,0) P13_1920_1080
Video Mute Time 8 1 ~ 10
19" / 22" / 23" / 26" / 27" / 32" / 37" / 40" /
Inch 50"
42" / 46" / 50" / 52" / 57"
Dimm Type EXT Don't' adjustment
Off / 0.85 / 0.880.90.0.93 / 0.95 / 0.98 / M1
D.Gamma Off
/ M2 / M3 / M4
TTX On On / Off
TTXList Flof Flof/List
Lang OSD / W Europe / E Europe / Russia
TTXGroup W Europe
/Greek/Turkey/Arab/Farsi/ArabHbrw
HighDevi Off On / Off
Volume Curve EA EA/India
NT Conversion Off On / Off
Sub Option
Language Group East Asia East Asia / Iran / Israel / Middle Asia
Anynet+ On On / Off
Auto Power On On / Off
LNA Menu Off On / Off
LVDS_Format Default Don't' adjustment
Carrier Mute Off On / Off
HDMIEQ1 Off Off / Low / Middle / Strong
HDMIEQ2 Off Off / Low / Middle / Strong
HDMIEQ3 Low Off / Low / Middle / Strong
HDMIEQ4 Low Off / Low / Middle / Strong
Watch Dog Off On / Off
Bus Stop
Panel Auto Setting Don't' adjustment
Samsung Electronics 4-17
Troubleshooting
Menu Item Data Range
HotPlug On On / Off
HotplugCtrl On On / Off
Sub Option HOTPlugDelay 9 0 ~ 63
USB Upgrade On On / Off
Spread Spectrum On / Off
PixelShift Test Off On / Off
Logic Download Off On / Off
Pattern Select
FRC Mode 100Hz/Repeat
FRC DBG MarkOn 0~31
FRC Bypass On / Off
PDP Option
FRC MV Force On / Off
MB SW On / Off
MB Offset 0 ~ 255
Ve Control On / Off
DRC On / Off
Logic USB D/L
HotelOption Not used Not used
Shop Option Off On / Off
Detection Threshold
FM Prescale 22 0 ~ 255
AM Prescale 22 0 ~ 255
Nicam Prescale 33 0 ~ 255
FM M Prescale 23 0 ~ 255
SC1 Vol 12 0 ~ 255
Sound SC2 Vol 12 0 ~ 255
Audio Delay Normal 8 0 ~ 255
Audio Delay Game 8 0 ~ 255
Num of Check 10 0 ~ 255
Stereo Cnt 10 0 ~ 255
MP3 Level 12 0 ~ 255
Ext Volume Scale 2 0 ~ 255
4-18 Samsung Electronics
Troubleshooting
Menu Item Data Range
R2E Scart2 ffset 1 0 ~ 255
NTP3200
NTP Master Volume 30 0 ~ 255
Sound NTP PWM Modulation 208 0 ~ 255
NTP DRC Thresh1 53 0 ~ 255
NTP DRC Thresh2 35 0 ~ 255
NTPSpeakerEQ On On / Off
SVC
Menu Item Data Range
Pattern Sel
FRC PC Mode Off On / Off
Test Pattern
Logic Pattern Sel 0 0 ~ 13
Logic Level Sel 255 0 ~ 255
Panel auto Setting Failure
Panel Display Time 4Hr 4Hr
Logic Usb D/L Success
DVB
Tuner Status
ISDB-T
Expert
Menu Item Data Range
N/D ADJ ...
Source ...
