Samsung Electronics 4-1 Troubleshooting 4. Troubleshooting 4-1 Checkpoints by Error Mode 4-1-1 Main Power No power detected (Stand by LED off) Change SMPS. Check Main PCB No Change fuse No Check Main PCB Yes FR1 is OK? ICFB5401 Pin 1 is 2.5V CON3 Pin 12, 13, 14 is 5.4V? No
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Samsung Electronics 4-1
Troubleshooting
4.Troubleshooting4-1 CheckpointsbyErrorMode
4-1-1 MainPower
No power detected(Stand by LED off)
Change SMPS.
Check Main PCB
NoChange fuse
No
Check Main PCB
Yes
FR1 is OK?
ICFB5401 Pin 1 is 2.5VCON3 Pin 12, 13, 14 is 5.4V?No
4-2 Samsung Electronics
Troubleshooting
4-1-2 NoSound
Check speakers.(speaker change)
Yes
Yes
Replace AMP IC.(AIC4, AIC19)
No
1Check JA5 input signals.
(1khz signal)
No Sound
No
Check Power Lines.(Check IC36).
Check DAC output signal lines between IC10 and AIC4 and
The Condition of Power Protection Active.1. Voltage of SMPS’s +, - PVDD (+30V, -30V) is higher or lower than Standards
Normal Condition Voltage Range: PVDD (+30V, -30V): about +30V, -30V2. Over-current occurs to FET (Over-output or Output short)3. FET’s temperature exceed 150°C.4. No supply voltage on GATE DRIVER.
4-2-2 AMPPre-InspectionrelatingtoPowerProtection
If you think, there are problems at the AMP PCB, you can check the pcb without disassemble the set. (Caution!!: Do not connect the power cord during bellow test!)
MeasurementResistanceusingTester- Approximately
C550 C650 C450
F/R CH 1.8Ω 1.8Ω 1.8Ω
CENTER 1.8Ω 1.8Ω 1.8Ω
SUBWOOFER 1.8ΩΩ 1.8Ω 1.8Ω
<Table 4-1>
If Measured Resistance is very different from above numbers. There is a Problem. →AMPPCBProblem
5.1CHSPEAKEROUTPUT
GND
FRONTR CENTER FRONTL
REARR REARLSUBWOOFER
4-18 Samsung Electronics
Troubleshooting
4-3 MICOM,MPEGInitialization&Update
Micominitial
In no Disc condition, press ‘STOP’ button of Main Unit more than 5 seconds, VF Display will happen to INIT and M int. Then Initialization complete.
MicomUpdate
1. Prepare or Make a DISC-CD or DVD or USB that contains “C550WWM.SSP’ file for update.
2. Play the USB, then “updating” will appear on the screen, then Power will go out after showing ‘complete’ on the screen.
3. Press “Power” key and Press ‘Stop’ button of the remote control more than 5 seconds in No Disc.
<Fig. 4-12 Connecting USB>
<Fig. 4-13 TV Display (On Updating)>
<Fig. 4-14 Update Start>
Samsung Electronics 4-19
Troubleshooting
CheckingoutMICOM&MPEGflashVersion
1. On Root state, Select ‘Set up’.
2. Press “Enter” and move Support.
3. Press “Enter”.
4. Check product information: “SW ver” on TV Display and “Micom SW Ver” on Front ASS’y VFD.
<Fig. 4-15 Connecting USB>
<Fig. 4-16 TV Display (On Updating)>
<Fig. 4-17 Update Start>
4-20 Samsung Electronics
Troubleshooting
DVDflashInitialization&Update
1. Prepare a DISC-CD or DVD or USB that contains ‘C550WWB.ROM’ file for Update.
2. Play the DISC or USB, then ‘Updating’ will appear on the screen, then Power will go out and on.
3. Then DISC-TRAY will open, then remove the DISC or USB, making the Unit as ‘NO DISC’ state.
4. Press ‘STOP’ button of Main Unit for more than 5 seconds, Display Indicator shows ‘INITIALIZE’ then Power goes out.
- When replacing the Main PBA and System Micom should be inserted the region code.- The set is not working properly if you don't insert the region code.- The region code is inserted by the remote control.
1. Press the “AUX” button on the remote control.
2. Press the "TUNER MEMORY" button on the remote control during 4~5 seconds.
3. After step (2), you can see “TEST” on the VFD.
4. When you see “TEST” on VFD, Insert number “4”, “6” to start Region Code setting mode.
4-22 Samsung Electronics
Troubleshooting
5. Afterstep(4),youcansee“−−”ontheVFD. Insert the Region Code (Below table) corresponding model with “0 ~ 9” buttons on the remote control.
Option Table
AreaHT-C530
RegionCodeHT-C650
RegionCodeHT-C450
RegionCodeRemark
Africa / Pakistan 00 30 60
Brazil 01 31 61 C460 - 90
Canada 02 32 62
China (semi_mic) 03 33 63
Europe 04 34 64
Indonesia / Hongkong 05 35 65
Japan 06 36 66
Korea 07 37 67
Latin American 08 38 68
Mexico 09 39 69
Philippines 10 40 70
Russia (full_mic) 11 41 71
Russia (semi_mic) 12 42 72
South Africa 13 43 73
Taiwan 14 44 74
USA 15 45 75 C460 - 91
Newzealand 16 46 76
England 17 47 77
Australia 18 48 78
Iran (HACO) 19 49 79
India 20 50 80
Israel 21 51 81
Middle Asia 22 52 82
Asia 23 53 83
Singapore 24 54 84
<Table 4-2>
− −
Samsung Electronics 4-23
Troubleshooting
6. After step (5), you can see “15 USA” on the VFD. It means that currently System Micom program is installed by USA specification.
7. Turn the Power off.
[Tip]
In case of System Micom and EEPROM problem, you can apply to this. For example, during Updating program of System Micom, if Updating fail is happened, it is impossible to turn on the system from stand-by status. The system will keep the stand-by status continuously, and the touch-key function will never work.In this case, you have to change System Micom, and set up the Buyer Region code again. In case of EEPROM, you don't need to care about it. After set-up the Region code, System Micom will store the information of the region code to EEPROM automatically.