Samsung Electronics 4-19
Troubleshooting
ADC/WB
Menu Item Data Range
ADC
1st_AV_Low 17 0 ~ 255
1st_AV_High 234 0 ~ 255
1st_AV_Delta 3 0 ~ 255
1st_Comp_Low 17 0 ~ 255
1st_Comp_High 234 0 ~ 255
1st_Comp_Delta 3 0 ~ 255
ADC Target
1st_PC_Low 1 0 ~ 255
1st_PC_High 235 0 ~ 255
1st_PC_Delta 3 0 ~ 255
2nd_Low 2 0 ~ 255
2nd_High 235 0 ~ 255
2nd_Delta 1 0 ~ 255
ADC Result 0 ~ 255
1st_AV_Gain 0 ~ 255
1st_AV_Offset 0 ~ 255
1st_Comp_Gain 0 ~ 255
1st_Comp_Gain_Cb 0 ~ 255
1st_Comp_Gain_Cr 0 ~ 255
1st_Comp_Offset 0 ~ 255
Depend on
ADC Result 1st_Comp_Offset_Cb Calibration 0 ~ 255
results
1st_Comp_Offset_Cr 0 ~ 255
1st_PV_R_Gain 0 ~ 255
1st_PV_G_Gain 0 ~ 255
1st_PV_B_Gain 0 ~ 255
1st_PC_R_Offet 0 ~ 255
1st_PC_G_Offset 0 ~ 255
1st_PC_B_Offset 0 ~ 255
4-20 Samsung Electronics
Troubleshooting
Menu Item Data Range
2nd_R_Offset 0 ~ 255
2nd_G_Offset 0 ~ 255
2nd_B_Offset Depend on 0 ~ 255
ADC Result Calibration
2nd_R_Gain results 0 ~ 255
2nd_G_Gain 0 ~ 255
2nd_B_Gain 0 ~ 255
Sub Brightness 0 ~ 255
Red Offset 0 ~ 255
Green Offset 0 ~ 255
Blue Offset Depend on W/B 0 ~ 255
WB
Sub Contrast adjustment 0 ~ 255
Red Gain 0 ~ 255
Green Gain 0 ~ 255
Blue Gain 0 ~ 255
Samsung Electronics 4-21
Troubleshooting
Advanced
Menu Item Data Range
Gamma 0.95
Pwm Max 100
Pwm Min 7
Pwm Mid 10
Sub Setting Contrast Dimming OFF
7.5 IRE NTSC ...
7.5 IRE Offset ...
Comp Phase 49
Led Peak OnOff off
Standard Contrast 95 0 ~ 100
Standard Brightness 42 0 ~ 100
Standard Sharpness 50 0 ~ 100
EPA Standard
Standard Color 50 0 ~ 100
Standard Tint 0 0 ~ 100
Standard Backlight 14 0 ~ 100
WB Movie off On / Off
Color Mode - Dynamic / Standard / Movie
Color Tone - Cool / Normal / Warm1 / Warm2
Msub Brigh - 0 ~ 255
Msub Contr - 0 ~ 255
W1_RGAIN - 0 ~ 255
W1_BGAIN - 0 ~ 255
WB Movie W1_ROFFS - 0 ~ 255
W1_BOFFS - 0 ~ 255
W2_RGAIN - 0 ~ 255
W2_BGAIN - 0 ~ 255
W2_ROFFS - 0 ~ 255
W2_BOFFS - 0 ~ 255
N_RGAIN - 0 ~ 255
N_BGAIN - 0 ~ 255
4-22 Samsung Electronics
Troubleshooting
Menu Item Data Range
W2_ROFFS - 0 ~ 255
W2_BOFFS - 0 ~ 255
N_RGAIN - 0 ~ 255
N_BGAIN - 0 ~ 255
N_ROFFS - 0 ~ 255
N_BOFFS - 0 ~ 255
Movie Contr - 3 ~ 100
WB Movie Movie Brigh - 2 ~ 100
Movie Color - 1 ~ 100
Movie Sharp - 0 ~ 100
Movie Tint - 0 ~ 50
Movie BkLight - 0 ~ 10
Off / 0.85 / 0.88 / 0.90 / 0.93 / 0.95 / 0.98 /
M.Gamma -
M1 / M2 / M3 / M4
M_Sub Gamma - -3 ~ +3
Samsung Electronics 4-23
Troubleshooting
4-2-4 ServiceAdjustment
WhiteBalance-Calibration
Ifpicturecoloriswrong,docalibrationfirst.
Execute calibration in Factory Mode
1. Source:VIDEO
2. SettingMode:PAL(Mode:#2)
3. Pattern:Pattern#24(ChessPattern)
4. UseEquipment:K-7256orEquipmentofequalitylevel
5. Work order
1) Enter by Factory Mode select "ADC/WB".
2) Select "ADC".
3) Select "AV CALIBRATION" again in CALIBRATION MENU.
4) AfterCompletingCalibration,comeout"Avsuccess".OSDonthescreen(bottom-side)forabout
3 seconds.
Source AV:PALcomposite
PC:1280*720/60Hz
< Chess Pattern >
4-24 Samsung Electronics
Troubleshooting
WhiteBalance
Adjust spec.
1. Source:HDMI
2. SettingMode:1280*720@60Hz
3. Pattern:Pattern#92
4. UseEquipment:MIK-7256(MSPG925L)
5. Work order
1) ConnectHDMI(DVI)outputterminalofMIK-7256(MSPG925L)totheHDMIinputinmainset
2) SettheinputtoHDMImode
3) Enter the White Balance menu of service mode
4) Contact CA-210 sensor to glass filter
< Fixed Position of CA210 Probe >
Samsung Electronics 4-25
Troubleshooting
5) Adjust the low light
- AdjustSub-Brighttosetthe`Y'value
- Adjust R-Offset (`x') and B-Offset (`y') to the color coordinates.
* DonotadjustG-Offsetdata
6) Adjust the high light
- AdjustSub-Contrasttosetthe`Y'value
- Adjust R-Gain (`x') and B-Gain (`y') to the color coordinates.
* DonotadjusttheG-gaindata
(CA-210)
InputMode
x y Y(L) T(K),MPCD
Don't Control
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